Crescent Nebula (Sharpless 105, Caldwell 27, NGC6888) (Robin Livermore)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · HD192003 · HD192020 · HD192041 · HD192078 · HD192102 · HD192123 · HD192163 · HD192182 · HD192303 · HD192361 · HD192422 · HD192443 · HD192444 · HD192537 · HD227991 · HD228003 · HD228066 · HD228067 · HD228077 · HD228099 · HD228127 · HD228137 · HD228139 · HD228152 · HD228153 · HD228163 · HD228171 · HD228185 · HD228186 · And 44 more.

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Crescent Nebula (Sharpless 105, Caldwell 27, NGC6888)

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Crescent Nebula (Sharpless 105, Caldwell 27, NGC6888)

Crescent Nebula, my first attempt with an all new setup - RASA 11v2, CEM120, ASI2400MC pro with NBZ filter. Plenty of problems with the stars in this - I have a tilt/backspace adapter on order from Octopi Astro to help me sort this out (sort of inevitable with a full frame sensor and RASA).

But I'm more than impressed by the light gathering of the RASA, and the ASI2400 and NBZ filter have worked well too.

The guiding wasn't perfect, I need to look at my RA guide speed, as it was short of what it should be in the calibration.

Revised with additional data in 2022 with closer crop

Original
B
Final
C

B

Description: Complete rework with addition of data from 2022, which required a closer crop.

Uploaded: ...

C

Description: backed off stretch a little

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	5910654
PixInsight job	P6LUFJKVGOMZS7O6G2FKVY6CHSINEVH8
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h12m10s.38
RA (top/left)	20h10m50s.13
RA (top/right)	20h09m02s.19
RA (bottom/right)	20h13m28s.61
RA (bottom/left)	20h15m22s.00

Dec (center)	+38°20′19″.3
Dec (top/left)	+39°11′51″.1
Dec (top/right)	+37°41′21″.6
Dec (bottom/right)	+37°28′45″.9
Dec (bottom/left)	+38°59′03″.2

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Crescent Nebula (Sharpless 105, Caldwell 27, NGC6888)

Crescent Nebula (Sharpless 105, Caldwell 27, NGC6888)

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Contribution Index (beta):

Crescent Nebula (Sharpless 105, Caldwell 27, NGC6888)

Crescent Nebula (Sharpless 105, Caldwell 27, NGC6888)

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C

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