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Best Way to ID and Label Objects in Images

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#1 Bob Gillette

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Posted 04 April 2020 - 03:25 PM

Hi All,

 

Looking to tap the profound expertise in this forum for the best way to ID and label the Messiers, NGCs, ICs, UGCs, other faint fuzzies, QSOs, and all the other objects that crop up in one's images -- drawing, preferably, on the Simbad data base at the University of Strasbourg.

 

Is there commercial software or free apps that will let me run an image through, draw on Simbad and give me the option of labeling the kinds of objects I'm interested in?

 

Yes, I know  Astrometry.net identifies some objects -- but by no means all, and with no option to choose which ones I'm interested in.

 

Please: Have at it.

 

CS, Bob



#2 jerahian

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Posted 04 April 2020 - 03:40 PM

I use PixInsight to do annotations.  You can select the most common databases to draw from, as well as create a custom one of your own.  Here are some examples:

 

https://www.astrobin.com/5vj5hs/B/

https://www.astrobin.com/nrgre7/B/

https://www.astrobin.com/qx3dqz/B/ - for this one I used a custom catalog of mine to label the Wolf-Rayet star

 

- Ara



#3 Pauls72

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Posted 04 April 2020 - 03:54 PM

Upload your image to Astrometry and let it plate solve and annotate it.

http://nova.astrometry.net/



#4 catalogman

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Posted 04 April 2020 - 03:58 PM

If your image is a solved .fits, any planetarium program that reads .fits
will set labels from the catalogues that you have turned on.

 

--catalogman



#5 Bob Gillette

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Posted 05 April 2020 - 09:52 AM

Thanks, guys.  I know about Astrometry, but, as noted, it has its limits.  Afraid I've not yet tackled the formidable PI.

 

I've used TheSky6 for years, but it's not obvious how to persuade it to identify and label objects in .fits images.  Any pointers?

 

CS, Bob



#6 Ptarmigan

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Posted 05 April 2020 - 11:10 AM

I use ASTAP.

http://www.hnsky.org/astap.htm

 

It can identify PGC, UGC, SDSS, 2MASS, etc.


Edited by Ptarmigan, 05 April 2020 - 11:11 AM.

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#7 bobzeq25

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Posted 05 April 2020 - 11:42 AM

I think the "best" is PixInsight.  Not unusual.  <smile>



#8 Dan Crowson

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Posted 05 April 2020 - 01:12 PM

PixInsight (if you have it) makes it fairly trivial if you just google for a tutorial.
 
If you want to do it manually, astrometry.net and aladin sky atlas works well. After solving with astrometry.net, grab the new-image.fits on the right side. You can then drag this into aladin to solve. I know of no way to have aladin annotate the actual image.
 
I have an old tutorial I made here - https://www.crowson....sing Aladin.pdf.

Dan



#9 Bob Gillette

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Posted 06 April 2020 - 08:40 AM

Thanks very much for this further advice!

 

Bob




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