Wednesday, November 29, 2017

yet more doubles in cygnus

Had a couple of nights with decent seeing in the back yard, though with some average transparency.  There was a haze blowing in front of the waxing moon, and in fact I was shut down early tonight by some thin clouds or marine layer coming in.  I'm working my last section of printed finder charts for doubles in Cygnus, which is still hanging on in the early evening; though I did poke around in Cassiopeia too.  Big Blue, 553x unless otherwise noted.

11/27:

STF 3062: 277x Light yellow and a more orange yellow B, 3-4", 1 delta mag.
00H 06M 15.81S +58° 26' 12.5" P.A. 359.7 SEP 1.55 MAG 6.42,7.32 SP G3V DIST. 21.48 PC (70.07 L.Y.)

STF 3057: 277x.  White with 2 delta mag blue-white B, 4-5".
00H 04M 54.98S +58° 31' 55.8" P.A. 297 SEP 3.8 MAG 6.70,9.30 SP B3V DIST. 840.34 PC (2741.19 L.Y.)

There's a chain of doubles going south from Beta Cas, a pretty finder view, like stepping stones.  One closest to Beta Cas is Ary 8, which is actually a triple system of wide pairing.

NGC 7789: Open cluster.  Large, loose OC seems like there is a hole in the middle.  Many faint stars and a rim of brighter stars to the east. 

STF 3049: 277x.  White A to slight yellow B, 3-4", 1.5 delta mag. [AB seen; AC and BC? fainter and wide -- how can C be paired with both A and B?]
23H 59M 00.53S +55° 45' 17.8" P.A. 328 SEP 3.4 MAG 4.99,7.24 SP B1V DIST. 1388.89 PC (4530.56 L.Y.)

STT 9: 277x, Very close, in diffraction, ~1.5".  Much fainter 3 delta mag B, a pin prick resolved with seeing. [AB seen, 5 stars in system]
00H 26M 12.04S +56° 46' 45.2" P.A. 51 SEP 2.1 MAG 6.87,9.67 SP G3III DIST. 180.18 PC (587.75 L.Y.)

A jet plane flew through the eyepiece view, flashing lights...

T Cas, pretty light orange

Bright satellite (ISS) travelling NNW, fast, bright as the lights of a jet it seemed to follow headed to Oakland airport...

Lambda Cas = STT 12: Not sure I have the correct star, maybe out of round?  A could of faints very wide.  [Probably not seen...]
00H 31M 46.32S +54° 31' 20.3" P.A. 230.8 SEP 0.16 MAG 5.33,5.62 SP B8V+B9V DIST. 115.74 PC (377.54 L.Y.)

STF 60: Nice yellow pair.  A is a ruddy / tainted (pee colored) yellow, B is cleaner. [10 stars in system? really?  I thought this was a high proper motion pair; is it like a swarm of bees?]
00H 49M 06.29S +57° 48' 54.7" P.A. 325 SEP 13.32 MAG 3.52,7.36 SP G1V+M DIST. 5.95 PC (19.41 L.Y.)

BU 396: !  Suspected in 277x, confirmed with 553x, Small much fainter blue B in A's diffraction -- yellow-white, 1", 3 delta mag.
01H 03M 37.01S +61° 04' 29.4" P.A. 67 SEP 1.3 MAG 6.06,8.62 SP F0II DIST. 613.5 PC (2001.24 L.Y.)

BU 258: ! White pair, B resolves with seeing, 2", 2-3 delta mag. [AB seen; there is an AC, LV 14, 12th mag, wide]
01H 13M 09.82S +61° 42' 22.3" P.A. 262 SEP 1.5 MAG 6.50,8.80 SP B9V DIST. 201.61 PC (657.65 L.Y.)

