Another good night with the 6-inch observing Struves.
STF1455 A-BC: 152; 125x: Wide 1 Dm faint pair. Did not see BC, 2.0" 11.33/11.27. WDS says not physical, and there is no, -56%, parallax range overlap. And for that matter BC is not binary either, -41% parallax range overlap.
10h 57m 51.68s +85° 44' 21.9" P.A. 249.00 sep 34.2 mag 10.24,11.37 Sp G8
STF1479 AB: 152; 125x: Very close split at low power, around 4", 2 Dm, light orange stars. WDS says it's physical, and there is 41% overlap of parallax ranges, only 614 AU weighted separation, 1.5+1.2 Msol, so it is likely binary.
11h 02m 22.92s +83° 13' 19.1" P.A. 25.00 sep 4.5 mag 8.93,9.96 Sp F8 dist. 131.75 pc (429.77 l.y.)
STF1480 AB: 152; 125x: Wide 2 Dm, B appears with averted vision at first, then can hold direct, light orange stars. WDS says not physical, and there is -96% overlap of the parallax ranges.
11h 01m 44.86s +82° 10' 32.0" P.A. 331.00 sep 23.3 mag 9.52,11.17 Sp F0
STF1499 AB: 152; 125x: Well split, 2 Dm white stars. WDS says proper motion indicates physical, but there is -51% parallax range overlap, it is not likely binary.
11h 09m 28.18s +83° 05' 45.4" P.A. 319.00 sep 6.7 mag 10.24,10.47 Sp K2 dist. 55.59 pc (181.33 l.y.)
STF1539 AB: 152; 125x: Wide, 1 Dm, white. WDS says it's physical, but there is -91% parallax range overlap, it is not possible to be binary.
11h 30m 18.10s +81° 02' 14.3" P.A. 313.00 sep 19.4 mag 8.49,9.85 Sp F8 dist. 78.19 pc (255.06 l.y.)
STF1606 AB: 152; 300x: Notched elongation, near equal, PA to southeast. WDS grade 4 orbit, 1431-year period. Unfortunately, there is no Gaia data for the secondary.
12h 10m 47.34s +39° 53' 29.5" P.A. 139.10 sep 0.6 mag 7.44,7.93 Sp A8III dist. 120.19 pc (392.06 l.y.)
12h 11m 33.63s +36° 05' 21.7" P.A. 29.00 sep 27.0 mag 8.89,9.83 Sp A3 dist. 188.68 pc (615.47 l.y.)
STF1609 AB: 152; 125x: White A and 2 Dm wide B. WDS says it is physical, but there is no parallax data for the secondary, so it is not certain.
12h 11m 41.76s +50° 50' 15.8" P.A. 205.00 sep 11.1 mag 7.98,9.55 Sp F2 dist. 184.84 pc (602.95 l.y.)
STF1610 AB: 152; 125x: 2 Dm and quite wide. WDS says parallax indicates physical, and there is 91% overlap of the parallax ranges, 3,543 AU weighted separation, 1.5+0.9 Msol. But the radial velocity delta 2.1 exceeds the escape velocity, it is not likely binary.
12h 11m 53.03s +38° 46' 03.8" P.A. 331.00 sep 29.5 mag 8.56,10.62 Sp G4V dist. 139.28 pc (454.33 l.y.)
STF1613 AB: 152; 200x: Near equal, hairline split with seeing. WDS uncertain, but there is 10% overlap of the parallax ranges, only 252 AU weighted separation, 1.7+1.7 Msol, so it is probably binary.
12h 12m 34.01s +35° 45' 45.6" P.A. 7.00 sep 1.2 mag 9.29,9.36 Sp F5 dist. 200 pc (652.4 l.y.)
STF1622 AB: 152; 125x: Pretty colors, yellow A and blue B, 2 Dm, wide. WDS says parallax indicates non-physical, and there is -2% parallax range overlap, 2,609 AU weighted separation, 4.6+2.0 Msol, and the radial velocity delta 4.5 exceeds the escape velocity 2.1, it is not physical.
12h 16m 07.55s +40° 39' 36.6" P.A. 260.00 sep 11.6 mag 5.86,8.71 Sp M1III+F7V dist. 236.41 pc (771.17 l.y.)
STF1624 AB: 152; 125x: Excellent pair, pure white A and blue B, 2 Dm, pleasingly close split. WDS uncertain, but there is 13% parallax range overlap, only 591 AU weighted separation, 1.8+0.9 Msol, and the radial velocity delta 2.5 is slightly less than the escape velocity 2.9, so it is possibly binary.
12h 16m 42.19s +39° 35' 34.5" P.A. 153.00 sep 5.9 mag 7.28,10.17 Sp A2.5V dist. 108.81 pc (354.94 l.y.)
STF1625 AB: 152; 125x; Bright pair, 1 Dm, wide, light yellow stars. WDS says parallax indicates physical, and there is 19% overlap of the parallax ranges, 1,232 AU weighted separation, 1.7+1.5 Msol, and the radial velocity delta 0.5 is less than the escape velocity 2.2, so it is probably binary.
