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

Re: ATM Field Diameter

To: "atmlist" <atm@shore.net>
Subject: Re: ATM Field Diameter
From: "Bob May" <bobmay@nethere.com>
Date: Fri, 17 Jan 2003 11:52:33 -0800
References: <3E281517.5070005@rcn.com>
Reply-To: "Bob May" <bobmay@nethere.com>
Sender: owner-atm@shore.net


Measure the diameter of the inside of the tube and use that as the final
value.  It will be slightly larger than the largest lens that will fit in a
2" EP (the holding ring is actually the better diameter and that will be
problably another .1" at best) and will be a decently good fit for the max.
you will be able to see.
FWIW, short FL scopes will also have the problem of the length of the 2"
focuser tube so don't forget that in your vignetting stuf.
Bob May
http://nav.to/bobmay
bobmay@nethere.com
NEW! http://bobmay.astronomy.net

Follow-Ups:
- Re: ATM Field Diameter
  - From: "Richard F.L.R. Snashall" <rflrs@rcn.com>

References:
- ATM Field Diameter
  - From: "Richard F.L.R. Snashall" <rflrs@rcn.com>

Prev by Author: Re: ATM Base for polishing lap
Next by Author: Re: ATM Truss dob joinery/planes
Prev by thread: ATM Field Diameter
Next by thread: Re: ATM Field Diameter
Index(es):
- Author
- Thread