Tuesday, July 3, 2012

The Omega Nebula (M17) in the Constellation Sagittarius

Latent0Image has added a photo to the pool:

The Omega Nebula (M17) in the Constellation Sagittarius

Also known as the Swan Nebula, this object was photographed on the morning of June 21, 2012 from a moderately dark-sky location using an Astro-Tech AT72ED telescope (2.8"/72mm aperture, 430mm prime focal length, f/6) and a Sony NEX-5N digital camera (ISO 3200, a stack of eighty-eight images each exposed for 30 seconds, producing a total exposure integration time of 44 minutes). Tracking for each of the 30 second exposures was performed by a Celestron CGEM mount (no manual or auto guiding, standard sidereal rate after one star polar align).

Image registration, integration, and adjustments done with PixInsight v01.07.06.0793 with final tweaks in Photoshop CS5.

This image is best viewed against a dark background (press the "L" key to enter the Flickr light box).

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