2016 June

NGC6888 – Crescent Nebula

The Crescent Nebula, NGC 6888, in a wide-field setting with lots of surrounding nebulosity. This is a pure narrow-band composite based on (18,16,15) frames for Ha, OIII, and SII with 1800sec each, taken at the Deep Sky West Observatory. The different versions below represent different color mappings, otherwise the processing is pretty basic. Exposure: HOS, […]

Whirlpool Galaxy – M51

The Whirlpool Galaxy, M51, in a wide-field setting. This is an LRGB composite with a little bit of Ha admixture from a total of 22 hours of exposures taken at the Deep Sky West Observatory. Exposure: L 32 x 900sec, RGB (16,16,16) x 600sec, Ha 16 x 1800sec Date: 2016-04-10…2016-05-04 Setup: Takahashi FSQ106 EDXIII with […]