Uncovered the 6-inch last night, in spite of a hazy sky. The seeing was quite good, 7/10 or better, though the haze became thin cloud after 10pm. Chased after more CDSA pairs, a few of which were fantastic challenges. A very satisfactory night.
21h 01m 10.93s +46° 09' 20.8" P.A. 159.00 sep 2.9 mag 5.40,9.53 Sp B1Ve dist. 467.29 pc (1524.3 l.y.)
STF2624 AB: 152; 200x: Lovely close pair, nearly 1 Dm, light yellow stars split at 125x but best seen at 200x, in a rich star field. 22% PRO, 4,020 AU WS, 7.7+8.6 Msol, it might be binary and an orbit should be tried.
20h 03m 29.42s +36° 01' 28.6" P.A. 174.00 sep 1.9 mag 7.09,7.73 Sp O9.5IIIe dist. 862.07 pc (2812.07 l.y.)
SHJ 316 AB: 60; 24x: Bright pair in a rich star field. 0% PRO, and an absurdly large 136,820 AU WS, it is not binary.
20h 05m 39.80s +35° 36' 28.1" P.A. 323.00 sep 69.4 mag 7.79,8.82 Sp O7IIIe dist. 487.8 pc (1591.2 l.y.)
SHJ 315 AD: 60; 24x: Bright pair in a rich star field. 17% PRO, too-wide 38,237 AU WS, it is not binary.
20h 06m 01.36s +35° 45' 55.9" P.A. 236.00 sep 20.2 mag 7.89,8.73 Sp B5n
STT 394 AB: 152; 125x: 3 Dm pair, well separated. 28% PRO, 2,011 AU WS, 2.8+1.2 Msol, it is possibly binary and an orbit should be tried.
20h 00m 11.43s +36° 24' 50.8" P.A. 294.00 sep 11.0 mag 7.14,10.27 Sp K1III dist. 218.34 pc (712.23 l.y.)
STF2609 AB: 152; 200x: Pale white A and light orange B, split at 125x, but better seen at 200x, 1 Dm. Hairline split with 60mm at 90x. 3% PRO with 1.4% error, 660 AU WS, 3.8+3.0 Msol, there is a slight chance it's binary and an orbit can be tried.
19h 58m 34.37s +38° 06' 20.8" P.A. 21.00 sep 1.9 mag 6.69,7.64 Sp B5IV dist. 440.53 pc (1437.01 l.y.)
STT 390 AB: 152; 125x: 2 Dm, white, well separated. 8% PRO, 3,285 AU WS, 3.9+1.9 Msol, there is a slight chance it's binary and an orbit can be tried.
19h 55m 06.50s +30° 11' 41.6" P.A. 22.00 sep 9.6 mag 6.63,9.50 Sp B6V+A5V dist. 262.47 pc (856.18 l.y.)
STF2583 AB: 152; 250x: ! Excellent pair, closely split unequal, split 125x but best seen 250x. -67% PRO, it is not binary.
19h 48m 42.05s +11° 48' 57.3" P.A. 104.00 sep 1.4 mag 6.34,6.75 Sp A3V+F9III dist. 157.73 pc (514.52 l.y.)
STF2562 AB: 152; 125x: 2 Dm, wide. 48% PRO, 1,660 AU WS, 1.6+1.0 Msol, and RVD 1.7 = EV 1.7, there is a chance it's binary and an orbit should be tried.
19h 42m 45.86s +08° 22' 57.5" P.A. 251.00 sep 27.2 mag 6.95,8.69 Sp F8V+G0V dist. 66.45 pc (216.76 l.y.)
D 20 AB: 152; 250x: ! Close and difficult pair, high power only. B appears as a haze but sharpens to a point with foveal coaxing and I can hold it direct. There is also a 3rd star C of similar magnitude but wider separation at 90-degrees PA, seen with averted vision. No Gaia parallax data for B, and C does not overlap parallax ranges. Given the great distance to the primary, it's not likely to be binary with an >1" separated companion.
19h 31m 15.78s -02° 06' 36.7" P.A. 65.00 sep 1.3 mag 7.22,9.58 Sp B5V dist. 7142.86 pc (23300.01 l.y.)
STF2540 AB: 152; 125x: White stars, well separated, 2 Dm. -28% PRO, it is not binary.
19h 33m 17.05s +20° 24' 50.5" P.A. 147.00 sep 5.4 mag 7.52,9.23 Sp A3 dist. 152.67 pc (498.01 l.y.)
STF2543 AB: 152; 200x: Bright light-yellow A, but B is seen only with averted vision, well separated. -94% PRO, it is not binary.
19h 36m 12.61s +06° 00' 26.7" P.A. 151.00 sep 11.5 mag 6.76,10.45 Sp G8III dist. 201.61 pc (657.65 l.y.)
