2 Scorpius 

James T. Hudson 
Star: 2 Scorpius 
Date & Time: Aug. 3, 1998   9:15 to 9:30 EDT 
Seeing: 8 <1-10 Seeing Scale (10 best)> 
Location of site: USA 
Site classification: Suburban 
Sky darkness: <Limiting magnitude> 
Telescope: 4" Vixen Refractor, 5.1" Astro-Physics Refractor, 8" f/8 Newtonian. 
Magnification: 153x, 208x, 216x, 333x 
 
Locating the star was easy since it was close to Pi Sco.  Located about 2 degrees west and slightly north of Pi, 2 Sco. is about 5th mag. and easy to see in the finder.  At 30-50x no indication of a secondary star was visible.  At 153x in the 4" there was a hint that there might be another star close to the primary.  At 208x in the 4" the secondary star was visible but was in the diffraction pattern of the primary, which made it hard to see any detail.  At 216x in the 5.1" the  secondary was not in the diffraction pattern and was clearly visible. 

It appeared to be at a P.A. of about 270 degrees and the separation was slightly less than 2.5" using Epsilon Lyra as a comparison.  In the 8" reflector at 333x the pair showed no discernable color contrast or other distinctive features. This star requires good optics and good seeing to separate because it is low in the sky and has a large difference in brightness between the components. 
 
Colors:  Stars appeared white 
 

 
 
Pino Bandini
Star: 2 Scorpius 
Location of site: Ravenna, Italy 
Date of observations (UT): 19 June 2000 – 21.20 UTC 
Site classification: Urban 
Sky conditions
Seeing: 7 (10 best) 
Temperature: 24C 
Limiting visual magnitude: -- 
Telescope: Celestron C8 
Magnification: 81x (eyepiece 25 mm Plossl) + diagonal
 
 
 
 
Edward Otte
Star: 2 Scorpius 
Date & Time: Thursady, July 13, 2000, 10:30 PM  
Seeing:  <1-10 Seeing Scale (10 best)>  
Location of site: Lodi, NJ = 40.8866 -074.0866 
Site classification: 15 miles west of massive light polluted NYC or as bad as it gets! 
Sky darkness:  4.5 <limiting magnitude> 
Telescope: 8" f/6 Dobsonian 
Magnification: 95x
Both stars are well seperated under the smallest magnifications. Omega1 is a 3.98m, B1 star while Omega2 is a 3.56m, G2. 
I viewed omega1 as a whitish-blue compared to a yellowish-orange omega2. 
To my surprise, as I checked the spectra afterwards each one was near 
the theoretical color. 

 

 

 
 
Eddy O'Connor
Star:  2 Scorpius 
Date & Time: July 18th 2000, 6.45 -7.30 p.m local; UT +10
Seeing: 7 dropping to 3 <1-10 Seeing Scale (10 best)> 
Transparency: 9/10
Temperature: 7oC. Dew
Location of Site: Terara, New South Wales, Australia, Long.150.38 degrees; 
South 34.52. 
Site Classification: Suburban 
Sky darkness:  <Limiting magnitude> 
Instrument: 8" F9 Dobsonian
Magnification: 72x, 144x
 
This star was easy to locate in a small group of mag. 
Five stars near Pi Scorpio. With X72 an elongation was observed but 
the half inch eyepiece at X144 offered a clean separation. The
Primary appeared light Blue and the comes showed a hint of Pink.
 
 
 
William L. Schart
Star: 2 Scorpius 
Date & Time: 7/21/00 11:39 pm CDT 
Seeing: 7 <1-10 Seeing Scale (10 best)> 
Location of site: Killeen, TX (Lat 31 N, Elev 600 ft) 
Site classification: Suburban 
Sky darkness: 4 <Limiting magnitude> 
Telescope: Orion 6" Dob. 
Magnification: 32x, 48x, 72x, 98x, 120x, 144x, 240x 
 
Nice orangish pair, but rather tight - not split at lower powers. At 72x I started to suspect some elongation, at 120x the secondary popped in and out of viewas seeing varied. Higher powers were tried, but not of any use tonight. Not able to make any measurements, but the PA was pretty much in the directgion of drift, confirming the ID. 
 
 
 
 
Richard Harshaw
Star: 2 Scorpius 
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): July 22, 2000; 0230 hours 
Site classification: suburban 
Sky conditions
seeing--  8 out of 10 
transparency--  8 out of 10 
limiting visual magnitude--  4.5 mag 
Telescope: Celestron C-8 
Eyepiece: 7.4mm, 280x 
 
 
Colors noted: yW and pB. 
A split was suspected at 104x. This star is a member of the Sco OB2 Association. 

Position: 1554-2520 
Magnitudes: 4.7, 7.4 
Sep/PA's: 3" / 274 
Year of measurement: 1962 
Distance (light years): 434 
Luminosity (in suns): 214