33 Doubles Observing Projects: Otto Struve 35

Otto Struve 35

Carol Lakomiak				strgzr52@hotmail.com
Star: Otto Struve 35 Date & Time: July 8-9 2003 Seeing: 6 [see http://www.backyard-astro.com/Logs/logsreport.html Transparency: 3/10 Location of site: 45°N // Tomahawk WI, USA Site classification: Rural Temperature: 65°F dropping to 50°F Sky darkness: 4/10 (Thompson Scale) Conditions: surprisingly minimal dew; slight breeze from the North Telescope: Meade 8" f/10 LX-10 (Snoopy ) Eyepieces: 32mm, 13.8mm, 9mm, 5mm Magnification: 63x, 147x, 226x, 406x				Visible split at 63x, star 'A' was light green and star 'B' was a dim white. 147x showed no change of color. Well, by now it was 2:45am. Arcturus was setting, The Seven Sisters were rising, and Mars [although high] remained a blurry baby peach sporting a white-powdered bottom. Standing to stretch my legs, I scanned the Milky Way and saw a brightness develop East of Aquila. It travelled further east, and I soon realized it was the ISS going to meet the rising Sun. It skimmed through the Great Square of Pegasus, and continued on, brushing right past Electra and Merope before it faded into the horizonal murk.

Luis Argüelles				luis.arguelles@wanadoo.es
Star: Otto Struve 35 Date: 28, July, 2003 , 23:45 -> 2:45 local time Location of Site: Sena de Luna, Spain 42.55N, 05.57W Seeing: 6/7 <1-10 Seeing scale (10 best)> Transparency: 6 -> 5 <1-10 scale (10 best)> Other conditions: No Moon. Temperature:16ºC Altitude: 1,200 mts (3,940 ft) Site classification: Rural Sky darkness: about 5.5 Telescope: Takahashi FS-102 Mount: Vixen GP + Skysensor 2000 Eyepieces: 9mm Nagler, 5mm and 3.8mm Eudiascopics Diagonal: Zeiss prism diagonal Magnifications: 91x, 164x, 215x				Rather easy with the 9mm. Primary is whitish and initially the secondary is not visible, existing two field stars that try to fool me thinking in one of them as a secondary, but after some observing, the true secondary comes and goes but it’s finally visible. Tracing a line between the central point of a line joining the two fields stars, connecting it with the primary and extending it a bit, we would reach the elusive (with this night’s conditions) secondary.