13 Oct
2002
13 Oct
'02
20:26
When you parafocalize EPs, you end up making the longer FL EPs stick further up the focuser than the short ones. Thus you will bring the focuser to the closer position where the cone is larger in diameter and less of an angle is obtained. <snip>
This I found out when looking at the double cluster so I took away the plastic sheaths I used to make the EP's parfocal. Has anyone had experiences with the sled focuser and imaging either ccd or film/slid ? Clive. Fighting for darker skies.
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Clive Rogers