Wednesday, July 29, 2020

28 july 2020

Spent some time looking at the moon with the 6-inch last night with binoviewers.  Seeing was pretty good and I could comfortably view at 365x.  I'm planning to adjust my eyepiece collection to fit with binoviewers using this scope--the viewing is so comfortable and contrasty, surely due to the small exit pupils, that I want a good range to view.
 
After dark, 10pm, I viewed with the 20-inch and seeing was good enough to use full aperture, but not so good as to get me over 533x.  Good pairs, in Lyra.  Many Espin pairs, he was very busy in this part of the sky.  Most of the fields were rich in stars.  Many of these are on the faint side for the typical observer, and I suspect not a lot of measures or research has been done because they are uncertain pairs.

ES 1424 AB: 508; 205x: A is a light orange & bright, B seen easily as a dull pin point, wide ~5", large delta mag.
18H 44M 57.58S +44° 21' 32.5" P.A. 90 SEP 7.9 MAG 8.36,13.00 SP F5 DIST. 128.7 PC (419.82 L.Y.)

ROE 50 AB: 508; 205x: A is a light blue and B is much fainter orange color, wide ~5"
18H 45M 19.87S +40° 04' 58.4" P.A. 282 SEP 4.7 MAG 10.80,11.70

STF 2394 AB: 508l 205x: Easy white near equal wide.  Physical.
18H 45M 28.48S +42° 02' 07.4" P.A. 203 SEP 6.9 MAG 9.61,9.96

BU 51 BC: 508; 205x: A is light orange & bright, BC is and obvious blue pair ~1 delta mag between B and C, wide ~3-4".  Nice!  Burnham: "Unimportant triple a short distance from Epsilon Lyrae, noted with 6-inch."
18H 45M 39.17S +39° 40' 45.9" P.A. 297 SEP 6 MAG 11.95,12.90

TDT1049 AB: 508; 333x: Faint pair split with seeing at 205x, more definite with 333x.  Slight mag difference.
18H 46M 29.75S +44° 16' 01.8" SEP 1.3 MAG 11.17,11.47

COU 1153 AB: 508; 533x: Snowman at best moments, slight mag difference.  Seems more difficult than a typical 0.4"
18H 46M 34.77S +34° 14' 58.0" P.A. 118 SEP 0.4 MAG 10.40,10.70

ES 2023 AB: 508; 205x: Bright white A, B is seen with averted vision and then can hold direct, ~7"
18H 48M 24.10S +36° 11' 41.8" P.A. 246 SEP 6.4 MAG 8.73,12.00 SP K0

COU 1311 AB: 508; 333x: Very faint, B needed foveal coaxing to come out then I could hold it, very tough.  Suspected at 205x.
18H 52M 18.70S +37° 13' 21.1" P.A. 223 SEP 1.3 MAG 11.69,12.40

TDT1116 AB: 508; 333x: Notched elongation only.  Seeing not supporting more.
18H 53M 38.40S +40° 28' 13.1" P.A. 330 SEP 0.6 MAG 11.10,11.28

ES 2028 BC: 508; 205x: Delta 2 Lyr.  ! Very cool.   A is bright light orange, and BC are blue pinpoints, ~2" with a slight mag difference.  Clearly and cleanly seen.
18H 54M 28.99S +36° 55' 20.1" P.A. 135 SEP 2.1 MAG 11.20,11.60 SP G2IV

HO 270 AB: 508; 205x: ! Bright yellow A and very faint B seen with averted vision then held direct, with another faint star one ninety degrees different PA and three times farter out (this is AC).  There is a streak of grainy stars across the field, very rich.
18H 54M 52.18S +41° 36' 09.8" P.A. 300 SEP 8.4 MAG 5.44,12.60 SP K0III DIST. 81.97 PC (267.39 L.Y.)

COU 1932 AB: 508; 333x: Suspect at 205x, nice clean split with 333x. white stars, slight mag difference
18H 54M 51.24S +44° 36' 56.2" P.A. 295 SEP 0.9 MAG 10.28,10.38 SP G0

ES 1657 AB: 508; 205x: White A and light red B, ~1 delta mag, wide ~4"
18H 55M 22.99S +40° 52' 12.0" P.A. 355 SEP 3.9 MAG 10.40,11.00

STF 3130 AB-C: 508; 205x: Very nice bright white A and slightly red B well split from A, three delta mag.  Did not notice the 0.4" AB pair STT 365
18H 55M 57.14S +44° 13' 41.9" P.A. 258 SEP 2.7 MAG 6.97,10.52 SP A2 DIST. 186.57 PC (608.59 L.Y.)

