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adam stuart | all galleries >> Galleries >> open_star_clusters > open star cluster ngc 1664.jpg
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1-8-06 adam stuart

open star cluster ngc 1664.jpg

miami, fl

Open Star Cluster NGC 1664

Starlight Xpress HX916,2.88 arc-sec/pixel
Stellarvue Nighthawk @ f/6.1 (calculated) piggybacked on STV-guided LX200 at f/6.3 (1575 mm). Astronomik Type II IR-blocked LRGB set. Luminance = 30 x 120 seconds; Red and Green = 15 x 120 seconds; Blue = 10 x 60 seconds. All unbinned 1x1. Schuler -VIR filter used in imaging train to reduce blue bloat. Acquired with Astroart 3.0, aligned in AIP4WIN, and sigma combined in Ray Gralak's pre-beta 11. Temp 58 F, 80% humidity. full exif

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