9 june 2020

Another late night last night. I felt less tired than the night before since I took some naps. As before the seeing did not get good until midnight, and even then it wasn't above 7/10 -- so I kept the 8-inch mask on much of the time. Transparency remained a problem, so fainter stars were more difficult. A nice night and I was surprised how many I observed. I stayed in a mostly 10-degree band in the sky to minimize the slewing noise and to keep myself on a ladder -- I hardly changed position at all. A very Herschelian way of observing.

SEI 537 AB: 203; 205x: Faint but equal pair, pretty wide ~6". Not physical
14H 45M 47.55S +30° 58' 03.2" P.A. 308 SEP 7.2 MAG 11.06,11.60

HO 389 AB: 203; 205x: Blue-white A and much fainter B, in first diffraction ~1".
14H 52M 07.44S +20° 17' 26.5" P.A. 88 SEP 1.6 MAG 6.96,10.49 SP A0 DIST. 109.17 PC (356.11 L.Y.)

REU 2 AB: 203; 205x: Suspect at 205x, can barely draw out B star with averted vision, seeing not good for higher magnification. Marginal
14H 53M 51.40S +23° 33' 20.9" P.A. 78.6 SEP 0.67 MAG 12.24,12.66 SP M5V DIST. 10.16 PC (33.14 L.Y.)

STF 1937 AB: 203; 667x: Eta CrB Very subtly notched elongation, each lobe a different magnitude, can tell it is not round at 205x, and detect elongation at 333x, but needed higher magnification to see well. This is a short period pair which will become much easier in the next few years; need to re-observe on a better night
15H 23M 12.23S +30° 17' 17.7" P.A. 256.1 SEP 0.39 MAG 5.64,5.95 SP F8V+G0V DIST. 17.86 PC (58.26 L.Y.)

STF 1941 AB: 203; 205x: Finely split near equal white stars, ~2"
15H 25M 42.81S +26° 37' 40.5" P.A. 212 SEP 1.4 MAG 9.65,9.77 SP F5 DIST. 168.63 PC (550.07 L.Y.)

COU 610 AB; 203; 333x: Theta CrB I can only coax a misshape at all powers up to limits of seeing 667x.
15H 32M 55.78S +31° 21' 32.9" P.A. 199 SEP 0.8 MAG 4.27,6.29 SP B6VNNE DIST. 115.07 PC (375.36 L.Y.)

COU 611 AB: 203; 333x: Near to Eta CrB. Faint, can flash the elongation and sharpens in best moments.
15H 33M 05.48S +31° 13' 26.2" P.A. 98 SEP 0.7 MAG 11.06,11.09 SP F8

HU 746 AB: 203; 205x: ! Very cool star. Cream white A star and, with seeing and foveal coaxing, B appears and holds steady, almost 3" separation, large magnitude difference
15H 34M 26.26S +32° 01' 01.3" P.A. 216 SEP 2 MAG 8.85,11.59 SP K0 DIST. 251.89 PC (821.67 L.Y.)

STF 1963 AB: 203; 205x: Well separated, about 1 delta mag, white stars
15H 37M 53.73S +30° 06' 10.4" P.A. 298 SEP 5.3 MAG 8.54,8.85 SP F8 DIST. 75.87 PC (247.49 L.Y.)

COU 976 AB: 203; 205x: Very nice near equal stars, split pretty well, ~>1"
15H 38M 57.95S +34° 00' 51.6" P.A. 127 SEP 1.2 MAG 10.50,10.64

COU 615 AB: 203; 333x: B flashes with averted vision only, an elongation which won't clearly split.
15H 45M 51.26S +26° 36' 07.0" P.A. 208 SEP 0.5 MAG 10.50,10.50 DIST. 540.54 PC (1763.24 L.Y.)

HO 399 AB: 203; 205x: B is extremely faint, only seen at best moments and with foveal coaxing, no other way
15H 55M 25.81S +29° 32' 13.5" P.A. 117 SEP 3.7 MAG 7.68,10.49 SP A2V DIST. 154.8 PC (504.96 L.Y.)

