Struve 3060

 
Richard Harshaw 
Star: Struve 3060
Date & Time: September 5, 2001,
0230 to 0510 UT
Seeing: 6 <1-10 Seeing Scale (10 best)>
Transparncy: 6 to 7 (variable, due to high hazy clouds) <1-10 Seeing Scale (10 best)>
Location of site: Northern Kansas City,
Missouri (USA). 39º15' N, 94º30'W
980 ft above Mean Sea Level
Site classification: suburban 
Sky darkness: -- <Limiting magnitude>
Telescope: Celestron C-8, C-11
Magnification: 112x, 311x
Harshaw Scale: 4 <1-5; 1 best>		 HD Number 113
 SAO Number 91707
 ADS Number 60
Position:  0006+1804  Rating:  4
Components:
 A:  8.2m, K0
 B:  9m, K0, 3 -” @ 127 + 
 C:  11.4m, 77” @ 265 
Year of last AB Measure:  1975
Distance (l.y.): 127, Luminosity (Suns): 1.034
Observed colors:  W, B, ?, 

Observations: Moderate field.  Observed at 311x.  Split at 112x.

Notes: First measure 3.9" @ 111.  1914 (Phillips), PA of 122.
The stars share a large common proper motion.
 

 
Jim Phillips
Star: Struve 3060
Date & Time: Oct. 17, 2001
Seeing: 5-6 <1-10 Seeing Scale (10 best)>
Location of site: Hodges, South Carolina, USA
Site classification: Suburban.
Temperature: 59ºF
Sky darkness: --- <Limiting magnitude>
Telescope: AP 9" F/15 Apochromat
Magnification: ---		 Very nice close white double.
 
 
 
 
 
 
 
 
 

 

 
Jim Jones
Star: Struve 3060
Date & Time: 10/18/01
Seeing: 6 <1-10 Seeing Scale (10 best)>
Location of site: Lake Oswego, Oregon
Site classification: Suburban.
Sky darkness: 4.2 <Limiting magnitude>
Sky: New moon + 1 days.
Telescope: 8" LX50
Eye Pieces:  42mm Ultima, 18mm Radian, 7mm Ortho
Magnification: 47x, 112x, 285x		 Est Pa without inst...130d
Two very nearly equally dim stars.  Clean split at 112x.
Another companion STF 3060 AC  (mag 8.9, 11.4 sep 80.6" PA 262d)
that could be seen with adverted vision and the 7mm ortho.

Another brighter and wider double to the south that turns out to be STF 3061(mag 7.8, 7.9 sep 7.8" PA 148d).  It would be easy to mistake this pair for STF3060.

Yet another wide pair to the north.  This one turned out to be a pair of stars separated by about 58".
 
 

 
 
 
Stuart Clough
Star: Struve 3060
Date & Time: 28.10.01 2150 UT
Seeing: 6 <1-10 Seeing Scale (10 best)>
Location of site: Near Halifax
West Yorkshire, England.
Site classification: Suburban
Temperature: 8ºC
Sky darkness: 3.0 (U Mi) <Limiting magnitude>
Conditions: Variable cloud, Wind SW 12/15kts
Telescope: Orion Optics UK GX250
10"  f4.8 Newtonian on Vixen GP mount.
Eyepieces: 12.5mm Plossl,  7.5mm Plossl, x2 Ultima Barlow
Magnification: x92 x160, x192.
      		 Split at x160 and perhaps capable of separation at a somewhat lower power, however the best view was at x192. This object was easy to find in a pleasing, but not spectacular field. 

I saw both stars as deep yellow before advancing cloud put paid to the night's activities.