Steve, I think the lists you want are available at: ftp://ftp.lowell.edu/pub/bas/seeing.vis and ftp://ftp.lowell.edu/pub/bas/dbls.fil However, in reality, most amateurs use the Pickering scale to judge seeing. In the interests of consistency I use: http://uk.geocities.com/dpeach_78/pickering.htm which shows an animation of the various levels and allows folks to work from the same reference point. Regards Bill Wood -----Original Message----- From: az-observing-bounce@xxxxxxxxxxxxx [mailto:az-observing-bounce@xxxxxxxxxxxxx]On Behalf Of Steve Coe Sent: Tuesday, June 24, 2003 4:52 PM To: az-observing@xxxxxxxxxxxxx Subject: [AZ-Observing] Double stars for seeing test Brian, et al; I think what I need is a little more scientific approach to this discussion of seeing. I have only used a small sampling of stars for seeing tests: Double-double in Lyra, Gamma Leo and one or two others that I can't remember right now. I know that a list was posted some time ago, and I think Brian was nice enough to do that work, it included a list of a dozen or so double stars that pass overhead and have a variety of separations. Seeing as how my new Nexstar 11 will find stuff quickly and accurately, it would be pretty easy to view these doubles at a consistent power (300?) and keep notes on how well divided they are. So, my question is: does someone still have that list in electronic form? I need as a minimum, star designation, RA and Dec, magnitudes and separation. Maybe some info on whether or not the stars are moving rapidly in their orbits. Thanks; Steve Coe -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.