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- Title
Modified ShAO Spectrograph for Low-Resolution Spectra.
- Authors
Ismailov, N. Z.; Alyshov, S. A.; Ismailova, Sh. K.; Huseynova, F. S.
- Abstract
The paper describes an improved spectrograph of the Cassegrain focus of the 2-meter ShAO reflector using a CCD camera. The classic Universal Astro Grid Spectrograph (UAGS) was adapted to use the Andor CCD camera to obtain spectra of objects with low brightness in the range of 3600–8000 Å. A spectrograph with a diffraction grating of 651 lines/mm makes it possible to obtain the spectra of stars on the 2‑m ShAO telescope up to 18 mag with the resolution R = 1200, with a signal-to-noise ratio of about 50 for half an hour of exposure. The maximum allowable resolution is R = 3400 with binning 1 × 1. The complex can be used for observations of various types of transient objects, variable stars, and extragalactic objects.
- Subjects
DIFFRACTION gratings; CCD cameras; STELLAR spectra; VARIABLE stars; SIGNAL-to-noise ratio; SURFACE brightness (Astronomy); SPECTROGRAPHS; TELESCOPES
- Publication
Astronomy Reports, 2023, Vol 67, Issue 10, p1056
- ISSN
1063-7729
- Publication type
Article
- DOI
10.1134/S106377292308005X