Quote:
Originally Posted by cmknight
Chif, where did you get your dob from? Is it a home-made one, or a manufactured scope? If it's home-made, the maker may not have done his math right, and placed the focuser a bit to close to the primary, or the primary is in the wrong type of cell. If it's manufactured, it may be too high up in the cell (collimation screws pushed in all the way, pushing the mirror forward). The main collimation cell, where the mirror is, actually "floats" in the mirror cell (the part attached to the tube walls). Collimation screws are typically about 3/4" long, so your mirror may actually be too far forward.
Of course, without actually seeing your scope, this is all just guesswork on my part. Can you post a pic of your scope?
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Hey, it's a manufactured one (Saxon). It may have been my fault fiddling around with it when I set up. I'll post some pics now
*Edit*
Here are some pics. Could it be the silver piece of the focuser is not in far enough or is too far out? When I loosen its screw and move it, it moves the focusing wheel, although when I move the focusing wheel, it doesn't seem to slide this? Is that normal?
http://imageshack.us/a/img19/4136/scope1.jpg
http://imageshack.us/a/img836/8155/scope2d.jpg
http://imageshack.us/a/img822/1075/scope3.jpg
http://imageshack.us/a/img402/1215/scope4a.jpg