Universal focal reducer for small telescopes
This paper is devoted to the memory of Dr Victor Afanasiev and his immense legacy. The report highlights the capabilities of two new instruments tested at the 1-m Zeiss-1000 telescope of SAO RAS: The Stokes Polarimeter (StoP) and the MAGIC focal reducer. Optimized for the study of active galactic nuclei, methodically, these instruments are suitable for a wide range of small telescope tasks. The fields of view of StoP and MAGIC are 6' and 13' for direct images, respectively. The StoP device allows one to conduct photometric observations and polarimetric ones with a double Wollaston prism; the spectral mode was added to MAGIC. For a star-like target up to 14 mag in medium-band filters with a seeing of 1″ for 20 min of total exposure, the photometry accuracy is better than 0.01 mag and the polarization accuracy is better than 0.6%. The available spectral range obtained with the volume phase holographic grating in MAGIC is 4,000-7,200 AA with a dispersion of 2A/px. StoP and MAGIC received the first light in 2020 and are used in test mode at the Zeiss-1000. The report discusses the first results obtained by the authors with new instruments, as well as further prospects.
- Pub Date:
- January 2022
- focal reducer;
- Astrophysics - Instrumentation and Methods for Astrophysics
- accepted in Ast.Nach. This paper was present at 13th SCSLSA in a special session dedicated to the memory of Victor Leonidovich Afanasiev who passed away in December 2020