CN111538149A - Telescope control device, system, method, storage medium, program and application - Google Patents
Telescope control device, system, method, storage medium, program and application Download PDFInfo
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Abstract
The invention belongs to the technical field of observation of astronomical transient sources, and discloses a telescope control device, a telescope control system, a telescope control method, a telescope control storage medium, a telescope control program and a telescope control application. 4 sets of telescope systems realize the work of scanning and searching the transient source celestial body with low elevation angle and broadband, and the work of scanning and searching the transient source with high elevation angle and zenith is completed by 4 sets (2 sets each) of optical telescopes arranged on the base 2 in a pitching scanning mode; by optimizing control and image processing software and utilizing the layout of a telescope device, the real-time monitoring and searching work of the whole day area of the transient source celestial body is realized. The invention has the advantages of low cost, high system integration level and high processing speed, and compared with the prior 20 sets of independent systems, the centralized control mode adopted by the invention is convenient for the centralized control of the system and has higher response processing speed.
Description
Technical Field
The invention belongs to the technical field of observation of astronomical transient sources, and particularly relates to a telescope control device, a telescope control system, a telescope control method, a telescope control storage medium, a telescope control program and application.
Background
In recent years, observation and study of astronomical transient sources have become increasingly important in the study of modern time domain astronomy. Transient source refers to a sporadic, transient, aperiodic astronomical phenomenon. From observation, it lasts on a time scale from seconds to weeks or even months. At present, known transient sources mainly include astronomical events such as supernova, gamma storm, micro-gravity lens, black hole collapsed stars and electromagnetic counterparts of gravitational waves. Gamma-ray burst (GRB), referred to as Gamma storm, is a typical source celestial body of transients. It is a phenomenon of sudden enhancement of short-time-scale gamma rays from deep in the universe and is also the most violent explosion phenomenon after a major explosion in the universe. The duration of the light source according to the duration time scale T90 (the time of photon number accumulation counting from 5% to 95%) can be divided into two types of long storm (T90>2s) and short storm (T90<2 s). It is generally believed that long storms originate from the collapse of large mass stars, while short storms originate from the union of double dense stars. In addition to the transient gamma radiation, after its exposure there is also an afterglow phenomenon in the X-ray, optical and radio-electric bands, which lasts on a timescale that can range from weeks to months and even up to years. Therefore, the generation processes of dense celestial bodies, gravitational wave radiation, relativistic shock waves and extremely high-energy cosmic rays can be further researched by researching the gamma storm and the afterexposure phenomenon thereof, and the work of carrying out high-precision inspection on the basic physical principle can be further researched. Since gamma-ray is difficult to predict both temporally and spatially, high frequency all-day monitoring is required with large field-of-view optical telescopes in order to be able to capture the signal in time. With the development of modern astronomical observation technology and data processing technology, more and more transient source celestial bodies are detected, which also makes the observation and research of the transient source become the focus of astronomical attention.
At present, a Wide-field transient source sky-tracking device foundation Wide-Angle Camera array (GWAC) of a national astronomical platform prosperous base is built for the sky-tracking observation and research of a transient source celestial body. GWAC is used primarily to observe optical band radiation within 5 minutes before and 15 minutes after an outbreak of GRB. The system consists of 40 wide-angle telescopes with the aperture of 18 cm, the visual field of each telescope can reach 150 square degrees, scientific grade CCD cameras with large target surfaces (4k x 4k) are all equipped, and the total visual field can reach 5000 square degrees. Therefore, 2 telescopes and 40 telescopes which are arranged on each rack need 20 racks, and compared with the whole system, the structure improves the flexibility of the system, but increases the difficulty of controlling the system, and greatly increases the construction cost of the system. Therefore, it is very important to design a new construction method of the telescope group.
In order to perform the observation and research of the transient source celestial body on the sky, scientific researchers in China have proposed to use a wide-angle camera array to carry out related research. One of The related arts, The mini-GWAC optical focus-up of transient angles from The O2 cameras and projects for The up communications O3run, res.astron.astrophys,20(1),13(2020), national astronomy base proposed to build Wide-field transient source sky equipment base Wide Angle Camera array (GWAC) for relevant work research. GWAC is used primarily to observe optical band radiation within 5 minutes before and 15 minutes after an outbreak of GRB. The system consists of 40 wide-angle telescopes with the aperture of 18 cm, the visual field of each telescope can reach 150 square degrees, scientific grade CCD cameras with large target surfaces (4k x 4k) are all equipped, and the total visual field can reach 5000 square degrees. Currently, relevant research data has been obtained using this system.
