JPH075452Y2 - A device that automatically corrects the drive error of the astronomical telescope - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention has an object of automatically correcting a periodic tracking error (periodic motion) caused by a mechanical error of a driving device when an astronomical telescope is driven. It was created.

[Conventional technology]

As a conventional astronomical telescope driving device, (1) JP-A-60-2
No. 01317, (2) JP-A-59-15215, (3) JP-A-58-57
There are 107 and (4) Japanese Patent Publication No. 55-15707.

[Problems to be solved by the device]

However, in the above conventional technique (1), the target to be observed is repeated twice within a preset time. It also uses the X and Y axes. Even if the polar axes are aligned, if there is a mechanical error if the alignment is performed “within a preset time”, it cannot be corrected.

Also, when the polar axis is displaced and the period motion is mixed with it, the polar axis is displaced, so the X axis and Y axis are driven, and the machine of each axis. There is no driving method to eliminate the dynamic error.

Prior art (2) merely describes a method of driving a motor by a microcomputer of an equatorial mount.

The prior art (3) is a method driven by a computer like the above prior art (2), and is not a method for correcting periodic motion.

The prior art (4) is a method in which acceleration and deceleration can be arbitrarily and steplessly performed and automatic acceleration and deceleration cannot be performed. or,
Correcting periodic motion is not possible with this method.

This invention adopts the following means in order to solve the above-mentioned problems of the prior art.

[Means for Solving the Problems]

That is, the right meridian storage device (1A) with a switch (9),
Declination axis memory device (1B) and RA longitude axis drive control circuit (2A),
In the drive control device (3) which also has the declination axis drive control circuit (2B), the deceleration axis and declination axis drive control circuits (2A) and (2B) are respectively attached to the deceleration axis and declination axis of the astronomical telescope. Of the Worm (W) and Worm Wheel (H) gear groups, connected to the left meridian axis drive motor (M1), declination axis drive motor (M2), and the left meridian axis storage device (1A), declination axis The storage device (1B) is changed to the RA / RH and declination axis selectors (10A) (10B)
Connect the right longitude axis acceleration switch (5A), the same deceleration switch (6A) and declination axis acceleration switch (7B), the same deceleration switch (8B) to the right longitude axis and declination axis storage device (1A) And (1B), and the right longitude axis switching device (10A) and declination axis switching device (10B) respectively, and the right longitude axis switching device (10A) and declination axis switching device (10B) are controlled by the right longitude axis drive. Circuit (2A), declination axis drive control circuit (2B)
This is a device that automatically corrects the drive error of the astronomical telescope connected to each.

〔Example〕

This invention is used for an equatorial mount for an astronomical telescope that does not have a fixed origin on the RA and declination axes.
This is a device that corrects the periodic motion up to the worm of the drive mechanism by a drive control device that has both a storage device with a switch and a drive control device, and as shown in the drawing, a right meridian storage device with a switch (9) (1A) , A declination axis storage device (1B), a declination axis drive control circuit (2A), and a declination axis drive control circuit (2B)
The drive control circuits (2A) and (2B) for the RA and declination axes are used as worms (W) for the RA and declination axes of the astronomical telescope.
Also, it is connected to the left longitude drive motor (M1) and declination axis drive motor (M2) that drive the gear group of the worm wheel (H), and the left longitude storage device (1A) and declination memory device (1B) Is connected to the RA / Ax axis and declination axis selectors (10A) and (10B), and the RA / Ax axis acceleration switch (5A), deceleration switch (6A), declination axis acceleration switch (7B), and deceleration switch (8B) is connected to the left longitude axis and declination axis storage devices (1A) and (1B), the right longitude axis switching device (10A), and the declination axis switching device (10B), respectively, and the right longitude axis switching device (10A) ), The declination axis switching device (10B) is connected to the right longitude axis drive control device (2A) and the declination axis drive control device (2B), respectively.

It should be noted that the equator and declination axes of the equatorial mount of the astronomical telescope have coaxially mounted worm wheels that are driven to mesh with the worm. This is the same as the conventional equatorial mount because it is shown in the figure. do not do.

[Action]

As seen in the above device, the drive control circuit incorporates switches for acceleration and deceleration for adjusting the speed of each axis of RA, Decl.
(1B) has a function of storing the states of these switches (5A) (6A) (7B) (8B) at a constant cycle of several tens of milliseconds for the time when the worm (W) makes one revolution, and the stored state is constant. It has a function to read in a cycle, and after the writing start time is notified by the switch (9), the time until the worm (W) makes one rotation, the state of the switch (5A) (6A) (7B) (8B) It has the function of storing and then automatically reading the stored contents in order.

