Jack Jones has prompted me to respond to JTPests's query about the status of NGC 1788. A look in SIMBAD shows that the brightest and also earliest-type (i.e. hottest) stars involved have spectral types of B9V. This means they are not hot enough to fluoresce the gas in the cloud, and thus you have a reflection nebula. Some of the stars have emmsion-line shells around them, but that's different deal than for the nebula itself. Somebody like Chris Schur could provide a colorful demonstration of this by getting some color images. These will show (a prediction here) that the nebula is bluish, whereas you'd expect an emission object to be shocking red. Chris? Wil? \Brian --- This message is from the AZ-Observing mailing list. If you wish to be removed from this list, send E-mail to: AZ-Observing-request@xxxxxxxxxxxxx, with the subject: unsubscribe. The list's archive is at: //www.freelists.org/archives/az-observing This is a discussion list. Please send personal inquiries directly to the message author. In other words, do not use "reply" for personal messages. Thanks.