AG 349 AB: 203; 205x: Nice 1 delta mag wide pair, white A and blue B
16H 01M 04.36S +28° 06' 42.4" P.A. 228 SEP 11.7 MAG 9.59,10.86 SP F8

HDS 2267 AB: 203; 667x: Very subtly out of round, light orange star
16H 04M 19.62S +32° 29' 50.6" P.A. 330 SEP 0.4 MAG 8.17,10.63 SP K2 DIST. 161.03 PC (525.28 L.Y.)

STT 305 AB: 203; 205x: Light orange A, B appears with good focus and steady sky, very much fainter than A.
16H 11M 39.60S +33° 20' 33.8" P.A. 263 SEP 5.7 MAG 6.44,10.17 SP K2III DIST. 154.56 PC (504.17 L.Y.)

STF 1954 AB: 203; 205x: Delta Ser. Striking bright white pair, ~1 delta mag & ~4"
15H 34M 48.14S +10° 32' 20.0" P.A. 171.6 SEP 3.97 MAG 4.17,5.16 SP F0IV DIST. 69.93 PC (228.11 L.Y.)

WFC 168 AB: 203; 205x: Faint pair, near equal, wide, bluish for faintness.
15H 45M 57.19S +16° 59' 32.9" P.A. 303 SEP 7.1 MAG 10.92,11.19

COU 193 AB: 508; 333x: Very small scale, but I am getting a pair of stars reasonably hairline split hairline, one noticeably fainter than the other
15H 48M 12.47S +19° 25' 17.9" P.A. 290 SEP 0.6 MAG 11.10,11.70 SP F5

A 2078 AB: 508; 205x: Very light yellow A and very light orange B, ~2 delta mag, ~1" split, attractive
15H 50M 53.32S +19° 10' 48.9" P.A. 165 SEP 1.1 MAG 8.93,9.57 SP F2 DIST. 371.75 PC (1212.65 L.Y.)

STF 2051 AB: 508; 205x: Light yellow stars, wide, ~2 delta mag.
16H 29M 25.06S +10° 35' 31.4" P.A. 19 SEP 13.7 MAG 7.68,9.42 SP G5III DIST. 218.82 PC (713.79 L.Y.)

BRT1283 AB: 508; 205x: Easy equal, wide. Not physical.
16H 26M 05.83S +13° 22' 52.3" P.A. 144 SEP 3.3 MAG 11.34,11.74

HEI 542 AB: 508; 205x: Equal bluish stars, pretty wide separation
16H 24M 13.73S +11° 13' 08.1" P.A. 140 SEP 2.3 MAG 11.25,11.62 SP G0

STF 2040 AB: 508; 205x: White A and ruddy B, wide, ~3 delta mag.
16H 23M 05.73S +13° 50' 23.3" P.A. 312 SEP 7.1 MAG 8.11,10.14 SP F2 DIST. 195.69 PC (638.34 L.Y.)

HEI 242 AB: 508; 205x: Easy, but faint, bluish, wide, near equal
16H 22M 38.61S +16° 08' 24.4" P.A. 71 SEP 3.5 MAG 11.20,11.20

TDS9851 AB: 508; 205x: B seen with averted vision only, very faint
16H 20M 47.41S +16° 24' 18.7" P.A. 62 SEP 3.2 MAG 12.30,12.76

STF 2037 AB: 508; 205x: Slight magnitude difference, slightly more than 1" separation, easy
16H 18M 49.03S +17° 23' 58.3" P.A. 256 SEP 1.1 MAG 9.82,9.86 SP G5 DIST. 167.5 PC (546.38 L.Y.)

HDS2301 AB: 508; 205x: ~3 delta mag, B is faint but still well seen in A's first diffraction, ~1"
16H 16M 46.04S +14° 47' 25.5" P.A. 55 SEP 1 MAG 8.75,11.23 SP G5 DIST. 153.14 PC (499.54 L.Y.)

HU 480 AB: 508; 205x: B is faint but seen easily, ~2 delta, ~1.5"
16H 15M 33.90S +19° 44' 05.8" P.A. 262 SEP 1.6 MAG 10.08,11.08 SP G5 DIST. 106.95 PC (348.87 L.Y.)

A 2083 AB: 508; 205x: White stars, near equal, good split ~1"
16H 14M 45.51S +16° 00' 24.0" P.A. 153 SEP 1.2 MAG 9.99,10.10 SP F8 DIST. 671.14 PC (2189.26 L.Y.)

