ADAM low- and medium-resolution spectrograph for 1.6-m AZT-33IK telescope

TL;DR

This paper presents the design, laboratory testing, and on-telescope performance of a low- and medium-resolution spectrograph for the 1.6-m AZT-33IK telescope, achieving high efficiency suitable for extragalactic observations.

Contribution

The paper introduces a new spectrograph for a 1.6-m telescope with laboratory validation and real-world performance metrics, including high quantum efficiency.

Findings

Spectrograph achieves up to 56% total quantum efficiency.

Instrument enables object classification and redshift measurement for magnitudes m_AB~20-21.

Successful tests on the telescope confirm its suitability for astronomical observations.

Abstract

We describe the design of a low- and medium-resolution spectrograph ( R=300-1300) developed at the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS) for the 1.6-m AZT-33IK telescope of Sayan Observatory of the Institute of Solar-Terrestrial Physics of the Siberian Branch of the Russian Academy of Sciences. We report the results of laboratory measurements of the parameters of the instrument and tests performed on the SAO RAS 1-m Zeiss-1000 telescope. We measured the total quantum efficiency of the "spectrograph + telescope + detector" system on AZT-33IK telescope, which at its maximum reaches 56%. Such a hight transparency of the spectrograph allows it to be used with the 1.6-m telescope to determine the types and redshifts of objects with magnitudes m_AB~20-21, that was confirmed by actual observations.