Re: sextant telescopes
Subject: Re: sextant telescopes
From: Ken Gebhart (gebhart@XXX.XXX)
Date: Fri Oct 04 2002 - 18:13:13 EDT
Although certainly not scientific, someone once told me that the power of
a scope is best suited to a boat 10 times that power in feet. ,ie. 3.5X
for a 35 footer, 7X for a 70 foot boat, etc.
Ken Gebhart
Dan Allen wrote:
> On Friday, October 4, 2002, at 10:15 AM, Hal Mueller wrote:
>
> > My Astra IIIB came with a 3.5x40 telescope. what are
> > people actually using?
> >
> > It appears that the 6x30 would potentially give better accuracy for
> > lunar distance sights. But I've never tried to reduce a lunar
> > distance, let alone shoot one.
>
> If you are on land, or perhaps at anchor in calm waters, 6 or 7 power
> scopes can definitely improve your measurements. My backyard studies
> show that I am more accurate with my Tamaya Jupiter and its 7 power
> scope than I am with some of my other sextants that have 3.5 or 4 power
> scopes.
>
> Move to the average 35-45' vessel on a typical day, and these higher
> power scopes are quite hard to use. 4 power is about right for such
> applications in my experience.
>
> Dan Allen
