SU1282060A1 - Method of simultaneous photographying of moon and stars - Google Patents

Abstract

The invention can be used in photographic astrometry, mainly in selenodesy, to determine the exact coordinates of the moon relative to the stars, as well as to determine the positions of the bright planets and. In order to improve the image quality by eliminating the distortion of the relative position in the combined image of point images of the lunar disk relative to the stars. simultaneous photographing is carried out using two telescope tubes separately in two stages on low-sensitive and highly sensitive photographic plates. The first tube with a low-sensitive plate in its focus is diaphragmed, and when photographing bright star-marks another area of the sky, the second tube is diaphragmized; juice sensitive; in focus. In the middle of simultaneous exposure of the Moon and stars, it is produced by a special platoon-trigger device (a device instantly exposing the Moon to a star plate. The geometric centers of the lunar disk images are taken as the optical centers of both plates. The degree of diaphragm corresponds to the minimum difference in sensitivity of photo plates. (L

Description

The invention relates to methods of simultaneously photographing celestial objects with a tremendous contrast of viscosities and significant relative movement.

The purpose of the invention is to improve the image quality by eliminating the distortion of the relative position in the combined image of point images of the lunar disk relative to the images of stars.

The method is carried out as follows.

Diaphragm the lunar tube. dt telescope to the moon. Open the curtains of the lunar and stellar cassettes. Include the movement of the lunar cassette. Open the blinds of both tubes of the telescope and begin simultaneous photographing of the moon and the stars.

The blinds of both tubes of the telescope are synchronously closed and the exposure is stopped, at the same time stopping the movement of the lunar cassette and recording the moment of the End Exposure.

Open the lens hole of the lunar tube and diaphragm the stellar tube. Guide a telescope to a pre-planned and remote from the Una region of the sky with a field of stars of seventh magnitude. Open the blinds of both tubes and start photographing on both plates of the common stars of another sky area. Close the blinds of both pipes. Curtain curtain lunar and stellar cassettes and stop the exposure of the star-marks.

During the photographing of the moon and stars, the central part of the star plate is protected from illumination by two rigidly scrambled parallel screens. Approximately in the middle of simultaneous exposure of the Moon and stars, instantaneous exposure of the Moon to the star plate was carried out using a special platoon-trigger device. The optical centers of the lunar disks are taken as the optical centers of both plates.

Trial observations and additional studies show the possibility of realizing the proposed ability of the lunar plate 8-11 units, and stellar 90 units. and with the successive diaphragmization of both telescope tubes, the exposure time of the moon and stars is 15-20 seconds, while photographing common stars of another sky region, the exposure time is 6-8 minutes. Photographing common star marks is done by guiding the telescope. Asynchronism of the moments of the stop of the lunar cassette of Yakovkin and the end of the exposure in 0, 1 s gives an error of 1.2 µm. The asymmetry of the moments is 0.3 sec. Synchronization of the moments. The stopping of the lunar cassette and the end of the exposure, due to the absence of inertia of the worm gear, is achieved by means of a single break of the electric circuit.

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Claims (1)

Invention Formula  A method of simultaneous photographing of the Moon and stars, including exposure with the same duration to two photographic plates with different sensitivity, set in the focus of the telescope and having a mutual movement, corresponding to the compensation of the Moon's motion relative to the stars, and exposure of flashpoints of flash-tags, which differ , that, with the aim of increasing image quality by eliminating distortions of the relative position of the moon disk point images on the combined image relative to the images stars, simultaneous photographing of the moon and stars are produced by two parallel telescope tubes in two stages separately, the first of which diaphragm the lens of the first telescope tube, which has a low-sensitivity photographic plate at the focus, and the second one takes simultaneous photographs of bright star-marks This diaphragm lens of the telescope tube, the focus of which is highly sensitive photographic plate, and the diaphragm of the first telescope tube is opened, and the degree of diaphragm corresponding to minimalba applies to double long-to-5-5 differences in sensitivity of photo-astrographs. With sensitive plates. 282060 - 2 of the lunar plate 8-11 units., and the star one 90 units. and with the successive diaphragmization of both telescope tubes, the exposure time of the moon and stars is 15-20 seconds, while photographing common stars of another sky region, the exposure time is 6-8 minutes. Photographing common star marks is done by guiding the telescope. The non-synchronization of the moments of the stop of the lunar cassette of Yakovkin and the end of the exposure in O, 1 s gives an error of 1.2 µm. A nonsynchronous torque is 0.3 seconds. Synchronization of the moments. The stopping of the lunar cassette and the end of the exposure, due to the absence of inertia of the worm gear, is achieved by means of a single break of the electric circuit. fO 15 20 five 0 five 0 five 0 Invention Formula  A method of simultaneous photographing of the Moon and stars, including v exposure with the same duration on two photographic plates with different sensitivity, installed in the focus of the telescope and having a reciprocal movement corresponding to the compensation of the motion of the Moon relative to the stars, and exposure of the flash lamp tags about the same In order to improve the image quality by eliminating the distortion of the relative position in the combined image of point images of the lunar disk, the image is relatively The stars, the simultaneous photographing of the moon and the stars, are carried out by two parallel tubes of the telescope separately in two stages, the first of which diaphragm the lens of the first telescope tube, which focuses on. a low-sensitivity photoplate was placed, and the second one produced simultaneous photographing of bright star-marks, thus diaphragming the objective lens of the telescope, the focus of which is highly sensitive photographic plate, and the diaphragm of the first telescope opening is opened, and the degree of diaphragm corresponds to the minimum VNIIPI. Order 7264/44 Edition 421 Random polygons pr-tie, Uzhgorod, st. Project, 4 Subscription