Cosmic Impressions by Glenn Schaeffer

The Swan Nebula (M17)

M17-Swan Nebula


The Swan Nebula M17, also called the Omega Nebula, the Horseshoe Nebula, or (especially in the southern hemisphere) the Lobster Nebula, is a region of star formation and shines by excited emission caused by the higher energy radiation of young stars.   This is one of my favorite objects to view in the late summer southern sky with my 20" Obsession along with an OIII filter inserted in my filter slide (made by Kurt Maurer).  This image has been cropped slightly for framing.

Photographic Details:

Date & Location: September 20th  2006, Santa Fe, Texas.
Scope: Obsession 20” f/5 on a Tom Osypowski Dual Axis Equatorial Platform, Orion 100mm f/6 Guidescope.
Autoguider: SC1 Mod Celestron Neximage Cam,
Shoestring GPINT-PT guide port interface adapter, and Guidemaster software
Camera: Canon 20D DSLR (non-modded), homemade serial control shutter release cable and DSLR shutter from Stark Labs.
Filters: IDAS LPR Filter
Conditions: Temp 73F, Humidity 68%, Winds Calm, Transparency 6/10, Seeing 7/10.
Exposures: 32 x 60sec @ 1600 ISO Sub Frames, 15 x 60sec Darks.
Post-processing: 3504x2336 Raw files converted to Lossless 16-bit FITS, calibrated, aligned, and combined with ImagePlus software. Slight wavelet filtering with Registax 3.Final processing PhotoImpact Pro.


Images Copyright 1999-2010 by Glenn Schaeffer