Wednesday, September 26, 2018

great little night

Out again last night with Big Blue, and this time the seeing was better, 7/10.  Went to the Double Double in Lyra first, really good image, so I thought to try 90 Her before it starts to set too late in the evening:

90 Her = BU 130: Yes!  Looks better at 553x, less jumpiness.  Need stillness, it coalesces from the diffraction to a light orange point at 553x (grey at 885x).  No doubt about it, star, point like.  For the first 10 minutes of observing seeing allowed me to glimpse it 1 of every 10 seconds.  But after a while seeing was better and I could hold it pretty consistently in both magnifications.  At 553x it's in the first ring, at 885x it's in the second.
17H 53M 18.03S +40° 00' 28.6" P.A. 110 SEP 1.6 MAG 5.28,8.76 SP K3III DIST. 108.46 PC (353.8 L.Y.)

STF 2282: White and very slightly orange B, 3", half delta mag.  [3 star system, AB and AC all the same mag, but BC is a 0.2" pair with only one observation...]
18H 06M 30.47S +40° 21' 39.6" P.A. 81 SEP 2.6 MAG 7.93,9.43 SP A1V DIST. 512.82 PC (1672.82 L.Y.)

STF 3130: Extremely faint but present DV, white A an blue B, 4" 3-4 delta mag.  Nearby R Lyr a pretty orange.  [AB,C seen; AB 0.4" -- try again!]
18H 55M 57.14S +44° 13' 41.9" P.A. 258 SEP 2.7 MAG 6.97,10.52 SP A2

Dawes 9: Faint but perfect star images showing.  3 delta mag, ~5".  B as bright as BU 130B?

16 Lyr = HJ 1362: Faint star at edge of DV/AV, fairly well separated.
19H 01M 26.36S +46° 56' 06.1" P.A. 289 SEP 46.9 MAG 5.01,10.60 SP A7V

Dju 4 = 13 Vul: Very bright white A and 3- delta mag B, ~1.5-2", west PA (platform ended its cycle so no tracking). 
19H 53M 27.69S +24° 04' 46.6" P.A. 246.8 SEP 1.37 MAG 4.63,7.37 SP B9.5III DIST. 102.56 PC (334.55 L.Y.)

No comments:

Post a Comment