Tom, your clarifying point is not only understood but well taken. The reason for inquiring about the Zane Greay observing site, named after the prolific authour of western novels, was prompted due to some confusion. In the meantime I did look up the site in the Arizona Atlas and Gazetteer - far less accurate than the topo maps in your reference but with enough accuracy to help calibrate by thoughts. This sites coordiantes are just off the General Crook Highway. Trouble is it isn't clear where Zane Grey is located in this area and that's the confusion. Me thinks it is located much farther away, perhaps 30 miles or so, from this site. More to the point many of us in the Saguaro Astronomy Club named the site Gen'l Crook - a more appropriate geographical title. As a result my original question for Wil Milan is now refined as to where the name for this site originated and to have it renamed more appropriately. As an interesting side bar, this site even had an different name - Camp Andromeda! It was given this name back in the latter 1970's by an astrophotographer who got his best and greatest picture of The Great Andromeda Galaxy! I'd have to check on the film and duration but I'm pretty sure it was black and white, about 45 minutes of manual guiding. They really had it tough back in those days!! aj saguaroastro.org Tom Harvey wrote: > > AJ, > GPS coordinates is somewhat of a misnomer, as these coordinate systems > existed long before GPS was established. A better term is geographic > coordinates. The advent of GPS allowed people to quickly and easily > determine their coordinates, and so the use of the coordinate framework > has become more widespread and some people now call them GPS > coordinates. Some maps will show geographic coordinates on them. An > example of commonly available maps are the USGS topographic maps and > DeLorme's Atlas and Gazetteer series of state atlases. One for Arizona > is available and cost $14.95 about 6 years ago when I bought mine. > Thus, the site coordinates could be useful to people without a GPS if > they had the proper maps and did some interpolation to plot the > positions on the map. Even with a GPS it's good to have a map to figure > out what roads to take to get to the spot. > > Tom > --- 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.