The implementation scheme of the prior art I is as follows: a Ground Wide Angle Camera array (GWAC) is composed of 40 Wide-Angle telescopes with the aperture of 18 cm, the visual field of each telescope can reach 150 square degrees, scientific grade CCD cameras with large target surfaces (4k × 4k) are equipped, and the total visual field can reach 5000 square degrees. The observation plan is distributed through the main control system, each observation subsystem (single telescope) is started to observe different sky areas, and original images are obtained. And after the acquired image is subjected to data processing, identifying the acquired image according to the dynamic threshold value change range. If the dynamic threshold value change range does not exceed the set value, determining that no new target is found, and acquiring the image again; and if the dynamic threshold exceeds a set value, the target is considered to be a candidate target, multi-frame acquisition is carried out on the target, the obtained image is sent to a scientific center for further identification and judgment, and the matched target image is stored in a database, so that the development of subsequent scientific research is facilitated.
The first shortcoming of the prior art is that in order to realize a telescope array system with a large view field and a whole day area, the system selects a structural arrangement that every 2 telescopes are placed on one machine frame, and the whole set of system has 20 sets of machine frame devices. Although the flexibility of a single device is increased, the following disadvantages still exist: the overall control difficulty of the control system is increased, the requirement on the performance of the main control equipment is higher, and the response time of the system is longer; the system has higher construction cost;
through the above analysis, the problems and defects of the prior art are as follows: the difficulty of a control system of the existing telescope is high, and the response time of the system is long; the system is costly to construct.
The difficulty in solving the above problems and defects is: the GWAC system mainly comprises 20 sets of subsystems, the system is relatively complex in structure, the 20 sets of subsystems need to respectively respond, and the system response time is long; meanwhile, the system is not easy to be controlled in a centralized way because the system has more constitutional units. How to improve the response speed of the system and realize centralized control is difficult.
The cost of the whole structure of the system is high, and compared with the technical scheme, the cost is at least 1-2 times higher.
The significance of solving the problems and the defects is as follows: for the transient source celestial body, the requirement on the response speed of the system is extremely high, and in order to detect the signal of the transient source celestial body more timely, the scheme forms a unified integral structure, so that the system structure is more compact (the occupied area is larger)<20m2) The automatic searching function of the system can be started only by one command signal without independent operation of each subsystem,the response time of the system is shortened, the composition of the system is simplified, and the composition cost of the system is greatly reduced.
Disclosure of Invention
The invention provides a telescope control device, a telescope control system, a telescope control method, a telescope control storage medium, a telescope control program and application.
The invention is realized in such a way that a telescope control method comprises the following steps:
in the first step, 8 sets of optical telescope systems are uniformly fixed on a multifunctional turntable, 360-degree rotation is realized, and uninterrupted scanning of a whole day area is realized.
Secondly, 4 sets of telescope systems realize the work of scanning and searching the transient source celestial body at a low elevation angle and a broadband, and the work of scanning and searching the transient source at a high elevation angle and a zenith is finished by 4 sets (2 sets each) of optical telescopes arranged on the base 2 in a pitching scanning mode;
and thirdly, realizing real-time monitoring and searching work of the whole day area on the transient source celestial body by optimizing control and image processing software and utilizing the layout of the telescope device.
And (3) image processing:
the observation modes include the following two types: if the lens is kept still, for the position information of a transient source, the difference image of two continuous frame images of the position information can obviously change at the position and is marked as a, and the difference image of the second frame image and the third frame image can not have a difference value-a for offsetting the change at the position; and because noise appears randomly, if a significant difference b appears in two continuous frames of pictures, and a difference value of-b appears in the second frame of pictures and the third frame of pictures, which indicates that the values of the third frame of pictures and the first frame of pictures at the position are the same, the change represented in the second frame is probably noise rather than a transient source. Applying this property, several frames can be observed in succession after a significant difference occurs to determine whether it is noise or a transient source celestial body. If the lens moves to track the moving target, before the two frames of pictures are subjected to difference processing, the translation lengths of the second frame of picture along the horizontal direction and the vertical direction need to be considered, the pictures need to be realigned and then subjected to difference processing, and for pixel points existing in the second frame of picture but not existing in the first frame, the processing with the next frame of picture needs to be waited. At this point, the images observed by the first set of telescopes are saved, and the images acquired by the second set of telescopes are compared with the images acquired by the first set of telescopes. By the optimization mode, the operation of repeated observation of a single set of telescope is omitted, the observation time is shortened, and the speed of target identification is increased.
