First decent shot with the new astrograph RS-220 (Richard-Slafogt system with a field flattener, f'=518mm, D=220mm, design by V.Terebizh, construction by G.Borisov).
A base for a bicolor, or SHO palette. OIII is still being captured, sulfur is done, but there's almost none of it there. I've gathered 50 frames for oxygen, but it's coming out noisy; I'll add more.
Hydrogen was captured from July 3-6, 2022.
Sarov, balcony astrophotography.
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