---- Original Message ----
> From: rotorzilla_jp <[EMAIL PROTECTED]>
>
> I have been using Cartes du Ciel for about a year now. Its great!!
>
> Where can you download the USNO 2A catalog to use with it?
You used to be able to get it from USNO, but I don't know if it's available
anymore, since it's been superseded by USNO-B1.0. A2.0 was distributed on a
set of CDs. For B1 you have to send them a harddrive (it's 80GB!). This was
done at the taxpayer's expense, so it was really only meant for people with a
serious use for it. But of course you can use the "online resources" to get
individual star fields of A2 from ESO SkyCat (presumably at European taxpayers
expense, but downloads are much cheaper than CDs).
For negative declinations, you can get A2 or B1 from the Vizier online source,
but as has been mentioned several times recently, it no longer works in CdC
v2.76 at positive dec, due to a change at Vizier.
-John
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