Caucasian Mountain Observatory SAI MSU Ready to observe LIGO/Virgo public alerts 43°44'10" N, 42°40'03" E, 2112m a.s.l. 30 km south of Kislovodsk city ~ 80 km from intnl. A/p MinVody (MRV) Kornilov V et al. 2014 PASP 126, 482

2,5-m alt-azimuthal telescope (SAGEM/REOSC, France) D=2,5 m Corrected FOV ~40’’, 360-1000 nm 80% of light concentration in ~0,3” Cassegrain + 4 Nasmyth foci, 2-3 min switching time Slewing speed 3 deg/s ASTRONIRcam IR camera (1024х1024, 0.9-2.5 micron) + low-resolution spectrograph (slit 0.9-100”,R=1500); J, H, Ks, H2, Br Gamma, Kcont, CO, FeII, CH4 on, CH4 off, polarizer 0°, polarizer 90°. Optical camera 4k х 4k CCD (UBVRI + SDSS, OIII, SII etc.) Speckle-polarimeter + Andor iXon 897 (speckle interferometry, polarimetry, fast photometry @ 0.4-1.1 micron). Forthcoming in 2018: Two-channel low-res. spectrograph (3600-5600А, 5800-7200А, R ~ 2500, slit 186”) 60-cm RC automatic direct drive telescope Potanin et al 2017 Ast Rep 61, 715