A 587 BC: 508; 205x: Excellent 2+1 pair, bright A, BC wide and 1 delta mag, well split ~2"
18H 57M 55.98S +44° 07' 00.0" P.A. 188 SEP 1.8 MAG 10.61,11.54 SP F8

AG 366 AB: 508; 205x: Near equal yellow-white easy split
18H 58M 03.46S +47° 11' 30.1" P.A. 185 SEP 1.4 MAG 8.54,8.67 SP G0 DIST. 49.55 PC (161.63 L.Y.)

COU1797 AB: 508; 205x: Easy close split, ~1 delta.  Nice
18H 58M 28.31S +42° 14' 34.1" P.A. 180 SEP 1.2 MAG 10.14,11.83

TDT1161 AB: 508; 205x: In same field as COU 1797 and with a similar PA. Faint, near equal, easy split
18H 58M 52.26S +42° 18' 25.4" P.A. 1 SEP 1.5 MAG 11.43,11.56

COU 1798 AB: 508; 333x: Hairline split at best moments, noticeable mag difference.
18H 59M 59.58S +41° 00' 54.0" P.A. 349 SEP 0.6 MAG 11.50,11.80

ES 1326 AB: 508; 205x: Nicely split pair, noticeable mag difference ~1", white
19H 00M 21.32S +44° 59' 51.8" P.A. 228 SEP 2.4 MAG 9.30,10.40 SP G0

ES 1429 AB 508; 205x: Easy wide ~2 delta mag light yellow pair
19H 00M 29.30S +43° 13' 14.1" P.A. 12 SEP 6.1 MAG 9.70,11.10 SP M2

ES 1430 AB: 508; 205x: Delicate pair, good with seeing, >0.5 delta mag. 
19H 02M 23.15S +42° 30' 26.4" P.A. 109 SEP 1.6 MAG 10.68,11.65

A 589 AB: 508: 533x: ! Exceedingly fine pair, split with seeing, ~1 delta mag, white A and blue B.  In the same field with ES 1430.
19H 03M 01.81S +42° 32' 45.8" P.A. 6 SEP 0.7 MAG 9.52,10.10 SP A2

DA 9 AB: 508; 205x: Used apodising mask to clean up A's disk image.  B appears as a light blue disk nicely separated, diamond ring to white A.  Nice
19H 04M 15.72S +43° 52' 49.5" P.A. 172 SEP 2 MAG 7.05,10.22 SP A0V DIST. 233.64 PC (762.13 L.Y.)

STF 2463 AB: 508; 205x: Light orange-yellow A and light blue B, wide, ~1 delta.  Not physical
19H 06M 01.16S +45° 48' 50.5" SEP 9.7 MAG 9.07,10.80 SP G5

A 704 AB: 508; 205x: Very fine split, white near equal, ~1"
19H 07M 53.09S +46° 52' 06.0" P.A. 280 SEP 1.1 MAG 10.35,10.48 SP A0

TDT1246 AB: 508; 333x: Same field as A 704.  Very fine B seen and split with seeing as a fine point, ~1 delta mag
19H 08M 30.59S +47° 27' 36.4" P.A. 97 SEP 0.7 MAG 11.15,11.61

COU 2279 AB: 508; 333x: Nice firm split with seeing, white near equal. 
19H 10M 01.22S +42° 24' 37.8" P.A. 125 SEP 0.7 MAG 10.34,10.58 SP F5

WFC 218 AB: 508; 205x: Nice near equal white
19H 12M 29.46S +44° 47' 18.2" P.A. 352 SEP 9.5 MAG 9.85,10.16 SP A5

BRT1923 AB: 508; 205x: Near equal white, ~4".  Not physical
19H 15M 21.46S +43° 21' 31.8" P.A. 187 SEP 3.8 MAG 10.20,10.30 SP A2

ES 1562 AB: 508; 205x: Easy wide ~6", ~1 delta
19H 19M 16.98S +42° 17' 02.3" P.A. 325 SEP 6.2 MAG 9.39,9.80 SP G

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