Struve 1843

Tim Leese
Star: Struve 1843
Date & Time: 11 May 2005, 22:20 UT
Seeing: 7-6 <1-10 Seeing Scale (10 best)>
Transparency:  <1 worst - 10 best>
Location of site: Northwich, Cheshire. UK.
(53° 15' N -2º 33' W).
Site classification: Suburban
Sky darkness:  <Limiting magnitude>
Conditions: High haze drifting by from time to time, Moon, nice view.
Telescope: 200mm f/6 Newtonian reflector
Mount: Vixen GP
Eyepieces: 30mm Ultima, 9mm Orthoscopic, 5mm Lanthanum.
Magnification: X40, X133, X240
 
30mm Ultima-------------A splendid view of this double set in nice backdrop of stars surrounding this double system. Well separated at this magnification.

9mm Or--------Appears to be located a one point of a triangle of stars. Primary appears to be white. Companion was well separated but no colour was established. Visual estimate of PA was on a N-S line at 180 degrees. AC was seen as one of the stars forming the triangle at an estimated PA of 60 degrees.


Florent Losse
Star: Struve 1843
Date & Time: May 23-24th, 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

 Amazingly bright and easy in the high cirrus. Measured  187°3 /19"72 
 

Stev
Alessandro Bertoglio
Star: Struve 1843
Date & Time: 26 May 2005 22.35 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 15 mm.
Magnification: 238X
Diagonal: Yes, Televue 2" Everbrite

Easy pair rather separate. Primary star pretty bright, white with slight blue tone. Secondary considerably fainter but still well visible, with the same colour of the primary. Faint rings sometime visible. Extimated PA about 195 degrees (also this pair seems changed its position as my extimated PA is different from PA on the table). Not very interesting.

 
 

        
 
Steve Bodin
Star: Struve 1843
Date & Time: 27 May 2005, 10pm to midnight
Seeing: 4-5/10
Transparency: fair
Location of site: Silverdale Wa, USA, 47N,123W
Site classification: Suburb
Conditions: 60F, no wind, dry
Sky darkness: limiting mag 5.6
Moon:
Telescope: Celestron C8
Eyepieces: not used
Imaging: DX8263SL video camera at prime focus, f10
Magnification: app. 333x

 Easy wide unequal pair, brighter than most in the project. Measured, 20.42
sec at 187.6 deg PA.
 

   

William Schart
Star: Struve 1843
Date & Time: June 11, 2005
Seeing: Steady
Transparency:
Location of site: Texas,USA
Site classification: Suburban
Sky darkness:
Moon: crescent moon
Telescope: Celestron C8
Eyepieces:
Magnification:
Some magnitude difference. The secondary lies just a bit west of south. Primary is white, can’t tell about the secondary. Together with 2 other stars, the primary forms an isoseles triangle pointing more or less north.


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