Seeing was forecasted to be good so I opened up the 20-inch full of expectation. Unfortunately, the seeing was too poor for full aperture, so I masked to 7-inches and had a productive session nonetheless. Mostly catching up on Struves in Hercules. It was cool and it started to dew a bit (though this might have been because I watered the lawn in the evening).
STF2102 AB: 178; 145x: Light yellow-orange A and very faint B seen averted vision only, wide. A similarly faint third star, AC, was on the opposite side and around 3x AB's separation, also seen with averted vision. WDS says AB is physical, however there is no overlap, -83%, of the parallax ranges, it is not binary.
16h 48m 33.52s +21° 23' 25.4" P.A. 275.00 sep 13.8 mag 8.43,11.29 Sp G5 dist. 174.83 pc (570.3 l.y.)
STF2030 AB: 178; 145x: Ice blue-white A and dull orange B, 2 Dm, well separated. WDS says it is physical, and there is 27% overlap of the parallax ranges, 1,088 AU weighted separation, 2.2+1.2 Msol, so it is possibly binary.
16h 12m 43.21s +40° 46' 54.1" P.A. 239.00 sep 5.7 mag 7.91,10.16 Sp A0 dist. 139.47 pc (454.95 l.y.)
STF2014 AB: 178; 145x: White A and dull orange B, 2 Dm, well separated. WDS says it's physical, and there is 23% parallax range overlap, 2,137 AU weighted separation, 2.2+1.4 Msol, so it is likely binary.
16h 08m 37.85s +40° 03' 11.2" P.A. 91.00 sep 8.4 mag 8.62,10.41 Sp F2 dist. 255.75 pc (834.26 l.y.)
STF2001 AB: 178; 145x: Faint pair, 1 Dm, wide. WDS uncertain, but there is 90% overlap of the parallax ranges, 2,325 AU weighted separation, 1.4+1.1 Msol, and the radial velocity delta 1.0 is less than the escape velocity 1.4, it is highly likely to be binary and someone should run an orbit.
16h 01m 13.23s +41° 50' 01.7" P.A. 168.00 sep 11.6 mag 10.01,10.98 Sp G
STF1991 AB: 178; 200x: Nice faint close pair, seen at 145x but better seen at 200x. WDS says it's physical, but there is no overlap, -14%, of the parallax ranges, so in spite of the close weighted separation it is not binary.
15h 57m 26.92s +41° 39' 42.9" P.A. 195.00 sep 3.0 mag 9.45,10.41 Sp F5 dist. 178.89 pc (583.54 l.y.)
STF2067 AB: 178; 400x: Very tough for this aperture, large delta magnitude and very closely split. WDS uncertain, but there is 3% parallax range overlap, 1.5+1.2 Msol, and the radial velocity 0.8 is less than the escape velocity 2.8, it is possible to be binary.
16h 33m 16.81s +38° 55' 20.6" P.A. 297.00 sep 2.9 mag 9.88,10.92 Sp F8 dist. 197.63 pc (644.67 l.y.)
STF2080 AB: 508; 635x: Light orange stars, <1", seen mostly as a slightly notched elongation, 5/10 seeing. WDS uncertain, and unfortnately no Gaia data for the companion.
16h 38m 35.62s +38° 19' 35.2" P.A. 56.00 sep 1.0 mag 8.96,12.70 Sp K0
STF2091 AB: 508; 800x: Hairline split at best seeing, white, near equal mag. WDS grade 4 orbit 888-year period. No Gaia data for the companion.
16h 42m 09.74s +41° 11' 42.9" P.A. 334.90 sep 0.3 mag 8.44,9.29 Sp F0 dist. 155.04 pc (505.74 l.y.)
17h 03m 16.78s +41° 53' 50.8" P.A. 151.00 sep 2.6 mag 8.11,10.55 Sp K0 dist. 147.06 pc (479.71 l.y.)
STF2168 AB: 508; 200x: Nearly 1 Dm, close pair, about 2" separation. WDS uncertain, but there is 59% overlap of the parallax ranges, only 764 AU weighted separation, 2.2+2.5 Msol, is it is very possible to be binary.
17h 26m 40.46s +35° 45' 55.3" P.A. 203.00 sep 2.3 mag 8.80,9.08 Sp F5 dist. 675.68 pc (2204.07 l.y.)
STF2178 AB: 178; 145x: Light yellow A and well separated 2 Dm B. WDS says parallax indicates physical, and there is 64% parallax range overlap, 1,421 AU weighted separation, 2.3+1.3 Msol, but the radial velocity delta 2.6 is more than the escape velocity 2.1, so it might turn out this is not binary.
17h 29m 28.15s +34° 56' 19.0" P.A. 129.00 sep 10.6 mag 7.29,9.05 Sp K0 dist. 128.53 pc (419.26 l.y.)
STF2203 AB: 508; 600x: Hairline split, near equal white stars, clean split with 600x. WDS uncertain, and there is -7% parallax range overlap, 2.3+2.1 Msol, so it is probable this is not binary.