In addition, the observation strategy of the telescope plays a very important role in the detection of the target, and the whole day area is monitored in a wide area mode by adopting a longitudinal M-shaped scanning mode and a transverse Z-shaped scanning mode respectively, and the scanning path schematic diagram is shown. Through researching the parameters such as the rotation parameter of the rotary table of the telescope, the pitching parameter, the exposure time of the camera and the like, the telescope control parameter and the camera parameter which are suitable for monitoring the gamma storm transient source celestial body in the whole day area are obtained, and the detection probability of the transient source celestial body is improved. FIG. 8 is a schematic diagram of observation by using "M" type and "Z" type observation strategies, respectively. The classical transient source search process is shown in fig. 9.
Further, the telescope control method realizes telescope optical systems with different monitoring fields of view by changing the size, the material and the structure of optical lenses of the telescope; the adjustment of the monitoring sky area of a single set of telescope is realized by changing the number of the telescopes.
Further, the telescope control method 2 is characterized in that the field of view of each optical telescope is 14 degrees or 14 degrees.
It is a further object of the invention to provide a computer device comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of:
in the first step, 8 sets of optical telescope systems are uniformly fixed on a multifunctional turntable, 360-degree rotation is realized, and uninterrupted scanning of a whole day area is realized.
Secondly, 4 sets of telescope systems realize the work of scanning and searching the transient source celestial body at a low elevation angle and a broadband, and the work of scanning and searching the transient source at a high elevation angle and a zenith is finished by 2 optical telescopes arranged on a base in a pitching scanning mode;
and thirdly, realizing real-time monitoring and searching work of the whole day area on the transient source celestial body by optimizing control and image processing software and utilizing the layout of the telescope device.
It is another object of the present invention to provide a computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the steps of:
in the first step, 8 sets of optical telescope systems are uniformly fixed on a multifunctional turntable, 360-degree rotation is realized, and uninterrupted scanning of a whole day area is realized.
Secondly, 4 sets of telescope systems realize the work of scanning and searching the transient source celestial body at a low elevation angle and a broadband, and the work of scanning and searching the transient source at a high elevation angle and a zenith is finished by 2 optical telescopes arranged on a base in a pitching scanning mode;
and thirdly, realizing real-time monitoring and searching work of the whole day area on the transient source celestial body by optimizing control and image processing software and utilizing the layout of the telescope device.
Another object of the present invention is to provide a telescope control system operating the telescope control method, the telescope control system including:
the telescope system module is used for realizing monitoring and searching of different monitoring fields;
the control system module is used for realizing the searching speed of the monitored target by adjusting the rotating speed and the rotating direction/direction of the telescope;
and the image data processing module is used for realizing target identification by optimizing the algorithm of the image processing software.
Another object of the present invention is to provide a telescope control apparatus equipped with the telescope control system, the telescope control apparatus being provided with:
a base;
the multifunctional turntable is rotationally fixed on the base, a first equatorial instrument support and a second equatorial instrument support are rotationally fixed on the multifunctional turntable, the second equatorial instrument support is arranged on the inner side of the first equatorial instrument support, and the number of the first equatorial instrument support and the number of the second equatorial instrument support are four and are uniformly arranged at 90 degrees;
the second equatorial telescope support is higher than the first equatorial telescope support, and the first equatorial telescope support and the second equatorial telescope support are both provided with a telescope.
Further, the number of the telescopes on the first equatorial telescope support or the second equatorial telescope support is 1-4.
Furthermore, the telescope is provided with a lens cone, and the front end of the inner side of the lens cone is connected with an optical lens in a clamping way;
the aperture of the telescope is 15cm, the optical lens substrate is K9 glass, quartz glass or fluoride glass, and the number of the optical lenses is 1-10; the telescope optical field of view is 14 degrees by 14 degrees.
