20 november 2022, Camelopardalis Struves

Used the 6-inch refractor, weather cold but dry, transparent sky but the seeing was choppy early, improved after 10pm.

STF 419 AB 152; 150x: Near equal white stars, close split with low power, improved with 150x.  Split with 60mm 90x.  -89% PRO, it is not binary.

03h 42m 45.19s +69° 50' 44.3" P.A. 73.00 sep 2.9 mag 7.76,7.81 Sp A5IV dist. 310.56 pc (1013.05 l.y.)

STF 418 AB: 152; 125x: Dim pair, wide, forms a string of three, one of which brightens with averted vision (FOX 133 BC).  -84% PRO, it is not binary (nor is BC)

03h 46m 20.22s +75° 22' 30.7" P.A. 64.00 sep 24.2 mag 9.75,10.38 Sp G

STF 421 AB: 152; 150x: B appears with averted vision, can just barely hold it direct, wide.  -4% PRO, 2,290 AU WS, 2.8+1.1 Msol, but the RVD 4.3 > EV 1.7, it is not binary.

03h 46m 13.88s +71° 37' 05.3" P.A. 236.00 sep 12.5 mag 7.07,10.69 Sp G9III dist. 182.82 pc (596.36 l.y.)

STF 428 AB: 152; 125x: Dim unequal stars, wide, with third with averted vision (BU 1380).  -86% PRO, it is not binary.  

03h 47m 46.60s +70° 32' 57.7" P.A. 145.00 sep 25.3 mag 8.91,11.13 Sp A2 dist. 344.83 pc (1124.84 l.y.)

STF 455 AB: 152; 125x: Faint, unequal, wide.  -34% PRO, it is not binary (nor is AC).

03h 57m 07.09s +69° 30' 56.4" P.A. 166.00 sep 12.1 mag 8.56,9.16 Sp G5 dist. 229.36 pc (748.17 l.y.)

STF 373 AB: 152; 125x: Triangle of equal magnitude stars, one with a faint wide companion.  -37% PRO, it is not binary.

03h 22m 04.87s +62° 44' 29.2" P.A. 120.00 sep 20.0 mag 7.73,10.01 Sp F8 dist. 123.15 pc (401.72 l.y.)

STF 374 AB: 152; 125x: 1 Dm, well split.  -8% PRO, 1,389 AU WS, 1.8+1.4 Msol, RVD 1.2 < EV 2.0, there is some chance it is binary and an orbit should be tried.

03h 24m 14.96s +67° 27' 18.6" P.A. 297.00 sep 11.2 mag 7.80,8.99 Sp F8 dist. 142.05 pc (463.37 l.y.)

STF 362 AB: 152; 125x: Near equal white stars, in a rich field (open cluster Stock 23, aka Pazmino's Cluster).  -64% PRO, it is not binary.  

03h 16m 17.37s +60° 02' 07.1" P.A. 142.00 sep 7.1 mag 8.31,8.60 Sp B3V

STF 378 AB: 152; 125x: Unequal wide pair.  -42% PRO, it is not binary.

03h 24m 27.21s +58° 25' 52.0" P.A. 314.00 sep 18.7 mag 9.55,10.64 Sp F

STF 384 AB: 152; 200x: Very fine, 1 Dm very close split, seen with 125x, best with high.  26% PRO, 1,410 AU WS, 4.8+3.4 Msol, it is possibly binary and needs an orbit tried.

03h 28m 29.05s +59° 54' 24.0" P.A. 273.00 sep 2.0 mag 8.13,8.85 Sp F8 dist. 757.58 pc (2471.23 l.y.)

STF 385 AB: 152; 125x: Could not resolve faint B, too close to the bright primary.  48% PRO, 2,302 AU WS, 11.7+4.6 Msol, it is likely binary and needs an orbit.

03h 29m 04.14s +59° 56' 25.2" P.A. 162.00 sep 2.3 mag 4.23,7.80 Sp B9Ia dist. 595.24 pc (1941.67 l.y.)

STF 400 AB: 152; 200x: Beautiful, close split with a large Dm.  -41% PRO, it is not binary, though there is a SOC grade 3 orbit 267-year period.

