October 12, 2006: To help provide a consistent style for my double star sketches, the above sketch is a digital update to the original sketch.
My first impression was of a wide double with a blue southern component that was much brighter than its southern counterpart. I had to use averted vision to see the northern star–high clouds were getting very problematic. After further research later, it turns out I missed a third bright component that is separated by 2.4″ from the brightest star. So I should really be seeing a triple star. I want to look at this again to see if I can pick out this closer star.
|Subject||Zeta Orionis (Alnitak / 50 ORI / STF 774)|
|Position||Orion [RA: 05:40:45.5 / Dec: -01:56:33]*|
|Magnitudes*||1.9 / 4.0 / 9.9|
|Position Angle*||162Â° / 10Â°|
|Date/Time||01/16/05 – 10:05 PM|
|Observing Loc.||Flagstaff, AZ – Home|
|Instrument||Orion SVP 6LT Reflector (150 mm dia./1200 mm F/L)|
|Eyepieces/Mag.||10 mm + 2X Barlow (240X)|
|Conditions||Patchy high clouds, cool (34Â°F), 1st quarter Moon|
|Transparency||Mag 4.0 NELM|
*Based on published data.