Psi Cygnus 

Pino Bandini
Star: Psi Cygnus 
Location of site: Ravenna, Italy 
Date of observations (UT): 06/07/2000 – 21.27 UT 
Site classification: Urban 
Sky conditions: 
Seeing: 6 (10 best) 
Temperature: 28C 
Limiting visual magnitude: -- 
Telescope: Celestron C8 
Magnification: 127x (Erfle 16 mm + diag) 
 
 		  
 
 
 
Ilario Melandri
Star: Psi Cygnus 
Date & Time: 07/07/2000 – 00.35 UT 
Seeing: 5 <1-10 Seeing Scale (10 best)>  
Location of site: Italy, Ravenna, San Romualdo, Lat 44 32’N Lon 12 08’E 
Elevation: 0 m 
Site classification: Rural  
Sky darkness: 4 <Limiting magnitude> 
Temperature: 21C 
Telescope: 150 mm f/15 achromatic refractor (lens by Romano Zen, Venice). 
Magnification: 140 x (eyepiece Clave Plossl 16 mm) 
 		  
 
 
 
William L. Schart
Star: Psi Cygnus 
Date & Time: 7/19/00 12:00 am CDT 
Seeing: 6  <1-10 Seeing Scale (10 best)> 
Location of site: Killeen, TX (Lat 31 N, Elev 600 ft) 
Site classification: Suburban 
Sky darkness: 4 <Limiting magnitude> 
Telescope: Orion 6" Dob. 
Magnification: 32x, 72x, 120x, 98x		 I am pretty sure that I was looking at the right star, but am not very sure that I saw any evidence of duplicity. There might have been some elongation at 120x, but it also could have been my eye playing tricks on me. 
 
 
 
 
Richard Harshaw
Star: Psi Cyg 
Location of site: Northern Kansas City, Missouri (USA). 94d 30m west longitude, 39d 15m north latitude 
980 ft above Mean Sea Level 
Date of observations (UT): 03:30 on 26 July, 2000 
Site classification: suburban 
Sky conditions: 
Seeing--  6 out of 10, but highly variable 
Transparency--  6 out of 10 
Limiting visual magnitude-- 4.0 
Telescope: Celestron C-8 
Eyepiece: 7.4 mm Ortho + Barlow, 697x 
 
 
 		 Magnitudes: 4.91 (A4 Vn), 7.47, 13.6, 10.2 
Sep/PA's: AB = 2.9" - / 176 -. AC = 21.3" + / 55 nc. AD = 165" + / 61 -. 
Year of last measurement: 1998 
First measurements: AB (1822) = 3.4" / 185. AC (1908) = 18.8" / 55. AD (1880) = 163" / 62. 
Distance (light years): 289 
Luminosity (in suns): 7,700 
Eyepiece and magnification: 7.4 mm Ortho + Barlow, 697x 
Colors noted: W and L, ??, and W? 

It was barely split at 258x, but viewed at 516. Nice pair. 

Due to the previously misprinting of this star as Phi, I had to consult TheSky to verify I had the right field!. (Phi is not a double star!) 
 
Note: Now the listing is correct! 
 
 
 
John M. Ryan
Star: Psi Cyg 
Date of Observation: 8/08/00 23UT 
Location of Observation: Ciudad Rodrigo, Salamanca, Spain 
40º 36' N, 6º 32'W, Elev. 800 Meters 
Seeing: 5 to 6 (1 - 10, 10 best) 
Transparency: 7 
Limiting Mag. (naked eye): 3.5 
Site classification: Urban 
Instrument: Meade 8"SCT 
Magnification: 167X (12mm plossl) and 400X (5mm ortho)		 Separation (Clear or Touching):Clear 
Magnitude Comment: Secondary somewhat dimmer in accordance with the data. 
 
Color Comment: Primary white with a hint of yellow, secondary pale blue. 
General Comment: Just split this at 167X but it was cleaner at 400X. The primary was dancing around quite a bit. 

 
 
 
Rich Tyson
Star: Psi Cyg 
Date & Time: 8/6/00, 3:50 UT 
Seeing: 5 <1-10 Scale (10 best)>  
Location of site: Robert Mosses State Park, 
Long Island, New York. 
40º 71N, 73º 30W 
Site classification: Suburban 
Sky darkness: 5.5 <limiting magnitude> 
Telescope: 10" reflector 
Magnification: 253x 
  

 
 

 Primary Star blue/white in color. Secondary Star Blue/Gray? in color. 
 
 
 
 
Jim Jones
Star: Psi Cyg 
Date & Time: 0525 UTC, August 15, 2000 
Seeing: 6 <1-10 Seeing Scale (10 best)> 
Location of site: Lake Oswego, Oregon, USA  
Site classification: Suburban 
Sky darkness: 4.2 in Lyra (almost full moon) <Limiting magnitude>  
Telescope: 8 inch LX50 SCT 
Eye Piece(s): 18mm Radian/ Ultima 2x Barlow 
Magnification: 224x/336x 
 		 Clear but messy split at 224x.  Very clean 
split at 336x. 
Primary...White 
Companion...Unknown 
Est PA 180d without insturmentation 
 

 
 
 
 
Tim Leese
Star: Psi Cyg 
Date & Time: 19- Aug-2000 
(20:30UT-23:15UT ) 
Seeing: 6/7 <1-10 Seeing Scale (10 best)>  
Location of site: Cheshire. UK 
Site classification: Suburban  
Sky darkness: 4 <Limiting magnitude>  
Telescope: 200mm f/6  Newtonian 
mounted over a Vixen GP mount (manual slow motion). 
Magnification: X240, X120,X360 
 
 
  
 		 I needed to use X240 magnification  to observe a white primary with the secondary located at the published list. I also observed a clean split using X360 but the seeing 
ensured an unsteady view. 
 
Using X120 the secondary popped into view in moments of steady air. 
Even though a tight split, using X120 magnification seemed to give the best view. 
 

 

 
 

 
 
 
 
Tom Teague
Star: Psi Cyg 
Date & Time: 2000 August 24 (2300 UT)
Seeing: 7 <1-10 Seeing Scale (10 best)>. 
Location of site: Chester, England (53 11 08N; 02 51 39W) 
Site classification: Suburban  
Sky darkness: 4 <Limiting magnitude> 
Telescope: 63mm Zeiss Telementor refractor 
Magnification: x34, x84, x140 and x210
 
 		 Beautifully separated x84, but not split x34.  A lovely delicate pair, with an estimated PA of between 165 and 170 degrees.  No colours.  Best seen x140.