M100_Basis

Messier 100 in Coma Berenices

Object identification

StarMovie animation

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galaxy (spiral)

10.1’ x 5.6’

+9.35 mag (V)

Coma Berenices

55 +/- 6 Mio light years

2014-03-25+28+29+30 + 2014-04-17

Gahberg observatory, Upper Austria

- Luminance: Lacerta 10” f/4 Newtonian + Sbig ST2000XM - RGB: 5” f/5 Newtionian + SXV-H9 + Baader RGB - RGB and Luminance capured simultaeosly -

ASA DDM 60pro

Luminance 47 x10 min, RGB 18x10 min each

16.8h

note the very faint LSB-galaxy [TH2002] 318; It was discovered by Trentham and Hodgkin in 2002; Its magnitude is about +21.27 mag (blue) and about -12.02 mag absolute (which means if it was in a distance of 10 pc); For comaprison - M 100 has a magnitude of +10.5 (blue) and -22.4 mag absolute. This means, M 100 is about 10 000 times brighter than [TH2002] 318.