Andomeda's Messier 31 - HaLRGB mosaic (Arnaud Peel)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda Galaxy · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

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Andomeda's Messier 31 - HaLRGB mosaic

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Andomeda's Messier 31 - HaLRGB mosaic

Messier 31 is hard to get with a 300mm newtonian f/4 without a large field camera , but it still needs 2 panels (at least ) .

M31 is really for me like a mystical object , the closest galaxy to us (put apart these Magellanic clouds and some dwarf galaxies)

I had made it in my youth on a Schmidt 203mm (not cassegrain , it was necessary to cut the film and put it in a base then fix it in the center of the central spider) on Technical Pan 2415 hyper sensitized in 1982 and therefore in B&W

…. Anyway, I like this color version better :-) and on the Newton 300, it allows you to find some details in dark clouds in particular.

Mosaic of 2 panels

8 nights : 21,22,23,24,25, 26, 28 August

80 Light subs @180s gain zero and -10°C and

62 Halpha subs @300s gain 139 and -10°C and

40 Blue subs @180s gain zero and -10°C

40 Green subs @180s gain zero and -10°C

40 Red subs @180s gain zero and -10°C

Original
Final
F

F

Description: Cosmetics on the stars and suppression of gradient

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Status	Advanced success
Started	...
Astrometry.net job	3823814
PixInsight job	HUFUIX55SN8N3FHX4SVW4EKIYSGHUZM5
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h42m28s.125
RA (top/left)	00h46m48s.640
RA (top/right)	00h46m53s.153
RA (bottom/right)	00h37m58s.220
RA (bottom/left)	00h38m12s.344

Dec (center)	+41°16′16″.90
Dec (top/left)	+40°16′45″.90
Dec (top/right)	+42°16′16″.69
Dec (bottom/right)	+42°15′37″.56
Dec (bottom/left)	+40°16′06″.53

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Andomeda's Messier 31 - HaLRGB mosaic

Andomeda's Messier 31 - HaLRGB mosaic

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Andomeda's Messier 31 - HaLRGB mosaic

Andomeda's Messier 31 - HaLRGB mosaic

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