Next message: George Huxtable: "Re: Plastic sextants and prejudice. was: GPS shortcomings."
Then the SNO-M does not have the collimation error adjustment ?
Thank you,
C.Thomas
On Fri, 2005-06-10 at 02:05, Alexandre Eremenko wrote:
> Yes, of course.
> This picture could be used in a beginner's
> textbook to explain what is "collimation error":-)
> Modern sextant scopes (for the reasons that excape me)
> do not have collimation error adjustment,
> with one exception: the inverting scope of SNO-T.
> Once Bill suggested to adjust collimation error
> with a hammer...
>
> This is apparently what the owner of this sextant did,
> and after he failed, he sells the sextant:-)
>
> Alex.
>
> On Thu, 9 Jun 2005, Robert Eno wrote:
>
> > Have a look at this sextant on e-bay.
> >
> > Are my eyes deceiving me or is the rising piece on the scope bent out of shape?
> >
> > http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&category=37971&item=7328115519&rd=1
> >