Struve 1826

Alessandro Bertoglio
Star: Struve 1826
Date & Time: 24 May 2005 22.14 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: pretty fastidious full moon
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
 
Triple not difficult but with the third star quite faint. These stars create an acute triangle with the vertex on the faintest star. The two brighter stars are fairly closed, the third is pretty more away. The primary is rather bright and white-yellowish, the secondary is gently fainter (extimated defference about 0.5 mag. or slightly more) and its colour is light-orange. Finally the third star is considerably fainter but still detectable with the direct vision. Its colour is obscure. No rings visible. Extimated PA: A-B 300 to 305 degrees, A-C about 175 degrees. A fairly interesting triple. It could be easy with every telescope but the third star is dim.
 


 
     

Florent Losse
Star: Struve 1826
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

 Just splitted with the guidescope. I wasn't sure and made a draw. After verification, it's ok, my eye didn't lie. Measured 311°8/4"41
 

Stev
Steve Bodin
Star: Struve 1826
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

 Tight primary pair, and a mystery secondary, project has it a 355 deg and
I found no star there, but a dim mote is at 175 deg PA. Review of my WDS
data shows a 1906 measure of 42.8 sec at 176 and a 1914 measure of 43.7 sec at 355, obviously one measure is 180 out. Damn those inverting telescopes!. Measured, AB 4.68 sec at 311.9 deg PA, AC 43.81 sec at 175.9 deg PA.
 

 

  

Morgan Spangle
Star: Struve 1826
Date & Time: May 29-30, 2005
Seeing: 4/5
Transparency: 2/5
Location of site: Larchmont, NY
40 55N 73 44W
Site classification:
Conditions: steady, calm, high haze, passing clouds
Sky darkness:
Telescope: Borg 101ED fl: 640mm
CCD Camera: ST237A, 2.39 pixels/arcsec
FOV 25 x 19'
Eyepieces:
Magnification:

 AC  44.5" - 172 DEG


 


Louis Marchesi
Star: Struve 1826
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: TMB Super Monocentric 8mm, Tele Vue Nagler Zoom at 3mm
Magnification: 150x, 400x
        		I saw the AB pair fairly easily at 150x. Both stars were white. After I boosted the magnification to 400x, I saw what I mistakenly took for the C star, but I think it was actually at 12.4-magnitude field star. Apparently my telescopic limiting magnitude tonight was just limited enough that I could not see the C star.
    
(c) 1998-2005 The Spirit of 33