From owner-fitsbits at kochab.cv.nrao.edu Mon Sep 13 10:32:56 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id KAA14423 for fitsbits-spinner; Mon, 13 Sep 1999 10:31:31 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id KAA14418 for ; Mon, 13 Sep 1999 10:31:27 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id KAA11140 for fitsbits at majordomo.cv.nrao.edu; Mon, 13 Sep 1999 10:31:27 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id FAA13773 for ; Mon, 13 Sep 1999 05:22:48 -0400 (EDT) Received: from newsfeed.cv.nrao.edu (newsfeed.cv.nrao.edu [192.33.115.17]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id FAA10595 for ; Mon, 13 Sep 1999 05:22:47 -0400 Received: (from news at localhost) by newsfeed.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id FAA13610; Mon, 13 Sep 1999 05:22:47 -0400 To: fitsbits at fits.cv.nrao.edu Date: 13 Sep 1999 08:53:13 GMT From: "Giorgio" Message-ID: <01befdc4$aceec8a0$02bfdfc3 at mmx300> Organization: Centro Servizi Interbusiness Path: newsfeed.cv.nrao.edu!chaos.aoc.nrao.edu!lynx.unm.edu!newshub.tc.umn.edu!news.eecs.umich.edu!news.niehs.nih.gov!logbridge.uoregon.edu!newsfeed.icl.net!colt.net!Pollux.Teleglobe.net!server-b.cs.interbusiness.it!not-for-mail Subject: Using the CFITSIO.DLL library. Newsgroups: sci.astro.fits Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk Hi, I am looking for someone who can correctly use the cfitsio.dll library under Microsoft Visual Basic. Thanks! From owner-fitsbits at kochab.cv.nrao.edu Tue Sep 14 06:35:28 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id GAA20264 for fitsbits-spinner; Tue, 14 Sep 1999 06:33:51 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id GAA20259 for ; Tue, 14 Sep 1999 06:33:48 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id GAA13812 for fitsbits at majordomo.cv.nrao.edu; Tue, 14 Sep 1999 06:33:48 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id XAA16266 for ; Mon, 13 Sep 1999 23:46:06 -0400 (EDT) Received: from newsfeed.cv.nrao.edu (newsfeed.cv.nrao.edu [192.33.115.17]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id XAA13071 for ; Mon, 13 Sep 1999 23:46:05 -0400 Received: (from news at localhost) by newsfeed.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id XAA10521; Mon, 13 Sep 1999 23:46:05 -0400 To: fitsbits at fits.cv.nrao.edu Date: 13 Sep 1999 23:45:08 -0500 From: Pete Ratzlaff Message-ID: <37ddc4c4.0 at cfanews.harvard.edu> Organization: Harvard University Path: newsfeed.cv.nrao.edu!newsgate.duke.edu!nntp-out.monmouth.com!newspeer.monmouth.com!newsfeed.enteract.com!news.maxwell.syr.edu!news.cis.ohio-state.edu!news.dfci.harvard.edu!news.harvard.edu!attmt1!ip.att.net!dev01.harvard.edu!cfanews.harvard.edu!not-for-mail Subject: ANNOUNCE: CFITSIO.pm v0.92 Newsgroups: sci.astro.fits Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk Hello again, A new version of the Perl interface to William Pence's CFITSIO subroutine library is available. For more information on the CFITSIO subroutine library, see http://heasarc.gsfc.nasa.gov/fitsio New features in CFITSIO.pm v0.92 include: * Bug fixes: none. There are no known bugs, so please send those bug reports in! * Most functions which read data from FITS files were doing an extra malloc and memcpy when PerlyUnpacking(0) was used (e.g., reading into piddles). This has been fixed. * Minor updates to example programs. Since the launch of Chandra (hurray!), I've been giving the bintable routines in this module a very strong workout, and I am more than pleased with its performance. Other routines have not been tested nearly as much - in particular primary array and ASCII