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| The Pleiades. Although this star cluster is often called "The Seven Sisters," it has far more than seven stars. Most people can see six to eight of the brightest stars--a few people can see more from dark locations. The bluish nebulosity and dark dust clouds in this photo require long-exposure photographs to see clearly. See below for information on this photo. |
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| Telescope: 80mm refractor (Megrez 80 original version with TeleVue flattener/reducer, yielding f/4.8). plus violet-reduction filter to reduce spurious color. Tracking platform: LX200GPS 10-inch with ToUcam (unmodified) and K3ccdtools2 for guiding Camera: Canon Digital Rebel 300D (unmodified) Exposures: ISO400, 11 exposures of 4 minutes (3 dark frames averaged), plus ISO800, 5 exposures of 4 minutes (2 dark frames averaged). Stacking: K3ccdtools2 Processing: Photoshop and Neat Image Camera temperature: 42 degrees F Late October, 2005 |
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