M81&M82 in RGB/HOO (Guy LE BRAS)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · HD85458 · M 81 · M 82 · NGC 3031 · NGC 3034

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M81&M82 in RGB/HOO

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M81&M82 in RGB/HOO

Hi everyone, in two nights, one of which was fairly hazy (for the HOO version), I was able to take a duo portrait of M81 and M82 with my C8 Edge HD. These two must-see winter galaxies aren't so easy to process. First, I shot an RGB version (150x3mn or 7h30) and then, on the second night, a HOO version (51x5mn or 4h15). Then I mixed the two versions in non-linear mode (50% RGB, 50% HOO). I like the result. Incidentally, I replaced the DBE gradient extraction (in PixInsight) with GraXpert 2.2.2. The result is much better, with greater respect for galaxy detail. Technical details :
- C8 Edge HD
- Celestron CGX mount
- QHY PoleMaster set-up
- ZWO120MM parallel guide+ PHD2
- Pegasus FocusCube 0 focuser
- Mount and sequencer control: NINA
- ZWO ASI 2600 MC PRO camera (gain 101, Temperature - 10°C, Offset 50)
- Lights 150x180s (L-Pro, RGB filter), 51x300s (Antlia HaOIII, HOO filter), 50 DOF
- SIRIL stacking and pre-processing
- GraXpert, PixInsight, BlurXterminator and Noise Xterminator processing
- Luminar NEO post-processing

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Status	Advanced success
Started	...
Astrometry.net job	9122591
PixInsight job	UQH1NXZUNVUYHN5Y1B3WOUID5T3UA39Q
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h55m51s.900
RA (top/left)	09h58m36s.695
RA (top/right)	09h59m33s.850
RA (bottom/right)	09h52m58s.383
RA (bottom/left)	09h52m17s.337

Dec (center)	+69°18′54″.70
Dec (top/left)	+68°51′10″.25
Dec (top/right)	+69°43′38″.72
Dec (bottom/right)	+69°46′29″.13
Dec (bottom/left)	+68°53′53″.43

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M81&M82 in RGB/HOO

M81&M82 in RGB/HOO

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M81&M82 in RGB/HOO

M81&M82 in RGB/HOO

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