After several weeks of non-observing due to clouds and generally poor conditions, it was clear enough last night to observe with the 6-inch. A dozen wasps flew from under the tarp as I was removing it, so I looked around to see if a nest was being built -- I didn't see anything but hopefully there's not one in the mount. There was a haze around the low waxing gibbous moon, so I had a look at it from around 8:20-9:00pm. I noticed three very bright reflective mountain tops in the area of Schroter's Valley: the brightest was Mons Herodotus and there were two other peaks, closely separated, between it and Montes Agricola (which was not visible). They were bright and compact enough to do a star test. Seeing was not great but I was able to carry magnification to 200x. The addition of filters helped my eyes but seemed to rob me of detail. I was able to see four craterlets in Plato, through it was a couple days past best lighting.
I proceeded to observe the Struves in Delphinus, and completed the whole list in one go, closing up at around 10:40pm.
STF2662 AB: 152; 125x: Exceptionally fine, one delta faint b, nice close split, with high, steady and well seen. -15% PRO, 511 AU WS, 2.2+1.5 Msol, and the RVD 1.9 < EV 3.6. While the parallax doesn't support it being binary, an orbit should be tried all the same.
20h 18m 33.25s +10° 59' 31.5" P.A. 42.00 sep 2.0 mag 8.69,10.30 Sp A3
STF2664 AB: 152; 125x: Near equal white stars, wide. Seen faintly with the 60mm too. 38% PRO, 6,708 AU WS, 2.5+2.4 Msol, and the RVD 0.2 < EV 1.1, it is likely binary and needs an orbit.
20h 19m 38.48s +13° 00' 17.2" P.A. 322.00 sep 27.8 mag 8.07,8.34 Sp K0 dist. 131.75 pc (429.77 l.y.)
STF2665 A-BC: 152; 125x: Lovely white and 3 Dm B, well split. B not seen with the 60mm. -54% PRO, it is not binary.
20h 19m 21.16s +14° 22' 14.6" P.A. 12.00 sep 3.3 mag 6.88,9.55 Sp KIII+BV+ dist. 167.79 pc (547.33 l.y.)
STF2670 AB: 152; 125x: "L" shaped asterism, two wide near equal and a third at 90-degrees and half the separation. AB is the brighter pair, BC is the fainter. None of their parallax ranges overlap, they are not binary.
20h 22m 12.39s +16° 22' 49.4" P.A. 153.00 sep 30.0 mag 8.99,9.19 Sp A8V dist. 934.58 pc (3048.6 l.y.)
STF2673 AB: 152; 175x: Very fine close split, 1 Dm, split 125x but better seen with higher power. 59% PRO, 305 AU WS, 1.7+1.2 Msol, it is likely binary and needs an orbit.
20h 22m 43.76s +13° 20' 25.4" P.A. 326.00 sep 2.4 mag 8.29,9.75 Sp F2
STF2674 CD: 152; 175x: One of the faint (3 Dm) stars in the field as STF 2673. Not an impressive sight and probably measured just to check change in STF2673, it does not have Gaia parallax data.
20h 22m 48.91s +13° 20' 12.2" P.A. 1.00 sep 15.0 mag 8.60,11.43 Sp K0 dist. 279.33 pc (911.17 l.y.)
STF2679 AB: 152; 125x: Wide, with two other stars forming an equilateral triangle, each 1 Dm from the other. None of the stars share parallax ranges, they are not binary.
20h 24m 22.59s +19° 34' 30.0" P.A. 77.00 sep 24.7 mag 7.88,9.69 Sp A2V dist. 244.5 pc (797.56 l.y.)
STF2680 AB: 152; 125x: Wide near equal in a rich milky way stream. -49% PRO, it is not binary.
20h 24m 48.55s +14° 52' 05.4" P.A. 288.00 sep 16.2 mag 9.20,9.48 Sp A0V+B8V dist. 369 pc (1203.68 l.y.)
STF2686 AB: 152; 125x: Faint wide 1 Dm pair. -70% PRO, it is not binary.
20h 29m 44.26s +10° 17' 58.1" P.A. 278.00 sep 25.8 mag 9.36,10.80 Sp A0
STF2688 AB: 152; 125x: Faint, wide, 1 Dm. -87% PRO, it, is not binary.
