Aitken 2719 in Orion

William L. Schart
Star: Aitken 2719 in Orion
Date & Time: 
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> 
Moon: still hidden 
Telescope: Celestar 8” SCT
Magnification: 		 I barely got an elongation on this at high power. Whitish-blue is color and part of a triangular asterism which fills about 1/4 of the FOV at high power.
 

 
 
 
Steve Bodin 
Star: Aitken 2719 in Orion
Date & Time: 1 Mar 2003 9 pm to 11pm local
Seeing: 6->4  <1-10 Seeing Scale (10 best)>. 
Transparency: poor
Location of site: Silverdale WA, USA
47N 123W
Site classification: suburb-rural
Conditions: temp 40F, some dew
Sky darkness: 5.5 <Limiting magnitude> 
Telescope: Celestron C8
Eyepieces: not used
Additional: DX-8263SL video camera at 3x
Magnification: app. 1000x video
 		 Very difficult double; faint and close. Star seems blue which is an agreement with the listed B9 spectral type. Our list has a 062 deg PA, but the WDS has 241 deg PA. Maybe there is some comfusion as to which component is A or B? Or there has been conciderable motion. WDS separation also is listed as 0.4 sec vice 0.5 in our list. Looking at my TV screen in real time this star appeared elongated at an angle suggesting that either PA could be correct. Post processing was extremely difficult due to the seeing and closeness of the components. Best I could do with a measure was 0.43 sec at 210 deg PA, this does not agree well with either measure and maybe totally false due to the difficulty of this star.