[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: [ATM] Five restricted eyepieces
On Monday 09 August 2004 12:59 pm, Ken Hunter wrote:
> --- Michael Lindner <mikell@optonline.net> wrote:
> > It is acting as a barlow, if it decreases the EFL...
>
> Doesn't a Barlow normally INCREASE the EFL?
If you consider it part of the scope, you can think of it as increasing the
EFL of the telescope. If you consider it part of the eyepiece, you can think
of it as decreasing the EFL of the eyepiece.
--
Michael Lindner
http://www.starastronomy.org *** http://home.att.net/~mikel
http://www.atmsite.org *** http://www.atmlist.net
_______________________________________________
ATM mailing list http://www.atmlist.net/