You've definitely got something transiting there, Patrick! Wow! --- On Sat, 7/4/09, Patrick Wiggins <paw@wirelessbeehive.com> wrote: From: Patrick Wiggins <paw@wirelessbeehive.com> Subject: [Utah-astronomy] Help with followup requested To: "utah astronomy listserve utah astronomy" <utah-astronomy@mailman.xmission.com> Date: Saturday, July 4, 2009, 10:07 PM Hi, A few nights ago I was working HD149026 trying to come up with a light curve of its known exo-planet's transit (something I'd done successfully before). When I reduced the data I had a nice curve but not the one I had been expecting.  In fact I'd erred and used such a long exposure that the target star had saturated the chip so it's data were useless. However, the graph showed that the star I'd used as a check star contained a very nice curve. I've used that same star as a check star before but never had this "problem". So I contacted Bruce Gary at AXA who looked over my data and said that the change in brightness was probably too large to have been made by an exo-planet but that it could have been made by a red dwarf eclipsing binary. He did some checking and said he could not find this EB (if that's what it is) had not been reported before. I've snail-mailed him a DVD with my images for him to examine further but in the mean time he said I should ask others to observe the object in hopes of establishing a period for it. Here is an image of the field in question with HD149026 being marked as "V" and the star that created the curve marked as "2": http://users.wirelessbeehive.com/~paw/temp/MYSTERY01.JPG And here is a screen save of the curve (red is the worthless curve made from the saturated HD149026 and the blue shows the curve created by star "2": http://users.wirelessbeehive.com/~paw/temp/MYSTERY02.JPG HD149026 is located at RA 16:30:30.0, DEC +38:20:42. We've had nothing but bad weather here since the night of the "discovery" so I'd appreciate it if others could occasionally have a go at catching this one in the act. Clear skies! patrick _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com