The invention also aims to provide an observation terminal of an astronomical transient source, which is provided with the telescope control device.
By combining all the technical schemes, the invention has the advantages and positive effects that:
fig. 10 is a photograph of an actual shot using the present technique to perform transient source search.
Table 1 comparison of this scenario with GWAC project technology
| Item | The technical scheme | GWAC |
| Monitoring sky district | 6600 squareness degree | 5000 square degree |
| Number of lens barrels | 16 are provided with | 40 are provided with |
| Number of racks | 8 are provided with | 20 are provided with |
| Cost valuation | <1000 ten thousand | >4000 ten thousand |
| Floor area | <20m2 | >100m2 |
The initial test system of the technical scheme is utilized to carry out real object shooting pictures of the transient source all-day region patrolling, the whole response shooting process needs about 20s, the response speed of the system is greatly improved, and the search and detection of the transient source celestial body are conveniently carried out. Table 1 shows a comparison between the present technical solution and the GWAC project, where the present technical solution reduces the cost and also reduces the system space under the condition of the same performance.
The invention can realize a transient source monitoring system with a larger monitoring antenna region while reducing the complexity and the cost of the system. The method meets the requirement of fast searching of the transient source celestial body, and has higher practical value. By the telescope layout mode of the scheme, the system layout is more compact, and the overall control is convenient to realize; meanwhile, the speed of searching and scanning the target in the whole day area can be improved; more importantly, through the scheme, the number of the telescope is reduced to 1/2-1/3 of the number of the original equipment.
The cost is reduced under the condition that the monitoring sky area is the same, the number of the telescopes required by the system is 16, and compared with 40 telescopes of the previous GWAC system, the cost of the system is greatly reduced. The system has higher integration level and higher processing speed, and compared with the prior 20 sets of independent systems, the system adopts a centralized control mode, thereby facilitating the centralized control of the system and having higher response processing speed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a flowchart of a telescope control method according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a telescope control system according to an embodiment of the present invention.
FIG. 3 is a schematic structural diagram of a telescope device for fast identification of a transient source celestial body provided by an embodiment of the invention;
FIG. 4 is a schematic diagram of another side structure of the telescope device for fast identification of a transient source celestial body provided by the embodiment of the invention;
FIG. 5 is a schematic structural diagram of example 3 provided in an embodiment of the present invention;
in the figure: 1. a multifunctional turntable; 2. a first equatorial support; 3. a second equatorial support; 4. a lens barrel; 5. a base; 6. an optical lens.
FIG. 6 is a schematic diagram of a telescope system construction method for fast identification of a transient source celestial body according to an embodiment of the present invention.
Fig. 7 is a schematic view of a scanning sky area range provided by an embodiment of the invention.
Fig. 8 is an observation schematic diagram of observation strategies respectively adopting an "M" type and a "Z" type provided by the embodiment of the present invention.
FIG. 9 is a diagram of an exemplary transient source search image subtraction process according to an embodiment of the invention.
Fig. 10 is a photograph of an actual transient source search using the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In view of the problems of the prior art, the present invention provides a telescope control apparatus, system, method, storage medium, program and application thereof, and the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the telescope control method provided by the invention comprises the following steps:
s101: 8 sets of optical telescope systems are uniformly fixed on the multifunctional rotary table, 360-degree rotation is realized, and uninterrupted scanning of the whole day area is realized.
S102: the 4 sets of telescope systems can realize the work of scanning and searching the transient source celestial body with low elevation angle and broadband, and the work of scanning and searching the transient source with high elevation angle and zenith is completed by 2 optical telescopes arranged on a base marked as 2 in a pitching scanning mode;
s103: by optimizing control and image processing software and utilizing the layout of the telescope device, the real-time monitoring and searching work of the whole day area on the transient source celestial body can be realized.
As shown in fig. 2, the telescope control system provided by the present invention includes:
and the telescope system module is used for realizing monitoring and searching of different monitoring fields.
And the control system module is used for realizing the searching speed of the monitored target by adjusting the rotating speed, the rotating direction and the orientation of the telescope.
