27 may 2020

On this night I decided to point the scope along the meridian line to the north. I wanted not to go over the same area of sky I covered in previous nights, and so as not to disturb sleeping family or neighbors, to keep the slewing motion, and motor sounds, to a minimum. I wrapped up the Argo Navis in a jacket to muffle its beeps -- though at the end of the night the unit was overly warm -- will have to turn off the LCD heater so I don't damage the unit this way. There were roof currents (since I was pointed over my own house, so I started out with the 8-inch mask until the seeing improved..

A 1362: 203; 333x: A is light orange, but B only reveals itself with averted vision since it's closer to the primary
13H 29M 03.27S +56° 13' 59.6" P.A. 112 SEP 3.5 MAG 7.68,10.86 SP K0III DIST. 264.55 PC (862.96 L.Y.)

BEM 6 AB: 203; 333x: Faint, one delta mag, wide, easier to see B when its in the side of field or scope is moving.
13H 33M 45.06S +54° 18' 04.2" P.A. 190 SEP 8.3 MAG 10.43,11.19

AG 190 AB: 203; 333x: White pair, tight ~2", need seeing to settle before it sharpens
13H 35M 38.82S +49° 39' 21.7" P.A. 13 SEP 2.6 MAG 9.56,9.82 SP K0

BU 934 AB: 203; 333x: Faint, noticeable magnitude difference, hazy split with seeing
13H 37M 39.37S +50° 28' 28.4" P.A. 265 SEP 1.3 MAG 10.70,10.77 SP G0

STF 1770 AB: 203; 333x: Light orange stars, two delta mag, ~1.5" nicely separated. Physical
13H 37M 42.92S +50° 42' 53.5" P.A. 128 SEP 1.8 MAG 6.93,8.18 SP K3III: DIST. 434.78 PC (1418.25 L.Y.)

BU 802: AB; 203; 333x: Very tough, B appears very briefly in perfect stillness as a very small fine point, outside of A's first diffraction ring, but disappears quickly
13H 48M 36.15S +48° 21' 23.6" P.A. 225 SEP 4 MAG 7.56,11.78 SP A8IV DIST. 117.23 PC (382.4 L.Y.)

A 1614 AB: 203; 333x: Close pair, slight magnitude difference, ~2". Physical with 205 year period
13H 57M 40.26S +51° 59' 37.2" P.A. 298.8 SEP 1.4 MAG 8.99,9.13 SP G5 DIST. 52.85 PC (172.4 L.Y.)

STF 1795 AB: 203; 333x: ! Very beautiful pair. A is blue-white and B shines as if by reflected light, not of its own brightness. B is a very fine point well separated ~8", ~3 delta mag
13H 58M 55.41S +53° 06' 23.2" P.A. 2 SEP 7.9 MAG 6.91,9.83 SP A3IV-V DIST. 156.49 PC (510.47 L.Y.)

A 1097 AB: 203; 533x: Notched elongation, near equal, light orange. Plus one not far away (STF 1800 AB-C)
14H 02M 00.60S +57° 13' 28.6" P.A. 258.6 SEP 0.42 MAG 9.09,8.24 SP F5 DIST. 146.63 PC (478.31 L.Y.)

LDS2700 AB: 203; 333x: wide equal magnitude, physical. Did not see close pair (HDS 1980 Aa-Ab, 9.76/11.45 1.4")
14H 06M 46.34S +59° 46' 16.9" P.A. 150 SEP 49 MAG 9.77,9.30 SP F5 DIST. 101.52 PC (331.16 L.Y.)

STF 1820 AB: 203; 333x: Slightly orange, slight magnitude difference, wide ~3" separation
14H 13M 00.76S +55° 19' 31.1" P.A. 123 SEP 2.8 MAG 9.06,9.42 SP K2 DIST. 38.26 PC (124.8 L.Y.)

STF 1831 AB: 203; 333x: Quite the system, septuple. AB has a nice mag difference and is well separated, an attractive pair. Physical. The C component, which is 6.73, appears red to me
14H 16M 08.47S +56° 42' 45.7" P.A. 138 SEP 5.8 MAG 7.16,9.56 SP A7IV DIST. 156.01 PC (508.9 L.Y.)

STF 1821 AB: 203; 333x: Kap2 Boo, Asellus Tertius. Bright pair, light yellow A and very slightly blue B, wide separation, ~2 delta mag.
14H 13M 29.00S +51° 47' 23.8" P.A. 236 SEP 13.7 MAG 4.53,6.62 SP A7V+F1V DIST. 50.1 PC (163.43 L.Y.)

STF 1829 AB: 203; 205x: Very light yellow A and slightly blue B, wide, ~1 delta mag, physical
14H 15M 27.95S +50° 26' 24.6" P.A. 151 SEP 5.6 MAG 8.10,8.63 SP F5 DIST. 160.51 PC (523.58 L.Y.)

