毎年恒例、春といえば球状星団。
2023/3/19 02:32-04:06JST at Okayama pref. east. Nadirus16 mod (D=406mm) with Starizona Nexus (f/3, f=1200mm) and ASI1600MM-cool, on EQ platform without auto-guiding. LRGB composite, L for 202×10s with LPS-D1, RGB 146×10s, total exposure 58m. Dark cosmetic correction and ABE for each linear subframe, and BTX applied.
