26 April 2020

The forecast for last night was for clear in the early evening and then poor transparency later on, and that forecast held true. Seeing was not so great, 5-6/10, better high up. The moon was low in the west when I came out at 9pm, and clear. But by 10pm it cast its glow over a haze, and then I saw bands of high clouds coming overhead. So I had to wrap up at 10:30pm. All the same there were some good pairs. I started in eastern Lynx and then moved to Leo Minor which was in pretty good position.

ES 1541 AB: 508; 333x: White and dull white pair, ~1 delta mag, wide ~8"
09h 22m 05.95s +39° 58' 00.7" P.A. 23 sep 8.2 mag 10.41,11.20

TDS6583 AB: 508; 533x: Just split with seeing, very tight, noticeable mag difference ~0.5-1, orange stars
09h 28m 23.15s +39° 54' 56.7" P.A. 71 sep 0.5 mag 10.78,10.94

STF 1374 AB: 508; 333x: Pretty orange-yellow stars, ~2 delta mag, ~3 separation
09h 41m 21.88s +38° 57' 01.9" P.A. 311.5 sep 2.81 mag 7.28,8.65 Sp G3IV dist. 51.28 pc (167.28 l.y.)

HO 369 AB: 508; 1067x: With 533x I can tell this is not single, but the elongation is too tentative. At 1067x the best I can manage is elongated notched, with seeing. Seeing and transparency are not good enough.
09h 51m 09.34s +36° 29' 20.8" P.A. 106.3 sep 0.41 mag 8.02,9.85 Sp F2 dist. 121.21 pc (395.39 l.y.)

A 2139 AB: 508; 333x: White A and blue B, ~2" separation, >2 delta mag. [not physical]
09h 52m 15.53s +40° 58' 13.4" P.A. 292 sep 2 mag 8.01,10.68 Sp A3 dist. 95.51 pc (311.55 l.y.)

HJ 2509 AB: 508; 333x: Wide light blue stars, ~1 delta mag.
09h 52m 50.16s +37° 11' 32.0" P.A. 61 sep 15.8 mag 10.89,11.70 Sp G0

HU 631 AB: 508; 533x: Bright orange-yellow A star, B is a very small, faint blue point, ~1" separation, very much fainter ~3 delta mag.
10h 03m 59.08s +32° 38' 48.8" P.A. 258 sep 0.8 mag 8.00,9.34 Sp F8 dist. 76.45 pc (249.38 l.y.)

HU 877 AB: 508; 333x: Very fine white pair, ~2 delta mag, ~2" separation, very nice.
10h 25m 32.60s +36° 46' 59.0" P.A. 250 sep 1.7 mag 9.14,10.47 Sp G0 dist. 224.22 pc (731.41 l.y.)

HU 880 AB: 508; 333x: ! Exceptionally fine split, white stars.
10h 31m 14.44s +37° 07' 27.4" P.A. 144 sep 0.9 mag 10.10,10.43 Sp F8

STF 1443 AB: 508; 333x: Wide pair, white, ~1 delta
10h 33m 17.07s +37° 40' 25.0" P.A. 161 sep 5.3 mag 9.87,10.00 Sp G0 dist. 99.8 pc (325.55 l.y.)

STF 1459 AB: 508; 333x: Wide light yellow-orange stars, ~2 delta.
10h 40m 12.46s +38° 24' 11.4" P.A. 153 sep 4.6 mag 8.34,8.85 Sp K4III dist. 2325.58 pc (7586.04 l.y.)