IC 5146 Cocoon First Light 294MM (Larry S)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B168 · Cocoon Nebula · IC 5146 · Sh2-125 · VdB147

IC 5146 Cocoon First Light 294MM, Larry S

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IC 5146 Cocoon First Light 294MM

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IC 5146 Cocoon First Light 294MM

Needed a fairly bright object to test out new ASI294MM during full moon phases, so I picked god old Cocoon.

I had one of the first ASI294MMs delivered last winter. It gave me a lot of problems with narrowband calibration, flats nearly impossible to get right. I returned it. I was left with a filter wheel and a set of 31mm Astrodons that did not work with my new ASI2600MM. I thought about selling them, but decided to try another 294MM now that they have been in production for a while and may have initial bugs resolved.

I took narrowband and wideband lights of this target and made corresponding sky flats and the usual darks and flat darks. I did not see the crazy blobs in the flats through the narrowband filters that I had experienced with first camera. Everything calibrated well, no banding or other distortions evident.

There was really no OIII signal in this target, and I did not find SHO, HSS, or HSO color blends to be very attractive, so I only fully processed the HaRGB combination. I'm fairly happy with this for first light. I will need to find optimum gains and and exposures for using it with my telescopes. I have not tried Bin1 mode as yet.

Data from 8/22,23/2021
Ha 40x360" gain 121 offset 30 -10C
RGB 120x90"

Final
Original
B

Cloudy Nights

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Status	Advanced success
Started	...
PixInsight job	NZ1MDF24PGEMTKLTOPVN7PXZ015OT6WG
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h53m32s.86
RA (top/left)	21h55m41s.82
RA (top/right)	21h54m43s.48
RA (bottom/right)	21h51m21s.100
RA (bottom/left)	21h52m23s.57

Dec (center)	+47°11′37″.1
Dec (top/left)	+46°50′33″.1
Dec (top/right)	+47°39′36″.7
Dec (bottom/right)	+47°32′32″.3
Dec (bottom/left)	+46°43′33″.10

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IC 5146 Cocoon First Light 294MM

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