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I agreeImaging telescopes or lenses:LACERTA NEWTON 250 F/D 4 1000mm
Imaging cameras:ZWO ASI 1600MM-Cool Pro ASI 1600MM pro
Mounts:iOptron CEM60
Guiding cameras:ZWO ASI ASI120MM
Focal reducers:TS Optics GPU 2" Coma Corrector
Software:Pleiades Astrophoto PixInsight 1.8.5 Ripley , Stellarium, Stellarium Scope
Filters:Zwo 36mm SHO , Zwo 36mm LRGB
Dates:March 26, 2019
Frames: 66x180" bin 0x0
Integration: 3.3 hours
Avg. Moon age: 20.55 days
Avg. Moon phase: 66.65%
Astrometry.net job: 3275532
RA center: 9h 55' 38"
DEC center: +69° 4' 37"
Pixel scale: 0.750 arcsec/pixel
Orientation: 129.686 degrees
Field radius: 0.345 degrees
Resolution: 2703x1916
Data source: Backyard
M81 taken in my garden in Britany (France). Quite significant pollution but with Pixinsight (1st tentative for image processing), I have been able to remove that with the Dynamic Background Extraction process....(crop version)
3H and 18 minutes of total duration with ASI 1600 at -25d and unity gain
Luminance : 19x180sec
Ha : 20x180sec
RVB = 27x180sec
35 Bias, 45 Darks, 15 Flats per filter
Description: reprocessing with Pixinsight again.
Description: Reprocessing and crop.
Description: New processing with PIxinsight.
Description: New processing and crop with pixinsight
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