M 57 Ring Nebula
M57_m.jpg (177702 Byte)

 

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SBIG ST10 E
L=10x2m 1xBin, R,G,B=5x1m 2xBin, 20.06.2002
Max Valier 80cm Cassegrain f/10 (equatorial mounted)
4800mm  f/6
SBIG Filter Set provided with the CFW8
4-lens Reducer custom made
average of 1.3 arc seconds
MaximDL LRGB composit, PS 5.5, CCDSharp
low transparency, near full moon, but TOP SEEING.
Philipp Keller, Georg Lercher and Dieter Seiwald

We delivered this telescope in June 2002 and this was the first light image. It also was first light for our new ST10 XME.
The seeing this night was the best I ever experienced. The next night it was about the same, so this location (near Bozen, Italy) seems to be a very good place.

The image was not off-set guided. The accuracy of the mount is better than 0.2 arc seconds RMS in 5 minutes.

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