Struve 2945

 
Richard Harshaw 
Star: Struve 2945
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: 5 <1-5; 1 best>
HD Number 216109
ADS 16292
Position:  2250+3118  Rating:  5
Components:
 A:  8.2m, F0
 B:  8.8m, 4” @ 296 + 
Year of last AB Measure:  1971
Distance (l.y.): 393, Luminosity (Suns): 10
Observed colors:  W, Y 

Observations: Observed at 112x.  W and oW.  It looked nicer at 311x, however.  It lies in a nice faint line of stars that runs ENE to WSW.

Notes: First measure 3.9" @ 293.
 


 
Jim Jones
Star: Struve 2945
Date & Time: 09/07/01   0630 UTC
Seeing: 5 <1-10 Seeing Scale (10 best)>
Location of site: Lake Oswego, Oregon
Site classification: Suburban
Sky darkness: 4.0 LM
Sky:  Full moon + 5 days.
Telescope: 8" LX50
Eye Pieces:  18mm Radian
Magnification: 112x
Est PA without inst....300d or 120d
Clear split at 112x.
Two equal, closely spaced stars set in a sparse, dim field.  Quite dim in the face of almost full moon rising above tree line on eastern horizon.
 
 
 

 


 
John M. Ryan
Star: Struve 2945
Date & Time: 12 Sept 2001 ( 21:30 UT)
Seeing: 6+ <1-10 Seeing Scale (10 best)>
Location of site: Barreras, Salamanca, Spain.
Site classification: Rural,Suburban.
Conditions: fairly dry but with gusts of wind.
Sky darkness: 5+ <Limiting magnitude>
Telescope: Meade 8" SCT mounted on a Losmandy GM8.
Eyepieces: 20mm plossl, 12mm plossl
Magnification: 100X, 167X 
Harschaw's Escale: 2 <1: Excellent, 5: Poor>
 
 

Star: Struve 2945
Date & Time: 2 Oct. 2001 ( 22:10 UT)
Seeing: 6+ <1-10 Seeing Scale (10 best)>
Location of site: Barreras, Salamanca, Spain.
Site classification: Rural,Suburban.
Conditions: fairly dry but with gusts of wind.
Sky darkness: 3+ almost full moon. lots of light <Limiting magnitude>
Telescope: Televue 101 refracter mounted on a Gibralter Alt-Az tripod.
Eyepieces: 19mm Panoptic, 6mm Radian, 3mm Radian
Magnification: 28X, 90X, 180X
Harschaw's Escale: 2 <1: Excellent, 5: Poor> 

Just split at 100X much better at 167X. Equal magnitudes both white. I liked this one and gave it a rating of 2.
 
 
 
 
 
 
 
 
 
 
 
 

Found this also with the 19mm Panoptic then with the 6mm Radian at 90X I was getting the figure 8. However with the 3mm Radian at 180 I got a nice clean split. Equal magnitudes both white.
 
 
 
 
 
 
 
 

 


 
Jim Phillips
Star: Struve 2945
Date & Time: Oct. 4, 2001, 8:00-9:15 EDT
Seeing: 7 <1-10 Seeing Scale (10 best)>
Location of site: Charleston, South Carolina, USA
Site classification: Suburban.
Temperature: 70ºF
Sky darkness: --- <Limiting magnitude>
Telescope: AP 155 F/7 Apochromat
Magnification
 
Another pair of tiny white jewels. Similar to Struve 2905.
 
 
 
Stuart Clough
Star: Struve 2945
Date & Time: 24.10.01 2050 UT
Seeing: 6 <1-10 Seeing Scale (10 best)>
Location of site: Near Halifax
West Yorkshire, England.
Site classification: Suburban
Temperature: 8ºC
Sky darkness: 3.8 (U Mi) <Limiting magnitude>
Conditions: Variable cloud, Wind SW 8 kts
Telescope: Orion Optics UK GX250
10"  f4.8 Newtonian on Vixen GP mount.
Eyepieces: 9mm Ortho, x2 Ultima Barlow
Magnification: x133, x267
             
Two well matched stars, both seen as yellow with one, (the primary) slightly paler than the other. This object was nicely split at x133. When the Barlow was added the cliché about 
distant headlights on a misty  night really came to life.