Struve 1810
 
Florent Losse
Star: Struve 1810
Date & Time: May 19-20th, 2005
Seeing: 3-6/10
Transparency: poor, high altitude clouds
Location of site: St Pardon de Conques, France 4433N 0012W
Site classification: Rural
Conditions:
Sky darkness: m=5 between clouds
Moon:
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

 Clouds are growing more and more. The star is just noticed  as single in the guidescope. Surprisingly, some images are good. AB-C measured 187°8  /  2"17
 

Stev

Steve Bodin
Star: Struve 1810
Date & Time: 26 May 2005, 10pm to midnight
Seeing: 5-6/10, degrading to 4/10
Transparency: fair
Location of site: Silverdale Wa, USA, 47N,123W
Site classification: Suburb
Conditions: 55F, no wind, dry
Sky darkness: limiting mag 5.6
Moon:
Telescope: Celestron C8
Eyepieces: not used
Imaging: DX8263SL video camera at prime focus, and 3x
Magnification: app. 333x, 1000x

 Seeing was degrading rapidly and the pair seemed to just turn into a
vertical blur. Poor measure at 2.0 sec 188 deg PA.
 



 

  

Alessandro Bertoglio
Star: Struve 1810
Date & Time: 26 May 2005 20.24 UTC
Seeing: IV Antoniadi
Transparency:
Location of site: Turin, Italy, 4504N 0742E
Site classification: Urban area with strong light pollution
Conditions: clear, no wind, mild temperature, little hazy
Moon: none
Sky darkness: 2.5-3 (limiting magnitude)
Telescope: Takahashi Mewlon 300, Dall-Kirkham 300/3572 reflector
Mount: 10 Micron GM2000 with FS2 controller
Eyepieces: Televue Plossl 8 mm.
Magnification: 447x
Diagonal: Yes, Televue 2" Everbrite

The situation is critical with scarce sky trasparence but with strong power I'm still able to continue my observations. This pair is difficult under these conditions, it's composed by two faint components quite close. Primary whitish still sufficiently visible. Secondary pretty hard to detect with direct vision (averted vision helps). No visible rings. Extimated PA about 185 - 190 degrees (this extimated PA is pretty different from the table PA, maybe the components changed their positions). It's surely an interesting double but calls for best skies.
  



     

Louis Marchesi
Star: Struve 1810
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
        		Again a faint and difficult pair. I needed averted vision to properly detect both stars in this pair. Both stars were white.
    
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