19 Cygnus 

Pino Bandini
Star: 19 Cygnus 
Location of site: Ravenna, Italy 
Date of observations (UT): 06/07/2000 – 21.09 UT 
Site classification: Urban 
Sky conditions
Seeing: 6 (10 best) 
Temperature: 28C 
Limiting visual magnitude: -- 
Telescope: Celestron C8 
Magnification: 81x (plossl 25 mm) + diag 
 
 
 
 
 
 
Ilario Melandri
Star: 19 Cygnus 
Date & Time: 06/07/2000 – 23.48 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) 
 
 
 
 
 
Richard Harshaw
Star: 19 Cygnus 
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 24 July, 2000 
Site classification: suburban 
Sky conditions
Seeing--  6 out of 10, but highly variable 
Transparency-- 8  out of 10 
Limiting visual magnitude-- 4.8 
Telescope: Celestron C-8 
Eyepiece: 20mm, 104x, with mask 
 
 
Magnitudes: 5.1 (M2 III), 10.0 
Sep/PA's: 55" / 106. 
Distance (light years): 640 
Luminosity (suns): 300 
Eyepiece and magnification: 20mm, 104x, with mask 
Colors: Y!! and ??. 
 
B was pretty difficult, even with the mask. There is a scintillating field just to the south. Bright (6 mag) SAO 68909, to the west, is a pest!! 
The primary is an infra-red source. 
The companion is optical. 
There is another optical companion of 10.8 mag 22" away in PA 11. 
 

 
 

 
 
Bill Reinehr
Star: 19 Cygnus 
Date & Time: August 3, 2000,  05:15 UTC  
Seeing: 7+ <1-10 Seeing Scale (10 best)> 
Location of site: Pflugerville, Texas, USA  (30 degrees N.) 
Site classification: Suburban  
Sky darkness: 4.0 <Limiting magnitude>  
Temperature: 78F 
Telescope: Vixen 80mm Fluorite, f/8 on Custom D altaz mount 
Magnification: 104x, 142x (6mm Vixen Lan, 9mm Vixen Lan & 2x Barlow) 
 
Very difficult to see mag 10 component with direct vision at 104x. Slightly easier but still tricky at 142x. Primary appeared to be a rich yellow. 
 
 
 
 
John M. Ryan
Star: 19 Cygnus 
Date of Observation: 8/08/00 23:45UT 
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: 100X and 167X
Magnitude Comment: Secondary somewhat dimmer in accordance with the data. 
Color Comment: Both white 
General Comment: Fairly wide double made an easy split. 
 
 

 

 
 
Tim Leese
Star: 19 Cygnus 
Date & Time: 11/12 Aug 2000 (21:00UT- 01:00UT) 
Seeing: 6-7 <1-10 Seeing Scale (10 best)>  
Location of site: Cheshire. UK 
Site classification: Suburban  
Sky darkness: 3, moon ( low in sky ) <Limiting magnitude>  
Telescope: 200mm f/6  Newtonian scope  mounted over a Vixen GP mount (manual slow motion). 
Any Quoted PA or SEP using micro guide 
Magnification: X120, X240 X324 
  
 
This system was observed using X120 and X240 to be yellow/orange for the primary and pale blue for the faint secondary. 
 
Even though difficult I used the micro guide at X324 and Toms drift 
method to measure the PA of the secondary to be 113.5 deg with 
a separation of 53.5 sec. 

 

 
 

 
 

 
 
Jim Jones
Star: 19 Cygnus 
Date & Time: 0530UTC August 17, 2000   
Seeing: 6 <1-10 Seeing Scale (10 best)> 
Location of site: Lake Oswego, Oregon, USA  
Site classification: Suburban 
Sky darkness: 4.0 Full Moon <Limiting magnitude>  
Telescope: 8 inch LX50 SCT 
Eye Piece(s): Ultima 42mm  
Magnification: 47x 
  
 
Companion very dim.  Probably very close to the limiting magnitude (10.0) this evening. 
 
Asterism of 5 stars just below double looks like a flying sea gull to me. 
Est PA without insturmentation 110d 
Primary Yellow-Orange 

 
 

 
 
Luis and Salvador Lahuerta (G.E.O.D.A)
Star: 19 Cygnus 
Date & Time: 21th Sep 2000
Seeing: 7 <1-10 Seeing Scale (10 best)> 
Location of site: Manises, Spain
39º 29' 36" N // 00º 27' 56"
Site classification: Urban to suburban
Sky darkness: 4 <Limiting magnitude> 
Telescope: Meade S/C LX200 10"
Eyepieces: diagonal prism, MA 12 mm
astrometric eyepiece
 
Primary colour: yellow - orangish
Secondary colour: white - bluish
Separation: 54.8”
PA: 114º
Comments: None