Messier 108 in Ursa Major
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2017-03-27 + 28 + 30 + 31
Gahberg observatory, Upper Austria
500 mm ASA Newtonian, f = 2000 mm (Harald Strauß) Sbig ST11000 (Harald Strauß)
ASA DDM 85 (Harald Strauß)
Luminance 30 x 5 min / RGB 15 x 5 min each filter
6 h 15 min
galaxy (SB(s)cd)
8.6’ x 2.4’
+9.9 mag (V)
Ursa Major
~ 30 Mio Ly (V = 697 km/s)
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image aquisition Harald Strauß image processing Markus Blauensteiner