JPH05882Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is based on a declination axis that rotates relative to the red diameter scale (or hour angle scale) installed around the polar axis of an equatorial mount for an astronomical telescope. indicators installed on the side housing;
Alternatively, the present invention relates to an illumination mechanism such as an indicator installed on a lens barrel holding shaft side housing that rotates relative to a declination scale installed around a declination axis.

(Prior art and its problems) In conventional equatorial mounts for astronomical telescopes, all of these types of indicators are simply carved or pasted onto a plate at a predetermined position on the outer periphery of the housing.
There are almost no indicators that are equipped with lamps for illumination. Therefore, when performing astronomical observations at night, it is necessary to hold a portable lighting device in one hand while operating the equatorial mount with the other, which is a drawback in that smooth and quick operation is not possible. have.

However, on the other hand, if lamps, etc. for indicator lighting are installed on the outer circumference of the equatorial mount, it is necessary to install power supply cords for connecting an external power source to the outside of the equatorial mount, and these cords become a hindrance during astronomical observation. At the same time, depending on the illumination condition of the index illumination lamp, the illumination light may enter the field of view of the telescope, causing problems in astronomical observation or photography of the observation target.

(Purpose of the invention) In view of the above-mentioned circumstances, the present invention eliminates the need to provide power supply cords outside the equatorial mount, and enables an illumination state in which the illumination light does not enter the field of view of the telescope. The object of the present invention is to provide an index illumination mechanism for an equatorial mount for an astronomical telescope, which enables smooth and quick equatorial mount operation even at night.

(Structure of the invention) Therefore, the index illumination mechanism of the equatorial mount for an astronomical telescope according to the invention includes: a shaft member extending from a supported member; a bearing member rotatably supporting the shaft member;
a cylindrical part that extends from the supported member and overlaps with the outer periphery of the bearing part that supports the shaft member of the bearing member with a space therebetween, and a part that faces the cylindrical member of the bearing member; An annular scale is provided on the cylindrical part, and the cylindrical part includes an index facing the annular scale, an illumination means arranged on the back side of the index so as to illuminate the annular scale side, and an illumination range of the illumination means arranged on the annular scale side. A shielding means for regulating the lighting to a predetermined range is provided, and cords for supplying power to the illumination means are disposed in the space between the bearing member and the cylindrical portion.

(Embodiment of the invention) The illustrated equatorial mount for an astronomical telescope has a polar axis side housing 20 connected and supported to a base 10 so as to be relatively swingable in the elevation angle direction, and a polar axis side housing 20 that is relatively rotatable in the circumferential direction of the polar axis. It has a declination axis side housing 30 connected and supported to the housing 20, and a lens barrel holding axis side housing 40 connected and supported to the declination axis side housing 30 so as to be relatively rotatable in the circumferential direction of the declination axis. , an annular red diameter scale 21 provided on the outer periphery of the polar axis side housing 20
and a red diameter indicator 31 provided on the declination axis side housing 30, an annular declination scale 32 provided on the outer periphery of the declination axis side housing 30, and a red diameter indicator 31 provided on the lens barrel holding axis side housing 40. The declination indicators 41 are positioned opposite to each other.

At the indicator installation position of each housing 30 and 40, a substantially tilted U is provided so as to cover the upper part of the indicator.
Index covers 310, 41 as character-shaped shielding means
0 is formed protrudingly, and each index cover 310,
Inside 410 are light emitting diodes 311 and 41, respectively.
1 is installed with its light emitting part facing the index illumination direction. Therefore, each light emitting diode 311, 41
The irradiation area of the irradiation light irradiated from 1 toward the index is restricted to a predetermined range X by the index covers 310, 410.

The light emitting diode 311 is connected to a power supply cord 312 built in an annular space Y formed in the overlapping region of the polar axis side housing 20 and the declination axis side housing 30 and attached to the inner peripheral surface of the declination axis side housing 30. Current is supplied from an external power source (not shown) through the power supply terminal 313. Further, the light emitting diode 411 is also connected to a power supply cord built in the annular space formed in the overlapping region of the declination axis side housing 30 and the lens barrel holding axis side housing 40 and the lens barrel holding axis side housing 40. Via the power supply terminal attached to the inner circumferential surface,
Current is supplied from an external power source. Therefore, the declination axis side housing 3
Even when the lens barrel holding shaft side housing 40 rotates, the light emitting diode, power supply cord, and power supply terminal all rotate in synchronization with each other, so some variation occurs in the positional relationship between each member. It has become like that.

The above power supply terminals are all connected to an external power source via an external controller 100, and this controller 100 controls the ON/OFF of each light emitting diode and adjusts the luminance of light by controlling the supply current value. It is beginning to be practiced. Therefore, when operating the equatorial mount during nighttime astronomical observation, necessary index illumination can be instantaneously obtained by operating the controller 100 to cause each of the light emitting diodes 311 to 411 to emit light at a desired brightness.

Note that it is desirable to use a red light emitting diode as the light emitting diode due to the nature of night observation or photography, but the invention is not limited to this. Further, each of the above-mentioned indicators has a triangular plate attached to a predetermined position on the outer circumferential surface of the housing, but this may be replaced by forming a triangular stamp directly on the outer circumferential surface of the housing.

(Effects of the invention) According to the index illumination mechanism according to the invention, when operating an equatorial mount during nighttime astronomical observation, by setting the illumination means to the desired luminous intensity, it is possible to use both hands to Declination adjustment becomes possible. Furthermore, since the irradiation range of the illumination light is limited by the shielding means to the index or the scale area near the index, it is possible to prevent the illumination light from entering the field of view of the telescope. Furthermore, since the power supply cords for the illumination means are built into the cylindrical part, there is no need to install anything on the outer periphery of the equatorial mount that would obstruct ceiling observation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an equatorial mount in use, showing an equatorial mount employing an embodiment of the index illumination mechanism according to the present invention, FIG. FIG. 4 is a sectional view taken along the line in FIG. 3. 20...Polar axis side housing (bearing member), 21
...Right ascension scale (annular scale), 30... Declination axis side housing (supported member), 31... Right ascension index (index), 32... Declination scale (annular scale), 40... Lens barrel Holding shaft side housing, 41... Declination index (index), 310, 410... Index cover (light shielding means), 311, 411... Light emitting diode (lighting means), 312... Power supply cord (power supply cords) , Y... annular space (space part).

Claims (1)

[Claims for Utility Model Registration] A shaft member extending from a supported member; a bearing member rotatably supporting the shaft member; and a bearing member extending from the supported member and supporting the shaft member of the bearing member. a cylindrical part that overlaps with the outer periphery of a supporting bearing part with a space therebetween; an annular scale is provided in a part of the bearing member that faces the cylindrical part; The part includes: an indicator facing the annular scale; an illumination means arranged on the back side of the indicator so as to illuminate the annular scale side; and an illumination range of the illumination means is regulated to a predetermined range on the annular scale side. An astronomical telescope for an astronomical telescope, characterized in that a shielding means is provided, and a cord or the like for feeding power to the illumination means is disposed in the space between the bearing member and the cylindrical part. Equatorial mount indicator illumination mechanism.