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Sunday, September 25, 2011

6 Inch Dob

I picked up a 6 inch dob at a government auction real cheap - $22
It is a Meade Starfinder.  Not a super quality scope, but... the optics appear to be pretty decent.  The views in the eyepiece seem decent, there is some coma because I know I dont have the collimation down perfect yet.  I did a rough collimation, but I think the secondary is off a little.  I did photograph Jupiter however, it was variably cloudy tonight, but there were periods of decent viewing.  Here is what I got:




Not my best images, but keep in mind this is a dob, so its totally manual with no clock drive.  I imaged without a barlow, focal length is about 1200mm.  It is a 6", f/8 scope.   The red spot is rising in these images.

One more image where I captured 3 moons...

Notice the moons are nice and round, and quite bright.

I also think part of the problem is I think theres a setting in the camera thats off a bit.  Maybe I should turn up the gamma a little, as these are way too "contrasty".  I apparently did not have much saturation, there is very little color.  I do believe this scope shows some promise however.  I posted these images as a reference to compare to once I do more work on the scope.

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