20h 30m 48.26s +13° 47' 02.4" P.A. 175.00 sep 7.9 mag 9.35,10.41 Sp G0
STF2689 = STF2688 9.3/10.4 7.9" same as last
STF2690 A-BC: 152; 125x: Easy bright white wide pair, seen with low power in both the 6-inch and 60mm. Did not see DA 1 BC. No parallax data for the secondary star.
20h 31m 11.94s +11° 15' 33.7" P.A. 255.00 sep 17.8 mag 7.12,7.39 Sp B8V dist. 59.99 pc (195.69 l.y.)
STF2701 AB: 152; 125x: Fine, slightly unequal light orange stars, split with 125x but better seen 175x. Suspected at 90x with the 60mm. 92% PRO, 260 AU WS, 1.5+1.7 Msol, it is likely binary and needs an orbit.
20h 36m 58.85s +12° 02' 55.3" P.A. 221.00 sep 2.1 mag 8.32,8.59 Sp G5 dist. 117.65 pc (383.77 l.y.)
STF2703 AB: 152; 125x: "L" shaped asterism, all widely separated. AB share 9% parallax ranges, wide 8,506 AU WS, 2.7+2.6 Msol, so there is a slight chance they are binary and an orbit should be tried.
20h 36m 49.41s +14° 43' 42.4" P.A. 290.00 sep 25.1 mag 8.35,8.42 Sp A5 dist. 440.53 pc (1437.01 l.y.)
STF2704 AB-D: 152; 125x: Large delta magnitude but very wide, not much to say. A missing parallax in Gaia.
20h 37m 32.87s +14° 35' 42.7" P.A. 317.00 sep 47.8 mag 3.68,11.40 Sp F5IV dist. 30.93 pc (100.89 l.y.)
BU151 AB: 152; 300x: Rotanev, Beta Del. Tough, seems a slight olive shaped elongation, but most of the time appears single, even with highest magnification. Burnham obviously discovered this at apastron with his 6-inch...
20h 37m 32.87s +14° 35' 42.7" P.A. 218.00 sep 0.2 mag 4.11,5.02 Sp F5IV+F2V dist. 30.93 pc (100.89 l.y.)
STF2713 AB: 152; 125x: Faint, close, near equal pair, best seen low power. 41% PRO, 3,084 AU WS, 2.5+2.5 Msol, and the RVD 0.0 < EV 1.7, it is likely binary and needs an orbit.
20h 40m 55.07s +10° 34' 29.1" P.A. 62.00 sep 5.1 mag 9.80,9.80 Sp B9
STF2715 AB: 152; 125x: White 1 Dm, wide. 32% PRO, 1,063 AU WS, 1.5+0.8 Msol, but the RVD 2.5 > EV 2.0, it might not be binary but an orbit should be tried,
20h 41m 46.01s +12° 31' 07.1" P.A. 2.00 sep 12.4 mag 7.80,10.22 Sp F8 dist. 92.42 pc (301.47 l.y.)
STF2718 AB: 152; 125x: Near equal, white, wide, also seen with 60mm. 41% PRO, 1,509 AU WS, 2.0+1.9 Msol, it is possibly binary and needs an orbit tried.
20h 42m 33.47s +12° 43' 41.9" P.A. 87.00 sep 8.5 mag 8.28,8.39 Sp F5 dist. 144.51 pc (471.39 l.y.)
STF2720 AB: 152; 125x: Slightly unequal white stars, close with low power. 29% PRO, only 397 AU WS, 1.2+1.1 Msol, and the RVD 0.3 < EV 3.2, it is probably binary and needs an orbit.
20h 43m 27.91s +16° 56' 41.9" P.A. 177.00 sep 4.0 mag 9.22,9.56 Sp F8 dist. 100.5 pc (327.83 l.y.)
STF2722 AB: 152; 125x: Slightly unequal white stars, nice split. -16% PRO, 1,258 AU WS, 1.9+1.6 Msol, RVD 0.5 < EV 2.2. Stelle Doppie calls it physical but the parallax is against it, it is not likely binary.