And the image data processing module is used for realizing target identification by optimizing the algorithm of the image processing software.
The technical solution of the present invention is further described below with reference to the accompanying drawings.
1. Transient source: is a sporadic, transient, aperiodic astronomical phenomenon. On a time scale from seconds to weeks or even months. At present, known transient sources mainly include astronomical events such as supernova, gamma storm, micro-gravity lens, black hole collapsed stars and electromagnetic counterparts of gravitational waves.
2. Gamma-ray burst (GRB), referred to as Gamma storm, is a typical source celestial body of transients. It is a phenomenon of sudden enhancement of short-time-scale gamma rays from deep in the universe and is also the most violent explosion phenomenon after a major explosion in the universe. The transient source mentioned in the present invention will be described by taking a gamma storm as an example.
3. The day area: in order to facilitate identification in the field of astronomy, the field of astronomy is divided into star sky areas, namely sky areas or star areas, according to the directions of stars.
4. Visual field: (Field of View, FOV) astronomical terms refer to the range of the sky seen through a telescope. The field of view represents the maximum range that can be observed, usually expressed in degrees, the larger the field of view, the larger the range of observation.
As shown in fig. 3 to 5, a telescope device for fast identification of a transient source celestial body provided by an embodiment of the invention includes: the multifunctional turntable comprises a multifunctional turntable 1, a first equatorial instrument support 2, a second equatorial instrument support 3, a lens cone 4, a base 5 and an optical lens 6.
Example 1
The multifunctional changing table 1 is rotationally fixed on the base 5, the first equatorial telescope support 2 and the second equatorial telescope support 3 are rotationally fixed on the multifunctional changing table 1, the second equatorial telescope support 3 is arranged on the inner side of the first equatorial telescope support 2, and the first equatorial telescope support 2 and the second equatorial telescope support 3 are arranged in four and are uniformly arranged at 90 degrees; the second equatorial instrument bracket 3 is higher than the first equatorial instrument bracket 2, and the first equatorial instrument bracket 2 and the second equatorial instrument bracket 3 are both provided with a telescope; the equatorial telescope frame can realize 360 rotations, ensures the incessant scanning in whole day district, and the telescope system that places on the multi-functional platform of trading 1 realizes 360 rotations of horizontal direction along with the rotation of multi-functional platform of trading 1, and in addition, every set of telescope equipment all can realize rotating alone, has better tracking flexibility.
The number of the telescopes on the equatorial instrument support or the second equatorial instrument support 3 is 1-4. The telescope is provided with a lens cone 4, and the front end of the inner side of the lens cone 4 is connected with an optical lens 6 in a clamping way. The aperture of the telescope is 15cm, the substrate of the optical lens 6 is K9 glass, quartz glass or fluoride glass, and the number of the optical lenses 6 is 1-10; the telescope optical field of view is 14 degrees by 14 degrees. The system has more compact overall layout and is convenient for realizing overall control; meanwhile, the speed of searching and scanning the target in the whole day area can be improved; the number of the telescope is reduced to 1/2-1/3 of the number of the original equipment, and the construction cost of the system is reduced.
Example 2
Based on the embodiment 1, the aperture of the telescope of the embodiment is 15cm, the substrate of the optical lens 6 is K9 glass, the number of the optical lens 6 is 6, and the optical field of a single telescope can reach 14 degrees by 14 degrees. Two telescopes are respectively placed on the 4 first equatorial instrument supports 2, and the transient source target searching system is constructed in a mode that the two telescopes are respectively placed on the second equatorial instrument support 3. The observation system is started by controlling the main control system, the multifunctional changing table 1 mainly rotates for 360 degrees in the horizontal direction, the telescope on the first equatorial telescope bracket 2 keeps the pitch angle at 25 degrees, and the range of the day area of 18-32 degrees is monitored; the monitoring work in the day zone of 33-90 deg. is monitored by means of elevation scanning by means of a telescope placed on the second equatorial support 3. The two sets of telescope systems rotate along with the rotary table, the whole sky area is monitored and searched within the range of 360 degrees, a plurality of telescopes acquire observation data at the same time, each telescope is matched with the graphic workstation, the acquired observation data are processed in real time, observation images meeting conditions are subjected to multi-frame identification through dynamic threshold change monitoring, then the observation images are stored in a database, and then the observation data are collected continuously. And if the observed image does not accord with the target characteristics, data acquisition is directly carried out without data processing.
