30 november 2020

Continuing winter conditions last night: foggy haze in the air and mediocre seeing.  I kept the 8-inch mask on throughout.  From 8-9pm I viewed a variety of doubles, some very interesting, using the Tour mode on the Argo.  No notes, however, just tourist mode.  After 9pm I observed from my lists, some good pairs despite the conditions -- however the proximity of the nearly full moon kept the fainter pairs out of reach.

STF 333 AB: 203; 205x: Eps Ari: Beautiful split of white stars, less than 1 delta mag, a little more than 1".  Very nice pair.  Physical with a 1215 year period. 

02H 59M 12.73S +21° 20' 25.6" P.A. 210 SEP 1.32 MAG 5.17,5.57 SP A2VS+A2VS DIST. 101.94 PC (332.53 L.Y.)

STT 49 AB: 203; 205x: 50 Ari.  Very fine pair, white A and dull B, ~3 delta mag, ~2", very pretty.   Physical, it has widened from 1.2" since discovery in 1865.

03H 00M 31.51S +18° 00' 18.1" P.A. 50 SEP 2.3 MAG 6.80,9.92 SP A0 DIST. 122.4 PC (399.27 L.Y.)

STF 346 AB: 203; 333x: What a great set!  The closest are a near equal pair of white stars, elongated with a slight notch, There's a faint C ~5" and slight more than a right angle in PA.  Interesting set.  Physical with 227 year period.

03H 05M 26.69S +25° 15' 18.7" P.A. 258.6 SEP 0.51 MAG 6.21,6.19 SP B7V DIST. 165.29 PC (539.18 L.Y.)

AG 61 AB: 203; 333x: Minute pair, split at best moments, light orange stars, noticeable mag difference.
03H 06M 52.47S +20° 51' 43.1" P.A. 23 SEP 0.8 MAG 9.21,9.43 SP G0 DIST. 374.53 PC (1221.72 L.Y.)

BU 1030 AB: 203; 333x: Good clean split, slight magnitude difference, small pair.  Really good.  Physical with 571 year period.  

03H 10M 06.57S +21° 44' 49.5" P.A. 100.6 SEP 0.8 MAG 7.81,9.67 SP F0 DIST. 118.06 PC (385.11 L.Y.)

GLP 1 AB: 203; 205x: Faint but easy pair of white stars, near equal, well split.  Physical.  S. Glasenapp, active in France during the 1890s.
03H 10M 48.97S +15° 08' 07.5" P.A. 89 SEP 4.5 MAG 10.42,10.65 SP F8

BU 530 BC: 203; 333x: Component of STF 366.  Faint, and is mostly a hazy elongation which brightens each end with seeing --- difficult on such a night as this with poor seeing and transparency.  It makes me wonder how Struve missed it?  There are 26 observations in WDS so it should have been determined to be physical by now... 

03H 14M 18.93S +22° 57' 48.0" P.A. 191 SEP 1.9 MAG 10.43,11.10 DIST. 146.2 PC (476.9 L.Y.)

STF 376 AB: 203; 205x: Easy wide pair, white stars
03H 20M 20.64S +19° 43' 49.3" P.A. 252 SEP 7.2 MAG 8.33,8.44 SP A2V DIST. 123.15 PC (401.72 L.Y.)

STF 375 AB: 203; 333x: Easy wide pair, ~3", ~2 delta, white and bluish
03H 20M 21.23S +23° 41' 21.9" P.A. 316 SEP 2.7 MAG 7.62,9.90 SP A7IV DIST. 104.6 PC (341.21 L.Y.)

STF 377 AB: 203; 333x: Faint in poor conditions, ~1 delta mag., ~1" 
03H 20M 34.14S +19° 10' 49.5" P.A. 110 SEP 1.1 MAG 8.78,9.31 SP A2.5V DIST. 194.17 PC (633.38 L.Y.)

STF 379 AB: 203; 205x: Very wide, near equal white stars.  Physical

03H 22M 51.83S +29° 49' 06.3" P.A. 101 SEP 10.4 MAG 8.59,8.80 SP A2 DIST. 205.34 PC (669.82 L.Y.)

STF 381 AB: 203; 205x: Very fine split, white and blue stars, ~1 delta mag, ~1" 
03H 23M 19.33S +20° 58' 13.9" P.A. 109 SEP 1.1 MAG 7.56,8.75 SP G5

STF 271 AB: 203; 205x: Pretty white star and much fainter wide B
02H 30M 32.31S +25° 14' 06.8" P.A. 183 SEP 12.8 MAG 5.93,9.94 SP F6IV DIST. 51.76 PC (168.84 L.Y.)

STF 273 AB: 203; 205x: Prototypical Struve: White, wide, ~1 delta mag. 
02H 32M 02.89S +18° 22' 25.2" SEP 7.2 MAG 8.56,9.12 SP F5 DIST. 110.86 PC (361.63 L.Y.)

HLD 63 AB: 203; 205x: Fine pair, split with seeing, ~1", light orange, slight magnitude difference. 
02H 34M 23.36S +11° 48' 16.9" P.A. 292 SEP 1.5 MAG 9.68,10.01 SP F8

STF 287 AB: 203; 205x: White and wide, ~2 delta mag.  Physical
02H 38M 59.78S +14° 51' 37.6" P.A. 74 SEP 6.8 MAG 7.36,9.61 SP G5 DIST. 271 PC (884 L.Y.)

STF 291 AB: 203; 205x: White stars, near equal, close but well split, makes a 2+1 with a ~2 delta mag, very wide C

02H 41M 06.59S +18° 48' 00.7" P.A. 118 SEP 3.4 MAG 7.66,7.50 SP B9.5V DIST. 735.29 PC (2398.52 L.Y.)

I looked at the moon for a while with bino-viewers, but the seeing and conditions did not really hold up, so I packed it in after 20 minutes or so.