Struve 1426

Florent Losse
Star: Struve 1426
Date: April 6th and 7th 2006
Time:
Seeing: 8 of 10
Transparency: very good
Location of site: 4433N 0012W
Site classification: Rural
Conditions:
Sky darkness: m lim=6
Telescope: Homemade Newton 8" used at EFL=4.70 m
Imaging device: Audine CCD (KAF400)
Imaging software: Pisco
Reduction: Reduc v3.62
Eyepieces: Visual notes with the 120mm guidescope and 20mm eyepiece
Magnification: 50x

 
Star: Struve 1426
Date: April 10th 2006
Time:
Seeing: fair
Transparency: good
Location of site: 4433N 0012W
Site classification: Rural
Conditions:
Sky darkness: m lim=6
Telescope: Homemade Newton 8"
Imaging device: Audine CCD (KAF400)
Imaging software: Pisco
Reduction: Reduc v3.62
Visual : 120mm refractor, 7.5 mm and 5mm eyepieces
Magnification: 50x
An other surprise star ? The project indicates a 0"8 couple. Wow my guidescope splits the double at 50x :-)
A check in the WDS shows a C component 8" Northward. No, my guidescope isn't so good !
AB is not seen on the greatly undersampled  images for a sub-arcsecond star. AB-C is a nice couple visually. Measurement of AB-C : 010°6 / 7"61
 


 
 

STF1426 : observed the 7th. No hint of duplicity for the AB couple. WDS says that here is a sub-arcsecond nut. A double Barlow mounting (3x + 2x) should show at least an elongation. After a long imagery session and three set of images with different exposure time I get finally some images showing the tight couple. Here are the measurements :
set 1 : 317°0 / 0"98
set 2 : 312°6 / 0"99
set 3 : 317°4 / 0"97
Mmmh ... surely off at least for PA. These focals are really hard to manage
! Never mind I have a souvenir.

    
      

Morgan Spangle
Star: Struve 1426
Date: 15 April 2006
Time:
Seeing: 7 <1-10 Seeing Scale (10 best)>
Transparency: 7 <1 worst - 10 best>
Location of site: Larchmont, NY  40.55.26N 73.44.45W
Site classification: suburban
Conditions: breezy, clear, temp: 50-42 deg
Moon: Nearly full, rising
Sky darkness:  <Limiting magnitude>
Telescope: C9.25 SCT
Mount: Takahashi NJP Temma 2
Eyepieces: SBIG ST2000XM
Magnification: n/a
Diagonal: n/a
   
AB-C:    7.5"    11.2°
1426 AB-D:   38.8"   41.1°
      

Richard Jepeal
Star: Struve 1426
Date: April, 19th, 2006
Time: ---
Seeing: 5-6/10
Transparency: ---
Location of site: New Britain, Connecticut
USA
Site classification: Urban
Conditions:
Sky darkness: ---
Telescope: 8in Celestron Nexstar
Eyepieces: ---
Magnification: 228x

 Primary looks a little bluish.  Moon nearby.
         

Steve Bodin
Star: Struve 1426
Date: 27 Apr 2006
Time: 10pm to 11pm
Seeing: 4-5/10
Transparency: good
Location: Mattawa Wa, USA, 46.7N,119.9W
Site classification: Rural
Conditions:
Sky darkness: limiting mag 6.5
Telescope: Meade 16 inch LX200GPS UHTC
Eyepieces: not used
Imaging: Orion Starshoot CCD at f3.45 with reducer and DX8263SL video camera at f10 and f30
Magnification: app. 200x ,600x, 1800x

 Fine triple with the AB pair close in magnitude and distance. All looked on the blue side to my camera. Measurements: AB 0.813 sec at 307.8 deg PA, AC 7.39 sec at 007.0 deg PA.

  

     

Mike Sutherland
Star: Struve 1426
Date: 4 May 2006
Time: 9:00pm to 10:30pm PDT
Seeing: 5 <1-10 Seeing Scale (10 best)>
Transparency: below average
Location of site:Beaverton Oregon, US
45 28N, 122 51W
Site classification: Suburban
Conditions: 60F, dry
Sky darkness: 3 <Limiting magnitude>
Telescope: Takahashi FS128
Eyepieces: 30mm Ultima, 9mm ortho, 7.5mm LE, 6mm ortho, 5mm LE, 4mm ortho, Barlow.
Magnification: 35x, 116x, 139x, 173x, 208x, 260x, 305x
    		9:36pm PDT: This one fooled me until I read reports from others. I thought the given statistics were wrong on this easy double until I realized I was looking at A-C instead of A-B. A-C was really nice at 116x but A-B was too tough for the given seeing conditions.

      
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