Hi Deborah Could you insert your graphics in more common format and resend the doc? Both Open Office and Windows MS Word have problems opening it in my case (MSWord claims I need QuickTime and TIFF (LZW) decompression)
Thanks Jacek > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Deborah Levine > Sent: Friday, December 01, 2006 2:43 PM > To: LSST Data Management > Subject: Re: [LSST-data] DataAccWG telecon Fri Dec 01 > > Hi all, > > Attached is my attempt at capturing what I thought I heard in > a format similar to Jacek's. The Tables in the document are > not meant to literally represent the Source and Object > tables, but to collect a subset of information about each and > to show how they are logically related. I hope this is clear > and not more confusing than things were before! I'm > definitely not as good at PC art -- I added a diagram for a > second filter but it is pretty messy. > > In terms of nomenclature... I additionally think we settled > on a few things and they are assumed in the attached > document. I THINK that: > An Astronomical Object is a Star, Galaxy, etc. In any > catalog release, the Objects represent best knowledge of what > the real Astronomical objects seen to date are. In the case > of a confused source in release A that is resolved in release > B, The previous Object disappears and is replaced by two > different Objects. > > A Source is a single filter, single difference epoch signal > extracted from a difference image, the smallest and most > elemental unit. > > "Detection" has no structural database/catalog meaning, but > refers to any extracted flux at a cutoff SNR, whether it be > in a deep image or a difference image. > > cheers, > Deborah > > -- > --------------------------------------------------------------------- > Deborah Levine, Ph.D. (626)395-8567 (Office) > Operations Scientist (626)590-7500 (Mobile) > Spitzer Space Telescope Science Center (626)432-7484 (FAX) > Mail Code 314-6, Caltech [EMAIL PROTECTED] > Pasadena, CA 91125 > > "Make everything as simple as possible, but not simpler." > Albert Einstein > > > > _______________________________________________ LSST-data mailing list [email protected] http://www.lsstmail.org/mailman/listinfo/lsst-data
