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M106 RGB 4

M106 RGB 4

I was trying to get M106 and NGC4217 in the same field of view. It's a little tight with the ASI1600, C9.25 and f/6.3 focal reducer.

Imaging telescope: Celestron C9.25 SCT
Imaging camera: ZWO ASI1600MM-C
Mounts: Skywatcher EQ6R Pro
Guiding telescope: Celestron C9.25 SCT
Guiding camera: ZWO ASI174 Mini
Focal reducer: Celestron f/6.3 Focal Reducer
Software: Starkeeper Voyager · Pixinsight
Filters: ZWO B 1.25" · ZWO G 1.25" · ZWO R 1.25"
Accessory: Rigel Systems Focuser n-Step · Orion Thin Off Axis Guider TOAG
Dates:March 30, 2021 , March 31, 2021 , April 1, 2021
ZWO B 1.25": 264x100" (gain: 76.00) -15C bin 1x1
ZWO G 1.25": 262x100" (gain: 76.00) -15C bin 1x1
ZWO R 1.25": 289x100" (gain: 76.00) -15C bin 1x1
Integration: 22.6 hours
Darks: ~20
Flats: ~20
Flat darks: ~20
Avg. Moon age: 17.86 days
Avg. Moon phase: 88.77%
Bortle Dark-Sky Scale: 6.00
Basic astrometry details
RA center: 12h 17' 34"
DEC center: +47° 17' 13"
Pixel scale: 0.593 arcsec/pixel
Orientation: 50.443 degrees
Processing was done in PI:
Equalize R,G and B channels.
Combine R,G and B
Extract "L" channel to process independently of RGB.
DBE "L" and "RGB"
Stretch "L" using HistogramTransdormation
Apply contrast to "L" using CurvesTransoformation
Stretch "RGB" using Arcsinh followed by HT
Apply saturation boost to "RGB" using CT
Use LRGBCombine
Apply slight contrast and color boost using CT.

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