STF 2016 AB: 508; 205x: Wide split, more than 1 delta mag, white A and blue white B
16H 12M 07.05S +11° 54' 39.2" P.A. 148 SEP 7.6 MAG 8.49,9.60 SP A3 DIST. 172.12 PC (561.46 L.Y.)

A 1799 AB: 508; 205x: White stars, slight mag difference, good clean split ~1.5" separation
16H 11M 28.81S +15° 07' 25.3" P.A. 114.7 SEP 0.8 MAG 9.53,9.75 SP G5 DIST. 185.53 PC (605.2 L.Y.)

TDS9782 AB: 508; 205x: Faint and tightly split ~1", slight mag difference
16H 10M 30.08S +18° 27' 56.5" P.A. 313 SEP 1 MAG 11.38,11.47

HEI 68 AB: 508; 205x: B is faint but foveal coaxing can make it flash then hold direct. ~2 delta mag, ~5". Not physical
16H 01M 49.70S +14° 36' 49.5" P.A. 64 SEP 4.2 MAG 10.20,11.20

HJ 2798 BC: 508; 205x: Faint pair, pretty wide, noticeable magnitude difference, at the base of a triangle of stars
15H 57M 02.14S +17° 27' 02.8" P.A. 30 SEP 7.8 MAG 11.09,10.70 SP F5

STF 1986 AB: 508; 205x: White stars, wide, ~1 delta mag. Not physical
15H 55M 29.92S +10° 06' 17.4" P.A. 93 SEP 14.7 MAG 8.86,9.85 SP F0 DIST. 645.16 PC (2104.51 L.Y.)

A 1129 AB: 508; 333x: With foveal coaxing I can pull out the B star but it seems much fainter than tenth as per SkyTools data
15H 52M 17.99S +08° 41' 35.3" P.A. 119 SEP 4 MAG 9.10,14.40 SP F8

HEI 166 AB: 508; 205x: Faint but plain pair, ~half delta mag and ~4"
17H 10M 26.73S +16° 47' 55.8" P.A. 142 SEP 3.4 MAG 10.20,10.40

A 2086 AB: 508; 205x: Attractive pair, ~2 delta, ~1" separation. A is blue-white and B a little blush-red. Not physical
17H 09M 23.85S +19° 00' 58.3" P.A. 204 SEP 3.1 MAG 9.99,11.39 SP F5 DIST. 671.14 PC (2189.26 L.Y.)

J 1130 AB: 508; 205x: Amazingly fine split, both are faint stars but there's a noticeable mag difference, ~1". Very nice. It appears at the bottom of an asterism of brighter stars shaped like a sextant
17H 08M 41.23S +19° 45' 13.6" P.A. 302 SEP 1.4 MAG 11.55,12.02

BAR 42 AB: 508; 205x: Faint close pair, but seen clearly, ~2", ~1 delta mag
17H 06M 37.74S +17° 27' 19.3" P.A. 3 SEP 2 MAG 11.10,11.82

BRT2429 AB: 508; 205x: Another faint pair, slight magnitude difference, ~3". Not physical.
17H 05M 27.12S +18° 14' 35.9" P.A. 50 SEP 3.7 MAG 10.60,11.00

BRT2428 AB: 508; 205x: Faint but easy pair, considerable magnitude difference, wide ~3". Not physical
17H 04M 51.43S +18° 15' 52.9" P.A. 127 SEP 4 MAG 11.10,11.50

PRY 2 AB: 508; 205x: Nice. B seen ~2" separation from bright blue-white A, ~3 delta mag
17H 04M 41.34S +19° 35' 56.7" P.A. 227 SEP 1.8 MAG 6.19,9.29 SP A0IV DIST. 176.68 PC (576.33 L.Y.)

BU 822 AB: 508; 333x: Nice! A is a bright light orange color, and B is blue and appears among A's diffraction ~1.5" ~3 delta mag
17H 03M 52.67S +19° 41' 25.8" P.A. 227 SEP 1.4 MAG 6.58,9.89 SP K4III DIST. 229.89 PC (749.9 L.Y.)

