Sigma Cassiopeiae (Struve 3049)

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.

Observation Notes:

This is the closest AL Double I’ve observed so far. Both stars were white. The secondary appeared to sit at 330° 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 326° and 3″.

Subject Sigma Cassiopeiae (Struve 3049)
Classification Triple Star
Position Cassiopeia [RA: 23:59:00 / Dec: +55:45]*
Separation* 3″
Magnitudes* 5.0, 7.1
Position Angle* 326°
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, 55°F
Seeing 6/10
Transparency NELM Mag 5.8

*Based on published data.