Tau Andromeda 

Mary Flanagan
Star: Tau Andromeda 
Date & Time: 19 Oct 2000 04:10 UT; 
18 Oct. 11:10 CDT 
Seeing: 8 <1-10 Seeing Scale (10 best)>  
Transparency: 8 <1 - 10> 
Location of site: Apple Valley MN, USA 
93d 14m 25s W; 44d 45m 17s N 
Site classification: Suburban 
Sky darkness: 4 <limiting magnitude> 
Telescope: 8" f/6 Dobsonian  
Magnification: 80x
Primary pale blue.  Had to use averted vision for B, but the little 
beast was definitely there.  No color noted in B. 

 
 

 

 
 
Tim Leese
Star: Tau Andromeda 
Date & Time: 21-October-2000 ( 20:24 UT ) 
Seeing: 6-7 <1-10 Seeing Scale (10 best)>  
Location of site: Cheshire. UK 
53° 15' N –2º 33' W  
Site classification: Suburban  
Sky darkness: 4.4 <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, X60  

 

I observed this system using X120 where I found a white primary star with a very faint secondary at the published PA.  Averted vision was required to observe the secondary so no colour could be seen. Using a magnification of X60 though I could see the secondary using direct vision but still no colour could be detected. 
 

 

 
 
Patrick J. Anway 
Star: Tau Andromeda 
Date & Time: October 31, 2000  03:00 UT 
Seeing: 8 <1-10 Seeing Scale (10 best)> 
Location of Site: Munising Michigan USA 
Site Classification: Rural 
Sky darkness: 6 <limiting magnitude> 
Sky condition: Small crescent moon; no clouds 
Temperature: 38ºF   6ºC 
Telescope: Zeiss 63mm/840mm f/13.3 
Magnification:  53X, 84X 

 
 

Easy to locate just off a line between gamma and beta, at 84X. The primary shown blue-white and the secondary a "dirty"-white; however this may have just been the effect from being dim. 
 
 
 
 
Bill Reinehr
Star: Tau Andromeda 
Date & Time: November 15, 2000,  01:45 UTC   
Seeing: 8+ <1-10 Seeing Scale (10 best)> 
Location of site: Pflugerville, Texas, USA  (30 degrees N.) 
Site classification: Suburban  
Sky darkness: 4.3 <Limiting magnitude>  
Temperature: 44° F. 
Telescope: 102mm f/5 achromat on Vixen Custom D altaz mount. 
Magnification: 23x (22mm Vixen SW) & 45x (22mm Vixen SW with 2x Barlow). 
 
The companion was quite faint but visible at 23x. Far more easily seen at 45x. Primary seemed blue-white to me. No color noted in secondary. 
 

 
 

 
 
Luis and Salvador Lahuerta (G.E.O.D.A)
Star: Tau Andromeda 
Date & Time: 9, December, 2000.
20h – 24 h  (U.T).
Seeing: 7 <1-10 Seeing Scale (10 best)> 
Location of site: Aras, Valencia, Spain. 
GPS coordinates: 39º 55' 28" N (39,92)
 01º 07' 49" W (1,13).
Site classification: Rural 
Sky darkness: 6 <Limiting magnitude> 
Telescope: Meade S/C LX200 10" 
Eyepieces: diagonal prism, MA 12 mm 
astrometric eyepiece (both fromMEADE). 

 

Primary colour: blue
Secondary colour: ??
Separation:  46.5”
PA:  332º