Struve 1090 in Gemini

Stuart Anderson
Star: Struve 1090 in Gemini
Date & Time: UT 11th Jan 2001 18:35
Seeing: 4 <1-10 Seeing Scale (10 best)>. 
Location of site: Hamburg, Germany 
Lat/Long: 53 34 N, 9 59 E 
Site classification: Suburban sky 
Sky darkness: -- <Limiting magnitude> 
Binoculars: Vixen Ultima 9x63 + tripod 
FOV: 5d 
This was a good test of local seeing conditions and my ability to star hop. Once found, this is a very nice pair indeed, close but definitely distinct items. Found by star hopping from delta Gem -> 56 Gem (very strong red colour, unmissable) -> 61 Gem -> target. The bright (mag. 3.6) lambda Gem was in the same FOV and confirmed I had found Struve 1090.
The brighter component lay to the west, while its dimmer companion required averted vision to see. The relatively small separation (61" according to 33 doubles) makes it challenging in my instrument and in this location, but by no means impossible. The yellowish Moon was now climbing, so this was a very satisfying find. No colour visible in either star. Another nice pair from the Binocular Doubles series.
Est. PA about 90 degrees.



Paolo Morini
Star: Struve 1090 (Gem)
Date & Time: Jan 10, 2006, 21:15 UTC 
Seeing: --
Location of site: home, Ravenna, Italy
Site classification: Urban backyard 
Sky darkness: 3.5 <Limiting magnitude> 
Conditions:Moon brightness
Temperature: 2° C
Binocular: Miyauchi 30x77

Moon between 1sr quarter and full, clearly split, both components easy visible