www.my-spot.com > Astronomy by Frank > Deep Space > M57

Object: M57

Date: August 4, 2001

Exposure(s): 18 Min, 18 Min

Film: Kodak LE400

Equipement: 10" f/10 Meade OTA w/GEG @ f/6.3 on Losmandy G-11

Guiding: SBIG ST-4

Hardware & Software: HP S20xi film scanner, Hamrick Software's VueScan, The raw image scans were processed, cropped, and then digitally stacked using Picture Window.

Image Info: My image of M57 really suprised me do to the fact that I took it under my light polluted skies and during a full moon! This image was one of the first times I really saw a grain reduction in an image by stacking. The stars do not show any tracking problems, further confirming that I have made useful improvements to my G-11. The 14.7 mag central star in very clear. This is a BIG improvement over my first M57 image.

Object Info: M57, the Ring Nebula. The distance to M57 is not really well known but most estimates are in the 2000 to 3000 ly range with a few beening farther out then that.

This (above) is a more processed version of my M57 exposure. The intent here was to more closely match the Hubble Space Telescope's brightness of the image (below)
Here I superimposed the Hubble Space Telescope's image of M57 over my version of my M57 above as a kind of resolution comparison. Of course, this really isn't fair to the Hubble image because of the huge amount of reduction applied to make the image this small. To see what I mean click here.

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Updated: 09/16/02 12:16:40 PM