03h 35m 01.04s +60° 02' 29.0" P.A. 269.00 sep 1.6 mag 6.79,7.97 Sp F3V dist. 53.36 pc (174.06 l.y.)

STF 445 AB: 152; 150x: Close split, large Dm, in an arc of three stars of similar magnitude.  -48% PRO, it is not binary.

03h 50m 39.22s +60° 07' 22.8" P.A. 259.00 sep 3.1 mag 8.97,9.90 Sp B5 dist. 1149.43 pc (3749.44 l.y.)

STF 397 AB: 152; 125x: Faint, well split, unequal.  12% PRO, 2,395 AU WS, 2.5+1.7 Msol, it is possibly binary and an orbit should be tried.

03h 33m 59.02s +60° 24' 31.9" P.A. 42.00 sep 5.2 mag 9.33,10.46 Sp A0 dist. 12500 pc (40775 l.y.)

STF 402 AB: 152; 125x: A is light orange, B flashes with averted vision, then can be held direct.  Well split.  -92% PRO, it is not binary.

03h 36m 03.81s +63° 17' 17.2" P.A. 165.00 sep 12.0 mag 7.58,10.49 Sp K4III dist. 1818.18 pc (5930.9 l.y.)

STF 389 AB: 152; 150x: Very light-yellow A and very light-blue B, about 1 Dm, split with 125x but better seen 150x.  Also hairline split with 60mm 90x.  -40% PRO, it is not binary.

03h 30m 10.93s +59° 21' 57.8" P.A. 72.00 sep 2.6 mag 6.42,7.89 Sp A2V dist. 95.15 pc (310.38 l.y.)

STF 396 AB: 152; 125x: Wide unequal pair, also split with 60mm 40x.  70% PRO, 1,925 AU WS, 2.1+1.5 Msol, and the RVD 1.1 < EV 1.8.  It is likely binary and needs an orbit.

03h 33m 32.19s +58° 45' 55.3" P.A. 245.00 sep 20.5 mag 6.43,7.68 Sp A4III dist. 21.34 pc (69.61 l.y.)

STF398 AB: 152; 125x: Very faint pair, averted vision only, near equal, well split. 10.3/10.3 9.6 very faint av only well split.  Gaia puts the magnitudes at 11.33/11.35.  -67% PRO, they are not binary.

03h 34m 15.03s +58° 17' 28.6" P.A. 332.00 sep 9.6 mag 10.30,10.30

STF 390 AB: 152; 125x: Bright white A and faint B, >3 Dm, well split.  -79% PRO, it is not binary.

03h 30m 00.23s +55° 27' 06.6" P.A. 159.00 sep 14.6 mag 5.06,10.02 Sp A1V dist. 60.9 pc (198.66 l.y.)

STF 461 AB: 152; 200x: Notched elongation, very small scale, with high power only. 65% PRO, 298 AU WS, 2.5+1.5 Msol, it is likely binary and needs an orbti.

03h 55m 24.47s +56° 30' 16.4" P.A. 121.00 sep 1.0 mag 8.58,10.33 Sp G0II

STF 472 BC: 152; 125x: Very faint near equal pair, well split, widely split another similar magnitude star (AB).  21% PRO, 2,824 AU WS, 1.9+1.7 Msol, and the RVD 0.6 < EV 1.5.  It is likely binary and needs an orbit.

04h 06m 20.49s +72° 02' 17.7" P.A. 16.00 sep 6.9 mag 10.49,10.79 Sp G0

STF 474 AB: 152l 125x: Wide near equal.  -89% PRO, it is not binary.

04h 12m 33.44s +76° 14' 12.5" P.A. 151.00 sep 24.3 mag 9.54,9.84 Sp G5

STF 480 AB: 152; 125x: Excellent near equal close pair, split even with low power.  -35% PRO, it is not binary.  

04h 04m 29.36s +55° 44' 26.2" P.A. 327.00 sep 3.4 mag 9.33,9.53 Sp K0III dist. 378.79 pc (1235.61 l.y.)

STF 484 AG: 152; 125x: 3 Dm pairing withing the cluster NGC 1502, very wide.  -10% PRO, it is not binary.  There are many other stars in the cluster, almost all of non-overlapping parallax ranges, or with weighted separations too far apart to support binarity.

