Thomas,

Yes, using UCAC-4 V I get C/2020 S3 at 5.1 and C/2020 X3 at 6.1 using
the green pixels of my camera.

I have some astrometry too but I can't work out how the MPC "Roving
Observer" code works with ADES files. Does anyone know?

The astrometry is unlikely to be very accurate due to the very short
focal length (100mm) and consequently large (17 arcsec) pixels.

Nick.

On 18/12/2020 22:09, Thomas Lehmann - t.lehmann at mailbox.org (via
baa-comet list) wrote:
> What a great experiment, very well done, Nick! Hope you enjoyed the
> eclipse besides hunting for those comets and summer in Argentina.
> Will you try to get some photometry out of your images?
>
> Cheers,
> Thomas