M5 (Roland Christen)

Celestial hemisphere: Northern · Constellation: Serpens (Ser) · Contains: M 5 · NGC 5904 · The star 5 Ser

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M5

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M5

This was a test of resolution capability of the 110 GTX scope at F5, and how well the scope can cope with severe light pollution. ZWO camera could not be cooled below +5C because of ice crystals forming on the chip due to high humidity.

Telescope: Astro-Physics 110 GTX with TCC at F5
Imaging Camera: ZWO ASI 6200MM Pro, cooled to +5C
Mount: Astro-Physics Mach2 encoder mount
Filter:   ZWO 50mm Luminance, R, G, B
Software:   MaximDL 6, Adobe Photoshop, Russell Croman NoiseXterminator
Exposure: 50 x 60sec Lum,
                   20 x 60sec R,G,B
Location: Astro-Physics Machesney Park observatory

Sky conditions: High humidity, very hazy with smoke from Canadian wildfires. Severe light pollution from nearby industrial buildings and shopping malls.
Seeing conditions: skies were very steady with good seeing. Star sizes between 1.6" and 1.7" FWHM
Notes: Corner vignetting caused by ZWO 50mm mounted filters being undersized for this size chip.
Colors re-aligned and background gradients removed with MaximDL Auto-Flatten
Increased color saturation by 40%

Original
Final
C

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
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Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Star trails
Northern lights
Noctilucent clouds
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Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
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Traveller
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Amateur hosting facility
Public amaeteur data
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 failed
Started	...
Astrometry.net job	7961109
PixInsight job	TITO3957G8EZ8JKH0BM9APHMUYVHK84Y
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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