04h 07m 51.38s +62° 19' 48.4" P.A. 260.00 sep 59.9 mag 6.91,9.63 Sp B0III dist. 159.24 pc (519.44 l.y.)

STF 485 AE: 152; 125x: Bright white stars near equal wide in center of open cluster NGC 1502.  -66% PRO, it is not binary.

04h 07m 51.38s +62° 19' 48.4" P.A. 305.00 sep 18.0 mag 6.91,6.94 Sp B0II+B0II dist. 159.24 pc (519.44 l.y.)

STF 486 AB: 152; 125x: Very faint, unequal, seen first with averted vision then can hold, wide.  -89% PRO, it is not binary.

04h 19m 48.83s +79° 28' 57.7" P.A. 355.00 sep 8.2 mag 10.12,11.60 Sp A2

STF 490 AB: 152; 125x: Near equal, nice wide split, white.  -52% PRO, it is not binary.

04h 10m 27.73s +60° 09' 23.8" P.A. 58.00 sep 4.7 mag 9.33,9.59 Sp F0

STF 496 AB: 152; 125x: Faint, wide, slightly unequal, one of three faint stars in a triangle.  -90% PRO, it is not binary.

04h 16m 29.93s +70° 30' 28.8" P.A. 58.00 sep 30.8 mag 11.33,10.89 Sp F6V+K2V

STF 498 AB: 152; 200x: Very difficult at this aperture, high power needed to separate two faint stars, with seeing only.  -89% PRO, it is not binary.

04h 12m 45.23s +53° 46' 19.3" P.A. 159.00 sep 1.4 mag 10.13,10.75 Sp A0 dist. 202.43 pc (660.33 l.y.)

STF 503 AB: 152; 150x: Faint unequal pair, seen directly but brightens with averted vision.  -38% PRO, it is not binary.

04h 17m 04.19s +64° 08' 18.5" P.A. 228.00 sep 4.9 mag 10.49,10.58

STF 504 AB: 152; 125x: Unequal, fairly close separation. 39% PRO, 4,648 AU WS, 3.4+2.4 Msol, the RVD 1.5 = EV 1.5, so there's a chance it's binary and needs an orbit tried.

04h 18m 18.53s +67° 33' 49.4" P.A. 267.00 sep 7.0 mag 9.30,10.52 Sp K0

29 october 2023: Cygnus Struves

I almost didn't observe, but the night was clear and seeing not too bad.  I pointed the 6-inch refractor opposite of the rising, just past full moon, to keep the glare out of my eyes.  I covered many Struve pairs in Cygnus, which was still respectably high in the sky.  Transparency was tending poor as there was a constant stream of marine haze flowing, but seeing was ok, 6-7/10.  Some very nice pairs seen.  To end the night I scanned the moon's terminator which was close to the limb, and was amazed at the many seams between crater and mountain rangers created very dark, very thin lines.  The dark pools of shadow were darker than the sky beyond the limb.  Seeing held up enough to use 200x.  A very good night.

STF2669 AB: 152; 175x: Slightly unequal, wide.  76% PRO, 4,600 AU WS, 1.6+1.4 Msol, and the RVD 0.5 < EV 1.1, it is likely binary and needs an orbit.

20h 19m 24.48s +56° 07' 17.8" P.A. 259.00 sep 23.4 mag 9.28,9.91 Sp F5

STF2668 AB-C: 152; 150x: Close B is dark yellow color, 2 Dm.  -1% PRO but with a 10% error, only 577 AU WS, 3.1+1.7 Msol, it is possible this is binary and needs an orbit.
20h 20m 15.22s +39° 24' 11.8" P.A. 280.00 sep 3.5 mag 6.34,8.49 Sp A1V dist. 180.51 pc (588.82 l.y.)

STF2681 AB: 152; 125x: Triple forming a right-angle triangle, AB is the closer pairing, 2 Dm, but has -42% PRO, it is not binary.  AC has an even more out of range parallax and is not binary either.  CD, while they seem to have similar parallax and proper motions, do not overlap parallax ranges, and are not binary.
20h 22m 49.54s +53° 25' 02.8" P.A. 39.00 sep 6.8 mag 7.97,10.61 Sp A0V dist. 448.43 pc (1462.78 l.y.)