17h 41m 13.81s +41° 39' 17.8" P.A. 292.00 sep 0.8 mag 7.72,7.81 Sp A4V dist. 158.23 pc (516.15 l.y.)
STF2213 AB: 508; 145x: 1 Dm wide white stars. WDS uncertain, but there is 23% parallax range overlap, only 507 AU weighted separation, 1.6+1.3 Msol, and the radial velocity delta 0.8 is less than the escape velocity 3.2, so it is possible it is binary.
17h 44m 50.81s +31° 07' 54.5" P.A. 327.00 sep 4.9 mag 8.15,8.96 Sp F8 dist. 124.69 pc (406.74 l.y.)
D16 BC: 508; 600x: Really excellent 2+1. STF2214 AB is an easy wide equal light orange pair, D16 BC is a significant delta, very close split, seen at 300x but better with 600x, hairline and clean with seeing. WDS uncertain, but there are 4% parallax range overlap, only 102 AU weighted separation, 1.0+0.8 Msol, so it is possible to be binary.
17h 43m 19.87s +43° 44' 36.1" P.A. 150.00 sep 0.9 mag 10.15,11.60 Sp K
STF2224 AB: 508; 145x: Orange A and blue B, wide, 3 Dm. WDS uncertain, but there is 32% parallax range overlap, 2,206 AU weighted separation, 4.0+1.6 Msol, but the radial velocity delta is 4.5, much more than the escape velocity 2.1, so it is likely not binary.
17h 45m 58.44s +39° 19' 21.0" P.A. 349.00 sep 7.9 mag 6.69,9.99 Sp K3III dist. 273.22 pc (891.24 l.y.)
STF2226 AB: 508; 145x: Faint, wide B, barely seen direct vision. WDS says not physical, and there is -97% overlap of the parallax ranges, it is not binary.
17h 46m 44.16s +35° 38' 27.4" P.A. 90.00 sep 12.7 mag 9.21,11.50 Sp F0
STF2229 AB: 508; 145x: Light yellow-orange stars, >1 Dm, wide. WDS says not physical, and there is -4% overalp of the parallax ranges, it is not binary.
17h 45m 51.74s +50° 11' 05.4" P.A. 340.00 sep 6.7 mag 8.31,10.30 Sp K2
STF2236 AB: 178; 145x: Brilliant white A and blue B, well separated, 2 Dm. WDS is uncertain, but there was 41% overalp of the parallax ranges, only 560 AU weighted separation, 1.9+1.2 Msol, so it is likely binary.
17h 50m 23.18s +35° 26' 14.9" P.A. 98.00 sep 3.4 mag 8.32,10.14 Sp G0 dist. 118.2 pc (385.57 l.y.)
STF2238 AB: 178; 300x: Quite faint, 1 Dm. WDS uncertain, and there is -21% parallax range overlap, it is not likely binary.
17h 50m 36.39s +37° 42' 11.6" P.A. 285.00 sep 2.4 mag 11.04,11.28
STF2242 AB: 178; 145x: Near equal white stars, well separated. WDS uncertain, but there is 78% overlap of the parallax ranges, only 481 AU weighted separation, 1.8+1.8 Msol, so it is very likely binary.
17h 51m 10.32s +44° 54' 28.0" P.A. 325.00 sep 3.4 mag 8.14,8.28 Sp F0 dist. 118.06 pc (385.11 l.y.)
STF2243 AB: 178; 300x: With seeing, very closely split, faint stars, near equal. WDS uncertain, but there is 35% parallax range overlap, only 171 AU weighted separation, 1.4+1.4 Msol, so it is likely binary.
17h 53m 16.19s +36° 05' 25.4" P.A. 39.00 sep 1.1 mag 9.19,9.40 Sp G5
STF2246 AB: 178; 145x: White 1 Dm, well separated. WDS uncertain, but there is 74% parallax range overlap, 818 AU weighted separation, 1.4+1.2 Msol, and the radial velocity delta 0.6 is less than the escape velocity 2.4, it is likey binary.
17h 55m 25.08s +39° 29' 53.5" P.A. 100.00 sep 5.5 mag 9.36,10.02 Sp G0 dist. 117.79 pc (384.23 l.y.)
STF2255 AB: 178; 145x: White and 2 Dm, can barely see B with direct vision. WDS says it is physical, but there is -81% parallax range overlap, it is not binary.
17h 56m 51.76s +41° 15' 05.5" P.A. 343.00 sep 9.1 mag 8.95,11.57 Sp F5 dist. 134.95 pc (440.21 l.y.)
STF2258 AB: 178; 145x: Good separation, significat Dm. WDS uncertain, and there is -41% parallax range overlap, it is not binary.
17h 56m 42.22s +48° 37' 08.5" P.A. 222.00 sep 2.0 mag 9.40,9.66 Sp G5
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