[BAA Comets] ICQ codes

[Tony Angel]

I held back on this hoping that someone else will raise it :) What about 
CMC-15?

On a similar theme.  I have not submitted any magnitude observations for a 
reason. When I asked a few professionals about my observations, the first 
thing I was asked was whether they were calibrated. At first I 
misunderstood, thinking they were referring to flats, darks and bias :) then 
I realised that they were asking if I had calibrated my photometrical 
filters. The answer to that for me was no, because I do not have any 
photometric filters. I have spent the last few months reading up on 
calibrating filters and what types are used by a number of professional 
observatories. Correct me if I am wrong but it seems that for the 
observations to be of any use to professionals I need to save up for a set 
of Sloan Filters - which will take a year or two. I mention Sloan because 
the professionals seem to be moving away from UBVRI sets.

Comments appreciated.

Tony.
--------------------------------------------------
From: "Shanklin, Jonathan D." <jdsh at bas.ac.uk>
Sent: Sunday, February 01, 2015 10:42 PM
To: "BAA Comets discussion list" <comets-disc at britastro.org>
Subject: [BAA Comets] ICQ codes

> Denis Buczynski has drawn my attention to the fact that some CCD 
> photometry software uses the Carlsberg Meridian Catalogue 14 (CMC14), 
> which was released at the end of 2005.  This is a more recent release than 
> the CMC 4 version of the catalogue (1989) which has ICQ code MC.  A new 
> code should therefore be used and I suggest MD.  I've updated the 
> additional codes list at http://www.ast.cam.ac.uk/~jds/baaicqkeys.htm
>
> Regards,
>
> Jonathan Shanklin
>
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