Needle Galaxy NGC 4565 (Joel Lee)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: HD109415 · HD109627 · IC 3531 · IC 3533 · IC 3536 · IC 3543 · IC 3546 · IC 3571 · IC 3582 · IC 3599 · NGC 4555 · NGC 4562 · NGC 4565 · Needle Galaxy

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Needle Galaxy NGC 4565

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Needle Galaxy NGC 4565

The Needle Galaxy is one of the most famous edge-spiral galaxies. At longer integrations, the galaxy's edges exhibits more blue newer stars and seems to be slightly distorted despite its initial appearance. I found it interesting that there are numerous other edge-on galaxies in this field.

This was a good middle of the night target to quickly grab images of. It's fairly bright, easy to process, and of a fairly large size. Some interesting things I learned are that there are often SEVERE variances in atmospheric quality leading to some nights being unkeepable. We've had some perfectly clear nights with absolutely terrible seeing (6+ HFD). Also have had a lot of perfect days followed by 10PM and later enshrouding by fog. At least the weather is super nice all the time.

I feel like that for me I already managed to gather most of the details in the first couple of hours. The rest of the hours were to sharpen up the image. As a result, I have to halt here since the moon is getting really bright.

Processing Steps:
1. Analyze and stack in ASTAP (20 Flats per session, 20 Darks, 100 Flat Darks)
2. Load into PixInsight
3. DynamicCrop
4. GradientCorrection -> Default till convergence
5. ImageSolver
6. SPCC -> Antlia Triband all three channels, IMX 571 QE, Average Spiral Galaxy
7. BXT Default
8. NXT 0.60 Denoise and Default Detail
9. GHS -> Stretch without adjusting local intensity first time then second time light stretch with local intensity adjustment
10. RangeSelection Galaxy
11. Curves Transformation boost Saturation 2-3x curves lightly

SF Bay Area Imagers
The OSC Club (One Shot Camera)
Skywatcher Esprit ED Super APO Triplet
Astrophotography from home
Mac Users Group
Broadband under Bortle 7/8/9
Duo-band, Tri-band, and Quad-band Imaging

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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
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Professional, scientific grade data
Mix of multiple sources
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.

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	9894236
PixInsight job	QTB3KBG58D3KVC925W4UYOH7B495XBG2
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h36m21s.747
RA (top/left)	12h38m27s.789
RA (top/right)	12h38m44s.922
RA (bottom/right)	12h34m14s.118
RA (bottom/left)	12h34m00s.783

Dec (center)	+25°59′12″.47
Dec (top/left)	+25°12′08″.68
Dec (top/right)	+26°43′56″.68
Dec (bottom/right)	+26°46′09″.83
Dec (bottom/left)	+25°14′25″.30

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Needle Galaxy NGC 4565

Needle Galaxy NGC 4565

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Needle Galaxy NGC 4565

Needle Galaxy NGC 4565

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