Wednesday, August 12, 2020

11 august 2020

 Had a decent night last night, from about 9:15 to 11pm, when the marine layer started to move in.  Had some moments of surprisingly good seeing.  When it looked like the fog would roll in I slewed down to look at Saturn, very bright and with more moons than I could see in the 6-inch, but surprisingly with similar amounts of detail -- go figure.

POU3265 AB: 508; 205x: B seen with averted vision at first, and with some foveal coaxing I could hold it with direct vision.  ~1 delta mag and ~3"
17H 14M 44.25S +23° 56' 22.1" P.A. 170 SEP 3.9 MAG 11.81,13.00

STF 2139 AB: 508; 205x: Easy wide pair, ~3 delta mag, both are very light orange though B is a deeper color since it's fainter.  Not physical
17H 14M 09.65S +19° 18' 43.1" P.A. 335 SEP 8.3 MAG 9.60,11.70 SP K0 DIST. 198.02 PC (645.94 L.Y.)

HO 557 AB: 508; 205x: AK Her.  White A and much fainter orange B, interesting pair.  It is an uncertain pair yet WDS shows a period of 58.8 years, +/- 8 years.
17H 13M 57.81S +16° 21' 01.0" P.A. 323 SEP 4.5 MAG 8.57,12.00 SP F8 DIST. 106.27 PC (346.65 L.Y.)

COU 111 AB: 508; 533x: Clean, obvious split with apodising mask, not quite 1 delta mag.  Suspected elongation with 205x & hairline with apodising mask at 333x.  Very slightly orange-yellow stars. 
17H 13M 59.66S +21° 19' 10.0" P.A. 245 SEP 0.6 MAG 10.70,10.77

HU 488 AB: 508; 205x: Blue-white A and orange B, ~4", ~2 delta mag 
17H 14M 29.61S +19° 55' 52.3" P.A. 105 SEP 2.9 MAG 9.71,11.16 SP F2

POU3271 AB: 508; 205x: Near equal, pretty wide ~4", light yellow stars.  Not physical 
17H 15M 49.60S +23° 22' 05.8" P.A. 259 SEP 3.3 MAG 10.20,10.50

POU3272 AB: 508; 205x: B flashes an intense blue with averted vision, compared to A's white-yellow color.  I can barely hold B direct. Wide ~8".  Not physical
17H 15M 56.53S +24° 13' 39.4" P.A. 211 SEP 7.2 MAG 10.87,12.90

POU3273 AB: 508; 205x: Needed to use averted vision to see B, then can hold direct.  Wide ~10". Not physical
17H 15M 59.46S +24° 37' 19.7" P.A. 252 SEP 8.4 MAG 11.30,12.40

TDT 294 AB: 508; 333x: Hairline split, significant mag difference.  Faint pair. 
17H 16M 02.32S +17° 01' 37.6" P.A. 92 SEP 0.8 MAG 11.46,11.73

POU3277 AB: 508; 205x: Faint, but seen easily since they're wide, ~1 delta mag. Not physical
17H 17M 02.28S +24° 21' 10.3" P.A. 168 SEP 7.3 MAG 12.78,13.50

POU3278 AB: 508; 205x: Faint, but wide, ~1 delta mag. Physical
17H 17M 14.33S +24° 32' 08.9" P.A. 81 SEP 9.4 MAG 11.70,12.60

TDT 299 AB: 508; 667x: Very challenging.  Seeing became very good for this observation, good airy disks, and with averted vision a small condensation appeared within first diffraction ring, exceptionally close.  Seen well only with averted vision, there was just a slight brightening with direct.  Only one WDS observation.
17H 17M 59.69S +23° 16' 33.7" P.A. 64 SEP 0.5 MAG 10.83,11.17

J 452 AB: 508; 205x: Wide, nearly 2 delta mag, blue-white A 
17H 20M 47.25S +15° 21' 51.5" P.A. 300 SEP 2.8 MAG 10.80,12.20

COU 415 AB: 508; 1067x: Notched elongation at 533x & 667x.  I get an instantaneous split with perfect seeing at 1067x, it stays notched.  ~1 delta.  90 year period.
17H 22M 04.55S +23° 09' 40.4" P.A. 219.4 SEP 0.27 MAG 8.75,9.83 SP F5 DIST. 84.75 PC (276.45 L.Y.)
grafico orbita


COU 201 AC: 508; 205x: Bright light orange A and I notice B with averted vision, and then can hold it direct, wide, ~3 delta mag.  I did not notice AB, 0.5" 9.23/10.11, need to go back to it.
17H 22M 24.79S +20° 56' 03.7" P.A. 301 SEP 10.3 MAG 9.23,13.00 SP K0

TDT 322 AB: 508; 533x: B emerges with seeing to condense to a point outside A's diffraction, very large delta mag.
17H 22M 22.87S +14° 46' 59.7" P.A. 188 SEP 1.3 MAG 8.66,11.47 SP G5

COU 112 AB: 508; 205x: Just split, ~1 delta mag, good pair
17H 22M 48.68S +24° 27' 55.6" P.A. 24 SEP 1.4 MAG 10.04,11.80

STF 2157 AB-C: 508; 205x: Lovely ice blue and yellow pair, wide, ~2 delta mag.  AB is J 1248 0.1" and listed 9.0/9.0, I tried 667x and through I saw olive shape, but it could be confirmation bias.
17H 22M 52.73S +16° 27' 40.9" P.A. 208 SEP 3.4 MAG 8.92,10.17 SP G5 DIST. 118.62 PC (386.94 L.Y.)

A 2183 AB: 508; 333x: Clean split ~1", ~3 delta mag.  B is light orange, A is blue-white.  Physical.
17H 23M 30.10S +16° 54' 10.7" P.A. 137 SEP 1.2 MAG 7.67,10.60 SP A2V DIST. 178.57 PC (582.5 L.Y.)

J 1032 AB: 508; 205x: Near equal wide
17H 26M 48.25S +22° 37' 42.4" P.A. 351 SEP 4.1 MAG 11.30,11.60

TDT 952 AB: 508; 1067x: B appears with seeing within A's first diffraction, very faint, significant delta mag
18H 35M 54.54S +25° 41' 33.4" P.A. 178 SEP 0.7 MAG 11.36,11.59

HD 336513: 508; 333x: Not in WDS. B very faint, seen with averted vision only, ~4 delta mag, ~3"

BU 645 AB: 508; 205x: Pretty cream yellow-white A and slightly orange B, wide ~10", very large delta mag, >4 delta. 
18H 43M 14.48S +19° 27' 59.2" P.A. 305 SEP 9.3 MAG 7.29,12.10 SP B9.5IV-V DIST. 129.53 PC (422.53 L.Y.)

HU 325 AB: 508; 533x: Hairline split, ~1 delta mag, very fine pair
18H 44M 18.57S +20° 52' 17.8" P.A. 7 SEP 0.3 MAG 10.17,10.85 SP A0 DIST. 934.58 PC (3048.6 L.Y.)

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