[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: [ATM] Five restricted eyepieces

To: "Richard F.L.R. Snashall" <rflrs@rcn.com>, ATM List <atm@atmlist.net>
Subject: Re: [ATM] Five restricted eyepieces
From: Michael Lindner <mikell@optonline.net>
Date: Mon, 09 Aug 2004 01:25:22 -0400
In-reply-to: <41165EDB.8050805@rcn.com>
List-Archive: <http://home.simoivanov.com/pipermail/atm>
List-Help: <mailto:atm-request@atmlist.net?subject=help>
List-Id: The Amateur Telescope Makers List <atm.atmlist.net>
List-Post: <mailto:atm@atmlist.net>
List-Subscribe: <http://www.atmlist.net/mailman/listinfo.cgi/atm>,<mailto:atm-request@atmlist.net?subject=subscribe>
List-Unsubscribe: <http://www.atmlist.net/mailman/listinfo.cgi/atm>,<mailto:atm-request@atmlist.net?subject=unsubscribe>
References: <4113CA78.5090408@rcn.com> <41165EDB.8050805@rcn.com>
Sender: atm-bounces@atmlist.net
User-Agent: KMail/1.5.3

On Sunday 08 August 2004 01:11 pm, Richard F.L.R. Snashall wrote:
> At first, I thought the negative achromat would act as a Barlow, but
> actually this combination has an EFL of 6.154 mm, quite a bit shorter
> than the original 13.6 mm.

It is acting as a barlow, if it decreases the EFL...

-- 
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/

Follow-Ups:
- Re: [ATM] Five restricted eyepieces
  - From: Ken Hunter <atm_ken_hunter@yahoo.com>

References:
- [ATM] Five restricted eyepieces
  - From: "Richard F.L.R. Snashall" <rflrs@rcn.com>
- Re: [ATM] Five restricted eyepieces
  - From: "Richard F.L.R. Snashall" <rflrs@rcn.com>

Prev by Author: Re: [ATM] Looking for links
Next by Author: Re: [ATM] Five restricted eyepieces
Prev by thread: Re: [ATM] Five restricted eyepieces
Next by thread: Re: [ATM] Five restricted eyepieces
Index(es):
- Author
- Thread