20 june 2022

Observed with the 20-inch, as seeing was supposed to be above average. But with the surroundings needing to cool off after a long hot day, there was still a lot of disturbance in the air, so I masked down to 7-inches. The powered ground board on this scope is still giving me trouble, and it seems there are more sections which are losing power. I have no choice now but to tear the whole scope down. It will be for the best because it needs maintenance.

Another frustration is SkyTools4. It eliminated the ability to sort columns within Realtime observing, making it much more difficult to narrow an observing list (like the long-term project lists I use). I checked on their website and the comments from the owner were really condescending, saying he removed the function because, in his opinion, an object not in optimal position is not worth observing. What an ass. I wanted to join his discussion forum to tell him off, but resisted. Who the hell is he to tell us how to observe? I found a rough work around but it is not to my satisfaction. I will probably shop for a different software.

I observed a few Struves but became increasingly frustrated with the scope power interruptions, and ended at 11pm. Very little darkness this time of year.

STFA 26 AB: 178; 125x: White stars, wide 3 Dm B.  WDS says proper motion indicates physical, and there is only (given their closeness to us) 6% parallax range overlap, 1,144 AU weighted separation, 1.8+0.8 Msol, so this might be binary.
14h 16m 10.07s +51° 22' 01.3" P.A. 33.00 sep 39.0 mag 4.76,7.39 Sp A7IV+K0V dist. 29.07 pc (94.83 l.y.)

STF1806 AB: 178; 125x: Faint stars, significant delta, pretty wide.  WDS says parallax indicates physical, but in fact there is no -10% parallax range overlap, it is not binary.
14h 08m 44.98s +48° 30' 24.5" P.A. 173.00 sep 13.1 mag 10.08,11.03 Sp F8

STF2093 AB: 178; 125x: A quick tumbling satellite went through the finder field as I was centering this star, like a dash line.  Pale yellow and bright A, and faint wide B.  WDS says not physical, and there is no -64% parallax range overlap, it is not.
16h 42m 53.76s +38° 55' 20.1" P.A. 266.00 sep 116.4 mag 3.58,11.72 Sp G8IIIb dist. 33.31 pc (108.66 l.y.)

STF1961 AB: 178; 125x: Very wide equal magnitude.  WDS says not physical, and there is no -97% parallax range overlap.
15h 34m 35.33s +43° 31' 28.6" P.A. 20.00 sep 28.6 mag 10.07,10.17 Sp K2

STF1920 AB: 178; 125x: Wide near equal.  WDS says proper motion indicates physical, but there is no -81% parallax range overlap, it is not binary.
15h 10m 48.36s +46° 51' 00.6" P.A. 109.00 sep 18.7 mag 9.92,9.98 Sp K0+K0 dist. 73.1 pc (238.45 l.y.)

STF1874 AB: 178; 125x: Light orange stars, wide, 2 Dm.  WDS uncertain, but there is no -87% parallax range overlap, it is not binary.
14h 42m 09.70s +49° 07' 27.4" P.A. 289.00 sep 27.2 mag 8.82,10.17 Sp G5 dist. 448.43 pc (1462.78 l.y.)

STF1843 AB: 178; 125x: Ice blue-white A, wide 2 Dm B.  WDS says proper motion indicates physical, and there is 52% parallax range overlap, 1,909 AU weighted separation, 1.7+1.1 Msol, so it is likely binary.
14h 24m 38.91s +47° 49' 50.0" P.A. 186.00 sep 19.8 mag 7.68,9.23 Sp F4V dist. 92.08 pc (300.36 l.y.)

STF1826 AB: 178; 125x: Light yellow stars, well separated, about 1 Dm.  WDS says not physical, but there is 62% parallax range overlap, only 802 AU weighted separation, 1.7+1.4 Msol, and the radial velocity delta 0.8 is less than the escape velocity, 2.6, so it certainly is binary.
14h 15m 12.13s +46° 58' 26.6" P.A. 310.00 sep 4.5 mag 8.94,9.69 Sp F8 dist. 176.99 pc (577.34 l.y.)

STF1809 AB: 178; 200x: Very faint B needed foveal coaxing to detect and hold, closely separated around 4", almost 3 Dm.  WDS uncertain, but there is 58% overlap of the parallax ranges, 1,199 AU weighted separation, 1.9+1.1 Msol, and the radial velocity delta 2.1 is equal to the escape velocity, so chances favor this being binary.
14h 08m 54.59s +46° 08' 03.4" P.A. 196.00 sep 4.3 mag 9.42,11.98 Sp G0 dist. 353.36 pc (1152.66 l.y.)

STF1815 AB: 178; 125x: More than 1 Dm, wide.  WDS says it's physical, but there is no overlap -89% of the parallax ranges, is it not binary.
14h 12m 36.22s +45° 11' 52.5" P.A. 151.00 sep 9.0 mag 9.58,10.92 Sp K0 dist. 170.07 pc (554.77 l.y.)

STF1814 AB: 178; 125x: White stars, significant delta, fairly wide.  WDS says parallax indicates physical, and there is 89% overlap of the parallax ranges, 1,304 AU weighted separation, 1.3+1.1 Msol, and the radial velocity delta 0.6 is less than the escape velocity 1.8, it is very likely binary.
14h 11m 00.99s +50° 15' 08.3" P.A. 256.00 sep 11.2 mag 9.25,9.83 Sp G5+G5

STF1929 AB: 178; 125x: Faint pair, 2 Dm, well separated.  WDS uncertain, but there is no -51% parallax range overlap, it is not binary.
15h 16m 38.79s +33° 39' 07.2" P.A. 8.00 sep 6.5 mag 9.79,11.80 Sp G5

STF1901 AB: 178; 125x: White and very wide 2 Dm B.  WDS says not physical, and there is no -91% overlap of the parallax ranges, it is not binary.  

15h 00m 57.70s +31° 22' 38.2" P.A. 184.00 sep 19.0 mag 8.71,10.55 Sp M dist. 1754.39 pc (5722.82 l.y.)