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Finding Y Canum Venatacorum with SkyCommander

Started by auriga, 04/26/2006 03:10AM
Posted 04/26/2006 03:10AM Opening Post
Hi, everyone,
I have SC the 2003 edition, which I like. I use it on an SM Dob in the Dob mode, without tracking, and I can find DSO's in the catalog easily. And I can find any of the 41 or so stars that are listed in order to initialize the SC. Similarly I can find double and multiple stars since SC gives a separate catalog for them.
However, I cannot easily find a non-double star, let's say Y Canum Venatacorum, since there is no catalog for individual stars. Y Canum is a carbon star and there are about 30 or so of these I want to find. I have to use SC since I am observing from my driveway in the city and can't see enough stars to starhop.
Any advice would be appreciated.
Thanks,
Bill Meyers
Posted 04/26/2006 03:47AM #1
Bill: I don't know what SC (SkyCommander?) is, but if it is a kind of digital setting circle or a "go to" device, maybe the following will help:
First, if you want a list of carbon stars with their Epoch 2000 celestial coordinates, try http://www.belmontnc.4dw.net/carbonstar.htm
Second, if SC is a device that can direct your scope to individual stars in the SAO catalog, you might use the resource I use. It's at http://cdsweb.u-strasbg.fr/cgi-bin/VizieR-2?-source=I/131A
Using that site to obtain the SAO catalog numbers of stars whose coordinates you know (whether epoch 2000 or 1950) takes a little study and practice, but it works very well for me now. Incidentally, if you like I can privately email to you the SAO numbers of Y CVn and a number of other carbon stars that may be on you agenda. Regards, Herbert Kraus

NexStar 8i SCT, Orion 80ED APO refractor, Orion 120 mm EQ refractor, 3.5-inch Questar
Posted 04/26/2006 07:59PM #2
Bill: After sending you my previous post in response to your inquiry, I looked up SkyCommander in the Internet and learned that it is indeed a DSC, but the catalogs in its database do not include any part of the SAO or other catalog of individual stars. However, there is an "S" list in which you can program the coordinates of up to 59 objects of your own selection. To use this DSC for the carbon stars you're interested in, I would suggest you program their coordinates on this "S" list; those coordinates can be obtained from various sources, including the Belmont Society website I mentioned yesterday. Good luck. Herbert Kraus.

NexStar 8i SCT, Orion 80ED APO refractor, Orion 120 mm EQ refractor, 3.5-inch Questar