[BAA Comets] Astrometrica now downloads from MPC server

[Nick James]

Hi Peter,

Thanks for drawing attention to this and to Herbert for continuing to 
suupport this essential program.

Just one note. In Herbert's version history for the latest version 
(4.10.5.437) he says: "Improved colour correction for UCAC 4 and URAT 
1". I'll try to find out exactly what this means since in the last 
change (to 4.10.0.431) there was a significant shift in UCAC-4 R magnitudes.

I've checked UCAC-4 R magnitudes reducing a couple of frames for 
4.10.0.431 and 4.10.5.437 and they seem to be the substantially the same 
although the number of reference stars used changed from one version to 
the other.

Nick.

On 02/04/2018 20:31, Peter Carson wrote:
> Hi All,
> For those not aware Herbert Raab of Astrometrica has just released an update to Astrometrica that now downloads the MPCOrb data directly from the MPC https server. See www.astrometrica.at/download.html For several months Astrometrica was unable to download directly from this secure server which did make it a bit of a pain to keep the orbital elements data base up to date. See an extract from Herbert’s notes below note:
> All the best
> Peter Carson