View Full Version here: : Help please to locate the co-ordinates of this image
20-06-2012, 10:00 PM
Hi all, I was trying for the Red Spider nebula, NGC 6537. How can you locate the position of this FOV? It is taken with 14" SCT at F10 and is the full FOV. I know on Flikr there is a astrometry area that can locate where a image is taken with its RA and Dec, but would appreciate how we can do such ourselves.
Just wondering how much I have missed the correct area for this small planetary, or if it is within the FOV. Thanks.
20-06-2012, 11:04 PM
Personally, I use the astrometry facility on astrobin that does the job without knowing the RA/DEC.
21-06-2012, 07:21 AM
Thanks Nick, trying the Flickr astrometry now. If that doesn't work will give astrobin a try. All the best.
21-06-2012, 08:50 AM
Flickr came up with the the co-ordinates centred on this FOV and the R.A was good, but the Dec missed the Red Spider by 23 degrees. I was in a hurry at the time and should have done another bright star alignment. Next time.
For next time, you can use this service:
21-06-2012, 01:36 PM
"live" is not accepting new users. http://nova.astrometry.net doesn't seem to work as well.
For most of the other solvers the focal length and sensor size are needed.
Here's your solution: http://live.astrometry.net/status.php?job=alpha-201206-93905982
Once I had a better value for the RA, Dec and size, UniMap gave this.
I've noticed that too, but I'm not sure why.
Most of the time I use Maxim DL, and yes it needs fl, sensor size and approx RA and DEC in the fits header. When it's setup properly, it's quite fast and very handly, for example (http://deepspaceplace.com/maximdltips.php).
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