table routines. This Perl module uses functions found only in CFITSIO v2.031 and later, so you will need at least that version for proper installation. It has been tested with both v2.031 and v2.032 on Linux (ix86, glibc) and Solaris 2.6. This version of CFITSIO.pm can be obtained at: http://hea-www.harvard.edu/~rpete/cfitsio/CFITSIO-0.92.tar.gz And also on your local CPAN mirror under: authors/id/P/PR/PRATZLAFF/CFITSIO-0.92.tar.gz As always, you can find the latest version of CFITSIO.pm at http://hea-www.harvard.edu/~rpete/cfitsio -Pete Ratzlaff From owner-fitsbits at kochab.cv.nrao.edu Mon Sep 20 16:16:17 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id QAA00842 for fitsbits-spinner; Mon, 20 Sep 1999 16:13:19 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id QAA00837 for ; Mon, 20 Sep 1999 16:13:16 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id QAA16590 for fitsbits at majordomo.cv.nrao.edu; Mon, 20 Sep 1999 16:13:15 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id QAA00822 for ; Mon, 20 Sep 1999 16:04:22 -0400 (EDT) Received: from palantir.cv.nrao.edu (tismail at palantir.cv.nrao.edu [192.33.115.254]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id QAA16531 for ; Mon, 20 Sep 1999 16:04:22 -0400 Received: (from tismail at localhost) by palantir.cv.nrao.edu (8.8.5/8.8.5) id QAA11350 for ; Mon, 20 Sep 1999 16:03:34 -0400 Received: from wheelo.gsfc.nasa.gov(128.183.50.20) by palantir.cv.nrao.edu via smap (V1.3) id sma011338; Mon Sep 20 16:03:07 1999 Received: from tetra.gsfc.nasa.gov (tetra.gsfc.nasa.gov [128.183.16.178]) by wheelo.gsfc.nasa.gov (8.8.8/8.8.8) with ESMTP id PAA19633 for ; Mon, 20 Sep 1999 15:58:16 -0400 (EDT) Received: from tetra.gsfc.nasa.gov (localhost [127.0.0.1]) by tetra.gsfc.nasa.gov (8.8.8+Sun/8.8.8) with ESMTP id PAA11934; Mon, 20 Sep 1999 15:56:36 -0400 (EDT) Message-ID: <37E69173.41015ACD at tetra.gsfc.nasa.gov> Date: Mon, 20 Sep 1999 15:56:35 -0400 From: William Pence Organization: NASA/GSFC X-Mailer: Mozilla 4.51 [en] (X11; U; SunOS 5.6 sun4u) X-Accept-Language: en MIME-Version: 1.0 To: FITSBITS Subject: Announcement: CFITSIO v2.033 References: <36489C6E.A5EB7A2D at tetra.gsfc.nasa.gov> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk **** CFITSIO v2.033 Release Announcement **** A new version of the CFITSIO library for reading and writing FITS files is now available at http://heasarc.gsfc.nasa.gov/fitsio This release containing a number of relatively minor enhancements and bug fixes to the previous release. The revised User's Guide for CFITSIO can be viewed on-line at C programmers guide: http://legacy.gsfc.nasa.gov/docs/software/fitsio/c/c_user/cfitsio.html Fortran programmers guide: http://legacy.gsfc.nasa.gov/docs/software/fitsio/c/f_user/fitsio.html ____________________________________________________________________ Dr. William Pence pence at tetra.gsfc.nasa.gov NASA/GSFC Code 662 HEASARC +1-301-286-4599 (voice) Greenbelt MD 20771 +1-301-286-1684 (fax) From owner-fitsbits at kochab.cv.nrao.edu Tue Sep 21 11:17:12 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id LAA05921 for fitsbits-spinner; Tue, 21 Sep 1999 11:15:07 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id LAA05916 for ; Tue, 21 Sep 1999 11:15:04 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id LAA18556 for fitsbits at majordomo.cv.nrao.edu; Tue, 21 Sep 1999 11:15:03 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id LAA05907 for ; Tue, 21 Sep 1999 11:00:20 -0400 (EDT) Received: from newsfeed.cv.nrao.edu (newsfeed.cv.nrao.edu [192.33.115.17]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id LAA18464 for ; Tue, 21 Sep 1999 11:00:18 -0400 Received: (from news at localhost) by newsfeed.