Saturday, May 30, 2020

26 may 2020

This was another long night of observing, from 10pm to 1am, with many objects found. I set up my 6-inch f5 for some sweeping, with a higher tripod, but I found that the movements are just too rough to continue with it, so I decided to buy a true alt-az mount. The night was warm with light dew, and just a joy to be out.

BU 924 AB: 508; 333x: 31 Vir. Bright white A and slightly red B, large mag difference, ~2.3" separation
12H 41M 57.16S +06° 48' 23.9" P.A. 40 SEP 4.1 MAG 5.57,10.10 SP A2V DIST. 71.53 PC (233.33 L.Y.)

HO 54 BC: 508; 333x: AB is bright yellow white, and B is far separated 15", but B is also a pair of near equal 10th mag stars, ~2" separated
12H 41M 55.93S +09° 52' 46.9" P.A. 141 SEP 2.3 MAG 11.80,11.80

A 1782 AB: 508; 333x: Very fine reddish stars, large delta mag, B visible direct vision. ~2" separation, ~4 delta mag. It's part of a string of brighter seventh and eighth magnitude stars.
12H 41M 50.16S +07° 23' 48.8" P.A. 135 SEP 1.9 MAG 10.02,11.91 SP K5 DIST. 84.6 PC (275.97 L.Y.)

STF 1668 AB: 508; 333x: White near equal, >1" separated, nice
12H 40M 54.13S +08° 49' 45.2" P.A. 187 SEP 1.1 MAG 7.78,8.10 SP F5V DIST. 121.07 PC (394.93 L.Y.)

A 1602 AB: 508; 1067x: Yes! B resolves with seeing, well split, ~0.5", orange stars. Very nice
12H 42M 55.41S +05° 15' 59.9" P.A. 26.3 SEP 0.62 MAG 8.77,10.12 SP G5 DIST. 92.51 PC (301.77 L.Y.)

A 2488 AB: 508; 333x: White A red B, well separated ~5", three delta mag
12H 43M 37.02S +02° 09' 48.2" P.A. 191 SEP 4.6 MAG 8.74,12.30 SP F8 DIST. 303.95 PC (991.48 L.Y.)

A 1603 AB: 508; 333x: Very fine white and slightly red stars, ~3 delta or more, ~1" separation. In an arc of five stars, pretty
12H 43M 58.88S +03° 55' 56.6" P.A. 129 SEP 1.2 MAG 9.06,11.60 SP F5

STF 1674 AB: 508' 333x: Light yellow A and a bit deeper yellow B, close, ~2 delta mag.
12H 43M 47.85S +07° 33' 30.0" P.A. 173 SEP 2.3 MAG 8.77,9.32 SP G0 DIST. 199.6 PC (651.1 L.Y.)

J 432 AB: 508; 333x: Yellow-white stars, 1 delta mag, ~1" separation, nice well split
12H 45M 21.08S +03° 31' 28.0" P.A. 251 SEP 0.9 MAG 9.04,9.77 SP F8 DIST. 157.48 PC (513.7 L.Y.)

HU 893 AB: 508; 333x: Light yellow stars, noticeable mag difference, ~1.5"
12H 47M 58.12S +12° 17' 08.5" P.A. 33 SEP 1.5 MAG 10.58,10.85 SP F4

HLD 117 AB: 508; 333x: Dual tenth mag stars, slight mag difference, wide ~2-3" suspect galaxies in area
12H 49M 09.57S +07° 38' 16.3" P.A. 21 SEP 2.5 MAG 10.26,10.60 SP F8

BU 459 AB: 508; 333x: Light yellow A and ~3 delta mag B, wide ~3"
12H 48M 04.02S +03° 27' 19.1" P.A. 295 SEP 5.4 MAG 8.06,11.05 SP F5 DIST. 187.97 PC (613.16 L.Y.)

HU 894 AB: 508; 333x: Very nice near equal white pair, well separated ~1"
12H 53M 18.76S +13° 09' 55.8" P.A. 143 SEP 1.2 MAG 9.78,9.87 SP G5 DIST. 268.82 PC (876.89 L.Y.)

