6m telescope instrumentation and methods

• MSS — Main Stellar Spectrograph at the Nasmyth-2 focus
• NES — High Resolution Echelle Spectrometer at the Nasmyth-2 focus
• Speckle — digital speckle interferometer at the prime focus
• SCORPIO-1 — Spectral Camera with Optical Reducer for Photometrical and Interferometrical Observations at the prime focus
• SCORPIO-2 — multi-mode spectrograph at the prime focus
• MPPP — Multicolor Panoramic Photometer-Polarimeter at the prime focus
• Adapter PF — adapter at the primary focus
• FFOREST — Fiber Feed Optical Russian Echelle Spectrograph