To my knowledge, the UCAC-2 catalog is still incomplete for high northern declinations; it goes as
high as about 55 deg (i.e., in Perseus) in limited areas of the northern sky. However, I highly
recommend that it be used when possible in lieu of the USNO A2 catalog. I use Guide8 toggled
between the two and only use A2 when absolutely necessary for circumpolar objects.

Dr. Clay
Arkansas Sky Observatories
http://www.arksky.org/
Observatory Hill Drive, Petit Jean Mt.
MPC/cbat Obs. H41 / Petit Jean Mountain
MPC/cbat Obs. H45 / Petit Jean Mountain South
MPC/cbat Obs. H43 / Conway
MPC/cbat Obs. H44 / Cascade Mountain

----- Original Message -----
From: "Lawrence Harris" <lawrence@...>
To: <guide-user@yahoogroups.com>
Sent: Monday, December 17, 2007 3:25 AM
Subject: [guide-user] UCAC2 missing sections


> Hello all
>
> I'm not sure which forum is best for this query, so excuse me if I'm OT.
>
> I normally use USNO-A2 for plate solving, but I am aware that in many case -
> where the dec is not too high - the UCAC2 data is better (more accurate
> apparently). I saw a post somewhere that implied that UCAC2 has been completed,
> or that at least supplementary data can be downloaded from somewhere to fill in
> the gaps. Can anyone here clarify this please? I checked the UCAC2 site but it
> does not seem to be updated.
>
> Lawrence Harris
>
>
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