STF 1693 AB: 508; 333x: Equal white, wide separation
12H 56M 40.32S +07° 01' 11.8" P.A. 332 SEP 8.7 MAG 9.88,10.51 SP G DIST. 139.08 PC (453.68 L.Y.)

FIN 380 AB: 508; 1067x apodizing mask: !! Notched overlapping disks, orange-yellow equal stars. This should be added to the short period list since it is quickly closing. Glad I caught it now, just before it becomes impossible
12H 57M 13.62S +08° 17' 37.5" P.A. 163.2 SEP 0.18 MAG 7.50,7.88 SP F5 DIST. 101.73 PC (331.84 L.Y.)grafico orbita
STT 270 AB: 203; 667x: Tau Boo. Brief glimpses of B well separated from A on outside of diffraction using the 8-inch mask mask. Higher magnifications and full aperture had too much diffraction. The A star is yellow-orange but I could not get a sense of any color of B, other than being about the same color as A
13H 47M 15.74S +17° 27' 24.8" P.A. 78.9 SEP 1.37 MAG 4.50,11.10 SP F6IV+M2V DIST. 15.62 PC (50.95 L.Y.)grafico orbita
A 2063 AB: 508; 1067x: I sense elongation or peanut at 667x & 1067x, but very tentative.
13H 46M 31.47S +15° 45' 04.9" P.A. 137 SEP 0.2 MAG 9.55,9.85 SP F8 DIST. 219.78 PC (716.92 L.Y.)

J 1125 AB: 508; 667x: A bit of a haze surrounding it, so the images are not sharp, but I see two bright glows within it at the correct <1" separation, more than one delta mag
14H 12M 09.32S +27° 21' 59.1" P.A. 97 SEP 0.7 MAG 10.37,10.68 SP G0

COU 480 AB: 508; 333x: B very faint, but can see it at best focus & with seeing, a little red color, ~2" separation
14H 12M 43.27S +25° 46' 52.9" P.A. 73 SEP 2 MAG 9.90,12.40 SP F5

POU3163 AB: 508; 333x: Wide separation, noticeable mag difference, likely part of plus one as there's another 11th mag forming a long triangle with the closer pair
14H 13M 30.83S +24° 32' 56.7" P.A. 279 SEP 47.5 MAG 11.00,13.25

ROE 74 AB: 508; 333x: Pretty close magnitudes, wide, nice light white-blue stars. Not physical
14H 15M 39.01S +22° 54' 45.3" P.A. 287 SEP 7.1 MAG 11.70,12.20

STF 3083 AB: 508; 333x: Attractive pair, blue-white A and rusty B, fairly wide.
14H 19M 40.85S +23° 30' 16.2" P.A. 233 SEP 4.8 MAG 9.03,10.98 SP G0 DIST. 118.91 PC (387.88 L.Y.)

POU3169 AB: 508; 333x: Both quite faint, needed averted vision for B, so they are unequal magnitude, wide ~5"
14H 20M 26.46S +24° 12' 04.6" P.A. 304 SEP 5.4 MAG 12.31,13.40

COU 403 AB: B flashes out with averted vison only, ~4" separated. Not physical
14H 21M 33.91S +26° 03' 52.3" P.A. 38 SEP 3.9 MAG 10.66,12.60 SP K0

STF 1866 AB: 508; 333x: Nice dual yellow-white stars, near equal, nicely split.
14H 41M 44.64S +09° 31' 39.4" P.A. 205 SEP 0.7 MAG 8.48,8.65 SP G5 DIST. 456.62 PC (1489.49 L.Y.)

HEI 533 AB: 508; 333x: Faint bluish colors, B visible when the scope moves, widely separated.
14H 42M 39.31S +11° 57' 06.4" P.A. 43 SEP 1.9 MAG 11.05,11.80

STF 1870 AB: 508; 333x: Very pretty light yellow A and light orange B, ~2 delta mag, ~4" separation
14H 42M 55.10S +08° 04' 34.3" P.A. 228 SEP 4.8 MAG 7.46,9.98 SP F2 DIST. 198.02 PC (645.94 L.Y.)

