October 18, 2006: To help provide a consistent style for my double star sketches, the above sketch is a digital update to the original sketch.
Even in poor seeing, the trapezium is spectacular. The A-D stars were simple to spot, with the C star being the brightest. I stared long enough that occasional moments of better seeing gave me a peek at the E star; but the F star wasn’t there at all.
|Subject||Double/Multiple Star: Theta 1 Orion / 41-Ori [ALDS23]|
|Position||Orion [RA: 05:35.3 / Dec: -05:23]*|
|Magnitudes*||6.7, 7.9, 5.1, 6.7|
|Position Angle*||31ï¿½, 132ï¿½, 96ï¿½|
|Date/Time||01/17/05 – 10:25 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||Clear, cool (39ï¿½F), 1st quarter Moon|
*Based on published data.