STF2687 AB: 152; 125x: Wide B is considerably fainter, 2 Dm.  11% PRO, 5,864 AU WS, 3.3+2.1 Msol, there is a small possibility is it binary and an orbit should be tried.
20h 26m 23.47s +56° 38' 19.3" P.A. 118.00 sep 25.1 mag 6.37,8.31 Sp B9V dist. 189.04 pc (616.65 l.y.)

STF2693 AB: 152; 125x: Attractive pair, wide, nearly 1 Dm.  28% PRO, 3,649 AU WS, 2.4+1.9 Msol, it is possible to be binary and an orbit should be tried.
20h 28m 24.22s +54° 30' 05.4" P.A. 12.00 sep 13.7 mag 8.17,9.23 Sp A0

STF2691 AB: 152; 125x: Wide, near equal.  24% PRO, 10,985 AU WS, 3.7+3.5 Msol, there is a small chance it is binary and an orbit should be tried.
20h 29m 43.18s +38° 07' 31.5" P.A. 32.00 sep 16.3 mag 8.14,8.45 Sp B6V dist. 214.13 pc (698.49 l.y.)

STF2700 AB: 152; 125x: Light orange A and blue B, nearly 1 Dm, also seen with 60mm 40x.  -18% PRO, it is not binary.
20h 34m 44.60s +32° 30' 21.1" P.A. 284.00 sep 24.1 mag 6.99,8.75 Sp K2III dist. 57.9 pc (188.87 l.y.)

STF2702 AB: 152; 125x: Beautiful near equal white pair, good separation even with low power.  86% PRO, 809 AU WS, 2.1+2.0 Msol, it is very likely binary and needs an orbit.
20h 35m 34.94s +35° 10' 10.8" P.A. 208.00 sep 3.1 mag 8.70,8.99 Sp A0

STF2705 AB: 152; 150x: Gorgeous light blue, 1 Dm close pair, very nice.  48% PRO, 1,947 AU WS, 4.8+3.7 Msol, it is likely binary and needs an orbit.
20h 37m 44.32s +33° 21' 59.4" P.A. 264.00 sep 3.1 mag 7.48,8.54 Sp K0IIb dist. 595.24 pc (1941.67 l.y.)

STF2717 AB: 152; 250x:  Very closely split, need high power and steady seeing.  A is bright, B emerges just outside the edge of A's diffraction with seeing.  -26% PRO, but only 583 AU WS, 3.3+1.8 Msol, it's a surprise to not likely to be binary.
20h 37m 48.12s +60° 45' 21.5" P.A. 259.00 sep 2.1 mag 7.34,9.46 Sp G3III dist. 263.16 pc (858.43 l.y.)

STF2707 AB: 152; 125x: Ho Hum two stars in a dense field.  Wide, 1 Dm.  -85% PRO, it is not binary.
20h 37m 51.14s +47° 56' 41.9" P.A. 29.00 sep 21.8 mag 7.94,9.45 Sp A0 dist. 172.12 pc (561.46 l.y.)

STF2708 AB: 152; 125x: Triple forming a right-angle triangle, all different magnitudes.  -99% PRO, it is not binary.
20h 38m 40.19s +38° 38' 06.3" P.A. 323.00 sep 57.9 mag 6.83,8.67 Sp G2V dist. 27.16 pc (88.6 l.y.)

STF2711 AB: 152; 150x: Closely split, 1 Dm.  70% PRO, 867 AU WS, 2.8+2.2 Msol, it is likely binary and needs an orbit.

20h 39m 35.12s +30° 30' 14.6" P.A. 223.00 sep 2.4 mag 8.17,9.24 Sp A2.5V dist. 344.83 pc (1124.84 l.y.)

