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Michael A. Stecker
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| NGC 457 |
 Open Star Cluster NGC 457 NGC 457 is an open star cluster in the constellation Cassiopeia. It is 15 light years in diameter, 7,922 light years from earth with an estimated age of 21-million years. This is a joint project of James Foster and Michael Stecker using a 10-inch f/4 Newtonian telescope with a ZWO ASI2600MC-Pro color camera and 58-minute exposure. file: NGC457_58minEXP-cr2.jpg Click here for full resolution photo Photographic Data Date: September, 2025 telescope: Sky-Watcher Quattro 250P (10-inch f/4 Newtonian telescope with coma corrector) FL= 1,000 mm mount: iOptron Cem60 guiding off-axis imaging cameras: ZWO ASI2600MC-Pro color astrocamera filter: none exposure: 29 X 120 sec total exposure time: 58 minutes .photographic site: James Foster observatory at Pinon Pines Estates (Frazier Park) California (Bortle 4 at 5,500 ft elevstion) |