----- Original Message -----
From: "Randy Adams" <radams@...>
To: <guide-user@yahoogroups.com>
Sent: Monday, April 22, 2002 5:29 PM
Subject: [guide-user] Xi Puppis diffraction spikes


> Hi Everyone,
>
> This was reported in the Double Star newsgroup.
>
> "... take a look at XI Puppis (HD 63700).
> The diffraction spikes of XI Puppis have been dutifully digitized and
> converted to strings of mag 15 stars. Looks like the grand daddy of
> multiple systems."
>
> Looks great in Guide 8! (common star name: Azmidiske)

You'll find this "artifact" around many bright stars; it's a very well-known
"feature" of the Hubble Guide Star Catalog!

Regards,

Chris
---------------------------------------------------------------
Chris Marriott, SkyMap Software, UK
e-mail: chris@... Web site: http://www.skymap.com
Astronomy software written by astronomers, for astronomers