Otto Struve 404 

Pino Bandini
Star: Otto Struve 404 
Location of site: Ravenna, Italy 
Date of observations (UT)
Site classification: Urban 
Sky conditions
Seeing: 6 (10 best) 
Temperature: 29C 
Limiting visual magnitude: -- 
Telescope: Celestron C8 
Magnification: 81x (plossl 25 mm) + diag 
 
 
 
 
 
 
Ilario Melandri
Star: Otto Struve 404 
Date & Time: 10/07/2000 – 00.32 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: 5 <Limiting magnitude> 
Temperature: 16C 
Telescope: 150 mm f/15 achromatic refractor (lens by Romano Zen, Venice). 
Magnification: 140 x (eyepiece Clave Plossl 16 mm) 
 
 
 
 
 
Richard Harshaw
Star: Otto Struve 404 
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 
 
 
Position: 2016+5230 
Magnitudes: 7.0, 9.5 
Sep/PA's: 30" / 114 
Eyepiece and magnification: 20mm, 104x, with mask 
Colors: yW and B?? 
The field shimmers and resembles a very faint, grainy open cluster. 

 

 
 

 
 
Jim Jones
Star: Otto Struve 404 
Date & Time: 0542 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 
Magnification: 112x 
 
Companion very dim but I didn't have to dig it out like I did Struve 374.  Good split and view at 112x. 
Primary.....yellow 
Secondary....Unknown 
Est Pa 120d without insturmentation