20h 43m 38.82s +19° 43' 40.7" P.A. 306.00 sep 7.5 mag 8.32,8.94 Sp G5 dist. 239.23 pc (780.37 l.y.)
STF2723 AB: 152; 250x: Hairline split with seeing and high magnification only, more than a little unequal. SOC grade 4 orbit 782-years. But there is -9% PRO, 171 AU WS, 2.5+1.8 Msol, so it might or might not be binary and needs to be watched.
20h 44m 54.58s +12° 18' 45.6" P.A. 140.00 sep 1.0 mag 7.01,8.30 Sp A3IV dist. 209.21 pc (682.44 l.y.)
STF2725 AB: 152; 125x: Faint pair, nearly 1 Dm, well split. -12% PRO, 226 AU WS, 1.1+0.9 Msol, it is probably not binary.
20h 46m 13.31s +15° 54' 26.4" P.A. 12.00 sep 6.2 mag 7.54,8.20 Sp K0 dist. 36.46 pc (118.93 l.y.)
STF2727 AB: 152; 125x: Very pretty light yellow-orange stars, nearly 1 Dm, well split, also seen in the 60mm at 40x. 8% PRO, 329 AU WS, 2.3+1.8 Msol, RVD 1.4 < EV 4.7, it likely is binary and has a SOC grade 4 orbit, 3249-year period.
20h 46m 39.50s +16° 07' 27.4" P.A. 266.00 sep 8.8 mag 4.36,5.03 Sp K1IV+F7V dist. 38.73 pc (126.34 l.y.)
20h 51m 03.77s +06° 23' 14.1" P.A. 333.00 sep 3.3 mag 8.43,8.57 Sp K1III
STF2733 AB: 152; 125x: Wide, near equal, white. 78% PRO, 5,377 AU WS, 1.6+1.6 Msol, RVD 0.1 < EV 1.0, it likely is binary and needs an orbit.
20h 52m 42.97s +07° 19' 47.6" P.A. 145.00 sep 40.2 mag 8.39,8.58 Sp A
STF2734 AB: 152; 125x: Wide unequal. -97% PRO, it is not binary.
20h 54m 03.68s +13° 06' 14.8" P.A. 227.00 sep 24.4 mag 9.39,9.82 Sp G0
STF2735 AB: 152; 175x: Excellent light orange and nearly 2 Dm blue B, closely split with 125x, better seen 175x. Suspected 40x in the 60mm and tentatively, very finely split with 90x, B appeared as the smallest blue dot with seeing. 7% PRO, 224 AU WS, 1.8+2.5 Msol, it is possibly binary and needs an orbit tried.
20h 55m 40.64s +04° 31' 57.7" P.A. 282.00 sep 2.0 mag 6.45,7.54 Sp G6III-IV dist. 141.64 pc (462.03 l.y.)
STF2736 AB: 152; 125x: Well split, unequal. 61% PRO, 1,058 AU WS, 2.1+1.6 Msol, RVD 0.9 < EV 2.5, it is likely binary and needs an orbit.
20h 56m 43.74s +12° 59' 33.8" P.A. 219.00 sep 5.3 mag 8.34,9.36 Sp F2 dist. 294.99 pc (962.26 l.y.)
STF2738 AB: 152; 125x: Wide, significant delta. 6% PRO, 5,449 AU WS, 3.2+2.5 Msol, it might be binary and needs an orbit.
20h 58m 32.23s +16° 26' 12.2" P.A. 254.00 sep 15.0 mag 7.51,8.57 Sp F5V+A0 dist. 100.4 pc (327.5 l.y.)
STF2750 A-BC: 152; 125x: Wide, 1 Dm. -90% PRO, it is not binary.
21h 05m 02.23s +12° 43' 20.5" P.A. 280.00 sep 16.0 mag 8.96,10.40 Sp K0 dist. 128.7 pc (419.82 l.y.)
STF2754 AB: 152; 125x: Wide, 1 Dm. -95% PRO, it is not binary.
21h 06m 11.70s +13° 10' 56.8" P.A. 298.00 sep 29.7 mag 9.16,10.60 Sp K5
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