Pi (Struve 2583)
Mary Flanagan
Star:  Pi (Struve 2583)
Date & Time: 04 Sep 2002 00:01 CDT
Seeing: 7 <1-10 Seeing Scale (10 best)>
Transparency: 6 <1-10, 10 best>
Location of site: Apple Valley MN, USA
93d 14m 25s W; 44d 45m 17s N
Site classification: Suburban
Sky darkness: 3 <Limiting magnitude>
Telescope: 12.5" f/5 Starmaster Dob
Eyepiece(s): TV Plossls: 50mm, 15mm,
11mm; Celestron Lanthanum 5mm
Magnification: 144x, 318x		 @144x, I could just see elongation with blue at one end and gold at the 
other. There was a paler blue and yellow figure eight on this pair @318x, and 
when I stayed with it, I finally spotted a hairsbreadth of black between them 
in a couple of brief moments of steadier seeing. The image was a bit bloated 
and washed out at this magnification, but I'm not complaining!
 
 
 
 
 
 

 

 
Steve Bodin
Star: Pi (Struve 2583)
Date & Time: 4 Sep 2002 9pm to midnight
Seeing: 7->4 <1-10 Seeing Scale (10 best)>
Transparency: fair
Location: Silverdale WA, USA
47N,123W
Site classification: Suburban
Sky darkness: 5.7 <Limiting magnitude>
Telescope: Celestron C8
Imaging: PC164 videocamera, 3x barlow
Eyepieces: 3x barlow, 19mm televue wide field
Magnification: 315x
: 		 One of my 'must see' double during this season. The components seemyellow to my old eyes, sorry no blue no matter how hard I try. The WDS lists afaint north preceding star as AC. Measured: 1.34 sec at 109 deg PA, AC imagedlast month with the 17 in at 36.2 sec, 299 deg PA.
 
  
 

 
Luis Balanzino
Star: Pi (Struve 2583)
Date & Time: Tue Sept 3, 2002, 21h to 23h UT 
Seeing: 6 <1-10 Seeing Scale (10 best)>
Transparency: 5 <1-10 Seeing Scale (10 best)>
Location: Göteborg, Sweden
57°43' N, 11°58' E 
Site classification: Suburban
Sky darkness: 4-5 <Limiting magnitude>
Temperature: 15º C 
Moon: None
Telescope: Russian TAL-1 equatorial reflector 110mm f/7.3 
Eyepieces: 25mm and 10mm TAL Super Plossl, 15mm TAL Kellner, 3x TAL Barlow 
Magnification: 32x, 54x, 80x, 97x, 161x, 240x
 		 After failed with some tight doubles, I try with this well-known close pair. The 1.4" of separation is close to my scope's limit, but both stars are of similar magnitude. At 80x and 97x, I can't detect the duplicity, but 161x reveals two very close stars, barely separated. Try to 240x but the conditions aren't so good and the image is blurry. Both stars look white 
 
 
 

 

 
Bob Hogeveen 
Star: Pi (Struve 2583)
Date & Time: September 5, 2002
Seeing: 7 <1-10 Seeing Scale (10 best)>
Transparency: 4 <1-10 Seeing Scale (10 best)>
Location: Annen, The Netherlands
53N, 6E
Site classification: Village backyard
Sky darkness: 3.5 <Limiting magnitude>
Moon: None
Telescope: Intes MK67 (6" f/12 MCT)
Eyepieces: Pentax SMC XL 40mm, TV plossl 20mm, plossl 10mm, LV 5mm
Magnification: 45x, 90x, 180x, 360x
Harshaw Scale: 3 <1-5; 1 best>		 An interesting target for this scope under these circumstances. Bright enoughto stand high power, which is needed to split it properly. At 180x the pair canbe split, but not easy. Without confirmation of views at higher power the viewis somewhat uncertain.Confirmation of the view came with 360x, at which the pair is obvious and easy.A is deep-yellow, B also seemed to be yellow, but was hard to say for sure.

(c) 1998-2002 The Spirit of 33