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From: space@ucbvax.UUCP
Newsgroups: net.space
Subject: Re: Photographing Halley's
Message-ID: <8601300203.AA03084@prandt>
Date: Wed, 29-Jan-86 21:03:44 EST
Article-I.D.: prandt.8601300203.AA03084
Posted: Wed Jan 29 21:03:44 1986
Date-Received: Sat, 1-Feb-86 02:55:51 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
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A few weeks ago, I put out a request for info on how to go about taking
a photo of Halley's comet with my kids in the same frame. I've received
enough good information to write a small book. I plan to post a summary
next week. Thanks to all who replied.

To make the summary complete, I would appreciate anyone who can point me to a
reference on how to construct a "Poncet mounting" for tracking stars. I have
seen the writeup in the November Sky & Telescope, but would appreciate more
details. If anyone also knows a reference that describes the "barn door"
tracking mount, I would appreciate it.

Please reply by mail.

Chuck Collins      ...{ihnp4,hplabs}!ames!amelia!cpc              cpc@ames-nas