MODIFIED SHAO SPECTROGRAPH FOR SPECTRA WITH LOW RESOLUTION

N. Z. Ismailov; Исмаилов Н. З.; S. A. Alyshov; Алышов С. А.; Sh. K. Ismailova; Исмаилова Ш. К.; F. S. Huseynova; Гусейнова Ф. С.

doi:10.31857/S0004629923080054

MODIFIED SHAO SPECTROGRAPH FOR SPECTRA WITH LOW RESOLUTION

Authors: Ismailov N.Z.¹, Alyshov S.A.¹, Ismailova S.K.¹, Huseynova F.S.²
Affiliations:
1. Shamakhy Astrophysical Observatory named after N. Tusi, Yu. Mammadaliyev settlement
2. Batabat Astrophysical Observatory
Issue: Vol 100, No 10 (2023)
Pages: 918-926
Section: Articles
URL: https://journals.rcsi.science/0004-6299/article/view/147886
DOI: https://doi.org/10.31857/S0004629923080054
EDN: https://elibrary.ru/HLYOJW
ID: 147886

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Abstract
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Abstract

The paper describes an improved spectrograph of the Cassegrain focus of the 2 m 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 line/mm makes it possible to obtain the spectra of stars on the 2 m ShAO telescope up to 18 mag with a resolution of 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.

Keywords

astronomical instruments, spectrographs, CCD spectroscopy

References

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