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id LAA03523; Tue, 21 Sep 1999 11:00:18 -0400 To: fitsbits at fits.cv.nrao.edu Date: 21 Sep 1999 14:24:09 GMT From: fherrman at hiwaay.net (Fred) Message-ID: <7s84e9$ncr$1 at hammer.msfc.nasa.gov> Organization: http://www.msfc.nasa.gov/ Path: newsfeed.cv.nrao.edu!chaos.aoc.nrao.edu!newshost.nmt.edu!newshost.lanl.gov!logbridge.uoregon.edu!newspeer1.nac.net!news.maxwell.syr.edu!news.msfc.nasa.gov!not-for-mail Subject: fits and 12 bit images? Newsgroups: sci.astro.fits Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk I've been reading the FITS Definition and was curious as to the best way to represent 12 bit convertor data. Would the best approach be to just 0 pad the upper four bits? From owner-fitsbits at kochab.cv.nrao.edu Tue Sep 21 11:38:58 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id LAA05981 for fitsbits-spinner; Tue, 21 Sep 1999 11:37:31 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id LAA05976 for ; Tue, 21 Sep 1999 11:37:28 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id LAA18643 for fitsbits at majordomo.cv.nrao.edu; Tue, 21 Sep 1999 11:37:27 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id LAA05967 for ; Tue, 21 Sep 1999 11:36:27 -0400 (EDT) Received: from newsfeed.cv.nrao.edu (newsfeed.cv.nrao.edu [192.33.115.17]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id LAA18628 for ; Tue, 21 Sep 1999 11:36:27 -0400 Received: (from news at localhost) by newsfeed.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id LAA04543; Tue, 21 Sep 1999 11:36:26 -0400 To: fitsbits at fits.cv.nrao.edu Date: 21 Sep 1999 15:18:07 GMT From: thompson at orpheus.nascom.nasa.gov (William Thompson) Message-ID: <7s87jf$s95 at post.gsfc.nasa.gov> Organization: NASA Goddard Space Flight Center -- Greenbelt, Maryland USA Path: newsfeed.cv.nrao.edu!newsgate.duke.edu!newsfeed.berkeley.edu!news.msfc.nasa.gov!centauri!newsfeed.gsfc.nasa.gov!orpheus.nascom.nasa.gov!thompson Subject: Coordinate Systems for Solar Image Data Newsgroups: sci.astro.fits Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk I would like to open up the following (PostScript) document for discussion within the solar physics and FITS community: http://orpheus.nascom.nasa.gov/~thompson/papers/coordinates.ps Here are the title and abstract: COORDINATE SYSTEMS FOR SOLAR IMAGE DATA William T. Thompson A set of formal systems for describing the coordinates of solar image data is proposed. These systems build on current practice in applying coordinates to solar image data. Both heliographic and heliocentric coordinates are discussed. A distinction is also drawn between heliocentric and helioprojective coordinates, where the latter takes the observer's exact geometry into account. The extension of these coordinate systems to observations made from non-terrestial viewpoints is discussed. A formal system for incorporation of these coordinates into FITS files, based on the FITS World Coordinate System, is described, together with examples. Thank you, William Thompson From owner-fitsbits at kochab.cv.nrao.edu Tue Sep 21 14:06:07 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id OAA06297 for fitsbits-spinner; Tue, 21 Sep 1999 14:04:26 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id OAA06292 for ; Tue, 21 Sep 1999 14:04:22 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id OAA19336 for fitsbits at majordomo.cv.nrao.edu; Tue, 21 Sep 1999 14:04:21 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id NAA06267 for ; Tue, 21 Sep 1999 13:58:03 -0400 (EDT) Received: from newsfeed.cv.nrao.edu (newsfeed.cv.nrao.edu [192.33.115.17]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id NAA19314 for ; Tue, 21 Sep 1999 13:58:02 -0400 Received: (from news at localhost) by newsfeed.