Draco Dwarf Galaxy (Jerry Yesavage)

Celestial hemisphere: Northern · Constellation: Draco (Dra) · Contains: HD238677

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Draco Dwarf Galaxy

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Draco Dwarf Galaxy

Well a remarkable opportunity to be able to see this from a dark site. I am just learning some of the challenges of processing such clean data and realize it is unforgiving, so working on basics first, like getting the stars right.

My gold standard for the quality of image is ultimately their star counts, in this case on the L image. Starting with a total of 72 my iteration of subframe selection finds 22 top quality images. The star count on those images is 2544 whereas when all images are used the count is 2465. My next question is if the 1X drizzling as implemented in WBPP helps, the answer is that on the 22 frames the star count goes to 2718. [I routinely get 10% gain here].

Summary:

Star Count: method

2465: All 72 subframes collected "Original Image"

2544: Selected best 22 subframes "Image C"

2718: Selected best 22 subframes drizzled 1X in WBPP "Final Image D"

These were used to add luminosity to the same RGB data.

I also tweaked the C&D images with Topaz and 3DLUT for cleaning and color.

Original
C
Final
D

Cloudy Nights

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Distribution of astrophotographers

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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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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.
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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	9893230
PixInsight job	SNFRJPAVOT3P9ZQK6ZOXFUULEQIOBE8O
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	17h20m14s.120
RA (top/left)	17h22m12s.923
RA (top/right)	17h18m15s.672
RA (bottom/right)	17h18m16s.587
RA (bottom/left)	17h22m11s.497

Dec (center)	+57°55′17″.68
Dec (top/left)	+58°05′39″.67
Dec (top/right)	+58°05′42″.45
Dec (bottom/right)	+57°44′47″.60
Dec (bottom/left)	+57°44′45″.70

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Draco Dwarf Galaxy

Draco Dwarf Galaxy

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Draco Dwarf Galaxy

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