Tuesday, October 22, 2019

21 october 2019

Last night's seeing was forecast to be pretty good, but turned out it was ok from 9pm to 10pm but then it was lost. Continued to be plagued with poor transparency, with a low light fog in the air. Tried my best, but only observed for ninety minutes. All the same, a couple of nice finds.

Also I really need to do my Super Calibration on the Argo. I find myself passing over fainter pairs so I could land on a brighter star, since I know I need to adjust my slew slightly in order to find the target star. If my pointing accuracy would reliably land a target in my tiny 0.15* FOV, then I would have confidence to slew to non-obvious and faint pairs...

STT 454 AB: 20" 533x: Bright white A and about 3 delta mag bluish B, pair, ~7"
21h 56m 04.91s +24° 20' 23.6" P.A. 278 sep 7.4 mag 7.97,10.04 Sp A0 dist. 271.74 pc (886.42 l.y.)

A 303 AB: 20" 533x: ! Slightly orange A star and very faint blue B, ~4", just seen direct vision. Very nice.
21h 55m 29.91s +27° 23' 35.6" P.A. 52 sep 2.3 mag 9.22,11.63 Sp G5 dist. 207.47 pc (676.77 l.y.)

ES 526 AB: 20" 533x: Light orange A star and B noticed with averted vison, flashes out clearly. Suspected with direct vision but not steady. Pretty wide ~7"
21h 56m 32.33s +26° 13' 04.1" P.A. 95 sep 9.6 mag 9.25,13.40 Sp K7

TDT3270 AB: 20" 1067x: Poor transparency hurting me, but in the elongated haze two separate points flash momentarily, very brief and very small, hairline.
21h 58m 43.85s +22° 57' 57.9" P.A. 270 sep 0.5 mag 10.81,10.87

J 2365 AB: 20" 533x: Pretty, near equal white stars ~6".
22h 10m 48.95s +21° 51' 18.9" P.A. 261 sep 5.5 mag 11.52,11.50

HO 294 AB: 20" 533x: ! When I first viewed the seeing was very rough, but after a couple of minutes it settled down so I could see a beautiful orange-yellow star resolved with a very faint reddish B ~3", nice hard points.
22h 37m 35.20s +27° 26' 22.8" P.A. 59 sep 1.9 mag 8.20,10.98 Sp F6V dist. 113.25 pc (369.42 l.y.)

TDT3670 AB, 20" 533x: Faint pair less than half delta mag, ~3"
22h 42m 48.92s +13° 30' 52.4" P.A. 309 sep 2.3 mag 11.44,11.80

STF 2941 AB: 20" 533x: Very pretty yellow and blue stars, ~3 delta mag, wide [not physical]
22h 45m 58.41s +19° 15' 00.9" P.A. 258 sep 14.8 mag 7.62,10.36 Sp K0

BRT2509 AB: 20" 533x: Near equal faint pair, ~5". Nice.
22h 49m 52.44s +19° 20' 10.3" P.A. 208 sep 4.5 mag 10.90,11.10

TDT 3774
AB: 20" 1067x: Very moderately elongated, but marginal since seeing is not holding up
22h 54m 08.44s +22° 36' 21.9" P.A. 281 sep 0.4 mag 9.65,9.82 Sp K2

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