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id NAA08701; Tue, 21 Sep 1999 13:58:02 -0400 To: fitsbits at fits.cv.nrao.edu Date: 21 Sep 1999 17:57:04 GMT From: msz at sirius.astrouw.edu.pl (Michal Szymanski) Message-ID: Organization: NASK News Server Path: newsfeed.cv.nrao.edu!newsgate.duke.edu!newsfeed.mathworks.com!fu-berlin.de!news.icm.edu.pl!news.nask.pl!msz References: <36489C6E.A5EB7A2D at tetra.gsfc.nasa.gov> <37E69173.41015ACD at tetra.gsfc.nasa.gov> Subject: Re: Announcement: CFITSIO v2.033 Newsgroups: sci.astro.fits Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk On 20 Sep 1999 16:16:57 -0400, William Pence wrote: > **** CFITSIO v2.033 Release Announcement **** > >A new version of the CFITSIO library for reading and writing FITS files is now >available at > > http://heasarc.gsfc.nasa.gov/fitsio > Is it available somewhere else then in HEASARC site? I keep getting: Could not connect to heasarc.gsfc.nasa.gov: Connection refused. regards, Michal. -- Michal Szymanski (msz at astrouw.edu.pl) Warsaw University Observatory, Warszawa, POLAND From owner-fitsbits at kochab.cv.nrao.edu Wed Sep 22 08:40:27 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id IAA10290 for fitsbits-spinner; Wed, 22 Sep 1999 08:39:55 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id IAA10285 for ; Wed, 22 Sep 1999 08:39:51 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id IAA22079 for fitsbits at majordomo.cv.nrao.edu; Wed, 22 Sep 1999 08:39:51 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id FAA10172 for ; Wed, 22 Sep 1999 05:01:47 -0400 (EDT) Received: from newsfeed.cv.nrao.edu (newsfeed.cv.nrao.edu [192.33.115.17]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id FAA21536 for ; Wed, 22 Sep 1999 05:01:46 -0400 Received: (from news at localhost) by newsfeed.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id FAA30766; Wed, 22 Sep 1999 05:01:45 -0400 To: fitsbits at fits.cv.nrao.edu Date: Wed, 22 Sep 1999 09:54:13 +0100 From: Peter Bunclark Message-ID: <37E89934.CF8B3DF5 at ast.cam.ac.uk> Organization: Institute of Astronomy Path: newsfeed.cv.nrao.edu!chaos.aoc.nrao.edu!newshost.nmt.edu!rutgers!faatcrl.faa.gov!hammer.uoregon.edu!newsfeed.direct.ca!news.maxwell.syr.edu!tank.news.pipex.net!pipex!server1.netnews.ja.net!pegasus.csx.cam.ac.uk!not-for-mail References: <7s84e9$ncr$1 at hammer.msfc.nasa.gov> Subject: Re: fits and 12 bit images? Newsgroups: sci.astro.fits Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk Fred wrote: > I've been reading the FITS Definition and was curious as to the best way to > represent 12 bit convertor data. Would the best approach be to just 0 pad the > upper four bits? Yes. From owner-fitsbits at kochab.cv.nrao.edu Wed Sep 22 15:54:49 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id PAA02522 for fitsbits-spinner; Wed, 22 Sep 1999 15:54:23 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id PAA02480 for ; Wed, 22 Sep 1999 15:54:19 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id PAA23878 for fitsbits at majordomo.cv.nrao.edu; Wed, 22 Sep 1999 15:54:18 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id PAA25803 for ; Wed, 22 Sep 1999 15:15:10 -0400 (EDT) Received: from palantir.cv.nrao.edu (tismail at palantir.cv.nrao.edu [192.33.115.254]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id PAA23780 for ; Wed, 22 Sep 1999 15:15:10 -0400 Received: (from tismail at localhost) by