Struve 1831 in Ursa Majoris
Date & Time: 1843 UTC, 15.Feb.2001
Seeing: 5 <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
|STF 1831 consists of TYC 3862-1470-1 and
TYC 3862-1471-1. I located this bino double by star haopping from Iota
Boo, which I tried unsuccessfully to split.
Pretty faint: UMa is quite low in the sky and some haze is approaching. Averted vision helps, but this pair is not too difficult. The southernmost component is noticeably brighter. No colour discernible in either component.
Estimated PA about 300 degrees (seems close to N-S with brighter component S). Discrepancy here with 33 double list? I think I don't understand position angles correctly.......must check how this works.
Note: after some research from Tom Teague, he confirmed that Anderson's observation is right, and there was a mistake on the listing. It showed a PA of 222º. Now we need a measure of this easy pair