STF2714 AB: 152; 125x: B is very faint, with averted vision only, wide, white. -38% PRO, it is not binary.
20h 40m 16.01s +29° 46' 49.0" P.A. 338.00 sep 6.8 mag 8.97,12.50 Sp F8

STF2719 AB: 152; 125x: Faint, unequal, wide.  89% PRO, 1,152 AU WS, 1.1+0.8 Msol, and the RVD 1.4 < EV 1.7, it is possibly binary and needs an orbit.
20h 40m 43.40s +43° 21' 00.2" P.A. 142.00 sep 14.2 mag 9.18,11.02 Sp G5

STF2716 AB: 152; 250x: Pretty light orange A and blue B, close separation, needed high power, 2 Dm.  1% PRO, 757 AU WS, 4.6+2.5 Msol, it is possible to be binary and an orbit should be tried.
20h 41m 02.54s +32° 18' 26.3" P.A. 45.00 sep 2.8 mag 5.75,8.10 Sp G2III dist. 244.5 pc (797.56 l.y.)

STF2726 AB: 152; 150x: Bright yellow-orange and very much fainter B, close separation, split with low power but better with higher.  -37% PRO, it is not binary.  
20h 45m 39.76s +30° 43' 10.8" P.A. 74.00 sep 5.8 mag 4.33,9.50 Sp K0III dist. 61.65 pc (201.1 l.y.)

STF2732 AB: 152; 125x: White unequal pair, nearly 1 Dm, closely split with low power.  52% PRO, 1,041 AU WS, 3.5+2.0 Msol, it is possibly binary and needs an orbit.
20h 48m 42.74s +51° 54' 37.1" P.A. 73.00 sep 4.3 mag 6.38,8.63 Sp B8np dist. 222.72 pc (726.51 l.y.)

STF2731 AB: 152; 125x: Excellent pair, good split, nearly 2 Dm, white stars.  -11% PRO, it is not binary.
20h 49m 00.64s +39° 47' 29.9" P.A. 86.00 sep 4.1 mag 7.65,9.59 Sp B9IV dist. 497.51 pc (1622.88 l.y.)

STF2741 AB: 152; 250x: Beautiful unequal pair, A is dull white, B is 1 Dm and bluish white, very nice.  -13% PRO, it is not binary.
20h 58m 30.03s +50° 27' 42.4" P.A. 24.00 sep 2.0 mag 5.94,6.79 Sp B5Vn dist. 331.13 pc (1080.15 l.y.)

STF2743 AB: 152; 125x: A is yellow and bright, B wide and faint and appears blue.  -18% PRO, it is not binary.
20h 59m 49.55s +47° 31' 15.4" P.A. 353.00 sep 21.0 mag 4.74,9.43 Sp B1ne dist. 434.78 pc (1418.25 l.y.)

STF2746 AB: 152; 250x: Faint pair, split with seeing, highly unequal light orange stars.  71% PRO, 208 AU WS, 2.1+1.7 Msol, it is likely binary and needs an orbit.
21h 01m 50.05s +39° 15' 38.4" P.A. 323.00 sep 1.2 mag 7.92,8.71 Sp F0 dist. 249.38 pc (813.48 l.y.)

H 4 113 AB: 152; 125x: = STF2748 Bright light orange A and wide faint B.  40% PRO, 12,128 AU WS, 6.2+4.7 Msol, but the RVD 4.7 > EV 1.1, it is not binary.
21h 02m 20.95s +39° 30' 32.5" P.A. 299.00 sep 18.9 mag 6.62,9.49 Sp K3II-III dist. 223.71 pc (729.74 l.y.)

STF2747 AB: 152; 125x: Slightly unequal, well split light-yellow stars.  -16% PRO, it is not binary.
21h 02m 21.92s +37° 39' 14.0" P.A. 266.00 sep 4.6 mag 8.45,8.66 Sp G5 dist. 44.39 pc (144.8 l.y.)

STF2757 AB: 152; 150x: Excellent unequal close pair, white.  -26% PRO, it is not binary.
21h 04m 34.72s +52° 23' 59.2" P.A. 264.00 sep 1.9 mag 7.82,9.24 Sp B9.5V dist. 227.79 pc (743.05 l.y.)

STF2753 AB: 152; 125x: White A, and wide B flashes with averted vision and then fades like an ember.  With time I can hold it direct.  -87% PRO, it is not binary.
21h 04m 57.74s +35° 25' 46.0" P.A. 335.00 sep 29.3 mag 7.38,10.74 Sp F0 dist. 277.78 pc (906.12 l.y.)

