Sunday, October 6, 2019

5 october 2019

Last night's seeing started out mediocre, so I used the 8" mask. After an hour or so it improved so I went full aperture. Despite a quarter moon and the usual marine haze, I made some really fine observations, which was great. Long session, too, from 9pm lasting until 12:30am. I could have kept going through the tiredness but needed to get up a little early the next morning. I dropped my barlow during the night, and it made a distressing clatter when it hit the edge of the telescope's concrete pad, but seems ok, fortunately. Cloudy tonight so I can find time to write these up:

A 2787 AB: 8" 333x: Seeing disappointingly bad, and transparency too... This one seen right away, 1 delta mag and about 4". Nice stars. [not physical]
19h 35m 47.31s +23° 33' 50.1" P.A. 111 sep 3.9 mag 9.90,11.40 Sp A0

STF 2548 AB: 8" 333x: Obvious pair, 1.5 delta mag ~10".
19h 36m 28.51s +25° 00' 04.4" P.A. 100 sep 9.4 mag 8.47,9.85 Sp A1V

STF 2551 AB: 8" 333x: Half delta mag, about 7", may be part of triple with very wide 1 more magnitude fainter C about 60 degrees away from B.
19h 37m 23.23s +22° 48' 51.0" P.A. 42 sep 6.8 mag 9.69,10.53 Sp F5

BRT 198: 8" 333x: Nice picked out if field between two other stars, middle of a string. B can be seen direct but best with some indirect vision. 1.5 delta mag, wide sept about 3"
19h 40m 06.65s +25° 15' 33.7" P.A. 154 sep 5.1 mag 10.19,11.60 Sp A2

A 272 AB: 8" 333x: ! Wow, I get the split, very close but split, obvious difference in magnitude, about 1 delta mag. Less than 1" sep. Impressed i could get it [CD is 15th mag and 1"!]
19h 40m 09.48s +26° 11' 23.4" P.A. 193 sep 1.3 mag 9.77,10.45 Sp A0

A 166 AB: 8" 333x: Close pair, 1/2 delta mag, elongates and splits with seeing. nice at this magnification.
19h 40m 10.51s +23° 30' 43.1" P.A. 241 sep 0.9 mag 9.24,9.54 Sp F2

A 2788 AB: 8" 533x: Elongated is the best I can get
19h 40m 19.26s +22° 50' 11.0" P.A. 328 sep 1.3 mag 9.79,10.90 Sp F2

STF 2577 AB: 8" 333x: Wide, one and half delta mag, light orange and blue stars 
19h 45m 12.27s +20° 54' 50.3" P.A. 262 sep 6 mag 8.43,9.56 Sp K0

DOO 11 AB: 8" 533x: Pretty pair of blue stars, one delta mag, 3" sep. Very nice! [not physical]
19h 48m 21.40s +24° 52' 56.8" P.A. 281 sep 2.8 mag 9.98,10.87 Sp K7

STF 2586 AB: 8" 533x: White and light blue, wide ~5", 1.5 delta mag 
19h 48m 34.30s +24° 57' 43.9" P.A. 226 sep 3.8 mag 7.56,9.28 Sp B8V dist. 358.42 pc (1169.17 l.y.)

KU 123 AB: Wide pair, one delta mag, bluish color [not physical] 
19h 48m 42.71s +25° 48' 28.4" P.A. 298 sep 21.6 mag 9.40,11.02 Sp M0

STF 2861 AB: 8" 533x: Pretty wide, magnitude is about half delta mag, not the full 1 delta mag as in SkyTools
22h 06m 01.25s +20° 48' 12.4" P.A. 221 sep 7.1 mag 8.14,8.64 Sp A4V dist. 187.62 pc (612.02 l.y.)

BRT 2527 AB: 8" 553x: Faint, pretty wide one delta mag bluish stars 
22h 10m 26.91s +19° 24' 34.8" P.A. 11 sep 5.6 mag 9.40,11.40 Sp A2

STF 2908 AB: 8: 533x: Yellow-orange and blue stars, wide, two delta mag 
22h 28m 11.55s +17° 15' 47.9" P.A. 114 sep 9 mag 7.74,9.68 Sp G9III dist. 462.96 pc (1510.18 l.y.)

STF 2910 AB: 20" 533x: White stars, one tinged with yellow the other orange, 1 delta mag, wide.
22h 28m 13.25s +23° 31' 57.2" P.A. 332 sep 5.8 mag 9.05,9.67 Sp K0IV dist. 51.71 pc (168.68 l.y.)

HO 475 AB: 20" 533x: Great! two plus one it must be. Tight near equal very well split, ~1", and another star about 1.5 fainter, rather wide about ten (AC).
22h 32m 45.51s +26° 24' 32.7" P.A. 306 sep 1.1 mag 9.34,9.62 Sp F5

COU 141 AB: 20" 533x Faint pair nicely split plenty of space. More near equal than one delta mag as in Sky Tools.
22h 34m 23.57s +25° 13' 58.4" P.A. 207 sep 1.5 mag 10.00,10.00

HU 982 AB: 20" 1067x: Persistent elongation at 533x and with barlow at 1067x. No resolution through, maybe an instant of notching 
22h 35m 12.10s +14° 36' 37.9" P.A. 219 sep 0.6 mag 7.81,9.40 Sp K2 dist. 347.22 pc (1132.63 l.y.)

STF 2934 AB: 20" 533x: 1.5 delta mag, well split, ~1.5", bluish white stars 
22h 41m 51.68s +21° 25' 53.0" P.A. 52.8 sep 1.38 mag 8.64,9.55 Sp G0 dist. 88.11 pc (287.41 l.y.)