All of this in nearly the same FOV!:
STF 115: !  553x Peanut, near equal. (VERY good, 0.4"!  01H 23M 21.27S +58° 08' 35.6" P.A. 157.2 SEP 0.42 MAG 7.10,7.30 SP F5V DIST. 58.82 PC (191.87 L.Y.)
Delta Cas 553x marked as double but don't resolve except faint & wide stars [No wonder, faint & super wide] 01H 25M 48.95S +60° 14' 07.0" P.A. 58 SEP 110.1 MAG 2.66,11.89 SP A5III-IVV DIST. 30.48 PC (99.43 L.Y.)
V 465 a pretty orange
NGC 457 OC a loose, moderately rich cluster with a moderate magnitude range, faint stars crossed by a dozen brighter which form a hoot and an arc.

Arn 55: Picking up a pinpoint in A's diffraction, very faint with seeing, <1", 3-4 delta mag, white. [Probably not seen, only 0.3" but maybe?]
01H 44M 17.96S +57° 32' 11.8" P.A. 305 SEP 0.34 MAG 6.29,8.68 SP A3V DIST. 84.96 PC (277.14 L.Y.)

M103: Triangular, red star in the middle; rather a poor cluster.  Seen as a string of three stars in the finder; how did Messier see it?

11/29: 553x throughout, shut down early due to clouds

HO 600: Can see moments of steady disk, but no B.  Could be the quarter moon?  Too much delta mag for the sky
21H 01M 47.44S +44° 11' 13.6" P.A. 96 SEP 1.9 MAG 6.70,10.90 SP AM DIST. 70.13 PC (228.76 L.Y.)

STF 2748: Pretty orange with 3 delta mag blue B [no record found in Stelle Doppie?]

STF 2747: Light orange near equal, ~5"
21H 02M 21.92S +37° 39' 14.0" P.A. 266 SEP 4.7 MAG 8.45,8.66 SP G5 DIST. 44.39 PC (144.8 L.Y.)

HO 283: See three stars faintly, pop with averted vision, in a line with A.  But not the close faint pair, need the 20-inch! [Might have seen AB, but Aa,Bb is 0.8 and 6.54/12.00]
21H 11M 03.77S +36° 17' 58.5" P.A. 211 SEP 20.8 MAG 6.54,12.10 SP B1VP DIST. 1149.43 PC (3749.44 L.Y.)

STT 433: Two faint / direct vision / stars, wide, white, 3rd on opposite side. [AB, AC are 10.8 and 9.95 and 219 and 184 PA, what I saw on one side; BC is also listed as a pair... Interesting orbits]
21H 17M 55.07S +34° 53' 48.8" P.A. 219 SEP 15.2 MAG 4.36,10.80 SP B2VNE DIST. 196.85 PC (642.12 L.Y.)

STF 2760: Slightly yellow pair, 0.5 delta mag, wide ~5" [AB seen, 7 stars in system]
21H 06M 46.78S +34° 07' 56.2" P.A. 33 SEP 5.1 MAG 7.90,8.74 SP A4III DIST. 137.17 PC (447.45 L.Y.)

HO 153: ! Faint, split with seeing, 1" 1 delta mag. 
21H 17M 39.56S +33° 45' 29.8" P.A. 128 SEP 1 MAG 8.50,9.55 SP A5 DIST. 128.7 PC (419.82 L.Y.)

HO 286: Ha! not a chance, 0.2"...
21H 19M 22.18S +38° 14' 14.9" P.A. 237 SEP 0.2 MAG 6.60,6.60 SP F1II DIST. 662.25 PC (2160.26 L.Y.)

STF 2785: Suspect 3x fainter in the diffraction when seeing stills.  Needs a steadier, darker night. 
21H 17M 36.79S +39° 44' 46.1" P.A. 233 SEP 2.9 MAG 7.94,9.94 SP F2V DIST. 222.72 PC (726.51 L.Y.)

S 790: 3x fainter, very wide. [AB seen. 4 stars in system]
21H 25M 47.02S +36° 40' 02.5" P.A. 29 SEP 34.7 MAG 5.89,11.71 SP B0IB DIST. 2777.78 PC (9061.12 L.Y.)

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