18 april 2021

I was hopeful last night for good seeing as was in the forecast, only to have my hopes dashed...  Stars still appeared bloated and flickering at full aperture, so I spent most of the time at 7-inches.  There were a couple nice Kruger pairs, ~10th magnitude near equal with good separation -- he seemed to find these pairs regularly.  And a few others.  Seeing is forecasted to be even worse this week.  I've pretty much tapped out my list of <15" pairs in Leo and other convenient constellations, I may make a new list of >15" pairs visible with the 7-inch and maybe have a more productive night, it at least with brighter and easier pairs.

KU 38 AB: 178; 205x: Faint pair, but wide split, near equal, blue-white stars.  Physical.
11h 27m 13.99s +19° 07' 41.3" P.A. 54.00 sep 6.3 mag 10.59,10.67 Sp F6+F9

HO 535 AB: 178; 205x: Very faint B is seen with averted vision only, well separated ~3".  Physical.
12h 02m 29.07s +21° 44' 48.5" P.A. 147.00 sep 2.9 mag 8.69,11.50 Sp F9 dist. 74.18 pc (241.98 l.y.)

STF1615 AB: 178B: 178; 205x: Very light orange A and very much fainter B which appears with averted vision and I can then just hold it direct, well separated.  Physical.
12h 20m 04.86s +13° 51' 18.2" P.A. 104.00 sep 3.6 mag 7.11,10.53 Sp G9III dist. 143.27 pc (467.35 l.y.)

BU 1324 AB: 508; 205x: Well split ~3", 1 delta, yellow-orange stars.  Physical.  Based on the designation number I assume it was discovered with the 40-inch.
12h 29m 30.02s +29° 30' 45.8" P.A. 224.00 sep 2.4 mag 9.78,10.64 Sp G5

STF1696 AB: 178; 205x: Fine pair if a little dim, blue-white stars, half delta, wide ~4"
12h 57m 24.25s +30° 22' 15.5" P.A. 204.00 sep 3.7 mag 9.38,9.51 Sp F4 dist. 197.24 pc (643.4 l.y.)

STF1700 AB: 178; 205x: White, wide, very faint B, ~7" and 2 delta.  Not physical.
12h 58m 43.08s +27° 07' 10.2" P.A. 84.00 sep 7.4 mag 8.94,10.47 Sp G5 dist. 222.72 pc (726.51 l.y.)

BGH 46 AB: 178; 205x: Super-wide pair even in the finder, and I am very surprised to see it is listed as physical, at least as proper motion is concerned.  The close pair HDS1862Aa-Ab I thought I saw but it is too fleeting, seeing not supporting higher magnification. ** When I input the Gaia DR3 data, which includes parallax, into Harshaw's Plot Tool, it confirms there is overlap in the weighted distance but the weighted separation of the pair is 19,121 AU, which means this is not a physical pair.  I may write a paper!
13h 16m 32.26s +19° 47' 07.0" P.A. 58.00 sep 202.9 mag 6.46,7.59 Sp A3+A2 dist. 85.4 pc (278.57 l.y.)
13h 16m 32.26s +19° 47' 07.0" P.A. 262.00 sep 0.4 mag 6.56,9.69 Sp F0V dist. 85.4 pc (278.57 l.y.)

BU 237 AB: 178; 205x: Excellent pair, B visible with seeing as a very fine point, well separated ~4" from A, ~3 delta, very fine.
13h 26m 53.35s +14° 22' 21.7" P.A. 213.00 sep 3.1 mag 8.50,10.62 Sp G5 dist. 81.5 pc (265.85 l.y.)

KR 41 AB: 178; 205x: Faint pair, well separated, 1 delta, B just visible direct and it brightens considerably with averted vision.  Not Physical
13h 02m 38.02s +56° 25' 11.1" P.A. 332.00 sep 3.6 mag 9.70,10.10 Sp G5

STF1732 AB: 178; 205x: Wide AB and I suspect BC with the 7-inch mask, and with 20-inch I have a stronger sense of it but it doesn't resolve to a point, it's more haze, ~2".  Physical.

KR 42 AB: 178; 205x: Faint near equal, nicely split ~4".  Physical.

13h 35m 24.70s +59° 54' 58.7" P.A. 217.00 sep 3.7 mag 10.38,10.55