Observed again with the 20-inch, again working off the Burnham list and some movement pairs. Seeing was even better than the night before, and I tried to work a different area of the sky. Some gorgeous pairs observed, I'm so glad I'm back on the 20-inch--through I have to return to some of the early Burnhams with my 6-inch, just to test whether I can detect them. I had some pointing accuracy issues, will need to get the eFinder soon.
BU 152 AB: 508; 280x: White and dull blue, closely split at this magnification, nearly 2 Dm. -25% PRO, though there is only 168 AU WS. There is a SOC grade 4 orbit, 737-year period, only time will tell but I don't think it will turn out to be binary.
20h 42m 16.81s +57° 23' 07.4" P.A. 81.00 sep 1.2 mag 7.21,8.80 Sp A4IV dist. 152.44 pc (497.26 l.y.)
BU 155 AB: 508; 560x: Seen with lower magnification but this is the best-looking power, white stars, close but good split, a little more than 1 Dm. No Gaia data on the secondary. SOC grade 5 orbit 765-year period.
20h 51m 05.41s +51° 25' 01.7" P.A. 41.00 sep 0.7 mag 7.36,8.13 Sp A9IV dist. 124.53 pc (406.22 l.y.)
BU 159 AB: 508; 560x: Gorgeous, light yellow A and close, much fainter B. Needed higher magnification to separate them enough for B to be out of A's diffraction. Far separated C (STTA 215 AC) a deep orange color. No parallax data on B.
21h 10m 30.96s +47° 41' 32.0" P.A. 314.00 sep 1.2 mag 6.55,9.07 Sp B6IV dist. 423.73 pc (1382.21 l.y.)
BU 160 BC: 508; 140x: B is widely split and faint, but BC, its near equal well split companion is the attraction. -16% PRO and RVD 1.4 > EV 1.0, it is not binary.
21h 12m 09.28s +45° 41' 21.1" P.A. 115.00 sep 6.4 mag 11.40,11.60
BU 366 AB: 508; 280x: White, near equal, good separation. -47% PRO, it is not binary.
20h 48m 34.14s +50° 29' 27.9" P.A. 130.00 sep 1.5 mag 8.70,8.93 Sp A0
BU 431 AB: 508; 560x: Suspected at 280x but needed 560x for a nice clean split with good star images, unequal, PA to southwest. No Gaia data for B. Needs more measurements to determine if binary.
20h 19m 57.83s +36° 16' 08.0" P.A. 208.00 sep 0.5 mag 8.62,8.96 Sp A7III
BU 432 AB: 508; 280x: Pretty, like a small version of Albeiro, light-orange A and blue-white B closely split, 2 Dm. 80% PRO, 252 AU WS, 1.8+1.5 Msol, 0.1 PMV, it is likely binary and needs an orbit.
20h 24m 48.74s +35° 45' 28.2" P.A. 197.00 sep 1.4 mag 8.61,9.43 Sp F8
BU 433 AB: 508; 280x: Faint, well separated B. C is slightly brighter, much further separated. Parallax overlaps but RVD 2.3 > EV 1.6, it is not binary.
20h 26m 32.25s +56° 18' 41.0" P.A. 207.00 sep 7.6 mag 8.95,11.20 Sp A2
BU 472 AB: 508; 280x: Close split at this power, white, unequal. 34% PRO, 366 AU WS, 3.0+2.8 Msol, it is likely binary and needs an orbit.
20h 59m 46.36s +61° 52' 10.3" P.A. 14.00 sep 0.8 mag 8.76,8.80 Sp A2
BU 660 AB: 508; 200x: Light orange A, well separated faint B seen with direct vision, brightens with averted. -92% PRO, it is not binary.
20h 13m 42.81s +43° 22' 44.4" P.A. 318.00 sep 8.7 mag 6.29,12.70 Sp K3III dist. 208.77 pc (681.01 l.y.)
BU 661 AB: 508; 140x: Bright light orange A, well separated faint but still direct vision B. -44% PRO, it is not binary.
20h 16m 55.28s +40° 21' 54.3" P.A. 69.00 sep 12.3 mag 5.24,11.50 Sp K3.5IIab dist. 483.09 pc (1575.84 l.y.)
BU 681 AB: 508; 280x: Quite beautiful light orange A and very faint B like a planet. PA nearly due west, good separation, needed more magnification to separate them and make the fainter star visible. -47% PRO, they are not binary.
21h 13m 16.58s +16° 55' 08.4" P.A. 242.00 sep 2.9 mag 7.48,10.92 Sp K3III dist. 213.68 pc (697.02 l.y.)
BU 1139 AB: 508; 560x: Glimpses of a faint point at the separation, twice out of A's diffraction. -46% PRO, it is not binary.
21h 01m 55.01s +57° 04' 18.7" P.A. 136.00 sep 2.1 mag 6.69,12.50 Sp B8V dist. 311.53 pc (1016.21 l.y.)
BU 1206 AB: 508; 280x: Lovely, fairly close pair, 3 Dm, needed higher power to separate and darken background sky. 12% PRO, 377 AU WS, 2.3+1.1 Msol, it's possible to be binary and needs an orbit tried.
20h 19m 07.08s +36° 45' 07.6" P.A. 355.00 sep 2.2 mag 7.53,10.70 Sp F4III
BU 1261 AB: 508; 280x: Gorgeous pair, white A and blue-white B >2 Dm, close split. -48% PRO, it is not binary.
21h 16m 07.68s +16° 06' 12.4" P.A. 151.00 sep 1.8 mag 9.00,10.20 Sp A2
BU 1493 AB: 508; 140x: Very faint very wide B. -74% PRO, it is not binary.
20h 45m 17.37s +61° 50' 19.6" P.A. 103.00 sep 42.4 mag 3.43,11.30 Sp K0IV dist. 14.27 pc (46.55 l.y.)
BU 1502 AB: 508; 140x: Faint B quite wide, apodising mask helps find the errant faint point in the normalized diffraction pattern.
21h 18m 34.59s +62° 35' 07.6" P.A. 17.00 sep 196.6 mag 2.46,11.46 Sp A7V dist. 15.04 pc (49.06 l.y.)
STT 400 AB: 508; 560x: Seen with lower powers but higher used to widen the split and get nice star images, light orange-yellow stars, 1 Dm. SOC class 2 orbit, 86-year period, it is coming off apastron and will slowly close in the same NW PA the next 20 years and need higher powers to resolve.
20h 10m 13.32s +43° 56' 44.2" P.A. 324.00 sep 0.7 mag 7.60,9.83 Sp G3V dist. 51.33 pc (167.44 l.y.)
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