M100 or NGC4321, the "Fan" galaxy

 Posted: Mar 29th, 2026
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NGC
IC
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Technical Info
Telescope/Lens: Прямофокусник 300/996 "Изд.№3"
Camera: QHYCCD QHY5III585M
Mount: МТ-120
Guide Scope: ED kenko 60 -400mm
Guide Camera: T7m
Software: NINA, Pixlnsight, ФШ
Accessories: Sharpstar 0.95x MPCC Сдвоенное колесо фильтров От Ивана Ионова
Exposure:
10 x 180" ISO/Gain: 9 - Touptek Lum 36мм
72 x 180" ISO/Gain: 9 - Touptek R 36мм
40 x 180" ISO/Gain: 9 - Touptek G 36мм
54 x 180" ISO/Gain: 9 - Touptek B 36мм
Orange, Bortle 6 zone:
 Ekaterinburg Rayon Ozera Gluhoe, Russia
 Mar 21st, 2026
8 h 48 m
24
Resolution: 2180x1576 px
Scale: 1219 KB

I collected data over five nights from March 17th to 27th. The integration is a bit uneven across channels, but it's probably enough now. I stretched the background a bit and some dust started to show (or so it seems to me).

Galaxy M100 (other designations: NGC 4321, ZWG 99.30, UGC 7450) is a spiral galaxy located in the constellation Coma Berenices. It is situated approximately 55 million light-years (16.86 million parsecs) from Earth.

This spiral galaxy was discovered by the French astronomer Pierre Méchain on March 15, 1781, and was later included by Charles Messier in his catalog as number 100.

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