NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sextant Scope Parallelism (was Re : SNO-T Sextant)
From: Robert Gainer
Date: 2004 Aug 16, 17:31 +0000
From: Robert Gainer
Date: 2004 Aug 16, 17:31 +0000
Ken, Thanks for the note. The post is at a right angle to the frame. When I shimmed it I put the shim between the post and the frame at the surface of the frame. The scope now is tilted away from the frame. I also tried shimming the edge of the post so that the scope would be closer to the index or shimming the other side of the post so that the scope will be further away from the index. So I have tried all cases of adjustment. In all cases the image stayed the same in the mirror and moved in the field of view in the scope. I am going to try this again when it stops raining and I can see something that gives me a larger angle to measure. The effect is sure to be more pronounced as the angle get larger. At this point I am just confused by the difference in what I see and what it was suggested that I would see. All the best, Robert Gainer > >Robert, > >Unless I missed a message, it looks to me like no one replied to your >posting. As I read it, it seems your shimming (bottom or top of post) only >serves to tilt the scope upwards or downwards - not left or right so as to >be unparallel to the frame, which is what this is all about. >Ken Gebhart _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