12h 16m 11.66s +80° 07' 30.3" P.A. 217.00 sep 14.5 mag 7.24,7.78 Sp F1V+F3V dist. 497.51 pc (1622.88 l.y.)
STF1632 AB: 152; 125x: Light yellow A and blue B, well split, 2 Dm, a fine pair. WDS says proper motion indicates physical, and there is 11% overlap of the parallax ranges, 1,601 AU weighted separation, 2.7+1.2 Msol, but the radial velocity delta 3.9 exceeds the escape velocity 2.1, it might not be binary.
12h 20m 13.50s +37° 54' 07.7" P.A. 192.00 sep 10.1 mag 6.83,9.98 Sp K0III+F9V dist. 165.29 pc (539.18 l.y.)
STF1638 AB: 152; 125x: Faint pair, near equal, wide. WDS says this is not physical, and there is -30% parallax range overlap, it is not binary.
12h 24m 13.24s +43° 03' 37.1" P.A. 282.00 sep 8.3 mag 10.29,10.70 Sp F5
STF1641 AB: 152; 125x: Faint, near equal, pretty wide. WDS says not physical, and there is -97% parallax range overlap, it is not binary.
12h 24m 33.48s +37° 43' 31.1" P.A. 22.00 sep 16.6 mag 10.90,11.08 Sp G
STF1642 AB: 152; 200x: Excellent close pair, light orange stars about 2" and nearly 2 Dm. WDS uncertain, but there is -33% parallax range overlap, it is not binary.
12h 25m 45.00s +44° 44' 04.4" P.A. 180.00 sep 2.5 mag 8.80,9.40 Sp F5 dist. 244.5 pc (797.56 l.y.)
STF1645 AB: a52; 125x: Bright near equal white stars, wide. WDS grade 5 orbit, 3477-year period. In fact there is -1% overlap of the parallax ranges, though a small 433 AU weighted separation, 1.2+1.1 Msol, and the radial velocity delta 0.5 is less than the escape velocity 3.0. I think it's too soon to tell if this is binary
12h 28m 04.45s +44° 47' 39.5" P.A. 156.40 sep 9.7 mag 7.49,8.08 Sp F9V+KV dist. 43.61 pc (142.26 l.y.)
STF1646 AB: 152: 300x: Difficult for this aperture, B seen with averted vision and can then only barely hold it direct, 2 Dm from a very faint primary, closely split. WDS uncertain, but there is -61% parallax range overlap, it is not binary.
12h 28m 09.12s +36° 41' 02.1" P.A. 260.00 sep 5.6 mag 10.30,12.90 Sp F5
STF1656 AB: 152: 125x: Near equal, wide, faint. WDS says parallax indicates physical, but there is -30% parallax range overlap, it is not binary.
12h 33m 36.29s +38° 37' 14.0" P.A. 205.00 sep 26.7 mag 9.67,9.70 Sp G8III
STF1675 AB: 152; 125x: Wide, faint, slight magnitude difference. WDS uncertain, but there is no -98% parallax range overlap, it is not binary.
12h 44m 28.14s +34° 24' 58.5" P.A. 3.00 sep 29.8 mag 9.62,10.22 Sp G8III
STF1694 AB: 152; 125x: Very bright near equal, light orange stars, wide. WDS says physical, but there is no overlap of the parallax ranges, -6%, it is not binary.
12h 49m 13.80s +83° 24' 46.3" P.A. 324.00 sep 21.8 mag 5.29,5.74 Sp A1IIIsh dist. 178.89 pc (583.54 l.y.)
STF1720 AB: 152; 300x: Just split, significant delta mag, with seeing. WDS uncertain, but there is 6% parallax range overlap, only 590 AU weighted separation, 2.3+2.2 Msol, so it is likely binary.
12h 59m 12.92s +82° 56' 05.4" P.A. 329.00 sep 1.7 mag 8.91,9.18 Sp A0
STF1745 AB: 152; 125x: White A and wide companion seen with averted vision only, 2 Dm. WDS says not physical, and there is -94% parallax range overlap, it is not binary
13h 20m 17.23s +79° 26' 13.1" P.A. 182.00 sep 19.3 mag 8.92,11.60 Sp G5
STF1787 AB: 152; 200x: Very tough in poor seeing, since the primary is hazed most of the time. With averted vision I can sense a thickening in the haze which in better stretches resolves very faintly and close. WDS uncertain, but there is -12% parallax range overlap, it is not binary.
13h 40m 38.33s +81° 10' 51.0" P.A. 335.00 sep 2.0 mag 9.59,11.00 Sp F8 dist. 448.43 pc (1462.78 l.y.)
STF1851 AB: 152: 125x: Faint B seen with averted vision at first then can hold direct, closely split, 2 Dm. WDS says not physical, and there is -46% parallax range overlap, it is not binary.
14h 17m 11.18s +79° 51' 38.0" P.A. 329.00 sep 10.5 mag 9.78,12.30 Sp F8
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