Example 3
As shown in fig. 3, based on example 1, the aperture of the telescope is 15cm, the substrate of the optical lens 6 is K9 glass, the number of the lenses is 6, and the optical field of view of a single telescope can reach 14 ° by 14 °. Two telescopes are respectively arranged on the 4 first equatorial instrument supports 2, in order to save cost, the construction of a transient source target search system is carried out in a mode that only one telescope is arranged on the second equatorial instrument support 3, an observation system is started by controlling a main control system, the multifunctional changing table 1 mainly rotates by 360 degrees in the horizontal direction, the telescope on the first equatorial instrument support 2 keeps the pitch angle of 25 degrees, and the range of the day area of 18-32 degrees is monitored; the monitoring work in the day zone of 33-90 deg. is monitored by means of elevation scanning by means of a telescope placed on the second equatorial support 3. The two sets of telescope systems rotate along with the rotary table, the whole sky area is monitored and searched within the range of 360 degrees, a plurality of telescopes acquire observation data at the same time, each telescope is matched with the graphic workstation, the acquired observation data are processed in real time, observation images meeting conditions are subjected to multi-frame identification through dynamic threshold change monitoring, then the observation images are stored in a database, and then the observation data are collected continuously. And if the observed image does not accord with the target characteristics, data acquisition is directly carried out without data processing.
The working principle of the invention is as follows: the observation system is started by controlling the main control system, the multifunctional changing table 1 mainly rotates for 360 degrees in the horizontal direction, the telescope on the first equatorial telescope bracket 2 keeps the pitch angle at 25 degrees, and the range of the day area of 18-32 degrees is monitored; the monitoring work in the day zone of 33-90 deg. is monitored by means of elevation scanning by means of a telescope placed on the second equatorial support 3. The two sets of telescope systems rotate along with the rotary table, the whole sky area is monitored and searched within the range of 360 degrees, a plurality of telescopes acquire observation data at the same time, each telescope is matched with the graphic workstation, the acquired observation data are processed in real time, observation images meeting conditions are subjected to multi-frame identification through dynamic threshold change monitoring, then the observation images are stored in a database, and then the observation data are collected continuously. And if the observed image does not accord with the target characteristics, data acquisition is directly carried out without data processing.
The invention adopts a centralized control mode, the whole layout is as shown in figure 1, 8 sets of optical telescope systems are arranged in total, and the optical telescope systems are uniformly fixed on a multifunctional turntable. The equatorial gantry shown in fig. 2 can achieve a 360 ° rotation, ensuring uninterrupted scanning of the whole day area. The telescope system arranged on the multifunctional rotary table rotates along with the rotation of the multifunctional rotary table to realize 360-degree rotation in the horizontal direction. In addition, each set of telescope equipment can realize independent rotation, and has better tracking flexibility. The base marked 1 is provided with 2 optical telescopes (the visual field is 14 degrees by 14 degrees), and 4 sets of telescope systems can realize the work of scanning and searching transient source celestial bodies with low elevation angle and broadband. The working of the transient source for scanning at high elevation and zenith is performed by means of elevation scanning with 2 optical telescopes (field of view 14 °) placed on a base marked with 2, whose scanning range is schematically shown in fig. 7. Meanwhile, the real-time monitoring and searching work of the whole day area of the transient source celestial body can be realized by optimizing control and image processing software and utilizing the layout of the telescope device. In the invention, the scanning and searching speed can be further improved by increasing the view field of the telescope; the speed of scanning the search sky area can be increased by increasing the number of telescopes placed on the base 2 and changing the rotation speed. The layout structure of the system can be changed by changing the number of telescopes on the base, the aperture of the telescopes (changing the field of view) and the like, and the overall layout structure can also be changed by continuously increasing the number of the bases and the like. In addition, the shape of the turntable can be changed into a square shape or the like, such as a circular shape at present.
The telescope system construction method for the transient source celestial body rapid identification mainly comprises a telescope system, a control system and an image data processing system, and the specific flow is shown in fig. 6.