SEI 647 AC: 152; 125x: In a string of three very wide 8-9th magnitude stars. Wide, 3 Dm pair. 41% PRO, 13,876 AU WS, 3.3+1.5 Msol, but RVD 2.9 > EV 0.8, it is not binary.
19h 36m 21.91s +35° 40' 39.7" P.A. 177.00 sep 27.7 mag 8.10,11.66 Sp A0
STT 378 AB: 152; 250x: Excellent pair, 1 Dm, closely split. -11% PRO, it is not binary.
19h 36m 32.28s +41° 00' 35.1" P.A. 285.00 sep 1.4 mag 7.74,8.92 Sp A0 dist. 354.61 pc (1156.74 l.y.)
STF2545 AB: 152; 125x: Nearly 2 Dm, nicely split. Also seen with 60mm at 90x. 69% PRO, 336 AU WS, 1.9+1.2 Msol, it is likely binary and needs an orbit.
19h 38m 43.36s -10° 09' 23.7" P.A. 326.00 sep 3.7 mag 6.79,8.54 Sp A9III dist. 86.28 pc (281.45 l.y.)
S 722 AB: 60; 24x: Near equal white stars, well split. 47% PRO, 1,030 AU WS, 1.8+1.8 Msol, and RVD 0.1 < EV 2.5, it is very likely binary and needs an orbit.
19h 39m 12.97s -16° 54' 28.3" P.A. 236.00 sep 10.3 mag 7.17,7.45 Sp A8III+A8V dist. 88.89 pc (289.96 l.y.)
HJ 599 AC: 152; 125x: Beautiful light-yellow A and wide, 2 Dm B, also seen with 60mm 24x. 26% PRO, 3,534 AU WS, 2.7+1.3 Msol, but RVD 3.4 > EV 1.4, it is not binary.
19h 40m 43.34s -16° 17' 35.3" P.A. 41.00 sep 45.5 mag 5.42,7.65 Sp K2III+F8V dist. 73.75 pc (240.57 l.y.)
STFA 45 AB: 60; 24x: Wide white 1 Dm. -71% PRO, it is not binary.
19h 43m 03.26s -08° 18' 26.2" P.A. 145.00 sep 96.3 mag 7.11,7.56 Sp F4V+F5V dist. 72.2 pc (235.52 l.y.)
STF2579 AB: 152; 200x: ! Excellent close pair, very bright A and faint B resolves outside A's first diffraction ring at 200x & 250x. I also see it in the 60mm scope at 90x, but only with foveal coaxing and because I already knew where to look after seeing it in the 6-inch. The refractor and small aperture suppress the bright star's diffraction and provides the contrast needed to see the companion. No Gaia data for the secondary. SOC grade 4 orbit, 657-year period.
19h 44m 58.44s +45° 07' 50.5" P.A. 213.00 sep 2.7 mag 2.89,6.27 Sp B9.5IV dist. 50.58 pc (164.99 l.y.)
BU 467 AB: 152; 200x: Faint, closely separated B seen averted vision through thin cloud. 63% PRO, 327 AU WS, 1.7+0.9 Msol, it is probably binary and needs an orbit.
19h 46m 30.41s -21° 31' 22.9" P.A. 137.00 sep 3.7 mag 7.68,9.91 Sp kA8hF1mF3 dist. 96.71 pc (315.47 l.y.)
STF2580 AB: 152; 125x: Bright light orange A and wide B, also seen with 60mm 24x. 22% PRO, 547 AU WS, 1.4+0.7 Msol, but RVD 2.9 > EV 2.6, it is not binary.
19h 46m 25.60s +33° 43' 39.3" P.A. 68.00 sep 25.9 mag 5.06,9.25 Sp F5V dist. 21.23 pc (69.25 l.y.)
STF2590 AB: 152; 125x: Faint wide B seen with foveal coaxing. 19% PRO, 6,246 AU WS, 4.7+1.8 Msol, it is possible, given the mass, it is binary, and an orbit can be tried.
19h 52m 15.58s +10° 21' 05.8" P.A. 308.00 sep 13.6 mag 6.50,10.31 Sp B7V dist. 325.73 pc (1062.53 l.y.)
DJU 4 AB: 152; 250x: ! Incredible pair, very bright A, B is resolved and in best seeing becomes a small faint hard point, 3 Dm, on A's first diffraction ring. Quite an excellent pair. Shockingly there is -16% PRO with 0.9% error, so in spite of the 132 AU WS and 3.4+1.8 Msol, it is probably not binary, regardless of the SOC grade 5 orbit.
19h 53m 27.69s +24° 04' 46.6" P.A. 248.00 sep 1.5 mag 4.63,7.37 Sp B9.5III dist. 102.56 pc (334.55 l.y.)
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