STF2758 AB: 152; 125x: Very bright, light orange, wide stars.  Strangely, Gaia is not returning any results for these stars.  SOC grade 4 orbit, 704-year period -- only 11.37 light years distant.  
21h 06m 53.95s +38° 44' 57.9" P.A. 154.00 sep 32.0 mag 5.35,6.10 Sp K5V+K7V dist. 3.49 pc (11.38 l.y.)

STF2759 AB: 152; 125x: Faint, unequal, wide.  -82% PRO, it is not binary.

21h 06m 27.66s +32° 27' 11.5" P.A. 334.00 sep 19.0 mag 8.72,10.06 Sp G5 dist. 65.36 pc (213.2 l.y.)

STF2760 AB: 152; 125x: Slightly unequal, well split.  -90% PRO, it is not binary.
21h 06m 46.78s +34° 07' 56.2" P.A. 33.00 sep 5.6 mag 7.90,8.74 Sp A4III dist. 137.17 pc (447.45 l.y.)

STF2762 AB: 152; 200x: Bright white A has a 2 Dm close companion, best seen with high power.  The pair is in a Sagitta-like asterism of other faint stars.  -9% PRO, it is not binary.
21h 08m 38.87s +30° 12' 20.5" P.A. 303.00 sep 3.3 mag 5.70,8.10 Sp B9V dist. 115.74 pc (377.54 l.y.)

STF2772 AB: 152: 125x: Faint, well split, 1 Dm, B seen averted vision then can hold direct.  -78% PRO, it is not binary.
21h 09m 54.83s +44° 21' 30.9" P.A. 224.00 sep 12.4 mag 9.51,10.93 Sp M1

STF2773 AB: 152; 200x: Excellent unequal closely separated pair, in a line of other stars of different magnitudes.  Seen with 125x but better viewed 200x.  1% PRO with the same error, 1,452 AU WS, 2.9+2.5 Msol, it is not likely binary.
21h 10m 14.01s +43° 59' 51.7" P.A. 112.00 sep 3.3 mag 8.46,9.09 Sp A0

STF2779 AB: 152; 125x: Equal, well split.  -96% PRO, it is not binary.
21h 14m 26.00s +29° 05' 08.5" P.A. 164.00 sep 15.1 mag 9.74,9.83 Sp F0

STF2785 AB: 152; 150x: Excellent pair, >1 Dm, dull yellow, closely split.  -14% PRO, it is not binary.
21h 17m 36.79s +39° 44' 46.1" P.A. 234.00 sep 2.9 mag 7.94,9.94 Sp F2V dist. 222.72 pc (726.51 l.y.)

HJ 1634 AB: 152; 125x: =STF2782. Wide, near equal.  -96% PRO, it is not binary.
21h 18m 17.00s +42° 44' 04.3" P.A. 143.00 sep 28.9 mag 9.32,9.53 Sp K0

STF2789 AB: 152; 125x: Near equal, white, wide.  98% PRO, 565 AU WS, 1.6+1.5 Msol, and the RVD 0.0 < EV 3.1, it certainly is physical, if not binary.  SOC grade 5 orbit, 18,000-year period (which seems rather outlandishly long).
21h 19m 58.84s +52° 58' 44.1" P.A. 113.00 sep 6.9 mag 7.71,7.87 Sp F8V

STF2792 AB: 152; 150x: Unequal, well split, with medium power due to faintness.  -16% PRO, it is not binary.
21h 23m 05.00s +28° 57' 18.3" P.A. 331.00 sep 7.4 mag 9.19,10.63 Sp A7 dist. 246.91 pc (805.42 l.y.)

STF2800 AB: 152; 125x: Slightly unequal, well split.  -69% PRO, it is not binary.
21h 28m 43.09s +49° 52' 06.6" P.A. 254.00 sep 9.1 mag 9.50,10.41 Sp A5 dist. 444.44 pc (1449.76 l.y.)

STF2803 AB: 152; 125x: Very wide, 1 Dm.  -80% PRO, it is not binary.
21h 29m 52.95s +52° 56' 01.8" P.A. 285.00 sep 25.9 mag 7.24,9.60 Sp B9.5IV-V

STF2802 AB: 152; 125x: Very nice, slightly unequal.  -19% PRO, it is not binary.
21h 31m 48.94s +33° 48' 56.2" P.A. 9.00 sep 3.9 mag 8.60,8.70 Sp A5 dist. 214.13 pc (698.49 l.y.)

