November 9, 2013

Melotte 15 and IC 1805's Heart, Early Fall 2013


Here is a slightly modified Hubble palette version of the cluster Melotte 15 and the heart of IC 1805.  To the bi-color I've added Sulfur II emission.  Now SII = Red, Ha+NII = Green, and OIII = Blue, though the colors have been shifted somewhat to emphasize the contrasts between them.

Telescope: Astro-Tech AT111EDT and William Optics AFR-IV (eff. at f/5.6)
Camera and Exposure: SXVF-H9 (Ha+NII:23x1200"; OIII:17x1200"; SII:18x1200"), Alnitak Flat-man flats
Filter: Astronomik Ha+NII, OIII, SII
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Registar, Photoshop CS3
Location: The Woodlands, TX

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