A 1616 AB: 203; 205: Near equal, can just split, very tight
14H 16M 01.20S +52° 47' 10.7" P.A. 85 SEP 1.7 MAG 10.27,10.53 SP G5

BU 1271 AB: 203; 333x: A is relatively bright, B star flashes out with averted vision, very tight split, physical
14H 17M 03.92S +54° 32' 34.8" P.A. 354 SEP 1.6 MAG 7.10,12.30 SP G1IV DIST. 55.96 PC (182.54 L.Y.)

A 147 AB: 203; 667x: Suspected at 333x, hazy notched elongation at 667x but seeing is not good enough to focus cleanly
14H 17M 03.03S +50° 59' 45.2" P.A. 109 SEP 0.7 MAG 8.78,10.08 SP G5 DIST. 78.37 PC (255.64 L.Y.)

BU 1272 AB: 203; 333x: Just barely split with seeing, very fine, slight magnitude difference, ~1"
14H 17M 47.55S +48° 45' 10.3" P.A. 138 SEP 1.3 MAG 9.47,10.38 SP A2

STF 1834 AB: 203; 333x: Near equal white, nicely separated. Physical with 431 year period
14H 20M 17.60S +48° 30' 25.1" P.A. 103.5 SEP 1.62 MAG 8.09,8.29 SP F9V DIST. 75.36 PC (245.82 L.Y.)

STF 1839 AB: 203; 333x: Wide pair, near equal, A is a little blue and B slightly red. Physical
14H 21M 27.38S +53° 53' 50.9" P.A. 83 SEP 14.5 MAG 8.84,8.92 SP G0 DIST. 178.89 PC (583.54 L.Y.)

A 148 AB: 203; 333x: Notched elongation or overlapping disks on a small scale, white stars
14H 22M 01.20S +51° 06' 40.3" P.A. 192 SEP 0.5 MAG 8.32,8.96 SP F5 DIST. 123.15 PC (401.72 L.Y.)

BU 615 AB: 203; 333x: B is averted vision only, surprisingly tough, tight split.
14H 22M 14.90S +48° 31' 31.5" P.A. 235 SEP 3 MAG 9.60,10.60 SP K0

ES 961 AB: 203; 333x: Wide pair, almost one delta mag, faint
14H 31M 08.99S +48° 07' 30.5" P.A. 320 SEP 6.6 MAG 10.71,11.00

STF 1863 AB: 203; 333x: Hairline split with seeing, slight mag difference, white. Physical with 538 year period.
14H 38M 00.71S +51° 34' 42.1" P.A. 59.3 SEP 0.65 MAG 7.71,7.80 SP F4V DIST. 82.17 PC (268.04 L.Y.)

STT 284 AB: 203; 333x: B revealed by averted vision, well separated from A, faint. Physical
14H 40M 16.76S +48° 42' 32.4" P.A. 103 SEP 7.2 MAG 7.91,11.56 SP F0 DIST. 106.72 PC (348.12 L.Y.)

A 1623 AB: 203; 333x: ! Very fine sight. B revealed by foveal coaxing (switching between averted and direct vision, slowly moving the averted vision target closer to the primary) and it appeared as a direct vision point close but well separated, significant mag difference. A is yellow, B is light orange
14H 41M 20.66S +52° 38' 49.3" P.A. 241 SEP 1.9 MAG 8.65,11.23 SP F8 DIST. 84.39 PC (275.28 L.Y.)

STF 1871 AB: 203; 333x: Close near equal white stars, nicely separated
14H 41M 35.50S +51° 23' 51.3" P.A. 313 SEP 1.9 MAG 8.02,8.07 SP F3V DIST. 99.3 PC (323.92 L.Y.)

ES 962 AB: 203; 333x: B revealed easily with averted vision, and lingers for a short time before disappearing again, well separated.
14H 43M 51.22S +47° 43' 02.8" P.A. 263 SEP 10.7 MAG 8.70,11.30 SP G0

STF 1889 AB: 203; 333x: Pretty light yellow A and ~3 delta mag blue B, wide separation. Not physical
14H 49M 32.37S +51° 22' 28.2" P.A. 93 SEP 15.1 MAG 6.53,9.64 SP F3V DIST. 57.11 PC (186.29 L.Y.)

STF 1890 AB: 203; 333x: 39 Boo. White ~1 delta mag, ~2.5", nice pair showing good disks
14H 49M 41.37S +48° 43' 15.6" P.A. 46 SEP 2.6 MAG 6.31,6.67 SP F6V+F5V DIST. 68.59 PC (223.74 L.Y.)

