Monday, October 19, 2020

18 october 2020

I gave my new camera a try last night, but it was a bit of a fail.  I could only see 1st magnitude stars (Altair) on the laptop screen, and when I tried to run captures there were no stars.  That won't work.  I'm trying to figure out what I'm doing wrong.

After 9pm I moved back to visual doubles.  Seeing was supposed to be better but it wasn't -- so I could not really push the limits.  It's forecasted to be excellent tonight, we'll see.

POU 5454 AB: 508; 205x: A is a relatively bright light yellow and B a fine point, much fainter, well separated.
21H 39M 44.20S +24° 56' 56.8" P.A. 87 SEP 7 MAG 8.49,11.60 SP K0III

J 287 AB: 508; 205x: Fine pair, well separated ~1 delta mag.  Not physical
21H 41M 56.43S +16° 16' 56.8" P.A. 348 SEP 3 MAG 11.30,11.60

BRT 2499 AB: 508; 205x: One delta, well separated
21H 43M 06.40S +21° 57' 16.9" P.A. 207 SEP 4.8 MAG 10.00,10.80

POU 5468 AB: 508; 205x: B very faint indeed, seen with averted vision only, wide
21H 43M 52.01S +24° 07' 24.5" P.A. 295 SEP 8.5 MAG 8.62,12.70 SP K0 DIST. 312.5 PC (1019.38 L.Y.)

HU 1656 AB: 508; 205x: Wonderful sharp close pair, half delta mag, blue-white stars, ~2" separation
21H 45M 53.00S +21° 54' 29.5" P.A. 305 SEP 2.2 MAG 11.33,11.31

L 36 AB: 508; 205x: In the field is a pair of bright white very wide stars, L 36 is a faint echo of these, much closer together, hanging over one of the bright stars.  While a pretty contrast, it is not physical.  Lewis of Greenwich Observatory.
21H 45M 57.78S +25° 32' 26.8" P.A. 295 SEP 4.7 MAG 11.40,11.90
 
HO 608 AB: 508; 533x: Difficult hairline split at small scale with 333x, easy with 533x, with seeing, white stars, >1 delta mag
21H 46M 48.94S +27° 18' 09.7" P.A. 130 SEP 0.6 MAG 8.98,9.90 SP F2

A 300 AB: 508; 205x: Lovely close pair, ~1 delta mag, ~2".
21H 47M 26.09S +28° 34' 26.4" P.A. 252 SEP 2.3 MAG 9.09,10.50 SP A2

HU 378 AB: 508; 667x: Notched elongation with, obvious magnitude difference, but no better resolution.
21H 48M 03.49S +20° 59' 39.1" P.A. 297 SEP 0.2 MAG 9.00,9.80 SP G5

POU 5518 B-CD: 508; 205x: BU 1306 AB and A-CD are nice, each ~30" separated and ~30 degrees difference in PA.  CD is about another 30 degrees in difference in PA, but much tougher since it's considerably fainter and half the separation ~15".  It emerges from bright A with seeing.  BU 1306 CD is not possible, 13.6/14.0 1.9", and uncertain if it's physical.  All the other pairs are not physical!
POU5518B,CD: 21H 49M 26.61S +23° 34' 18.3" P.A. 208 SEP 17.5 MAG 13.20,13.00
BU 1306AB 21H 49M 28.58S +23° 34' 02.1" P.A. 302 SEP 32 MAG 8.43,13.20 SP K0
BU 1306A,CD 21H 49M 28.58S +23° 34' 02.1" P.A. 272 SEP 34.5 MAG 8.43,13.40 SP K0 

COU 135 AB: 508; 205x: Faint wide secondary.  Not physical. 
21H 49M 30.62S +22° 01' 49.5" P.A. 302 SEP 9.2 MAG 11.74,12.50

ES 523 AB: 508; 205x: Near equal well separated.  Physical.
21H 53M 40.52S +27° 01' 44.2" P.A. 95 SEP 6.2 MAG 10.90,11.12

BU 1144 BC: 508; 667x:  Eta Peg. A is brilliant, BC easily seen in its glow and at 667x I detect it's PA as perpendicular to the PA of two two other fainter stars further out which all together form a V shape.  This is a detection of elongation in the BC pair which is 0.2".  There are 11 stars in the system, 
22H 42M 57.46S +30° 14' 42.9" P.A. 74 SEP 0.2 MAG 10.60,10.60 SP G5

TDT3789 AB: 508; 1067x: notched elongation snowman, slight mag difference 
22H 55M 31.50S +26° 37' 01.7" P.A. 238 SEP 0.5 MAG 10.11,10.25

COU 240 AB: 508; 533x: Hairline split with 333x, wider with 533x, split with seeing and apodising  mask to clean up A's bright white significant delta mag
22H 56M 23.71S +22° 57' 21.2" P.A. 289 SEP 0.8 MAG 7.73,8.82 SP F0 DIST. 185.53 PC (605.2 L.Y.)

STF 2957 AB: Dull yellow stars, ~2 delta mag, wide.
22H 56M 23.64S +17° 27' 08.6" P.A. 224 SEP 4.6 MAG 9.20,10.88 SP K0 DIST. 34.15 PC (111.4 L.Y.)

STT 483 AB: 508; 333x: Elongation, very subtle notch.  Physical with 249 year period. 
22H 59M 11.82S +11° 43' 43.8" P.A. 31.9 SEP 0.43 MAG 6.11,7.27 SP A8III DIST. 94.34 PC (307.74 L.Y.)
BU 850 AB: 508; 205x: B is faint but not difficult, well separated, much brighter blue-white A.  Physical.
23H 00M 19.30S +14° 00' 03.1" P.A. 121 SEP 3.2 MAG 8.34,11.18 SP AM DIST. 166.11 PC (541.85 L.Y.)

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