The drive control circuits (2A) and (2B) are switches (5A) (6A) (7B) while the storage devices (1A) and (1B) are writing.
The drive speed is controlled only by the operation of (8B), and when the contents of the storage device (1A) (1B) starts to be read, the read data and the switches (5A) (6A) (7B) (8B) Both control the drive control device (3).

Therefore, in use, the observer guides the target celestial body to a fixed position within the field of view, then presses the switch (9), and the worm (W) keeps the field of view of the astronomical telescope until it rotates once from the current position. Switch (5A) (6A) so that it is in a fixed position
If you operate (7B) and (8B), the correction of periodic motion will be automatically written in the memory device (1A) (1B).

After the worm (W) makes one revolution, the correction data is automatically output sequentially from the storage device to correct the periodic motion.

The operation of the changeover devices (10A) and (10B) in the above embodiment is performed when the data from the storage device is valid and when correction is made by the other acceleration / deceleration switches (5A) (6A) (7B) (8B). A switch is used.

When the switch (9) of the storage device (1A) (1B) is pressed, the state of the acceleration / deceleration switches (5A) (6A) (7B) (8B) starts to be stored in the storage device, and then the warm (W ) One turn, the operation of the acceleration / deceleration switches (5A) (6A) (7B) (8B) is automatically ignored when the corresponding time has elapsed, the writing of the memory to the storage device is completed, and the reading from the storage device is started. However, only the read data is effective.

[Advantages of the Invention] Since the present invention is configured as described above, the error generated when driving the astronomical telescope can be reduced to a level that can be ignored without increasing the mechanical processing accuracy, and the complicated operation as in the past can be performed. This is a useful practical device that can automatically correct the drive error without requiring it.

[Brief description of drawings]

 The accompanying drawing is a block circuit diagram showing the present invention. In the figure, reference numeral (1A) ... Red longitude axis storage device (1B) ... Declination axis storage device (2A) ... Red longitude axis drive control device (2B) ... Declination axis drive control device (3) ...... Drive control device (M1) …… Rongus axis drive motor (M2) …… Declination axis drive motor (W) …… Worm (H) …… Warmun wheel (5A) …… Right longitude axis acceleration switch (6A) …… Red longitude axis deceleration switch (7B) …… Declination axis acceleration switch (8B) …… Declination axis deceleration switch (9) …… Memory device switch (10A) …… Red longitude axis selector ( 10B) ...... Declination axis switch

Claims (1)

[Scope of utility model registration request] 1. A right ascension shaft drive motor (M1) for driving the right ascension axis at a preset speed through a worm (W) and a worm wheel (H), and a declination axis as a worm (W) and a worm. In an equatorial mount for an astronomical telescope having a declination axis drive motor (M2) that is driven at a preset speed via a wheel (H), a red meridian axis drive control circuit (2A),
And the declination axis drive control circuit (2B) to increase or decrease the deceleration axis drive speed and the declination axis drive speed for the observer to adjust the deceleration axis drive speed. (5A), right longitude axis deceleration switch (6A), and declination axis speed increasing switch (7
B), the declination axis deceleration switch (8B) is installed, while the states of the right longitude acceleration switch (5A) and the right longitude axis deceleration switch (6A) are set to the worm (W) of the red longitude axis drive motor (M1). The declination axis drive motor (M2) stores the states of the RA longitude storage device (1A), declination axis speed-up switch (7B), and declination axis deceleration switch (8B) that store the data at a constant cycle during one rotation of A declination axis memory device (1B) that stores at a constant period during one rotation of the worm (W) is installed, and these declination axis memory device (1A) and declination axis memory device (1B) are set by the observer. Writing is started by the operated switch (9), and during this time, the RA longitude axis drive control circuit (2A) and the declination axis drive control circuit (2B) are operated by the RA longitude axis changer (10A) and the declination axis changer ( 10B)
Drive speed is controlled only by the RA longitude axis speed increase switch (5A), RA longitude axis deceleration switch (6A), declination axis speed increase switch (7B) and declination axis speed reduction switch (8B), and the writing is completed. Then, the RA mechanics acceleration switch (5A) written from the RA mechanics memory (1A) and the declination mechanics memory (1B),
The states of the RA longitude deceleration switch (6A), the declination axis speed increasing switch (7B), and the declination axis deceleration switch (8B) are read out, and during this time, the RA longitude axis drive control circuit (2A) and declination axis The drive control circuit (2B) reads this read data by the RA meridian axis switch (10A) and the declination axis switch (10B), and the RA meridian axis speed increasing switch (5A), the RA meridian axis decelerating switch (6A), A device that automatically corrects the drive error of the astronomical telescope whose drive speed is controlled by the declination axis speed-up switch (7B) and declination axis deceleration switch (8B).