23 january 2022

This was a pretty decent night, so I used the 20-inch throughout.  I have been trying over the last several nights, whenever it was clear, to split Joy 1, which is Mira's white dwarf companion.  Or, more correctly, the glow from the white dwarf's accretion disk of Mira's material it is absorbing.  This can only be seen when Mira is at minima, which it is now, however the target is getting tough to see since it is narrowing separation of 0.45" currently, and it is itself variable of indeterminate period and range.  I could not get any resolution because Mira is low in the sky and the seeing was always too poor.  I'll keep trying, but it may have to wait until the end of this year when Mira is at minima again.

EDG 2 AB: 508; 205x: Bright white star with two fairly bright stars close by (AB and AC).  Did not try for Aa,Ab, 5.51/8.68 0.4". 
05h 08m 06.62s +24° 15' 54.6" P.A. 154.00 sep 17.9 mag 5.51,11.00 Sp B2V dist. 458.72 pc (1496.34 l.y.)

A 2427 AB: 508; 205x: Light orange A, much fainter B well separated.
4h 59m 25.67s +20° 11' 38.6" P.A. 264.00 sep 4.0 mag 8.49,11.98 Sp K0 dist. 336.7 pc (1098.32 l.y.)

COU 709 AB: 508; 553x: Very fine, nice split, light yellow A and one delta blue B
04h 58m 21.47s +18° 59' 36.2" P.A. 242.00 sep 0.5 mag 9.69,11.52 Sp F2 dist. 147.93 pc (482.55 l.y.)

COU 568 AB: 508; 205x: Just split, near equal white stars, faint
04h 59m 32.61s +25° 15' 34.9" P.A. 159.00 sep 0.8 mag 11.80,11.80 Sp G0

BU 1238 AB: 508; 205x: B just seen as a point outside of much brighter very light yellow A's glare.
05h 01m 18.91s +26° 32' 03.5" P.A. 16.00 sep 1.6 mag 7.56,10.52 Sp B2IV dist. 171.53 pc (559.53 l.y.)

HU 445 AB: 508; 667x: Fine hairline split, noticeable magnitude difference, <1 delta, light yellow stars.  Physical with an 83.24-year period, it will make a little less than a quarter turn by 2040.
05h 01m 44.19s +20° 49' 47.6" P.A. 171.70 sep 0.3 mag 9.32,8.45 Sp G0 dist. 38.21 pc (124.64 l.y.)

COU 759 AB: 508; 205: Very nice near equal white stars, split, one of three stars in wide equal triangle
05h 02m 53.63s +28° 02' 22.7" P.A. 258.00 sep 1.4 mag 9.97,10.33 Sp G5

A 1845 AB: 508; 205x: Near equal white stars, well separated.
05h 05m 15.46s +27° 39' 35.9" P.A. 140.00 sep 2.0 mag 10.39,10.41 Sp G0

STT 97 AB: 508; 667x: With best seeing only, white stars, snowman of very much fainter B to the south.
05h 05m 37.72s +23° 03' 39.8" P.A. 149.00 sep 0.4 mag 6.97,8.45 Sp B5I dist. 320.51 pc (1045.5 l.y.)

STT 95 AB: 508; 205x: Bright white stars, near equal, just hairline split.  760-year period.
05h 05m 32.08s +19° 48' 24.4" P.A. 295.20 sep 1.0 mag 7.02,7.56 Sp A5m dist. 137.74 pc (449.31 l.y.)

COU 155 AB: 508; 1334x: Best impression at maximum magnification is a slightly NNW PA elongation.  
05h 07m 09.95s +22° 23' 37.0" P.A. 331.00 sep 0.2 mag 8.60,8.70 Sp F5

HU 446 AB: 508; 205x: Wow! superfine equal white stars, just split
05h 07m 22.87s +22° 42' 42.6" P.A. 190.00 sep 0.9 mag 10.19,10.35 Sp A0

STF 694 AB: 508; 205x: Nice white stars, good split, slight magnitude difference
05h 24m 01.17s +24° 57' 37.8" P.A. 13.00 sep 1.3 mag 8.65,8.54 Sp A2 dist. 114.16 pc (372.39 l.y.)

HO 226 AB: 508; 205x: White, just split, one delta.  374-year period
05h 27m 01.32s +27° 36' 36.9" P.A. 274.30 sep 0.6 mag 8.71,8.61 Sp F8 dist. 167.79 pc (547.33 l.y.)

COU 268 AB: 508; 445x: Suspected at 205x, clean split with 445x, near equal, very nice

05h 31m 54.80s +21° 40' 53.4" P.A. 165.00 sep 0.7 mag 10.11,10.24 Sp G0

STF 779 AB: 508; 205x: Bright white and much fainter B, wide

05h 44m 21.16s +27° 43' 53.3" P.A. 254.00 sep 8.6 mag 7.50,9.78 Sp A0 dist. 271.74 pc (886.42 l.y.)

 

HU 450 AB: 508; 445x: Very fine, good split, significant magnitude difference
06h 06m 01.80s +23° 30' 51.5" P.A. 246.00 sep 0.4 mag 8.80,10.30 Sp B9

BU 1241 AB: 508; 1067x: Out of round at highest powers but no notch, it is weaker to north
06h 09m 43.99s +23° 06' 48.5" P.A. 347.00 sep 0.6 mag 5.90,8.48 Sp B2.5Ibe dist. 4347.83 pc (14182.62 l.y.)

COU 273 AB: 508; 445x: Very fine, need foveal coaxing before I can hold it direct, with seeing, significant magnitude difference.

06h 12m 41.09s +21° 58' 44.3" P.A. 140.00 sep 1.3 mag 9.49,10.95 Sp G0