21 + 22 Tauri 

Tom Teague
Star: 21 +  22 Tauri 
Date & Time: 2000/11/13 (00:10UT) 
Seeing: -- <1-10 Seeing Scale (10 best)>. 
Location of site: Chester, England (53 11 08N; 02 51 39W) 
Site classification: Suburban  
Sky darkness: Moon just past full. 
Conditions: Cold, mainly clear.  
Binocular: 8 x 30W Zeiss Jenoptem binocular (hand-held) 
  
 
A delicate pair in the Pleiades (probably the best binocular field in the sky!).  I suspected a bluish hue to each star, but I may have been unconsciously influenced by the brighter stars in the field, which I always see as blue-white.  Surprisingly faint pair, but the Moon is close by. 
 
 
 
 
Bill Reinehr
Star: 21 +  22 Tauri 
Date & Time: November 15, 2000, 2:15 UTC  
Seeing: 8 <1-10 Seeing Scale (10 best)> 
Location of site: Pflugerville, Texas, USA  (30 degrees N.) 
Site classification: Suburban  
Sky darkness: -- <Limiting magnitude>  
Conditions:  Clear  - Better than average. 
Temperature: 44° F. 
Binocular: Orion 8x42 (handheld & mounted) 

 
 

Part of M45 (the Pleiades). Fairly easy even hand holding the 8x42s but much more attractive when the binoculars are mounted. 
 

 

 
 

 
 
Eddy O'Connor
Star: 21 +  22 Tauri 
Date & Time: November 22nd  2000. 
10.30 -11p.m local; UT +11 
Seeing: 5-6 <1-10 Seeing Scale (10 best)> 
Transparency: 7/10, (Northern sky to 
mag. 4.5; Southern to 5.5) 
Temperature: 18ºC 
Other Conditions: Still; high humidity after rain. 
No Moon 
Location of Site: Terara, New South Wales 
Australia,  S34.52, W150.38 degrees. 
Site Classification: Suburban 
Sky darkness:  <Limiting magnitude> 
Binoculars: 7X35 Tento. 25X100 Somet 
HS: 3 
HS= Harshaw Scale1-5 (1 best) 
 
Known as Asterope, lie just below(for me) the triangle of 16,19 and 20 Tau. Their wide separation of 168" makes them reachable with the naked eye were it not for the misty haze of their companions. 

While my 7X35 Russian-made Tentos reveled both stars clearly, the Somet 25X100 showed the marked colour difference of the 5.6 mag. Tau 21 as Whitish yellow and the fainter Tau 22 of  6.4mag as Whitish blue. Their light shimmers as through clouded gauze. 
 

 
 

 
 
Jim Jones
Star: 21 +  22 Tauri 
Date & Time: 0935 UTC, 11/28/00  
Seeing: 6 <1-10 Seeing Scale (10 best)> 
Location of site: Lake Oswego, Oregon  
Site classification: Suburban 
Sky darkness: 4 <Limiting magnitude> 
Temp:  cold 
Binocular: 7x50 Nikon (hand held) 
 
 
 
The double 21+22 Tau is located on the northwestern edge of the Pleiades, one of the great objects to view through binoculars.  I was very lucky to observe this double tonight.  At mag 5.6/6.4 the double was very, very dim and intermitant. Separation was about half that of 27+BU. 
 
Viewing through a high haze and against a significant light bubble, Eta Tau with it's mag 8 companions  was simply out of the question tonight. 
 
The Pleiades is one of my favorites and I always enjoy poking around.  They always look to me like someone took a handful of diamonds and threw them out on black velvet. 
 
This fall I identified a dozen doubles in or near the Pleiades to observe as a personal project.  The doubles arn't all that impressive but I enjoy running my fingers through the diamonds. 

Very brisk this morning.  You didn't want to stay out too long but a little while is very nice.  The ever present Portland light bubble makes the sky look like cottage cheese but at this hour  most of the neighbors have turned off their monster porch lights. Winter has 
definitely arrived 
 

 
 
Glen Chapman
Star: 21 +  22 Tauri 
Date & Time: 29/12/00 21.35 UT +10h 
Seeing: 6, improving <1-10 Seeing Scale (10 best)> 
Location of site: Sydney, Australia 
Site classification: Suburban 
Sky darkness: 4.69 improving to 5.37 <Limiting magnitude> 
Binocular: 7 x 50 binocs  
 
Easy split however required averted vision to detect both components. Found at the base of a christmas tree asterism. Would be seen as an inverted V by northern observers. 
 

 

 

 
 

 
 
Thad Robosson
Star: 21 +  22 Tauri 
Date & Time: 1-17-01, 3:30 - 5:30 UT
Seeing: 4~5 <1-10 Seeing Scale (10 best)>
Weather: clear, but quite chilly at 45°F
(Hey, it's cold to us....)
Location of Site: Phoenix, AZ
112 08.029w, 33 32.674n
Site Classification: Suburban 
Sky darkness: -- <Limiting magnitude> 
Transparency: 3~4/10
Binoculars: 10x50 on homemade bino mount. 
Both were fainter than the brighter stars in this cluster.
Both have a blue tinge to them, but the comp. is the stronger tint of the 2.
PA near 310°.
 
 
  

Paolo Morini

Star:21+22 Tau
Date & Time: Nov 19, 2000, 21:45 UTC 
Seeing: --
Location of site: home, Ravenna, Italy
Site classification: Urban backyard 
Sky darkness: 4<Limiting magnitude> 
Conditions:--
Temperature: 8° C
Binocular: Canon IS 15x45

Very easy split in the magnificient Pleiades background