SH2-129 Flying Bat and OU-4 Squid Nebulae with RGB stars (fermion)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD201063 · HD201344 · HD201429 · HD202214 · HD202380 · HD239582 · HD239618 · HD239626

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SH2-129 Flying Bat and OU-4 Squid Nebulae with RGB stars

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SH2-129 Flying Bat and OU-4 Squid Nebulae with RGB stars

Two years into the hobby, I decided to take on the challenge. This is by far the most demanding project for me. I knew the squid is an extremely faint emission nebula before started. However, it's more difficult than I expected. It was hard to get enough photons in a single 10 min sub using a f/5.3 scope and under Bortle 5/6 skies. The weather in Northern California was almost perfect in the past 20 days or so. Cloud coverage was constantly around or below 6-8%, the worst being 12-15%.

Apart from a guiding issue I still need to sort out, imaging went smoothly. Processing the data, however, is another story. For my setup, the signal for the squid is not much above the background noise level. Stretching the squid without blowing up the noise was really pushing my processing skills to the limit. I ended up using a mask in order to suppress the noise in the nonlinear stage. All in all, this was a wonderful journey.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	5950206
PixInsight job	X8HH2CTAGFHZ9WB7NYPXF3A4VPDJM0LW
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h11m44s.65
RA (top/left)	21h05m48s.12
RA (top/right)	21h22m42s.62
RA (bottom/right)	21h18m07s.13
RA (bottom/left)	21h00m35s.89

Dec (center)	+59°58′46″.3
Dec (top/left)	+58°47′20″.1
Dec (top/right)	+59°40′25″.8
Dec (bottom/right)	+61°09′07″.6
Dec (bottom/left)	+60°13′37″.6

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SH2-129 Flying Bat and OU-4 Squid Nebulae with RGB stars

SH2-129 Flying Bat and OU-4 Squid Nebulae with RGB stars

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SH2-129 Flying Bat and OU-4 Squid Nebulae with RGB stars

SH2-129 Flying Bat and OU-4 Squid Nebulae with RGB stars

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