Abell 39

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: PK047+42.1

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Abell 39

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Abell 39

I have finally taken an object that does not appear as listed in the catalogues on my mount's handset... indeed an object that is not that easy to image, due to its relative faintness. Because I cannot plate solve, the only way I could find this pn was to look at someone else's picture, then look at the bright stars in it, and then having put in the coordinates on the handset, let the scope move to that position, and then try to align my stars to what the picture presented. I started with the RGBs, and at 60s per sub there literally was no sign at all of Abell 39, but I felt confident that I was in the correct area, and pretty certain it was where I thought it was. I took 42 subs in RGB for the colour, and then later, just as my exhaustion was taking hold, I slotted in the OIII filter and took 61 four minute subs. I can honestly say that when the first OIII sub came up, I was so pleased to see the object right where I thought it probably would be. Capturing it was thus not easy, but processing the data was actually easier than I thought! Swings and roundabouts... I think this is such a beautiful object, and I love its sphericity and colour. I am really pleased to have got this. The imaging time was thus 4 hours and 46 minutes. Have a good night everyone, thanks for looking.

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	Distinct awarded users	Total awarded images
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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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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
Backyard
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.
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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	5757228
PixInsight job	WQFG4BXZKD1RMCZT1N3UDU3ZO6WKXL2U
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h27m03s.84
RA (top/left)	16h28m43s.26
RA (top/right)	16h28m48s.38
RA (bottom/right)	16h25m23s.39
RA (bottom/left)	16h25m20s.40

Dec (center)	+27°56′39″.9
Dec (top/left)	+27°22′26″.8
Dec (top/right)	+28°30′11″.6
Dec (bottom/right)	+28°30′48″.0
Dec (bottom/left)	+27°23′04″.2

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Abell 39

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Abell 39

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