ShaFES: Shamakhy fibre echelle spectrograph

1Mikailov, KM, 2Musaev, FA, 1Alekberov, IA, 1Rustamov, BN, 1Khalilov, OV
1Nasir al-Din al-Tusi Shamakhi Astrophysical Observatory, Pirqulu, Azerbaijan
2Special Astrophysical Observatory of the Russian Academy of Science, Nizhny Arkhyz, Russia
Kinemat. fiz. nebesnyh tel (Online) 2020, 36(1):44-67
Start Page: Instruments and Devices
Language: Russian

The paper describes the high-resolution fiber-optic echelle spectrograph for the Cassegrain focus of the 2-m telescope at the Shamakhy Astrophysical Observatory. The schematic optical circuit and circuit of a suspended part of the spectrograph are presented. Spectrograph operates in two modes with spectral resolutions: 27500 and 55000, in λ= 370...850 nm region of wavelengths. Results of testing of spectrograph property are analyzed. Results and methods of performed test observations are presented, comparative analysis of both the instrument itself and ShaFES observation data with similar tools is carried out. It is possible to obtain spectra of stars of 8 and 10 star magnitude, with signal-to-noise ratio S/N = 150...200, λ = 580 nm, at hourly exposure in case of resolution R = 55000 and R = 27500, respectively.

Keywords: echelle spectrograph, high resolution spectroscopy, instruments and devices

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