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Re: [APML] Horsehead and Pleiades testshots with 6x9 camera/OAGand BRC

To: astro-photo@seds.org
Subject: Re: [APML] Horsehead and Pleiades testshots with 6x9 camera/OAGand BRC
From: Chris1011@aol.com
Date: Wed, 19 Dec 2001 18:44:17 EST
Reply-To: astro-photo@seds.org
Sender: owner-astro-photo@seds.org

In a message dated 12/19/2001 2:20:29 PM Pacific Standard Time, genehorr@texas.net writes:

Well, I measured ~9u stars with it a year + ago.

How do you measure star diameters on negatives? I tried with a measuring microscope, but could not get consistent results. CCDs are easier, of course, but the resolution of today's available pixels does not allow you to accurately measure a star diameter less than 12 microns.

Roland Christen

Follow-Ups:
- Re: [APML] Horsehead and Pleiades testshots with 6x9 camera/OAGand BRC
  - From: Gene Horr <genehorr@texas.net>
- Re: [APML] Measuring microns (was Horsehead)
  - From: "Mike Cook, AF9Y" <mwcook@concentric.net>

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