Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984rpspr.......42t&link_type=abstract
In its USSR Rept.: Space (JPRS-USP-84-006) p 42 (SEE N85-33128 22-12) Transl. into ENGLISH from Kommunist (Moscow), 15 Aug. 1
Astronomy and Astrophysics
Astrophysics
Hubble Space Telescope, Spaceborne Telescopes, Stabilization, Astrophysics, Spaceborne Astronomy
Scientific paper
The progress of the flight of the automatic space telescope Astron is reported and some of the features of the equipment carried by this spacecraft are outlined. It is noted that spectra with high resolution and other valuable astrophysical data are still obtained through the Astron, although it was designed to operate for only 1 year. Stabilizing system is necessary because the spectrometer's diaphragm, in which the image of an object to be observed must be captured and held, is only 40 micrometers in diameter. The telescope must therefore be aimed at this object with a permissible deviation of only a few tenths of a second of arc. The stabilization system has two operating modes. A portion of the light received from the object is used to control the system in the first mode. Photographing of objects that are several thousands of times fainter is possible in the second mode. The telescope is kept in the prescribed position by signals from a relatively bright star which is located near the object under observation.
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