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.
This is the closest AL Double I’ve observed so far. Both stars were white. The secondary appeared to sit at 330Â° PA, and a distance of about 2.5 diffraction rings from the primary…so maybe that’s about 2.5″? Listed values from the AL double star list are 326Â° and 3″.
|Subject||Sigma Cassiopeiae (Struve 3049)|
|Position||Cassiopeia [RA: 23:59:00 / Dec: +55:45]*|
|Date/Time||08/13/05 – 11:45 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||Partly cloudy, calm, 55Â°F|
|Transparency||NELM Mag 5.8|
*Based on published data.