STF2808 AC: 152; 125x: 3 Dm, very wide.  -91% PRO, it is not binary.
21h 35m 45.75s +31° 00' 34.9" P.A. 286.00 sep 42.8 mag 8.06,11.07 Sp K1V dist. 279.33 pc (911.17 l.y.)

STF2814 AB: 152; 125x: Faint, 1 Dm, well split.  68% PRO, 2,971 AU WS, 2.5+1.8 Msol, and the RVD 1.3 < EV 1.6, it is likely binary and an orbit should be tried.
21h 38m 56.31s +36° 22' 53.0" P.A. 160.00 sep 8.1 mag 8.77,9.87 Sp F0 dist. 392.16 pc (1279.23 l.y.)

STF2820 AB: 152; 125x: Exceptionally fine and faint B, wide, much fainter than bright A.  B seen directly and it brightens with averted vision.  79% PRO, 2,766 AU WS, 2.3+1.1 Msol, it is likely binary and needs an orbit.
21h 42m 34.15s +42° 26' 26.5" P.A. 230.00 sep 16.0 mag 7.48,10.56 Sp A0 dist. 153.85 pc (501.86 l.y.)

STF2822 AB: 152; 125x: Excellent if very close split with seeing and >200x only, significant delta magnitude.  No Gaia parallax data for the secondary.  SOC grade 3 orbit 692-year period.
21h 44m 08.57s +28° 44' 33.4" P.A. 325.00 sep 1.6 mag 4.75,6.18 Sp F6V+G2V dist. 22.24 pc (72.55 l.y.)

STF2832 AB: 152; 125x: Wide near equal, rich field.  -1% PRO, it is not likely binary.

21h 49m 14.48s +50° 30' 54.2" P.A. 213.00 sep 13.2 mag 7.77,8.32 Sp B9IV dist. 152.44 pc (497.26 l.y.)

STF2829 AB: 152; 125x: Unequal, wide.  -70% PRO, it is not binary.
21h 49m 23.85s +30° 45' 14.1" P.A. 15.00 sep 17.1 mag 8.91,9.66 Sp A0 dist. 125.79 pc (410.33 l.y.)

STF2846 AB: 152; 125x: Wide nearly 1 Dm, B brightens with averted vision.  No Gaia parallax data for the primary.
21h 54m 49.88s +45° 47' 29.8" P.A. 266.00 sep 3.6 mag 8.43,10.30 Sp A0 dist. 74.74 pc (243.8 l.y.)

11 november 2023

Last night turned out to be a very satisfying night.  Seeing was predicted to be above average, and it was good enough to go after some fairly close pairs, but not for the movement pairs.  Rather than run through my Struve list I went through Burnhams, and they provided plenty challenge pairs which the night could still support.

Another special sight was Jupiter, which had an Io shadow transit.  The shadow was about midway when I first looked at it, a little behind the Great Red Spot.  There was a great swirl and eddies of bands around the spot, and I could see a redder/darker section of it.  Over the next half hour or so the Spot continued to move towards the limb and the round shadow caught up to it along its lower edge -- and by that time I could see the bright yellow-orange disk of Io, which I then watched slip past the limb into open sky. 

STF 331 AB: 508; 150x: Bright white A, wide unequal B.  98% PRO, 1,799 AU WS, 3.5+2.5 Msol, it is likely binary and needs an orbit.

03h 00m 52.18s +52° 21' 06.5" P.A. 85.00 sep 12.0 mag 5.21,6.17 Sp B7V+B9V dist. 140.65 pc (458.8 l.y.)

BU 1175 AB: 508; 1270x: Light orange A, B is blue due to its faintness, nearly 2 Dm.  Suspected as a brightening in A's diffraction at 635x, seen clearly split at high power with seeing with PA nearly due west. No Gaia data for the secondary.

03h 05m 46.39s +43° 42' 08.9" P.A. 275.00 sep 0.7 mag 7.23,8.80 Sp F5+A3 dist. 197.63 pc (644.67 l.y.)

BU  526 AB: 508; 150x: Algol.  B star not hard to pick out with low power, very wide.  No Gaia data.

