Hi here's my observation from 10/17/2009 : ngc 7538 nebula in Cepheus : mag:? ; size: 9'x6' ; fairly bright nebula, with OIII filter shows better contrast, noticed about 3 stars embedded in the nebulosity. I used a 10mm Radian at 198x with my 14.5 Starstructure f/4.3ngc 7538.jpg