--- Q1991/100 --- Judging from some Schmidt-Scans (many thanks to the USNO-pixel-server) the variable star Q1991/100 = GSC2390-1540 is a 9"-pair of a bluish and a red star. I have prepared a color picture (B=blue, G=red, R=IR): http://members.aol.com/bela1996/gsc2390-1540.jpg The red star is the IRAS-Source. In B the blue star is much brighter. In R the stars are of equal brightness. In I the red star is very much brighter. Greetings Bela Hassforther