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NGC 4275 & sisters in LRGB form 2,5 km of Paris Apr 25, 2015 311 views620×549168.04 kB

Classic view
NGC 4275 & sisters in LRGB form 2,5 km of Paris
Dieter333
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In 2 groups
Bortle
9
N
Com
12h 50m 55s · +25° 34′ 23″
0.29° × 0.25°
1.66″/px
176.46°N
Integration
Baader Luminance 1.25'' Filter
Mix of exposure times
6h
14 Apr, 23 Apr 2015
Baader R 1.25'' Filter
6×300″
30′
23 Apr 2015
Hα
6×300″
30′
23 Apr 2015
Baader Blue 1.25'' Filter
6×300″
30′
23 Apr 2015
Totals
7h 30′
14 Apr, 23 Apr 2015
26%
Baader Luminance 1.25'' Filter
Mix of exposure times=6h
14 Apr, 23 Apr 2015
Baader R 1.25'' Filter
6×300″=30′
23 Apr 2015
Hα
6×300″=30′
23 Apr 2015
Baader Blue 1.25'' Filter
6×300″=30′
23 Apr 2015
Totals7h 30′
14 Apr, 23 Apr 2015 26%
Imaging equipment
Optics
Altair Astro 130 EDT Apo FD7 
Camera
Moravian G2-4000 
Mount
Sky-Watcher AZ-EQ6 GT
Filters
Baader Green 1.25'' Filter  Baader R 1.25'' Filter  Baader Luminance 1.25'' Filter  Baader Blue 1.25'' Filter 
Focus reducer
Altair Planostar 3" Field Flattener 
Software
Pleiades Astrophoto PixInsight
Guiding equipment
Guiding optics
Chercheur 50mm 
Guiding camera
iNova PLA-M
Objects
NGC 4712NGC 4725NGC 4747
Description
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