JP2568797B2 - Astronomical dome rotation control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the rotation of a celestial dome.

[0002]

2. Description of the Related Art When observing an astronomical object from a slit formed in an astronomical dome using an astronomical telescope installed in the astronomical dome, the astronomical dome is rotated to align the slit with a desired observation direction. Adjust the direction of the telescope to capture the desired star from the field of view in the slit. And
In astronomical observation, there are cases where a captured star is observed on the spot, and cases where a star is automatically tracked as it is and observation is performed for a long time or a photograph is taken.

[0003]

However, in the case of such a long-time observation, it is easy to rotate the astronomical telescope itself in accordance with the movement of the star by using an equatorial mount. There was no effective way to rotate the dome with it. Therefore, it is necessary to manually rotate the celestial dome in accordance with the automatic rotation of the astronomical telescope, and to always match the direction of the celestial dome with the slit, which is very troublesome.

The present invention has been made by paying attention to such a conventional technique, and provides a method of controlling the rotation of an astronomical dome which can automatically rotate the astronomical dome while maintaining the positional relationship with the astronomical telescope. To provide.

[0005]

In order to achieve the above object, a method for controlling the rotation of an astronomical dome according to the present invention comprises the steps of: providing an astronomical telescope with a sensor for detecting a position of the astronomical dome with respect to the astronomical telescope; With this signal, the celestial dome is rotated while maintaining a fixed positional relationship with the astronomical telescope.

[0006]

The astronomical telescope is provided with a sensor, which detects a certain positional relationship between the astronomical dome and the astronomical telescope. If the positional relationship between the astronomical telescope and the astronomical telescope shifts due to the rotation of the astronomical telescope, the state is detected by a sensor, and the position of the astronomical dome is corrected. By repeating this, the astronomical dome follows the astronomical telescope while maintaining a fixed positional relationship.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram of the slit 2 viewed from inside the celestial dome 1, and FIG. 2 is a diagram of the slit viewed from above. Reference numeral 3 denotes a slide cover for covering the slit 2.

On the west side of the slit 2, a reflector 4 is provided. On the other hand, the astronomical telescope 5 is provided with a photoelectric sensor 6. The photoelectric sensor 6 irradiates a special light beam L, which is an infrared intermittent wave having a constant pulse, and can detect a light beam L that has hit the reflecting plate 4 and has been reflected. The light beam L is accurately reflected only by the reflection plate 4, and the photoelectric sensor 6 does not detect the light beam L reflected by the inner surface 1 a other than the reflection plate 4. As described above, the photoelectric sensor 6 irradiates a special light beam L and the photoelectric sensor 6 detects only this light beam L from its pulse. It is devised so that the detection performance of the photoelectric sensor 6 is not affected by various light or electromagnetic waves jumping from the camera.

As shown in FIG. 2, when the astronomical telescope 5 is directed straight to the slit 2, the mounting angle of the photoelectric sensor 6 is set so that the light beam L catches the east end 4a of the reflector 4. ing. The photoelectric sensor 6 is connected to the rotation drive unit 7 of the astronomical telescope 5 so that the astronomical telescope 5 is rotated only when the photoelectric sensor 6 receives the light beam L reflected from the reflector 4. Has become.

Next, the operation of this embodiment will be described with reference to the case where the sun S is observed by the astronomical telescope 5 as an example. The observer first manually rotates the celestial dome 1 to turn the position of the slit 2 toward the sun S. Next, the sun S is captured within the field of view of the astronomical telescope 5 by looking through the astronomical telescope 5. When the astronomical telescope 5 is adjusted to the sun S, the astronomical telescope 5 is then switched to automatic rotation control for tracking the sun S.

When the astronomical telescope 5 starts to rotate automatically, the light beam L emitted from the photoelectric sensor 6 catches the reflecting plate 4 and is reflected there and returns to the photoelectric sensor 6. As a result, the celestial dome 1 starts to rotate in the same direction as the astronomical telescope 5 by the rotation drive unit 7. When the astronomical dome 1 rotates, the rotational speed of the astronomical dome 1 is faster than the rotational speed of the astronomical telescope 5, so that the light beam L from the photoelectric sensor 6 deviates from the east end 4 a of the reflector 4 toward the slit 2. , The light beam L is the photoelectric sensor 6
And the rotation of the celestial dome 1 stops.
Then, even if the rotation of the astronomical dome 1 is stopped, since the astronomical telescope 5 is still rotating automatically, the light beam L of the photoelectric sensor 6 catches the reflector 4 again, and the astronomical dome 1 starts to rotate. By repeating this, the astronomical dome 1 follows the astronomical telescope 5 while maintaining the positional relationship between the slit 2 and the astronomical telescope 5.

In the above description, the reflection plate 4 and the photoelectric sensor 6 are provided on the west side of the slit 2, but may be provided on the east side. Moreover, you may provide in both. Further, a reflective photoelectric sensor 6 having both functions of irradiating and receiving the light beam L
However, the astronomical telescope 5 may be provided with only a device for irradiating the light beam L, and the astronomical telescope 5 may be provided with another device only for receiving the light beam L. In addition, ray L
Depending on the type, the reflecting plate 4 is not necessarily required, and the light may be reflected by the inner surface 1a of the astronomical telescope 5.

[0013]

The method of controlling the rotation of a celestial dome according to the present invention is as described above. Since the celestial dome follows the astronomical telescope while maintaining a fixed positional relationship, Long-term observation and photography can be performed without worrying about the positional relationship between the astronomical telescope and the slit.

[Brief description of the drawings]

FIG. 1 is a side view of a celestial dome showing an embodiment of the present invention.

FIG. 2 is a plan view inside the celestial dome.

[Explanation of symbols]

 Reference Signs List 1 astronomical dome 2 slit 5 astronomical telescope 6 photoelectric sensor (sensor)

Claims (1)

(57) [Claims] An astronomical dome rotation control method capable of observing an astronomical dome using an internal astronomical telescope from a slit formed with an opening, wherein the astronomical telescope is provided with a sensor for detecting a position of the astronomical dome with respect to the astronomical telescope. By the signal from the sensor
A method for controlling rotation of a celestial dome, comprising rotating the celestial dome while maintaining a fixed positional relationship with the astronomical telescope.