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Re: positions and other pipeline matters
The 'Stellar Catalogs' information in the TASS Technical area at
http://www.tass-survey.org/tass/catalogs/catalogs.html doesn't give a
reference to the UCAC catalog. I understand the UCAC 2 is 'under
construction' but UCAC 1 is available up to approximately DEC +30. Does
anyone know if it is available on line, or should I follow the instructions
to e-mail email@example.com to request the catalog on cdrom?
----- Original Message -----
From: "John D Phillips" <firstname.lastname@example.org>
Sent: Friday, June 28, 2002 5:50 PM
Subject: Re: positions and other pipeline matters
> I think that the scripts I wrote to match objects to the Tycho 2 catalog
> would be very easily adapted to matching with the UCAC catalog. (If I had
> copy). I volunteer to do what Tom has suggested below. "Produce a
> collected.big file with UCAC positions".
> John Phillips
> ----- Original Message -----
> From: "Tom Droege" <email@example.com>
> To: "Stupendous Man" <firstname.lastname@example.org>; <email@example.com>
> Sent: Friday, June 28, 2002 10:31 AM
> Subject: Re: positions and other pipeline matters
> > As L'il Abner might say "Given a collected.big file and a UCAC catalog,
> > fool could write a program that matched them up and produced UCAC
> > collected.big file, I could write it."
> > Seems to me that there is nothing to stop this from being done right
> > now. I think Arne will provide a catalog to someone that wants to do
> > it. Why not do this as a post processing step to Michael's pipeline?
> > someone want to take this on?
> > I read Michael below as saying the pipeline is not going to change
> > much. He might change the format - but I think this is not a very big
> > problem. One just adds columns of stuff.
> > The data base, as I see it, is a separate problem. Given a big list of
> > measurements that are of high quality and which contain interesting
> > someone will solve the data base problem. It is not such a large
> > by today's standards that it will not be able to live in some standard
> > It is my mind to get on with it. Keep taking measurements and reducing
> > them with the present pipeline. We are now talking about small
> > improvements. A few percent here, a few percent there. Desirable, but
> > essential to the project.
> > I plan to do just that. Work on collecting data and processing it
> > the pipeline. Get an engineering paper out late this year after I have
> > completed +7 N and then go on to other areas. Get a big scan going so
> > I get each area of the sky every few days. Get some areas with short
> > period variable scans.
> > Tom Droege
> > At 09:40 AM 6/28/02 -0400, you wrote:
> > > Arne suggests that we match up detected stars to UCAC stars, then
> > >use the UCAC positions for all subsequent analysis.
> > >
> > > > Again, UCAC is the way to go here; keep its coordinates and don't
> > > > try to improve on them.
> > >
> > > Tom agrees:
> > >
> > > > Yep, I am patiently waiting for someone to fix up Michael's pipeline
> > > use
> > > > UCAC. Then I will process all the data again and collect_stars will
> > > not be
> > > > needed.