An unusual bright nebula in Cygnus or is it a planetary? (astroeyes)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: NGC 6857

An unusual bright nebula in Cygnus or is it a planetary?, astroeyes

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An unusual bright nebula in Cygnus or is it a planetary?

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An unusual bright nebula in Cygnus or is it a planetary?

I was out a few nights ago, looking up some of my favourite planetaries before they disappear for the winter. I was looking for some faint objects that I hadn't seen before and indeed I found a couple of very interesting objects. For instance, not far from the ring planetary ngc 6894 lies the most unusual object ngc 6857. I had found this object commonly referenced to as a planetary and indeed it does look very much like a typical red planetary to me. It has a very distinctive box-like shape and is 'planetary' size.

However, after I'd got an image of it, I did a bit more research and found that, in fact, there's not much around on ngc 6857. Most references to it suggest it may be a bright nebula but it doesn't look like a bright nebula to me. Located in Cyg. it shows an apparent size of about 40" x 40" and shines at about magnitude 11.4 with a brightest star of around 14.5. Distance unknown, the object is very bright in the eyepiece and is situated in a very rich, beautiful star field. My image, taken as usual with my Orion Optics 10" reflector and SX H9C camera, consists of 60 x 120 second PHD guided exposures added and processed mainly in AstroArt 3.

Due to the relative lack of info I've been able to find, I'd be interested to hear other's views on this object and also whether anyone has imaged it with narrow band filters which would make an interesting comparison to my image. It's well worth a look at anyway as it's in such a gorgeous area of the sky which is fast disappearing into the sunset.

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An unusual bright nebula in Cygnus or is it a planetary?

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