Struve 3064 

Richard Harshaw
Star: Struve 3064 (HD 290; SAO 53661; ADS 82) 
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, Oct 17, 2000 
Site classification: suburban 
Sky conditions: 
seeing-- 8 out of 10 
transparency-- 7 out of 10 
limiting visual magnitude-- 4.5 mag 
Telescope: Celestron C-8 
Eyepiece: 20mm Erfle (104x) 
 
 		 Sep/PA's:  25 + / 3 + 
Year of last measurement:  1982 
Distance (light years):  322 
Luminosity (in suns):  19 
Eyepiece and magnification:  20mm Erfle (104x) 
Colors noted:  Y and B (bordering on dB). 

This pair lies in a very nice field, including a 7.4m star about 
10' south (SAO 53660). 
 
I'd rate the pair 3 out of 5, but Hipparchos/Tycho data show different distances for these stars; they may be an optical system. 
 

 
 
 
Thad Robosson
Star: Struve 3064 (HD 290; SAO 53661; ADS 82) 
Location of site: Flat Iron observing site 
Date of observations (UT): Nov 18(19)th, 2000 
from 2:00 to 9:30 
Site classification: Rural 
Seeing: 7 <1-10 Seeing Scale (10 best)> 
Sky darkness: 6.2 <Limiting magnitude>  
Telescope: 90mm Meade ETX on 
an AltAz mount. 
Eyepiece(s): 32mm Meade Super Plossl, 
15mm & 10mm Vixen Lantanum, 2x shorty barlow. 
Magnification(s): 39x, 83x, 125x, 166x, 250x 
 		 39x-Nada.  166x the comp showed up and could be seen directly, but much better with averted. No colors and an obviously unequal pair.  (forgot the PA est...). 
 
Ambience...other than us thin-skinned Arizonans' teeth chattering, there is little to report except for a wonderfully quiet night with the occasional car noises on a lonely desert road about 1.5 miles in the west.  However, gunshots were noted at 10pm as someone stopped and took target practice at a sign of some sort on the road.  I don't think that there's a sign on that road that isn't riddled with bullet holes. (And no, I'm not kidding about the gunshots or the signs...I'd be happy to 
provide some pictures sometime.) 

The soft (harsh after dark adaptation kicks in...) glow of Phoenix is hid somewhat behind the White Tank mountains to the east, but Orion still needs to be near the meridian to be at perfection. 
 
 

 
 
 
Ilario Melandri
Star: Struve 3064 (HD 290; SAO 53661; ADS 82) 
Date & Time: 1 nov 2000 , 20.02 UT 
Seeing: 6 <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: 4.5 <Limiting magnitude> 
Temperature: +9C 
Telescope: 150 mm f/15 achromatic refractor (lens by Romano Zen, Venice). 
Magnification: 140x (Plossl 16mm) 
 		  
  
 
 
Susan Delaney
Star: Struve 3064 (HD 290; SAO 53661; 
ADS 82) 
Date & Time: 2000-11-21 
(02:00 - 04:30 UT) 
Seeing: 8 <1-10 Seeing Scale (10 best)>. 
Transparency: 9/10 
Temperature: 32 F, w/wind chill 14 F 
Location of site: Fairfield, CT, USA  
Site classification: Suburban   
Sky darkness: 4.7 <Limiting magnitude> 
Telescope: Discovery 10" DHQ f/5.6 Dobsonian 
Eyepieces and Magnification: 
5mm Radian (284x), 10mm Plössl (142X), 
22mm Nagler (64x)  
 		 As with the Otto Struve 514 At 142x, the secondary star was much fainter than the primary. Again the primary appeared very pale yellowish-white with the secondary a bluish whitish hue to my eye.