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

Re: [ATM] Hill or hole?

To: David Bevel <dhcb@bellsouth.net>
Subject: Re: [ATM] Hill or hole?
From: Michael Lindner <mikell@optonline.net>
Date: Wed, 30 Jan 2008 10:39:20 -0500
Cc: atm@atmlist.net
Delivered-to: atm_arc@astro.umsystem.edu
In-reply-to: <007701c862fc$c1dfcf10$6402a8c0@l7vmm3>
List-archive: <http://www.atmlist.net/pipermail/atm>
List-help: <mailto:atm-request@atmlist.net?subject=help>
List-id: The Amateur Telescope Makers List <atm.atmlist.net>
List-post: <mailto:atm@atmlist.net>
List-subscribe: <http://www.atmlist.net/mailman/listinfo.cgi/atm>, <mailto:atm-request@atmlist.net?subject=subscribe>
List-unsubscribe: <http://www.atmlist.net/mailman/listinfo.cgi/atm>, <mailto:atm-request@atmlist.net?subject=unsubscribe>
References: <007701c862fc$c1dfcf10$6402a8c0@l7vmm3>
Sender: atm-bounces@atmlist.net
User-agent: Thunderbird 2.0.0.0 (X11/20070326)

David Bevel wrote:
> I have a mirror that has a problem. I have either a hill or a hole but not 
> sure which.

Move the stand to null out the area outside the hill or hole. Note the 
reading. Now move it to null out the hill/hole. Look at the reading. If 
you moved towards the mirror it's a hole, away, it's a hill.

-- 
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/

References:
- [ATM] Hill or hole?
  - From: "David Bevel" <dhcb@bellsouth.net>

Prev by Author: Re: [ATM] Curious
Next by Author: Re: [ATM] Curious
Previous by thread: Re: [ATM] Hill or hole?
Next by thread: Re: [ATM] Hill or hole?
Index(es):
- Author
- Thread