Is this a distant r...
 
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Is this a distant ringed planetary nebula or an imaging artifact?  

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(@uihawks)
White Dwarf Customer
Joined: 11 months ago
Posts: 10
April 3, 2021 03:08  

Hello everyone.  I am imaging and processing Messier objects in APP from various sources including remote images I pay for.  I search the Hubble Legacy Archive for suitable or interesting images to process.  I would like your observation and opinion to answer my question in the topic title.

The image below is a standard wide field image of M36 to start the zoomed in path I will take.

M36 LRGB stargazerlounge jpeg

The next image below is a Hubble image I downloaded of a much smaller portion of M36 taken in three wavelengths.  There were a few hot pixels I wanted to clean up in certain areas one of which is the brightest star in the lower right of the image.

M36 Hubble App closeup final

When I zoomed in to bit edit a few pixels I was surprised at what I initially thought was a distant, dim star just above the bright star that now looked like a ringed planetary nebula (see the image below).  Many of you are much more expert at astrophotography processing than I so the question is is this a distant, faint nebula or an imaging artifact?  Thanks in advance for any replies.  Paul

M36 Hubble App closeup surprise
This topic was modified 8 months ago 2 times by PAUL CALIGIURI

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 ah
(@ah_astro)
White Dwarf Customer
Joined: 2 years ago
Posts: 12
April 3, 2021 14:17  

I would try getting a fit on http://nova.astrometry.net/


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(@uihawks)
White Dwarf Customer
Joined: 11 months ago
Posts: 10
April 3, 2021 20:26  

@ah_astro Thanks for that info as I didn't know that site existed.  I did not get a match on that site.

But I thought the Hubble Legacy Site should have the coordinates.  I looked at the description of the image on the Hubble site and I did see the RA and Dec within a few minutes of the given coordinates of Messier 36.  Now all I need is a way to look at those coordinates like on the Sloan Sky Survey or some such site.

Now I will ask if anyone knows of an all sky site where I can plug in my coordinates and retrieve information of the objects in that area of the sky?  Thanks in advance.


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