Re: ATM Turn Down Edge?

["Tom & Lou Krajci" <krajcit@3lefties.com>]

From: starlord@qnet.com (Slc.Dennis Bishop)

>  After doing a major and very slow realinement yesterday and telling
>what the image was like afterwards. I've been told to make a mask for
>the front of the tube that would cut down the opening to 6inch and
>test it then. That if this clears up the ghost image, the mirror has a
>turn downed edge. If so, would I need to put tape or something on the
>edge of the  mirror to fix this.

>I checked it tonight and with everything in dead center alinement, I
>still get that ghost on venus, but the stars look to be ok. Without
>the mount I've not been able to get mars just yet.

Check out this URL:
http://users.digitalexp.com/~users/suiterhr/kestner.jpg

(It's part of this page:
http://users.digitalexp.com/~users/suiterhr/TOPTEN.HTM#10   )

Use the highest magnification eyepiece you can get your hands on.

Which diagram/aberration/problem most closely matches your scope's in/out of
focus star images?

Tom Krajci