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Find shift between 2 star lists
| Find shift between 2 star lists [message #73880] |
Mon, 06 December 2010 14:16 |
Noah Johnson
Messages: 2
Registered: December 2010
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Junior Member |
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Hello,
I am new to IDL and I have the following task to complete and I cannot
find an acceptable way to do it.
I have 2 star lists of approximately the same field of stars. One list
has about 100 stars and their locations (RA and DECLINATION) and the
other list has about 10,000 stars and their location. The difference
is that the second list is from observations that are much deeper than
the first list. Both lists have different kind of information and the
only common is the RA and DEC. I am trying to match the stars of the
first list to the stars of the second list. I used match_2d but the
problem is that some of the matches might not be correct. The reason
is that the closest star might not be the same star because the second
list is a much deeper observation so many stars are very close to each
other. I was thinking that I should first find the shift between the 2
lists and but I do not know if there is a way to do that or a program
that can find the shift between 2 star lists of the same region.
I would appreciate any help on this matter.
Noah
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