Blinking Nebula (NGC6826 aka Caldwell 15) (DoubleStarPhotography)

Blinking Nebula (NGC6826 aka Caldwell 15)

Revision title: Blinking Nebula (NGC6826) Center Crop

NGC 6826 (also known as Caldwell 15) is a planetary nebula located in the constellation Cygnus. A distinctive feature of this nebula are the two bright patches on either side, which are known as Fast Low-Ionization Emissions Regions, or FLIERS. They appear to be relatively young, moving outwards at supersonic speeds.It is commonly referred to as the "blinking planetary", although many other nebulae exhibit such "blinking". When viewed through a small telescope, the brightness of the central star overwhelms the eye when viewed directly, obscuring the surrounding nebula. However, it can be viewed well using averted vision, which causes it to "blink" in and out of view as the observer's eye wanders. (Wikipedia)

NGC 6826 is, at magnitude 8.8, just as bright as the famous neighboring planetary nebula M57, but it's quite small at just 0.4' across. This makes it appear as a stellar object at small magnifications, which can easily lead to it being mistaken for one of the stars in its immediate vicinity.

This image was taken during the latest episode of Canadian smoke filled skies here in Maryland. (Milky skies even though technically clear) Considering I could only visually see 4 stars in total this night with the naked eye I'd say this image turned out pretty well all things considering, though I did have weird issues with guiding during this run that I believe were related to the smoky skies that resulted in egg-shaped stars.

I'll definitely revisit and redo this object under better condition in the future. This summer has been horrible for decent nights, with clouds, moonlight and now Canadian wildfire smoke all taking turns to hinder nights available to image so far! :-(

Original
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Title: Blinking Nebula (NGC6826) Center Crop

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Title: Blinking Nebula (NGC6826) Center Crop of the Center Crop

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Status	Advanced success
Started	...
Astrometry.net job	7961925
PixInsight job	0KEH9C8HU85FTT1PK9C3YEL0R7A4SZPB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h44m49s.500
RA (top/left)	19h45m53s.709
RA (top/right)	19h45m49s.263
RA (bottom/right)	19h43m43s.963
RA (bottom/left)	19h43m49s.265

Dec (center)	+50°31′17″.71
Dec (top/left)	+50°21′44″.44
Dec (top/right)	+50°41′35″.90
Dec (bottom/right)	+50°40′48″.58
Dec (bottom/left)	+50°20′58″.55

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