03h 08m 10.13s +40° 57' 20.3" P.A. 156.00 sep 59.4 mag 2.11,12.70 Sp B8V dist. 27.57 pc (89.93 l.y.)

BU 1293 AB: 508; 280x: Delicate, white A and B is faint and grey, small, well split, like a ghost.  -1% PRO with the same error, 581 AU WS, 3.4+1.5 Msol, it is not likely binary.

02h 54m 00.98s +47° 09' 39.2" P.A. 350.00 sep 2.1 mag 6.81,10.45 Sp B9 dist. 194.55 pc (634.62 l.y.)

BU  788 AB: 508; 280x: A probably paired with another wide bright star.  AB is closely separated, 2 Dm, very pretty.  Split with low power, better >250x.  6% PRO with 2% error, 1,773 AU WS, 3.1+2.0 Msol, it probably is not binary.

03h 35m 14.22s +42° 35' 26.9" P.A. 303.00 sep 2.6 mag 8.97,11.07 Sp A0 dist. 869.57 pc (2836.54 l.y.)

BU  533 AB: 508; 280x: Fine pair, near equal.  -12% PRO, 103 AU WS, 1.6+1.7 Msol, it is not binary.

03h 35m 37.81s +31° 40' 48.7" P.A. 221.00 sep 1.0 mag 7.55,7.74 Sp F4V dist. 85.98 pc (280.47 l.y.)

BU  535 AB: 178; 560x: Atik.  B appears as a persistent brightening on A's diffraction ring, resolves to a point with seeing, much fainter than A.  No Gaia data for the secondary.

03h 44m 19.13s +32° 17' 17.7" P.A. 21.00 sep 1.0 mag 3.91,6.70 Sp B1III dist. 343.64 pc (1120.95 l.y.)

BU  880 AB: 508; 280x: Gorgeous hairline split, unequal.  Atik in the corner of the field.  No Gaia data for the secondary.

03h 44m 34.19s +32° 09' 46.2" P.A. 18.00 sep 0.6 mag 9.28,9.51 Sp B5V dist. 151.98 pc (495.76 l.y.)

BU  263 AB: 508; 500x: Resolved with seeing, slightly unequal light orange stars.  No Gaia data for the pair.

03h 56m 27.06s +33° 10' 57.7" P.A. 109.00 sep 0.6 mag 9.03,9.24 Sp F8

BU  546 AB: 508; 280x: Perfect near equal white stars, nice split.  50% PRO, 159 AU WS, 1.5+1.5 Msol, it is very likely binary and needs an orbit.

04h 11m 26.98s +41° 51' 35.2" P.A. 230.00 sep 1.0 mag 9.31,9.39 Sp F8 dist. 319.49 pc (1042.18 l.y.)

BU  310 AB: 508; 150x: Easy wide pair.  -21% PRO, it is not binary.

04h 22m 00.26s +39° 56' 03.3" P.A. 173.00 sep 18.9 mag 7.10,12.62 Sp F8 dist. 54.56 pc (177.97 l.y.)

BU  789 AB: 508; 280x: Lovely unequal, close split, white. No Gaia data for the secondary.

04h 31m 33.56s +37° 39' 08.7" P.A. 323.00 sep 0.9 mag 8.70,9.42 Sp F8 dist. 81.43 pc (265.62 l.y.)

BU  306 AB: 508; 280x: Bright A and much fainter blue B, well separated.  Best seen >200x to separate B from white A's diffraction.  -1% PRO, it is not likely binary.

02h 43m 51.25s +25° 38' 18.0" P.A. 19.00 sep 2.9 mag 6.40,10.36 Sp A3V dist. 104.28 pc (340.16 l.y.)

BU  307 AB: 508; 150x: Wide, much fainter B.  -76% PRO, it is not binary.

02h 47m 38.61s +29° 40' 42.8" P.A. 316.00 sep 16.0 mag 7.11,11.60 Sp B7III dist. 350.88 pc (1144.57 l.y.)

BU  525 AB: 508; 500x: Lovely close split, unequal, white.  No Gaia data.

02h 58m 53.11s +21° 37' 03.9" P.A. 275.00 sep 0.5 mag 7.47,7.45 Sp A3 dist. 151.52 pc (494.26 l.y.)