palantir.cv.nrao.edu (8.8.5/8.8.5) id PAA13725 for ; Wed, 22 Sep 1999 15:14:20 -0400 Received: from wheelo.gsfc.nasa.gov(128.183.50.20) by palantir.cv.nrao.edu via smap (V1.3) id sma013006; Wed Sep 22 15:14:19 1999 Received: from tetra.gsfc.nasa.gov (tetra.gsfc.nasa.gov [128.183.16.178]) by wheelo.gsfc.nasa.gov (8.8.8/8.8.8) with ESMTP id PAA02151 for ; Wed, 22 Sep 1999 15:09:14 -0400 (EDT) Received: from tetra.gsfc.nasa.gov (localhost [127.0.0.1]) by tetra.gsfc.nasa.gov (8.8.8+Sun/8.8.8) with ESMTP id PAA14057; Wed, 22 Sep 1999 15:07:43 -0400 (EDT) Message-ID: <37E928FF.C1B90907 at tetra.gsfc.nasa.gov> Date: Wed, 22 Sep 1999 15:07:43 -0400 From: William Pence Organization: NASA/GSFC X-Mailer: Mozilla 4.51 [en] (X11; U; SunOS 5.6 sun4u) X-Accept-Language: en MIME-Version: 1.0 To: FITSBITS Subject: FITS compression References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk A Proposal for Representing Compressed Images in FITS Format ------------------------------------------------------------ A small group of us have been experimenting with ways to represent compressed images in FITS format and have drafted a proposal that we would like to submit for comments or suggestions from other FITS users. The current draft proposal is available in html format at: http://legacy.gsfc.nasa.gov/docs/heasarc/fits/compress/compress_image.html or in postscript format at http://legacy.gsfc.nasa.gov/docs/heasarc/fits/compress/compress_image.ps In brief, our proposed technique is to first divide the n-dimensional image into a rectangular grid of one or more subimages or 'tiles', then compress each tile individually and store the resulting byte stream in a row of a variable-length column in a binary table. Any number of different compression algorithms may be supported by this convention and we specifically describe a few possible algorithms in the appendixes to the proposal. The appendixes are currently incomplete, but we eventually intend to provide a complete description of each supported compression algorithm. We are currently developing prototype implementations of this proposal. In particular, I will be giving a presentation at next month's ADASS meeting that gives a progress report on supporting this convention from within the CFITSIO library. Bill Pence, NASA/GSFC, on behalf of Richard White, STScI Perry Greenfield, STScI Doug Tody, NOAO From owner-fitsbits at kochab.cv.nrao.edu Wed Sep 22 23:19:36 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id XAA18514 for fitsbits-spinner; Wed, 22 Sep 1999 23:18:56 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id XAA18495 for ; Wed, 22 Sep 1999 23:18:52 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id XAA25375 for fitsbits at majordomo.cv.nrao.edu; Wed, 22 Sep 1999 23:18:52 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id TAA18881 for ; Wed, 22 Sep 1999 19:36:44 -0400 (EDT) Received: from newsfeed.cv.nrao.edu (newsfeed.cv.nrao.edu [192.33.115.17]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id TAA25043 for ; Wed, 22 Sep 1999 19:36:43 -0400 Received: (from news at localhost) by newsfeed.