KU 48 AB: 508; 333x: Near equal, wide ~7". Two other stars near by on either side making a shallow arc, likely a system (Quintuple system, physical)
14H 43M 02.28S +13° 09' 55.7" P.A. 138 SEP 6.6 MAG 10.43,10.66 SP K0

HEI 534 AB: 508; 333x: Very fine, split, almost one delta, less than one sep
14H 44M 32.54S +12° 21' 06.1" P.A. 262 SEP 0.6 MAG 11.80,11.90

STF 1879 AB: 508; 333x: Light yellow stars, 1 delta mag, almost 2" separation, in a rich field
14H 46M 15.58S +09° 38' 48.2" P.A. 82.3 SEP 1.72 MAG 7.79,8.45 SP G2V DIST. 43.22 PC (140.98 L.Y.)

A 1110 AB: 508; 333x: Very nice, split with seeing, light yellow stars, slight mag difference
14H 49M 42.18S +07° 59' 12.3" P.A. 244 SEP 0.7 MAG 7.69,7.93 SP F5+F8III DIST. 132.28 PC (431.5 L.Y.)

A 1111 AB: 508; 333x: Very pretty, ~2 delta, ~3" separation. Blue-white and reddish colors. Fine pair
14H 49M 46.75S +10° 17' 43.5" P.A. 297 SEP 3.3 MAG 9.10,11.20 SP K0

LEO 12 AB: 508; 333x: Very nice near equal, well separated ~4"
14H 50M 53.97S +10° 50' 33.8" P.A. 148 SEP 3.4 MAG 11.10,11.30

HEI 781 AB: 508; 333x: Near equal, B is a little dimmer and slightly yellow-white, A is yellow. Very well split ~1.5"
14H 56M 26.61S +08° 41' 58.9" P.A. 218 SEP 1.6 MAG 10.73,10.95 SP G0

PPM 131016 508; 333x: Very delicate. B is visible direct vision but is quite faint, nicely set off from the moderately bright A, ~2.5" separation ** not in WDS.

STF 1960 AB: 508; 333x: Wide pair, 1 delta mag.
15H 36M 35.97S +09° 14' 45.4" P.A. 319 SEP 12.1 MAG 9.96,10.52 SP G5

STT 300 AB: 508; 333x: Pretty canary yellow A and light blue B, wide, ~3 delta mag.
15H 40M 10.35S +12° 03' 10.6" P.A. 261 SEP 15 MAG 6.32,10.07 SP G7.5IIIA DIST. 286.53 PC (934.66 L.Y.)

A 2076 AB: 508; 333x: Tight white near equal pair, <1" separation. Physical with a 770 year period
15H 40M 28.45S +18° 40' 18.0" P.A. 186.1 SEP 0.73 MAG 8.28,8.44 SP A2 DIST. 309.6 PC (1009.92 L.Y.)

BU 619 AB: 508; 533x: Clean split when seeing settles, ~1 delta mag, light orange A and light blue B. (Need to reobserve this one; BC is 8.3/9.5 0.3")
15H 43M 10.53S +13° 40' 03.7" SEP 0.6 MAG 6.95,7.94 SP G4IV DIST. 173.31 PC (565.34 L.Y.)

ROE 75 AB: 508; 333x: Nice pair, ~2 delta mag, wide. white. Physical
15H 44M 21.80S +15° 17' 59.0" P.A. 327 SEP 6 MAG 8.23,10.68 SP G0 DIST. 46.27 PC (150.93 L.Y.)

HEI 238 AB: 508; 333x: Equal faint stars, just split in finest moments, some haze about them
15H 46M 15.54S +16° 13' 41.2" P.A. 143 SEP 1.2 MAG 11.40,11.60 SP F5

COU 67 AB: 508; 333x: Dual 11th mag stars, very nicely resolved, blue
15H 54M 00.28S +19° 35' 49.6" P.A. 218 SEP 1.6 MAG 10.99,11.07

BRT1941 AB: 508; 333x: Faint but pretty well split, ~4", noticeable mag difference
15H 55M 36.70S +17° 26' 29.6" P.A. 321 SEP 3.4 MAG 10.50,11.50

STF 1988 AB: 508; 333x: Near equal pair, blazing white, ~2"
15H 56M 45.53S +12° 28' 40.6" P.A. 249 SEP 1.8 MAG 7.59,7.84 SP F1V DIST. 96.25 PC (313.97 L.Y.)

