Re: ATM Re: Eyepiece selection

["B. Pepin" <atmjedit@conceptsnet.com>]

Sky Publishing has carried a pupil gauge with various apertures and
instructions for years, sold for cheep... at last knowledge they were
desperate to get rid of them .. no takers! =)


----- Original Message -----
From: <mausoptik@t-online.de>
To: <colinharris4@compuserve.com>
Cc: <atm@shore.net>
Sent: Saturday, October 14, 2000 12:18 PM
Subject: Re: ATM Re: Eyepiece selection


>
> Colin Harris wrote:
> >
> > I am interested in measuring my exit pupil and asked my Optician if he
could
> > do it. He said  'Can't be done'. Would love to hear about Doug's pupil
gauge
> > is and how he uses it - particularly under the required full dark
adapted
> > conditions!
> >
> > Colin Harris
> > Chester, England
> >
> >
>
> Hi Colin!
>
> How about this: Take a camera with a flashlight and a second person to
push on
> the trigger. Hold a yard-stick under your eyes. Shut off the light and let
your
> eyes dark-adapt. Let the other guy take a photo of you fully opened pupils
and
> the yard stick. You could read the maximum exit pupil from that photo.
>
> Cheers,
>
> Holger
>
>