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id TAA21835; Wed, 22 Sep 1999 19:36:42 -0400 To: fitsbits at fits.cv.nrao.edu Date: 22 Sep 1999 23:21:15 GMT From: thompson at orpheus.nascom.nasa.gov (William Thompson) Message-ID: <7sbo9b$glb at post.gsfc.nasa.gov> Organization: NASA Goddard Space Flight Center -- Greenbelt, Maryland USA Path: newsfeed.cv.nrao.edu!newsgate.duke.edu!newsfeed.berkeley.edu!news.msfc.nasa.gov!centauri!newsfeed.gsfc.nasa.gov!orpheus.nascom.nasa.gov!thompson References: <37E928FF.C1B90907 at tetra.gsfc.nasa.gov> Subject: Re: FITS compression Newsgroups: sci.astro.fits Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk William Pence writes: >A Proposal for Representing Compressed Images in FITS Format >------------------------------------------------------------ >A small group of us have been experimenting with ways to represent compressed >images in FITS format and have drafted a proposal that we would like to submit >for comments or suggestions from other FITS users. The current draft proposal >is available in html format at: >http://legacy.gsfc.nasa.gov/docs/heasarc/fits/compress/compress_image.html >or in postscript format at >http://legacy.gsfc.nasa.gov/docs/heasarc/fits/compress/compress_image.ps (rest deleted) This is a very interesting proposal. However, if I understand it right, only one column in a binary table could support compressed data, which is pretty restrictive. It would be better if multiple columns could be compressed to better match the present capabilities of binary tables. Otherwise, for some of us at least, it would be a major change in the way that binary tables are organized. For example, in our own project, we use different columns for different wavelengths. William Thompson From owner-fitsbits at kochab.cv.nrao.edu Thu Sep 23 10:27:15 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id KAA13276 for fitsbits-spinner; Thu, 23 Sep 1999 10:23:54 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id KAA13271 for ; Thu, 23 Sep 1999 10:23:50 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id KAA26825 for fitsbits at majordomo.cv.nrao.edu; Thu, 23 Sep 1999 10:23:50 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id KAA13255 for ; Thu, 23 Sep 1999 10:12:55 -0400 (EDT) Received: from palantir.cv.nrao.edu (tismail at palantir.cv.nrao.edu [192.33.115.254]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id KAA26804 for ; Thu, 23 Sep 1999 10:12:54 -0400 Received: (from tismail at localhost) by palantir.cv.nrao.edu (8.8.5/8.8.5) id KAA28624 for ; Thu, 23 Sep 1999 10:12:05 -0400 Received: from wheelo.gsfc.nasa.gov(128.183.50.20) by palantir.cv.nrao.edu via smap (V1.3) id sma028529; Thu Sep 23 10:11:59 1999 Received: from tetra.gsfc.nasa.gov (tetra.gsfc.nasa.gov [128.183.16.178]) by wheelo.gsfc.nasa.gov (8.8.8/8.8.8) with ESMTP id KAA27814 for ; Thu, 23 Sep 1999 10:06:44 -0400 (EDT) Received: from tetra.gsfc.nasa.gov (localhost [127.0.0.1]) by tetra.gsfc.nasa.gov (8.8.8+Sun/8.8.8) with ESMTP id KAA14677; Thu, 23 Sep 1999 10:04:42 -0400 (EDT) Message-ID: <37EA3379.8F69B5B1 at tetra.gsfc.nasa.gov> Date: Thu, 23 Sep 1999 10:04:41 -0400 From: William Pence Organization: NASA/GSFC X-Mailer: Mozilla 4.51 [en] (X11; U; SunOS 5.6 sun4u) X-Accept-Language: en MIME-Version: 1.0 To: fitsbits at fits.cv.nrao.edu Subject: Re: FITS compression References: <37E928FF.C1B90907 at tetra.gsfc.nasa.gov> <7sbo9b$glb at post.gsfc.nasa.gov> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk William Thompson wrote: > > >http://legacy.gsfc.nasa.gov/docs/heasarc/fits/compress/compress_image.html > > This is a very interesting proposal. However, if I understand it right, only > one column in a binary table could support compressed data, which is pretty > restrictive. It would be better if multiple columns could be compressed to > better match the present capabilities of binary tables. Otherwise, for some of > us at least, it would be a major change in the way that binary tables are > organized. For example, in our own project, we use different columns for > different wavelengths. It is a little confusing, but this proposal only applies to compressing images that