33 Doubles Observing Projects: Struve 191

Struve 191

Carol Lakomiak				strgzr52@hotmail.com
Star: Struve 191 Date & Time: July 12-13, 2003 Seeing: 3 [see http://www.backyard-astro.com/Logs/logsreport.html Transparency: --- Location of site: 45°N // Tomahawk WI, USA Site classification: Rural Temperature: 56°F at 10pm CDT, dropping to 50°F by 3:15am CDT Sky darkness: 10/10 (Thompson Scale) Conditions: Not too much dew; extreme Lunar interference; generally pleasant Telescope: Meade 8" f/10 LX-10 (Snoopy ) Eyepieces: 32mm, 13.8mm, 9mm, 5mm Magnification: 63x, 147x, 226x, 406x				Split detected at 63x, nice black split at 147x. 'A' appears to be white at 63x but a light yellow gold at 226x. I decided to take a peek at Mars at 1:55am. At 147x the southern polar cap was readily seen, and when I kicked the power up to 226x, subtle dark shadings could be seen to its' north. Being at 45°N, Mars never intrigued me too much because it's so low. But I have to admit, it's a lot better without the global dust storm we saw last time around.

Luis Argüelles				luis.arguelles@wanadoo.es
Star: Struve 191 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				Split with the 9mm, I spend some seconds trying to figure out where in the field it is located. The main component is rather bright, but the secondary, with this eyepiece and night’s conditions, it’s rather elusive. Anyway, after some moments of observing, the secondary is detected. Interesting double. With better seeing-transparency I bet I would give it a 3-star rating.