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Contains:  M 106, M106, NGC 4217, NGC 4226, NGC 4231, NGC 4232, NGC 4248, NGC 4258, NGC4217, NGC4226, NGC4231, NGC4232, NGC4248
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M106 and NGC 4217, 


            Jonathan W MacCollum
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M106 and NGC 4217

Technical card

Imaging telescopes or lenses:Orion 203/1000 f/4.9

Imaging cameras:ZWO ASI183MM-pro

Mounts:Celestron CGEM

Guiding telescopes or lenses:ZWO OAG

Guiding cameras:ZWO ASI 178MM

Software:PixInsight PinInsight 1.8.5Isbeorn N.I.N.A.PHD 2

Filters:Hutech IDAS LPS D1 2"

Accessory:Skywatcher 2" Coma Corrector f/4

Dates:May 24, 2019

Frames:Hutech IDAS LPS D1 2": 150x60" (gain: 111.00) -10C bin 1x1

Integration: 2.5 hours

Darks: ~60

Flats: ~30

Flat darks: ~30

Avg. Moon age: 20.19 days

Avg. Moon phase: 70.22%

Bortle Dark-Sky Scale: 4.00 job: 2713330

RA center: 12h 17' 29"

DEC center: +47° 12' 58"

Pixel scale: 0.496 arcsec/pixel

Orientation: 177.796 degrees

Field radius: 0.452 degrees

Resolution: 5447x3644

Data source: Backyard


First light with asi 183mm at 0.5"/px imaging scale.
Guiding this night was better than ever but still lots of fast oscillation in RA keeping my stars flat and oblong. My cgem's RA is certainly not up for the task, but a bit of motion blur decon did help a little.

For comparison, here's a 6 hour integration from my OSC camera that has a twice as big image scale:



Jonathan W MacCollum
License: None (All rights reserved)

Sky plot

Sky plot


M106 and NGC 4217, 


            Jonathan W MacCollum