The telescope system can realize telescope optical systems with different monitoring fields by changing the size, the material and the structure of the optical lens of the telescope; the number of the telescopes is changed to realize the adjustment of the monitoring sky area of a single set of telescopes. The size of the optical lens can be 1 cm-100 cm; the optical lens material can be K9 glass, quartz glass and fluoride glass; the number of lenses of the optical system can be 1 to 10; the size, material and number of optical lenses used may be one or several of the materials and sizes referred to above. The number of the telescopes which can be placed on each rack is 1-4.
The control system of the invention can realize the searching speed of the monitored target by adjusting the rotating speed, the rotating direction/the orientation of the telescope.
The image data processing system can improve the image processing speed by optimizing the algorithm (artificial intelligence) of the image processing software and the like, and is convenient for target identification and the like.
The three parts are integrated through a system, so that a telescope system for quickly identifying the celestial body of the transient source can be obtained.
The present invention is further described below in conjunction with the experimental results.
FIG. 8 is a schematic diagram of observation by using "M" type and "Z" type observation strategies, respectively. The classical transient source searching process is shown in fig. 9, and the main principle is that by subtracting the observation image (a) from the template image (b), if it is a transient source (i.e. a new source), an image similar to a complete point source appears in the subtracted residual image (c), such as o1 and o2 in fig. 9, and other incomplete image spots are noise generated in the subtracting process, such as n1, n2 and n3 in fig. 9 (c). Therefore, how to automatically and rapidly identify the transient source in the residual image from the surrounding noise is one of the key problems to be solved by the technical solution. Simulating and constructing a more real training sample algorithm by using an actual star image profile based on new characteristic parameters such as an isocratic measurement star image profile; and adding methods such as noise filtering criterion based on measured data analysis and the like to realize an optimized rapid automatic identification system of the transient source.
Fig. 10 is a photograph of an actual shot using the present technique to perform transient source search.
Fig. 10 shows the result of a whole day area scanning search initially observed by this solution.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be noted that the embodiments of the present invention can be realized by hardware, software, or a combination of software and hardware. The hardware portion may be implemented using dedicated logic; the software portions may be stored in a memory and executed by a suitable instruction execution system, such as a microprocessor or specially designed hardware. Those skilled in the art will appreciate that the apparatus and methods described above may be implemented using computer executable instructions and/or embodied in processor control code, such code being provided on a carrier medium such as a disk, CD-or DVD-ROM, programmable memory such as read only memory (firmware), or a data carrier such as an optical or electronic signal carrier, for example. The apparatus and its modules of the present invention may be implemented by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., or by software executed by various types of processors, or by a combination of hardware circuits and software, e.g., firmware.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A telescope control method, characterized in that the telescope control method comprises:
firstly, uniformly fixing a plurality of sets of optical telescope systems on a multifunctional turntable, realizing 360-degree rotation and realizing uninterrupted scanning of a whole day area;
secondly, the multiple sets of telescope systems realize the work of scanning and searching the transient source celestial body at a low elevation angle and a broadband, and the work of scanning and searching the transient source at a high elevation angle and a zenith is finished by multiple sets of optical telescopes arranged on a base in a pitching scanning mode;
and thirdly, realizing real-time monitoring and searching work of the whole day area on the transient source celestial body by optimizing control and image processing software and utilizing the layout of the telescope device.
2. The telescope control method according to claim 1, wherein the telescope control method is used for realizing telescope optical systems with different monitoring fields of view by changing the size, the material and the structure of optical lenses of the telescope; the adjustment of the monitoring sky area of a single set of telescope is realized by changing the number of the telescopes.
3. The telescope control method as recited in claim 1, wherein the field of view of the 2 optical telescopes is 14 ° by 14 °.
4. A computer device, characterized in that the computer device comprises a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to carry out the steps of:
step one, 8 sets of optical telescope systems are uniformly fixed on a multifunctional turntable, 360-degree rotation is realized, and uninterrupted scanning of a whole day area is realized;
secondly, 4 sets of telescope systems realize the work of scanning and searching the transient source celestial body at a low elevation angle and a broadband, and the work of scanning and searching the transient source at a high elevation angle and a zenith is finished by 4 sets of optical telescopes arranged on a base in a pitching scanning mode;
and thirdly, realizing real-time monitoring and searching work of the whole day area on the transient source celestial body by optimizing control and image processing software and utilizing the layout of the telescope device.