TDT3676 AB: 20" 533x: Very faint, B on edge of direct vision, tightens up with critical focus as a blue dot, ~2.5" from A. 
22h 43m 13.03s +19° 12' 55.1" P.A. 349 sep 2 mag 10.01,11.61

HJ 301 AB: 20" 553x: Xi Peg. Picked out very faint B right away, a point in the glow but not the glare of the A star, and not in diffraction splike either.
22h 46m 41.58s +12° 10' 22.4" P.A. 94 sep 11.1 mag 4.20,12.40 Sp F7V+M2V dist. 16.3 pc (53.17 l.y.)

HU 985 AB: 20" 533x: ! Wow I got it! Light orange star and a very faint star just outside first diffraction, very subtle and tough
22h 47m 54.00s +12° 58' 36.2" P.A. 134.3 sep 0.66 mag 9.60,9.88 Sp G5

TDT3712 AB: 20" 533x: Faint, near equal, ~2". Very fine 
22h 48m 11.13s +18° 58' 10.3" P.A. 168 sep 1.8 mag 11.00,11.34

BU 847 AB: 20" 533x: 1 delta mag, ~7", nice pair 
22h 54m 36.61s +20° 19' 59.1" P.A. 36 sep 6.9 mag 9.03,10.36 Sp G5 dist. 64.89 pc (211.67 l.y.)

J 621 AB: 20" 533x: Faint near equal ~2", may be part of 2+1 system with 2x fainter star about 10" at near right angle (this is the AC pair).
22h 54m 45.21s +18° 11' 34.3" P.A. 145 sep 2.3 mag 12.61,12.74

HU 987 AB: 20" 533x: 20" 533x: Well separated one delta mag pair, nice 
22h 55m 43.52s +15° 46' 45.5" P.A. 75.9 sep 1.17 mag 9.23,9.73 Sp G5 dist. 72.99 pc (238.09 l.y.)

HEI 89 AB: 20" 533x: ! Very fine pair, very pretty not really that equal magnitude, ~2" 
23h 21m 23.99s +16° 22' 00.4" P.A. 68 sep 1.2 mag 10.49,10.85

J23228+1843A 20" 533x: Faint pair, wide, about half delta mag.

STF 3007 AB: 20" 533x: Yellow-white A and a bit orange B, ~6" and three delta mag, nice pair [Ba,Bb is TOK 704, 8.4 and 0.8", should have been noticeable! try again!]
23h 22m 48.67s +20° 33' 32.2" P.A. 94.8 sep 5.82 mag 6.74,9.78 Sp G2V+dK6 dist. 37.38 pc (121.93 l.y.)

STF 3021 AB: 20" 533x: Yellow and blue, two delta mag, wide 
23h 31m 24.65s +16° 13' 07.6" P.A. 308 sep 8.7 mag 8.06,9.26 Sp F8 dist. 220.26 pc (718.49 l.y.)

COU 243 AB: 20" 533x: Fine but definitely nicely split, a little different in mag, white stars
23h 31m 50.88s +21° 48' 15.2" P.A. 343 sep 0.9 mag 9.73,10.34 Sp G0

STF 3023 AB 20" 533x: White A and slightly red B, pretty well separated for 1.5" given the resolution of this scope.
23h 32m 24.68s +17° 24' 15.1" P.A. 280 sep 1.8 mag 7.23,9.11 Sp F4IV dist. 153.14 pc (499.54 l.y.)

STT 503 AB: 20" 533x: Near equal white stars, nicely separated, ~1"
23h 42m 02.13s +20° 17' 47.3" P.A. 134 sep 1 mag 8.26,8.63 Sp F8 dist. 108.46 pc (353.8 l.y.)

STT 504: 20" 533x: Yellow and blue stars, nicely wide separated, pretty 
23h 42m 31.33s +18° 39' 59.3" P.A. 176 sep 7.7 mag 7.39,10.33 Sp K0 dist. 202.02 pc (658.99 l.y.)

HEI 196 AB 20" 533x: Very fine pair, more near equal though noticiable difference in mag, well split but less than 1" 
23h 43m 25.34s +16° 52' 37.4" P.A. 166 sep 0.8 mag 10.62,11.17

STT 505: 20" 533x: Yellow A and kind of dull white-blue B, two delta mag, ~2.5"
23h 45m 29.33s +20° 24' 55.6" P.A. 60 sep 2.4 mag 6.75,9.61 Sp G8III dist. 159.24 pc (519.44 l.y.)

EGB 8 AB: 20" 533x: Near equal white ~1"
23h 46m 31.40s +17° 05' 13.0" P.A. 86 sep 1.2 mag 9.51,9.68 Sp F8 dist. 155.76 pc (508.09 l.y.)

TDT 4190 AB: 20" 533x: ! Amazing I got the split at 533x only, clean split, near equal, light orange stars. 
23h 46m 58.42s +17° 25' 51.2" P.A. 34 sep 0.6 mag 10.25,10.31 Sp F8

J 300 AB: 20" 533x: Half detla mag, wide, ~3-4"
23h 47m 02.62s +16° 15' 15.5" P.A. 15 sep 3.5 mag 10.60,11.10 Sp F5

HEI 91 AB: 20" 533x: ! Wow B star emerges with perfect seeing only, just within where A's diffraction ring was -- seeing needs to be so good the ring all but disappears, otherwise the ring would hide it. Great. 
23h 48m 38.11s +16° 21' 36.4" P.A. 153 sep 0.7 mag 10.10,11.90

BRT2518 AB: 20" 533x: Faint equal pair, blue, ~2.5" 
23h 56m 38.36s +18° 55' 14.2" P.A. 308 sep 3.2 mag 12.00,12.20

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