Date: Fri, 29 Dec 2000 22:08:42 -0600 (CST)
From: Stephen Kent
Subject: Re: Plate scale changes in 2.5m obslog 20001223 (MJD 51902)
Each batch of plates is designed for a specific temperature around the
time that the plates will be used, so there will be scale changes between
plates designed in different batches.
Steve