[vsnet-alert 9968] re nova cyg 2008 (cbet 1291) - IPHAS IDR

[da55 at Safe-mail.net]

Examination of the IPHAS IDR catalogue reveals no candidate progenitor to below a nominal mag of 20 in either r' or i' (could even be as low as 22).

I do not have macromedia flash with which to view, but anyone wishing to examine the actual images of the field can use directions here to view them in their own browser

http://casu.ast.cam.ac.uk/surveys-projects/iphas/data-access


Remember, for preliminary sequences from about mag 9 downwards, CMC14 r' and 2MASS J and Ks can be used via
      V = r'+0.6(J-Ks)-0.03 to within 0.1 mags
although likely photometric sequences may be available before such magnitude ranges become relevant.

The 7.8 mag star just immediately North is apparently associated with nebulosity, whether it is of the ilk to effect photometric solutions, I do not know.

The World release of UKIDSS doesn't appear to cover this field, but should it be a reddened one, the mostly embargoed current 3rd data release which goes down to 19th or so mag in J and K might or might not have something if it does cover it.

Cheers

John

John Greaves