COU 200 AB: 508; 667x: Exceedingly tough. B revealed foveal coaxing only when it coincides with best moments of seeing, very faint, considerably fainter than A which is constantly in view. I thought I could make it out with just 205x, or at least know the star is not single.
17H 00M 34.89S +20° 24' 57.6" P.A. 111 SEP 0.8 MAG 11.00,11.00

COU 199 AB: 508; 205x: Easy, wide, near equal pair
17H 00M 33.83S +20° 01' 34.1" P.A. 331 SEP 1.3 MAG 10.25,11.16 SP G5

STT 321 AB: 508; 667x: Hairline with 333x, good clean split 667x. Getting good disk images too. Very light yellow stars, slight magnitude difference.
16H 59M 24.48S +14° 18' 35.3" P.A. 12 SEP 0.5 MAG 9.03,8.92 SP K0

STT 319 AB: 333x: Hairline at 205x, good clean split with 333x. Light yellow stars, maybe half delta mag
16H 58M 04.82S +15° 09' 11.4" P.A. 66 SEP 0.8 MAG 8.18,8.89 SP K0 DIST. 294.99 PC (962.26 L.Y.)

STT 318 AB: 508; 205x: Attractive yellow pair, B a richer yellow since it's fainter, ~3 delta mag, ~3" separation
16H 56M 39.66S +14° 08' 24.9" P.A. 243 SEP 2.9 MAG 7.00,9.61 SP G9III DIST. 131.58 PC (429.21 L.Y.)

HEI 69 AB: 508; 205x: Very nice. Near a bright star. Faint A and considerably fainter B, pointed toward the bright star, ~3" separated but ~1 delta mag.
16H 53M 29.58S +15° 25' 47.6" P.A. 230 SEP 3.9 MAG 10.50,11.40

HU 1278 AB: 508; 205x: Tight split, ~1", white stars with noticeable magnitude difference. Good one
16H 52M 12.59S +15° 35' 12.7" P.A. 359 SEP 1.2 MAG 10.02,10.09 SP F8

BRT1284 AB: 508; 205x: Considerably faint, helped by averted vision to sharpen to blue points, near equal, pretty wide ~3-4". Not physical

16H 50M 45.44S +12° 59' 06.2" P.A. 122 SEP 3.7 MAG 12.20,12.20

STF 2103 AB: 508; 205x: Bright white and much fainter reddish or dull B, ~6"
16H 49M 34.67S +13° 15' 40.3" P.A. 44 SEP 5.2 MAG 5.93,10.00 SP A1V DIST. 100.1 PC (326.53 L.Y.)

BRT 2425 AB: 508; 205x: Easy near equal blue-white stars, half delta mag, wide ~5". Not physical
16H 48M 50.61S +19° 49' 51.1" P.A. 318 SEP 4.4 MAG 10.64,10.91

KU 55 AB: 508; 205x: Nice white stars, slight magnitude difference, pretty well split ~3"
16H 48M 28.21S +14° 49' 31.5" P.A. 47 SEP 2.4 MAG 9.80,10.47 SP F2

J 1137 AB: 508; 205x: Easy pair, near equal, ~3". Not physical
16H 45M 58.41S +12° 22' 32.0" P.A. 305 SEP 3.5 MAG 10.30,10.80

HU 1277 AB: 508; 205x: Very nice. B is very faint but I can make it out even at low magnification. It's very much fainter to the blue-white A, ~3"
16H 44M 33.90S +13° 36' 40.0" P.A. 10 SEP 2.8 MAG 8.62,11.94 SP A0 DIST. 1666.67 PC (5436.68 L.Y.)

HEI 544 AB: 508; 205x: Nice faint pair, ~3" separation, slight magnitude difference, bluish color due to faintness. Not physical
16H 44M 02.60S +12° 36' 07.3" P.A. 140 SEP 3 MAG 10.30,10.40 SP EM

HEI 243 AB: 508; 205x: Faint but obvious pair, pretty close ~3", bluish for faintness, slight magnitude difference.
16H 43M 22.82S +16° 08' 25.9" P.A. 339 SEP 3 MAG 11.69,11.80

STF 2083 AB: 508; 205x: Easy bright pair, slight magnitude difference, wide
16H 42M 44.12S +13° 36' 29.4" P.A. 334 SEP 12.8 MAG 9.13,9.56 SP G5V+G9V