Nikon D5 DSLR, 70-(200)mm FL lens, f/4, 5x30s, ISO1600, Avalon Linear mount.
DESCRIPTION: http://en.wikipedia.org/wiki/Messier_39 TECHNICAL NOTES: This is a single 142 seconds exposure with an unmodified Nikon d3100 DSLR camera at ISO400. It has been taken under light pollution WITHOUT any LPS filter. Note the wonderful star colors in the field. EQUIPMENT: Telescope: 385mm (f/3.65) Guider: SBIG ST7XME on a 355mm (f/6) scope. Mount: JPZ Software: Aperture v3.1.2 (Mac). Only histogram adaptions has been one in the NEF (raw) file.
