July 30, 2005
Otto Struve 525
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.
Observation Notes:
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 350° 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 [ALDS 83] |
| Classification | Multiple Star |
| Position | Lyra [RA: 18:54:54 / Dec: +33:58]* |
| Separation* | 45" |
| Magnitudes* | 6.0, 7.7 |
| Position Angle* | 350° |
| 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 |
| Seeing | 2-3/10 |
| Transparency | NELM Mag 5.2 |
Posted by Jeremy at July 30, 2005 12:50 AM .
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