5. A computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the steps of:
step one, 8 sets of optical telescope systems are uniformly fixed on a multifunctional turntable, 360-degree rotation is realized, and uninterrupted scanning of a whole day area is realized;
secondly, 4 sets of telescope systems realize the work of scanning and searching the transient source celestial body at a low elevation angle and a broadband, and the work of scanning and searching the transient source at a high elevation angle and a zenith is finished by 4 sets of optical telescopes arranged on a base in a pitching scanning mode;
and thirdly, realizing real-time monitoring and searching work of the whole day area on the transient source celestial body by optimizing control and image processing software and utilizing the layout of the telescope device.
6. A telescope control system for operating the telescope control method according to any one of claims 1 to 3, the telescope control system comprising:
the telescope system module is used for realizing monitoring and searching of different monitoring fields;
the control system module is used for realizing the searching speed of the monitored target by adjusting the rotating speed and the rotating direction/direction of the telescope;
and the image data processing module is used for realizing target identification by optimizing the algorithm of the image processing software.
7. A telescope control apparatus equipped with the telescope control system according to claim 6, wherein the telescope control apparatus is provided with:
a base;
the multifunctional turntable is rotationally fixed on the base, a first equatorial instrument support and a second equatorial instrument support are rotationally fixed on the multifunctional turntable, the second equatorial instrument support is arranged on the inner side of the first equatorial instrument support, and the number of the first equatorial instrument support and the number of the second equatorial instrument support are four and are uniformly arranged at 90 degrees;
the second equatorial telescope support is higher than the first equatorial telescope support, and the first equatorial telescope support and the second equatorial telescope support are both provided with a telescope.
8. The telescope control apparatus according to claim 7, wherein the number of telescopes on the first equatorial mount or the second equatorial mount is 1-4.
9. The telescope control apparatus according to claim 1, wherein the telescope is provided with a lens barrel, and an optical lens is engaged with a front end of an inner side of the lens barrel;
the aperture of the telescope is 15cm, the optical lens substrate is K9 glass, quartz glass or fluoride glass, and the number of the optical lenses is 1-10; the optical field of view of the telescope is 14 degrees or 14 degrees; the aperture and the view field of the telescope are both variable, and the change of the view field changes along with the change of the aperture.
10. An observation terminal of an astronomical transient source, characterized in that the observation terminal of the astronomical transient source is provided with the telescope control device of any one of claims 7-9.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998855A (en) * | 2020-09-02 | 2020-11-27 | 中国科学院国家天文台长春人造卫星观测站 | Geometric method and system for determining space target initial orbit through optical telescope common-view observation |
| CN111999881A (en) * | 2020-08-20 | 2020-11-27 | 广州博冠光电科技股份有限公司 | Novel polar axis telescope |
| CN113900245A (en) * | 2021-10-11 | 2022-01-07 | 中国科学院国家天文台长春人造卫星观测站 | Telescope observation device, control method and control system for transient source |
| CN114299808A (en) * | 2022-01-12 | 2022-04-08 | 北京海泰微纳科技发展有限公司 | Virtual astronomical table and display method |
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2020
- 2020-06-09 CN CN202010515450.XA patent/CN111538149A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999881A (en) * | 2020-08-20 | 2020-11-27 | 广州博冠光电科技股份有限公司 | Novel polar axis telescope |
| CN111998855A (en) * | 2020-09-02 | 2020-11-27 | 中国科学院国家天文台长春人造卫星观测站 | Geometric method and system for determining space target initial orbit through optical telescope common-view observation |
| CN113900245A (en) * | 2021-10-11 | 2022-01-07 | 中国科学院国家天文台长春人造卫星观测站 | Telescope observation device, control method and control system for transient source |
| CN113900245B (en) * | 2021-10-11 | 2024-06-25 | 中国科学院国家天文台长春人造卫星观测站 | Telescope observation device, control method and control system of transient source |
| CN114299808A (en) * | 2022-01-12 | 2022-04-08 | 北京海泰微纳科技发展有限公司 | Virtual astronomical table and display method |
| CN114299808B (en) * | 2022-01-12 | 2023-10-17 | 北京海泰微纳科技发展有限公司 | Virtual astronomical platform and display method |
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