13 october 2019

Last night had very poor conditions: 4/10 seeing and 2/5 transparency, with a just past full moon lighting it up so the whole sky was milky white. My limiting magnitude through the 8" mask was a mere 9th magnitude! But I had nothing better to do except make the most of it. It was cold, but no dew (I heard on the radio the air is 0% humidity!); I observed for an hour and a half. I was a bit tired, since I took delivery of our winter's supply of wood and split and stacked it in the afternoon.

BU 65 AB 8" 533x: = 13 Del. Suspected at 333x, went up to 533x. The B star seems much fainter than SkyTools data; about 3 delta mag, and seen only when seeing is still as a blue point just outside first diffraction. ~1.5"
20h 47m 48.33s +06° 00' 29.5" P.A. 199 sep 1.5 mag 5.64,8.24 Sp A0V dist. 131.41 pc (428.66 l.y.)

HJ 1577 AB: 8" 533x: Can easily see the wide split and seems a bit more than 1 delta mag
20h 49m 54.46s +12° 55' 08.1" P.A. 246 sep 9.4 mag 8.91,9.40 Sp G0

STF 2730 AB 8" 533x: Near equal, fairly wide, white stars ~4"
20h 51m 03.77s +06° 23' 14.1" P.A. 334 sep 3.4 mag 8.43,8.57 Sp K1III

A 613 AB: 8" 533x: Getting the briefest hairline split, but this one is very marginal seeing is a problem
20h 51m 54.49s +05° 44' 29.5" P.A. 316.8 sep 0.6 mag 9.10,9.03 Sp F5

BAL 2548 AB: 8" 533x: Easy to pick out ~8" wide, near equal white stars
20h 53m 40.87s +03° 35' 38.5" P.A. 258 sep 7.5 mag 9.90,10.85 Sp G5

STF 2736 AB 8" 533x: Pretty wide, ~5", 1.5 delta mag, very light orange and blue
20h 56m 43.74s +12° 59' 33.8" P.A. 219 sep 5.3 mag 8.34,9.36 Sp F2 dist. 294.99 pc (962.26 l.y.)

STF 2738 AB: 8" 533x: Easy wide pair, A is yellowish, B white, wide, 1 delta mag. [not physical]
20h 58m 32.23s +16° 26' 12.2" P.A. 254 sep 15 mag 7.51,8.57 Sp F5V+A0 dist. 100.4 pc (327.5 l.y.)

STF 2797 AB 8" 533x: = KP Peg. Light yellow A and ~4", 1.5 delta mag orange B
21h 26m 41.14s +13° 41' 17.8" P.A. 217 sep 3.5 mag 7.37,8.83 Sp A2V dist. 221.73 pc (723.28 l.y.)

STF 2799 AB: 8" 533x: Very nice pair, only slightly unequal, ~3"
21h 28m 52.79s +11° 05' 05.2" P.A. 257.7 sep 1.89 mag 7.37,7.44 Sp F4V dist. 105.04 pc (342.64 l.y.)

BU 74 AB: 8" 533x: Light orange A star with a very, very faint B, barely split, elongated with averted vision. Can split only when seeing settles at the same time I'm flashing averted vision.
21h 35m 11.99s +21° 24' 14.9" P.A. 338 sep 1 mag 7.45,9.05 Sp F5V dist. 85.18 pc (277.86 l.y.)

STF 2818 AB 8" 533x: Very wide two delta mag. meh. [Need to try this again, Aa-Ab is LBU 2, 9.5 & 0.9"]
21h 41m 59.91s +18° 56' 19.7" P.A. 24 sep 26.8 mag 7.38,10.24 Sp G7III dist. 179.86 pc (586.7 l.y.)

STF 2824 AB-C: 8" 533x: = Kappa Peg Pretty pale yellow A star, bright, with 6 delta mag B wide and clean, small blue dot no diffraction spikes [Did not see BU 989 AB, 5.04 0.2"]
21h 44m 38.70s +25° 38' 42.0" P.A. 288 sep 14.5 mag 4.13,10.80 Sp F5IV dist. 34.22 pc (111.63 l.y.)

AG 276 AB: 8" 533x: A bit hazy but no question, ~2", 1 delta mag, light blue [not physical]
21h 45m 30.71s +21° 56' 23.8" P.A. 2 sep 2 mag 9.62,9.99 Sp F8

STF 2834 AB: 8" 533x: Can see the B star with averted vision at 4" sep but cannot get it with direct vision.
21h 51m 40.18s +19° 18' 25.0" P.A. 298 sep 4.2 mag 6.93,9.89 Sp F5IV dist. 91.91 pc (299.81 l.y.)

BU 75 AB: 8" 533x: With patience for poor conditions and some critical focus I get a good clean split, slightly unequal
21h 55m 31.42s +10° 52' 49.5" P.A. 26.4 sep 1.09 mag 8.40,8.56 Sp G5 dist. 47.78 pc (155.86 l.y.)

STF 2868 AB: 8: 533x: Very brief moment of clean split with seeing, slightly unequal.
22h 09m 22.01s +22° 32' 46.6" P.A. 352 sep 1.1 mag 8.87,9.38 Sp F4III dist. 237.53 pc (774.82 l.y.)

STF 2878 AB 8" 533x: Nice pair, ~1.5", about 1 delta mag
22h 14m 29.18s +07° 58' 34.2" P.A. 116 sep 1.6 mag 6.94,8.11 Sp B9IV dist. 224.22 pc (731.41 l.y.)

HJ 962 AB 8" 533x: = 30 Peg White and blue stars about five delta mag, wide separation
22h 20m 27.56s +05° 47' 22.2" P.A. 17 sep 6.4 mag 5.36,11.50 Sp B5IV dist. 390.63 pc (1274.24 l.y.)

STF 2915 AB 8" 533x: Easy wide slightly unequal pair
22h 32m 33.93s +07° 25' 05.5" P.A. 125 sep 15.2 mag 9.46,9.52 Sp F6IV+F4IV dist. 83.06 pc (270.94 l.y.)

STF 2920 AB 8" 533x: Easy, wide, about 2 delta mag, blue-white stars
22h 34m 31.58s +04° 13' 20.6" P.A. 144 sep 13.7 mag 7.55,8.85 Sp B9.5V dist. 89.13 pc (290.74 l.y.)

STF 2958 AB: 8" 533x: White A and fairly faint bluish B, 3 detla mag ~4".
22h 56m 51.47s +11° 50' 54.0" P.A. 15 sep 4 mag 6.63,9.09 Sp A3Vs dist. 98.81 pc (322.32 l.y.)