Benson, AZ 85602 hm ph: 520-586-2244 Those observations sound great, Dick. I wondered how good the seeing was in the Cave Creek area since you have the high hills around you. I held off on my reply a little so that I could possibly track down which ones you may have observed. I had about 20 double star observations in Ophiuchus and Serpens over a few nights and seeing varied a bit night to night and even hour to hour. I only give the ones in Ophiuchus and only the closest. It's a fun challenge to split the very closest double stars and it's interesting to see how discordant the magnitudes and separations are in the three sources I used. I used my undriven 13-in reflector, a real challenge with high magnification. Others should try observing with about 6 inch telescopes, stable seeing is probably the most important requirement. You don't even need dark skies! The position angle (pa) could only be estimated with respect to (wrt) east-west as the given double star drifted through the field of view. The numbers I give are very gross and colors subjective, but I had success in 4 out of 5 cases: 24 Oph - ~0.8 arcsec separation, colors: wht/wht, ~equal magn, pa ~ 15deg N of drift (E/W), 180x and 360x35 Oph - ~0.6 arc sec sep, colors: wht/wht, ~equal magn, pa ~ 15deg S of drift (E/W), 360xStruve 2173 - ~0.8 arcsec separation, colors: wht/wht, ~equal magn, pa ~ 90deg wrt drift (E/W), 180x and 360x69 Oph - ~1.5 arcsec separation, colors: orangish/orangish, ~0.5 delta magn, pa ~ 45deg wrt drift (E/W), 180x and 360x3 Oph - could not separate - I understand it's a short period binary and it may be at minimum now, same may be true for another double that frustrated me, beta Delphini. Both stars are bright, but now they seem to be too close (at least for me) to separate. Anybody have better success on these two stars? Clear skies, Wayne (aka Mr. Galaxy) ---------- Original Message ---------- From: "Richard Harshaw" <rharshaw2@xxxxxxx> To: <az-observing@xxxxxxxxxxxxx> Subject: [AZ-Observing] Re: naked eye Milky Way Date: Mon, 28 May 2012 14:39:30 -0700 Wayne, I had a great night a couple of nights ago here in Cave Creek, using my 6-inch refractor on some tight doubles in Ophiuchus. I split one pair 0.80" using 240x (got a nice figure 8!). Last month I even managed a 0.7" pair at 500x. Not bad for a little 6-incher. Richard Harshaw Cave Creek, Arizona Brilliant Sky Observatory -----Original Message----- From: az-observing-bounce@xxxxxxxxxxxxx [mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Wayne (aka Mr. Galaxy) Sent: Monday, May 28, 2012 2:31 PM To: az-observing@xxxxxxxxxxxxx; amastro@xxxxxxxxxxxxxxx Cc: taaaforum@xxxxxxxxxxxxxxx; haclist@xxxxxxxxxxxxxxx Subject: [AZ-Observing] Re: naked eye Milky Way Benson, AZ 85602 hm ph: 520-586-2244 I wondered how the rest of AZ was doing with the strangely bright skies we've been having lately, Steve. Even though the skies have been fairly bright along the horizon, overhead the transparency has been quite good. One of the main reasons that I live in Mescal is because I can step out the back door and see a very nice contrasty Milky Way without having to drive an hour away. If it's good (or even decent) I just roll out one or both of my telescopes, the big one for deepsky and the little one for double stars or planets and the moon. During the nights I look at double stars I merely look at my Sky Atlas 2000, which I use religiously though its poor cover has recently come off, and look for double star symbols and star-hop my scope to those stars. I don't know about the rest of you (many of whom probably use your electronic programs to point your telescope, though I'm sure there are a couple of us dinosaurs still around!) but I am disappointed that many times I cannot resolve the double star that is supposed to be at that location on the chart. I enjoy the sense of discovery so that I typically don't check to see what the characteristics (separation and delta magn) of the chosen double star are. Many times I find that the delta magnitude is the culprit, the secondary being 5-10 magnitudes fainter than the primary and being very close. The seeing has been marginal lately so that I have not been able to split stars much below an arcsecond, much less trying to split these extreme stars. They're good tests, but the seeing has to be very good... Clear skies, Wayne (aka Mr. Galaxy) ---------- Original Message ---------- From: stevecoe@xxxxxxxxxxxxxxxx To: "az-observing@fre" <az-observing@xxxxxxxxxxxxx> Cc: "Bill" <malachite@xxxxxxx> Subject: [AZ-Observing] naked eye Milky Way Date: Mon, 28 May 2012 03:57:14 -0400 Howdy all; I watched some TV tonight and decided to step outside and see what I could from the Happy Jack RV park once the movie was over. It certainly was warmer than last night and the wind has finally slowed down to a light breeze. Once I started to get some dark adaption it was a nice view. There are few lights near where I have the RV parked and so the Milky Way stood out quite well. Obviously, not as good as the SAC observing site at Fredericksen Meadow, but it was very enjoyable. Both Sagittarius and Scorpius are well above the tree line and M 6 and M 7 were easily naked eye. The Rift within the glow of the Milky Way was obvious and had some detail from the Lagoon to Cygnus. I stood outside in pretty thin socks and tennis shoes for all I could take and then needed to get back to the warm confines of the Winnebago. I forced the furnace to kick on for a while and got warmed up enough to post this message. It is very nice to have Milky Way right outside your door. It is one of the nice treats while living in the RV. Clear skies to us all; Steve Coe -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list. -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list. -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list. -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.