Struve 1779

Steve Bodin
Star: Struve 1779
Date & Time: 25 May 2005, 10pm to midnight
Seeing: 3/10
Transparency: fair
Location of site: Silverdale Wa, USA, 47N,123W
Site classification: Suburb
Conditions: 55F, no wind, dry
Sky darkness: limiting mag 5.6
Telescope: Celestron C8
Eyepieces: not used
Imaging: DX8263SL video camera at prime focus, f10, and 2x
Magnification: app. 333x and 666x

 Poor view this night due to the horrible seeing. But split at prime focus
by using the 2x zoom function on the videocamera. Measurement, poor, 3.5 sec at 137 deg PA.
 

    


 
   

Alessandro Bertoglio
Star: Struve 1779
Date & Time: 24 May 2005 20.31 UTC
Seeing: III - IV Antoniadi
Transparency:
Location of site: Turin, Italy, 4504N 0742E
Site classification: Urban area with strong light pollution
Conditions: clear, no wind, mild temperature
Moon: full moon rising
Sky darkness: 3 (limiting magnitude)
Telescope: Takahashi Mewlon 300, Dall-Kirkham 300/3572 reflector
Eyepieces: Televue Plossl 15 mm.
Magnification: 238X
Diagonal: Yes, Televue 2" Everbrite
 
Not an easy pair because it's quite faint and unbalanced. Pretty narrow. The primary is still well observable and it's colour is bluish. The secondary, maybe still more bluish, is rather faint but still visible with direct vision although the city sky. No rings detectable. Extimated PA about 145-150 degrees. Fine coloured double suited for medium to large instruments under city skies or for medium telescopes under more favourable conditions.
 


 
   

Florent Losse
Star: Struve 1779
Date & Time: May 25-26th, 2005
Seeing: 4/10
Transparency: very good
Location of site: St Pardon de Conques, France 4433N 0012W
Site classification: Rural
Sky darkness: m=6+
Telescope:
- visual : T115, guidescope suited with a 20mm eyepiece (G=45x)
- imaging : homemade Newt T200, Barlow 3x, Audine K400 (sampling 0"43/px)
Reductions: done with a future release of Reduc.
Eyepieces: 20mm
 Magnification: 45x

 Once again, B not seen in the guidescope. Nice view on the screen. Measured 145°05  /  3"70
 

Stev
Louis Marchesi
Star: Struve 1779
Date & Time: 15 June 2005 2:57 UTC
Seeing: Pickering 5
Transparency: Average
Location of site: New London Township, PA, US (+39d45m,-75d52m)
Site classification: Suburban/Rural
Conditions: Clear, calm, very warm, very humid (almost foggy), the scent of honeysuckle is in the air, 25C (77F)
Moon: 8 days (49% illuminated)
Sky darkness: 3.5 (limiting magnitude)
Telescope: TMB152 f/7.9 Apochromatic Refractor
Mount: Losmandy G-11
Eyepieces: Tele Vue Nagler Zoom at 3mm
Magnification: 400x
  
This pair was faint and difficult. Even with the high magnification, I needed averted vision to clearly see the companion star. Both components were white.
      
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