M57-The Ring Nebula (digital)

m57ss-800.jpg (57413 bytes)

M57, NGC6720
Constellation: Lyra - the Lyre (the Harp)
Type: Planetary Nebula
Position: RA:18h53.6m 
Magnitude: 9
Exposure: Taken 7-4-04
20 X 120 sec. ISO 400
Processing: Raw images converted to 16bit TIFFs.  Dark subtracted and stacked (min/max excluded average) in ImagesPlus. Levels and curves adjusted in Photoshop.
Equipment: Meade 10" SCT OTA f/10
Canon Digital Rebel
Losmandy G-11 Gemini mount
ToUcam Pro webcam running Steve Barkes' GuideDog autoguiding software
Celestron Guidescope
Notes: I would like to thank Dave Dockery for his assistance in processing this image.

This is a replacement of my "first light" image taken on 7-1-04 with the Canon Digital Rebel camera.   The guiding and focus are better on this image.  You can still view my inaugural attempt here. Compare these attempts with my best film image. This shot clearly shows not only the central star, but 3 other stars within the nebula.  This image was taken without filters during a 3/4 full moon.

Locator Chart

m57chart.gif (4057 bytes)
Chart copyright Steven Tuma and Dean Williams - Deepsky 2002

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