A 1625 AB: 203; 333x: Nice near equal, faint, close ~3", bluish. Plus one pairing is ~1 mag fainter and farther out. CD not seen as it's 14th mag, would be good from a dark site
14H 54M 04.85S +52° 17' 46.2" P.A. 117 SEP 3.6 MAG 10.29,10.54 SP F8 DIST. 305.81 PC (997.55 L.Y.)

A 1137 AB: 203; 333x: Very tough. B appeared very briefly with best seeing as a tiny point split from A, but quickly taken back by diffraction
16H 19M 14.26S +57° 35' 56.3" P.A. 204 SEP 0.6 MAG 9.16,9.76 SP A3

ES 1793 AB: 203; 333x: Wide, ~3 delta mag, white and dull white. Physical
16H 12M 35.11S +57° 47' 42.0" P.A. 57 SEP 5.8 MAG 8.74,11.52 SP F8 DIST. 119.9 PC (391.11 L.Y.)

ES 2651 AB: 203; 333x: Quite wide separation and ~3 delta mag, white A and dull blue B. Physical
16H 09M 02.89S +57° 56' 16.3" P.A. 140 SEP 12.3 MAG 6.33,12.14 SP A1V DIST. 123.61 PC (403.22 L.Y.)

HU 154 AB: 203; 333x: Fine pair when seeing sharpens, blue-white A and bluish B, ~1" separation. Physical
16H 00M 21.25S +54° 31' 21.2" P.A. 298 SEP 1.4 MAG 7.89,10.85 SP A0 DIST. 134.77 PC (439.62 L.Y.)

STF 2006 AB: 203; 333x: Really fine when seeing sharpens, white A and blue B, ~1.5" separation
16H 00M 18.28S +58° 56' 03.0" P.A. 177 SEP 1.5 MAG 8.48,9.96 SP A3 DIST. 206.19 PC (672.59 L.Y.)

TDS9392 AB: 508; 333x: B revealed by foveal coaxing, very faint and very close in
15H 04M 27.46S +53° 50' 22.2" P.A. 290 SEP 1.1 MAG 11.21,12.24

STT 294 AB: 508; 333x: Bright white A, and B is faint but seen direct vision, seems reddish color, well separated, ~4 delta mag
15H 12M 57.91S +56° 02' 47.2" P.A. 244 SEP 3 MAG 7.55,11.26 SP A4III DIST. 119.62 PC (390.2 L.Y.)

ES 740 AB: AB 508; 333x: Pretty pair, dull white, ~1 delta mag, ~3-4" separation
15H 18M 43.18S +53° 33' 38.7" P.A. 38 SEP 3.5 MAG 10.20,10.70 SP G5

ES 741 AB: 508; 333x: More than one delta mag, wide ~9" separation
15H 19M 49.78S +52° 44' 51.2" P.A. 235 SEP 8.9 MAG 9.78,11.80 SP F8

HU 147 AB: 508; 667x: Very brief split with seeing when points resolve, seeing making it hazy otherwise. Nice.
15H 20M 22.11S +53° 08' 52.4" P.A. 287 SEP 0.6 MAG 10.28,10.30 SP K0 DIST. 119.47 PC (389.71 L.Y.)

HU 148 AB: 508; 333x: Split, though hazy, ~1.5", significant magnitude difference
15H 22M 28.30S +55° 16' 19.9" P.A. 207 SEP 1.5 MAG 9.42,10.76 SP G0

HU 149 AB: 508; 333x: Awesome hairline split, near equal, light yellow-orange. Great pair, physical
15H 24M 35.30S +54° 12' 46.1" P.A. 270.4 SEP 0.65 MAG 7.48,7.62 SP K0 DIST. 234.74 PC (765.72 L.Y.)

STF 1948 AB: 508; 333x: Bright white wide pair, ~1 delta mag. Physical
15H 26M 34.86S +54° 53' 56.5" P.A. 48 SEP 12.9 MAG 8.71,9.65 SP A5 DIST. 127.71 PC (416.59 L.Y.)

A 1124 AB: 508; 333x: Nicely split close pair, ~1 delta mag, light yellow-white stars
15H 36M 05.00S +55° 31' 19.6" P.A. 143 SEP 1.5 MAG 9.24,9.60 SP F8 DIST. 165.02 PC (538.3 L.Y.)

STF 1969 AB: 508; 333x: Split pretty well, though close, slight mag difference, light yellow-white. Physical 434 year period
15H 41M 16.41S +59° 59' 17.2" P.A. 29.3 SEP 1.1 MAG 9.14,9.50 SP K0 DIST. 55.65 PC (181.53 L.Y.)

STF 2060 AB: 508; 333x: Near equal white, well split ~4". Not physical
16H 28M 32.06S +56° 44' 07.9" P.A. 247 SEP 3.8 MAG 10.19,10.26 SP G5 DIST. 307.69 PC (1003.68 L.Y.)