Taichi Kato wrote in vsnet-id-2mass 19 > > Another red 2MASS star > > Very bright compared to GSC. Possible variable? No IRAS ID. > > 2MASS: > > 2MASS 024042.012 +591436.28 (2000.0) 8.134 7.031 6.659 > > GSC: > > GSC3712.317 024042.00 +591437.1 (2000.0) 12.47 1 > An example of how the USNO Flagstaff Station Finder Chart Service at http://vsnet.nofs.navy.mil/data/FchPix/cfra.html can be used to test 2MASS, and other, candidates for variability, will be shown for the object GSC 3712 00317, which Taichi Kato suspected of being variable from 2MASS & GSC data [above], and which the USNOFS server plates shows to be in fact variable. The vsnet-image posting will bear the subject heading : GSC 3712 00317 : a 2MASS selected red variable and will have a link at the following URL for those not subscribed : http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-image/maillist.html Cheers John