Crescent nebula (aka croissant) (petelaa)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · HD192003 · HD192020 · HD192102 · HD192123 · HD192163 · HD192182 · HD192303 · HD192361 · HD192443 · HD192444 · HD228139 · HD228152 · HD228153 · HD228185 · HD228186 · HD228198 · HD228205 · HD228243 · HD228261 · HD228262 · HD228277 · HD228289 · HD228290 · HD228291 · HD228304 · HD228311 · HD228324 · HD228376 · HD228409 · And 5 more.

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Crescent nebula (aka croissant)

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Crescent nebula (aka croissant)

I've been having some issues with circular reflections in my new ODK12. And weather has been so horrible this summer, that I've not yet had the opportunity do do some digging into the source of the reflections.
So as an interim measure, I decided to ignore (and crop away) the issue.
Fast forward to today. As is always the case with spells of bad weather: they only clear when it's a full moon. So I decided to use my H-alpha filter.
Imagine my surprise when all of a sudden the reflections were gone! This is nearly the whole FoV, only some stacking edges removed.

Anyway. About this picture: shot with a non-cooled DSLR, on a hot summers night, under a nearly full moon. Combined with some test data of last week, an equally hot summers night. Where hot means Dutch hot, so about 25 degrees Celcius. Even through all the noise, I am so happy with the new scope! Can't wait to put a proper camera on it. Especially now that I know that the reflection-issues are fixable!

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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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	4912626
PixInsight job	L07TRXJKSN8NWMRQEK399BH6MHBQXSLJ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h11m58s.412
RA (top/left)	20h10m45s.953
RA (top/right)	20h10m08s.345
RA (bottom/right)	20h13m09s.863
RA (bottom/left)	20h13m49s.896

Dec (center)	+38°20′17″.66
Dec (top/left)	+38°49′39″.59
Dec (top/right)	+37°55′54″.41
Dec (bottom/right)	+37°50′53″.48
Dec (bottom/left)	+38°44′33″.28

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Crescent nebula (aka croissant)

Crescent nebula (aka croissant)

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Image Index:

Contribution Index (beta):

Crescent nebula (aka croissant)

Crescent nebula (aka croissant)

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Acquisition details

Description

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