October 17, 2006: To help provide a consistent style for my double star sketches, the above sketch is a digital update to the original sketch.
This pair exhibited beautiful color at low power. The brighter southern star was yellow-orange, while the norther was blue. It was a nice contrast. I guessed a separation of 75″–it’s actually 45″. Man I need to work on that. The position angle in the sketch of approximately 350Â° matches the AL list measurement on the dot. The faintest star I plotted in the sketch was mag 12.7 GSC 0264701827.
|Subject||Double/Multiple Star: Otto Struve 525|
|Position||Lyra [RA: 18:54:54 / Dec: +33:58]*|
|Date/Time||07/30/05 – 12:50 AM|
|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, breezy|
|Transparency||NELM Mag 5.2|
*Based on published data.