NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Lunar Distances with Alex's SNO-T
From: Bill B
Date: 2006 Nov 01, 22:47 -0400
From: Bill B
Date: 2006 Nov 01, 22:47 -0400
I wrote: > In that post he states, "Poor telescope optics might present a problem." I > remain convinced, at least with my scope and any I have tested, as well as > the observations of others on the list, that changing the focus can affect > side error and IE. So if we focus the scope for the smallest dot, we can > only check IE at that focus point. Yes? So it might not remain the same > once we refocus for our eyes? My practical (photographic) knowledge of optics is workable, but my theoretical knowledge is pretty lame. Would it be possible to focus the scope to the users eye, and then adjust the distance of the laser source from the rear element to obtain focus on the distant target? Hopefully the only dumb question is one not asked.Bill --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---