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
|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
red colour, unmissable) -> 61 Gem -> target. The bright (mag.
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.
Date & Time: Jan 10, 2006, 21:15 UTC
Location of site: home, Ravenna, Italy
Site classification: Urban backyard
Sky darkness: 3.5 <Limiting magnitude>
Temperature: 2° C
Binocular: Miyauchi 30x77
Moon between 1sr quarter and full, clearly split, both components easy visible