BRT2422 AB: 508; 333x: Orange A and blue B, slight magnitude difference, wide ~5". Nice pair -- but not physical
15H 57M 46.41S +17° 36' 44.3" P.A. 180 SEP 4.5 MAG 10.50,10.80

ALD 3 AB: 508; 333x: Split with seeing, averted vision to brighten the stars up more
15H 57M 23.17S +15° 26' 05.8" P.A. 30 SEP 1.7 MAG 10.56,10.00

STF 1990 BC: 508; 333x: BC is near equal white ~3" separation. Part of a quadruple system -- that's not physical!
15H 58M 56.87S +21° 47' 54.8" P.A. 25 SEP 4 MAG 9.25,9.29 SP A2 DIST. 162.34 PC (529.55 L.Y.)

STT 303 AB; 508; 333x: Nice white pair, slight mag difference, ~4" separation. Physical with 1460 year period
16H 00M 54.16S +13° 16' 18.2" P.A. 174.1 SEP 1.61 MAG 7.69,8.06 SP F7V DIST. 97.28 PC (317.33 L.Y.)

STF 2000 AB: 508; 333x: Nice white pair, slight mag difference, ~3" separation
16H 03M 02.17S +13° 59' 28.8" P.A. 228 SEP 2.6 MAG 8.42,9.22 SP F2 DIST. 200 PC (652.4 L.Y.)

STF 2003 AB: 508; 333x: ! Really great yellow A and blue B pair, wide, ~2 delta mag. Striking. physical
16H 03M 39.61S +11° 26' 00.8" P.A. 170 SEP 14.2 MAG 7.27,10.47 SP K3III DIST. 132.8 PC (433.19 L.Y.)

HEI 385 AB: 508; 333x: Very fine, unassuming pair, bluish, ~2" separation
16H 09M 23.26S +13° 04' 15.9" P.A. 8 SEP 1.9 MAG 11.07,11.31

A 1116 AB: 508; 333x: Near equal white, nicely split, <1"
15H 11M 38.29S +10° 07' 29.7" P.A. 53 SEP 0.8 MAG 8.84,8.63 SP A9V DIST. 225.73 PC (736.33 L.Y.)

BRT1940 AB: 508; 333x: Slight magnitude difference, B just visible direct, ~4" separation
15H 11M 42.45S +10° 53' 37.5" P.A. 167 SEP 3.1 MAG 10.40,11.60

COU 189 AB: 508; 1067x: FL Ser. I get elongation only at all powers up to 1067x, no notches. Light orange stars
15H 12M 04.27S +18° 58' 33.7" P.A. 140 SEP 0.4 MAG 6.16,8.94 SP M4IIIAB DIST. 221.73 PC (723.28 L.Y.)

STF 1940 AB: 508; 667x: ! Hairline split with seeing, slight magnitude difference, light orange stars
15H 26M 08.92S +18° 10' 16.2" P.A. 332 SEP 0.3 MAG 8.46,8.88 SP F8 DIST. 263.85 PC (860.68 L.Y.)

HO 549 BC: 508; 333x: Very finely split, faint, really challenging at tis magnification. AB is bright white star A, very wide
15H 31M 50.89S +14° 03' 39.2" P.A. 241 SEP 0.9 MAG 11.08,11.30

A 2075 AB: 508; 333x: ! Barely split, with seeing. B appears as a head separated from the snowman, significant mag difference. bluish stars. Very fine
15H 31M 51.90S +16° 23' 08.9" P.A. 95 SEP 0.5 MAG 9.30,10.10 SP F5

LEO 33 AB: 508; 333x: Tight near equal white stars, ~1.5" separation
15H 35M 11.73S +14° 55' 10.1" P.A. 261 SEP 1.5 MAG 10.46,10.46

STF 1957 AB: 508; 1067x: Lumpy out of roundness, very subtle notch if any.
15H 35M 51.05S +12° 54' 58.7" P.A. 135 SEP 0.3 MAG 7.96,9.43 SP F8 DIST. 68.26 PC (222.66 L.Y.)

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