Andromeda Galaxy from a Bortle 7 area (Louis Leroux)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: 35 And · 35 nu. And · Andromeda Galaxy · HD3431 · HD4143 · HD4174 · HD4322 · HD4669 · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224 · The star ν And

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Andromeda Galaxy from a Bortle 7 area

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Andromeda Galaxy from a Bortle 7 area

Here is the famous M31 in LHaRGB from a suburban sky in northern France (Douai). My backyard is under a lightpolluted area (approx. Bortle 6/7). This image is the result of around 50 hours of exposure spread over 16 sessions. It's a mosaic of 2 tiles (25h per tile). Just disappointed not to have any Ha signal around Andromeda...

EXIF :
-ZWO 533MM Pro
-Askar FRA400 f/5.6
-Sky Watcher AZ-EQ6
-Asiair plus + EAF + EFW
-Antlia filters
-Omegon 50/180
-ZWO ASI 120MM mini
-16 nights (from Sept 2022 to Sept 2023)
-L = 180*180s (x2)
-Ha = 137*300s (x2)
-R = 40*180s (x2)
-G = 35*180s + 26*180s
-B = 40*180s + 25*180s
-25h34 per tile (51h08 total integration time)
-Bortle 6/7 (SQM 18.98)
-Pix & PS

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Status	Advanced success
Started	...
PixInsight job	3KN4UME3IFJX4R094U4844MP33UBOW47
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m43s.68
RA (top/left)	00h38m01s.19
RA (top/right)	00h50m56s.75
RA (bottom/right)	00h47m36s.54
RA (bottom/left)	00h34m27s.77

Dec (center)	+41°14′54″.8
Dec (top/left)	+39°58′34″.3
Dec (top/right)	+41°07′08″.1
Dec (bottom/right)	+42°30′28″.7
Dec (bottom/left)	+41°20′36″.4

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Andromeda Galaxy from a Bortle 7 area

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