Struve 221
 
Steve Bodin
Star: Struve 221
Date & Time: 22 October 2005
midnight to 1 am local
Seeing: 5/10 at best
Transparency: fair
Location of site: Mattawa WA, USA 46N 119W
Site classification: rural
Conditions: temp 55F, wind to 10 mph
Sky darkness: limiting mag 6 moon rising
Telescope: Meade 16 LX200GPS
Eyepieces: not used
Imaging: DX8263SL video camera at prime focus
Magnification: app. 600x

 A triple to start, but faint. The C star is very faint maybe dimmer than the 12.3 listed. Measurement, AB 8.41 sec at 146.2 deg PA, AC, somewhat poor, 64 sec at 228 deg PA
 

 
 
  

Louis Marchesi
Star: Struve 221
Date & Time: 30 October 2005
Time: 4:27 UTC
Seeing: Pickering 4
Transparency: Average
Location: New London Township,
PA, US (+39d45m,-75d52m)
Site classification: Suburban/Rural
Conditions: Clear with passing clouds
Sky darkness: Not determined
Telescope: TMB152 f/7.9 Apochromatic Refractor
Mount: Losmandy G-11
Eyepieces: TMB/BO Planetary 4mm
Magnification: 300x

 At 300x I found this to be a pleasant-looking triple. The AB pair were yellow-tinged and red. The C star was white and well-separated from the brighter pair.

      

Eddy O'Connor
Star: Struve 221
Date & Time: Thursday, November 3rd,
2005
Seeing: 7/10
Transparency: 8/10
Location of site: Terara, New South Wales,
Australia, Long.150º.38 ; Dec. S 34º.52
Site classification: rural
Conditions: Temp. 18ºC
Sky darkness: limiting mag 6.5
Telescope: 8" Newt. F9
Eyepieces: 25mm K, 12.5 mm Ortho
Magnification: app. 600x
Harshaw Scale 1-5: 1 best

 Blue white primary and violet companion. Third companion not spotted. HS4


 
  
 
Florent Losse
Star: Struve 221
Date & Time: Nov 05-06/06-07th, 2005
Time:
Seeing: 7 out of 10
Transparency:  out of 10
Location of site: 4433N 0012W 
Site classification: Rural
Conditions:
Sky darkness: limiting mag = maybe 2/3 at very best, <0 at worst !
Telescope:
- visual : 120mm refractor used as guidescope 
- imaging : homemade Newton 8", Barlow 3x with tube extender, Audine K400 (sampling 0"32/px) 
Eyepieces: 20mm,7.5mm 
Reductions: Reduc V3.49

Easily seen in the first part of the night with the refractor. C
is invisible. AB is nice at low magnification. Measurements : 145°5 / 8"44   


        

Mike Sutherland
Star: Struve 221
Date & Time: 19 November 2005
Time: 8:00 pm to 9:30pm PST
Seeing: 5/10 at best
Transparency: fair
Location: Beaverton, Oregon, USA
45.5N 123W
Site classification: Suburban
Conditions: temp 38F, clear and falling temps
Sky darkness: Limit mag ~ 4.0
Telescope: Takahashi FS102
Eyepieces: 32mm plossl, 12.5mm Ultima, 9mm ortho, 7.5mm LE, 6mm ortho,
5mm LE
Magnification: 26x, 66x, 91x, 109x, 137x, 164x

 9:20pm PST. Nice separation at 109x, even nicer at 164x. About the perfect double for tonights poor air. I'm pretty sure the other stars in the FOV were too bright for the C star. No color but nice.

  

William Schart
Star: Struve 221
Date & Time: Friday, 19th, Nov/2005
Time: ---
Seeing: ---
Transparency: ---
Location: Columbia, MIssouri, USA
Site classification: Suburban
Conditions: ---
Sky darkness:  ---
Telescope: Celestron C8
Eyepieces: 25mm, 17mm, 10mm
Magnification:

The AB pair was easy to see and split but the C member was problematic. I thought I could make it out with averted vision but I can't really be sure.
 
Ambience: I could hear geese honking as they flew overhead. There is a modest sized lake just a few hundred yards away where they hang out, so this is not surprising.
  

Morgan Spangle
Star: Struve 221
Date & Time: 11/19/2005 (CCD Observing), 25 November 2005 (Visual)
Seeing:
Transparency:
Location: Larchmont, NY  40.55N 73.44W
Site classification:  Suburban
Conditions: Cold, dry, thin high haze; moonless; steady air
Sky darkness:
Telescope:
C9.25 SCT f/10 (CCD: ST2000XM)
Borg 125ED f/6.4 800mmfl (visual)
Mount: Tak NJP Temma 2
Eyepieces: 30, 24, 18, 12.5, 7.5, 5mm Celestron Ultima, in turret.
UO Klee 2.8x barlow
Magnification:

Visually, it couldn't be resolved. Previously, with CCD:
Measured: AB  8.4 / 145.7
AC  66.7 /227.4

   
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