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Contains:  62 p03 Leo, NGC 3521, NGC3521, PGC1137189, PGC1137384, PGC1137731, PGC1138401, PGC1138963, PGC1139079, PGC1139297, PGC1139422, PGC1139481, PGC1139655, PGC1139828, PGC1140097, PGC1140163, PGC1140455, PGC1140630, PGC1140696, PGC1140929, PGC1141325, PGC1141385, PGC1141484, PGC1141502, PGC1141977, PGC1142421, PGC1142434, PGC1142733, PGC1143258, PGC1143295, PGC1143306, PGC1143779, PGC1143972, PGC1144276, PGC1144861, PGC1145190, PGC1145617, PGC1145855, PGC1145956, PGC1146694, PGC1146703, PGC1146993, PGC1147019, PGC1147220, PGC1147661, PGC1147693, PGC1148094, PGC1148156, PGC1148343, PGC1148784, PGC1148913, PGC1148947, PGC1149132, PGC1149202, PGC1149298, PGC1149658, PGC1149689, PGC1149859, PGC1149885, PGC1150041, PGC1150212, PGC1150263, PGC1150462, PGC1151003, PGC1151102, PGC1151230, PGC1151244, PGC1151420, PGC1151550, PGC1151559, PGC1151710, PGC1151844, PGC1152077, PGC1152359, PGC1152435, PGC1153077, PGC1153557, PGC1153758, PGC1153794, PGC1153861, PGC1154433, PGC1154727, PGC1154756, PGC1155154, PGC1155158, PGC1155181, PGC1155288, PGC1155345, PGC1155575, PGC1156089, PGC1156825, PGC1156852, PGC1157159, PGC1157423, PGC1157434, PGC1157557, PGC1157791, PGC1157813, PGC1157827, PGC1158782, PGC1158908, PGC1159155, PGC1159442, PGC1159494, PGC1159854, PGC1160063, PGC1160235, PGC1160557, PGC1160720, PGC1160836, PGC1161037, PGC1161170, PGC1161454, PGC1161470, PGC1161646, PGC1161707, PGC1161837, PGC1161905, PGC1162957, PGC1163026, PGC1163124, PGC1163341, PGC1163504, PGC1163606, PGC1164103, PGC1164407, PGC1164546, PGC1164597, PGC1164684, PGC1165050, PGC1165217, PGC1165563, PGC1166212, PGC1166399, PGC1166445, PGC1166710, PGC1166726, PGC1166814, PGC1166923, PGC1167139, PGC1167321, PGC1167382, PGC1167763, PGC1167828, PGC1168051, PGC1168077, PGC1168119, PGC1169043, PGC135770, PGC135771, PGC135772, PGC135773, PGC135774, PGC156205, PGC156258, PGC213790, PGC33421, PGC33451, PGC33536, PGC33550, PGC33608, PGC33767, PGC33768, PGC33785, PGC33817, The star 62Leo
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NGC 3521 the bubble galaxy, 


            Riedl Rudolf
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NGC 3521 the bubble galaxy

Technical card

Dates:April 21, 2020

Frames: 51x182" ISO1600

Integration: 2.6 hours

Darks: ~25

Flats: ~25

Bias: ~25

Avg. Moon age: 28.08 days

Avg. Moon phase: 2.35%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 21.50

Temperature: 3.00 job: 3536161

RA center: 11h 5' 56"

DEC center: -0° 3' 20"

Pixel scale: 2.542 arcsec/pixel

Orientation: 3.172 degrees

Field radius: 1.092 degrees

Resolution: 2570x1717

Locations: Home, St. Peter/O., Steiermark, Austria

Data source: Backyard


The bubble Galaxy NGC 3521 is located in Leo. Its quit large with 11 x 5,1 arcmin. Distance is about 26 Mio Lj. Sky condition in zenith was excellent, but close to the horizon was a lot of haze. I should have used a UHC filter:-(



Riedl Rudolf
License: None (All rights reserved)

Sky plot

Sky plot


NGC 3521 the bubble galaxy, 


            Riedl Rudolf

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