would otherwise be stored in a FITS primary array or IMAGE extension. The compressed image bytes are then stored in a binary table, which serves as a way of indexing the location of different pieces of the image. Being able to compress ASCII or binary tables is also an important issue, but the current proposal does not address that topic. -Bill Pence From owner-fitsbits at kochab.cv.nrao.edu Thu Sep 23 12:05:39 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id MAA14888 for fitsbits-spinner; Thu, 23 Sep 1999 12:05:20 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id MAA14883 for ; Thu, 23 Sep 1999 12:05:16 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id MAA28141 for fitsbits at majordomo.cv.nrao.edu; Thu, 23 Sep 1999 12:05:15 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id KAA13300 for ; Thu, 23 Sep 1999 10:39:29 -0400 (EDT) Received: from palantir.cv.nrao.edu (tismail at palantir.cv.nrao.edu [192.33.115.254]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id KAA26924 for ; Thu, 23 Sep 1999 10:39:28 -0400 Received: (from tismail at localhost) by palantir.cv.nrao.edu (8.8.5/8.8.5) id KAA20790 for ; Thu, 23 Sep 1999 10:38:39 -0400 Received: from poseidon.ifctr.mi.cnr.it(155.253.16.87) by palantir.cv.nrao.edu via smap (V1.3) id sma020525; Thu Sep 23 10:38:24 1999 Received: from localhost (lucio at localhost) by poseidon.ifctr.mi.cnr.it (8.9.1/8.9.1) with ESMTP id QAA10410 for ; Thu, 23 Sep 1999 16:37:18 +0200 (MET DST) Date: Thu, 23 Sep 1999 16:37:17 +0200 (MET DST) From: Lucio Chiappetti To: fitsbits at fits.cv.nrao.edu Subject: Re: FITS compression In-Reply-To: <37EA3379.8F69B5B1 at tetra.gsfc.nasa.gov> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk On Thu, 23 Sep 1999, William Pence wrote: > It is a little confusing, but this proposal only applies to compressing > images that would otherwise be stored in a FITS primary array or IMAGE that was clear enough (at least to me) ... > extension. The compressed image bytes are then stored in a binary table, ...being the binary table format already overloaded with different (semantic) applications, and being the "variable format" the most awkward feature in it, would it not be neater to define "compressed images" as an altogether *NEW* FITS extension ? Its data area could then be arranged as a stream of compressed data according to any of the proposed formats, and just header keywords used to describe it. ---------------------------------------------------------------------------- Lucio Chiappetti - IFCTR/CNR - via Bassini 15 - I-20133 Milano (Italy) ---------------------------------------------------------------------------- L'Italia ripudia la guerra [...] come Italy repudiates war {...] as a mezzo di risoluzione delle controversie way of resolution of international internazionali controversies [Art. 11 Constitution of the Italian Republic] ---------------------------------------------------------------------------- For more info : http://www.ifctr.mi.cnr.it/~lucio/personal.html ---------------------------------------------------------------------------- From owner-fitsbits at kochab.cv.nrao.edu Thu Sep 23 13:38:52 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id NAA14999 for fitsbits-spinner; Thu, 23 Sep 1999 13:38:32 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id NAA14994 for ; Thu, 23 Sep 1999 13:38:29 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id NAA28363 for fitsbits at majordomo.cv.nrao.edu; Thu, 23 Sep 1999 13:38:28 -0400 Received: from fits.cv.nrao.edu (IDENT:root at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id NAA14985 for ; Thu, 23 Sep 1999 13:35:44 -0400 (EDT) Received: from palantir.cv.nrao.edu (tismail at palantir.cv.nrao.edu [192.33.115.254]) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) with ESMTP id NAA28343 for ; Thu, 23 Sep 1999 13:35:43 -0400 Received: (from tismail at localhost) by palantir.cv.nrao.edu (8.8.5/8.8.5) id NAA22896 for ; Thu, 23 Sep 1999 13:34:53 -0400 Received: from wheelo.gsfc.nasa.gov(128.183.50.20) by palantir.cv.nrao.edu via smap (V1.3) id sma021840; Thu Sep 23 13:34:16 1999 Received: from tetra.gsfc.nasa.gov (tetra.gsfc.nasa.gov [128.183.16.178]) by wheelo.gsfc.nasa.gov (8.8.8/8.8.8) with ESMTP id NAA03960 for ; Thu, 23 Sep 1999 13:29:15 -0400 (EDT) Received: from tetra.gsfc.nasa.gov (localhost [127.0.0.1]) by tetra.gsfc.nasa.gov (8.8.8+Sun/8.8.8) with ESMTP id NAA14897; Thu, 23 Sep 1999 13:26:12 -0400 (EDT) Message-ID: <37EA62B4.B9AA9C7D at tetra.gsfc.nasa.gov> Date: Thu, 23 Sep 1999 13:26:12 -0400 From: William Pence Organization: NASA/GSFC X-Mailer: Mozilla 4.51 [en] (X11; U; SunOS 5.6 sun4u) X-Accept-Language: en MIME-Version: 1.0 To: fitsbits at fits.cv.nrao.edu Subject: Re: FITS compression References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk Lucio Chiappetti wrote: > > > extension. The compressed image bytes are then stored in a binary table, > > ...being the binary table format already overloaded with different (semantic) > applications, and being the "variable format" the most awkward feature in it, > would it not be neater to define "compressed images" as an altogether *NEW* > FITS extension ? > > Its data area could then be arranged as a stream of compressed data according > to any of the proposed formats, and just header keywords used to describe it. We need the full flexibility offered by binary tables for this compression convention, so we don't want to invent a new type of extension with all the same features. In the general case, the binary table containing the compressed image will contain multiple rows (each compressed image tile goes into a separate row), and multiple columns. There may be 2 variable length columns, one for the tiles that could be compressed and one for any tiles that could not be compressed. There can also be any number of other columns in the table containing other parameters that are needed to compress or uncompress the image tiles. Only in the simplest case where an entire image is compressed as a single tile would you end up with a binary table that has just a single row and potentially only a single column. ____________________________________________________________________ Dr. William Pence pence at tetra.gsfc.nasa.gov NASA/GSFC Code 662 HEASARC +1-301-286-4599 (voice) Greenbelt MD 20771 +1-301-286-1684 (fax) From owner-fitsbits at kochab.cv.nrao.edu Fri Sep 24 16:15:59 1999 Received: (from majordom at localhost) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) id QAA20807 for fitsbits-spinner; Fri, 24 Sep 1999 16:15:50 -0400 (EDT) Received: from fits.cv.nrao.edu (IDENT:dwells at fits.cv.nrao.edu [192.33.115.8]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id QAA20802 for ; Fri, 24 Sep 1999 16:15:47 -0400 (EDT) Received: (from dwells at localhost) by fits.cv.nrao.edu (8.8.7/8.8.8/CV-2.2) id QAA32594 for fitsbits at majordomo.cv.nrao.edu; Fri, 24 Sep 1999 16:15:46 -0400 Received: from cv3.cv.nrao.edu (cv3.cv.nrao.edu [192.33.115.2]) by kochab.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id OAA20501 for ; Fri, 24 Sep 1999 14:03:34 -0400 (EDT) Received: from primate.cv.nrao.edu (IDENT:egreisen at primate.cv.nrao.edu [192.33.115.67]) by cv3.cv.nrao.edu (8.9.3/8.9.3/CV-SOL-3.0) with ESMTP id OAA25981 for ; Fri, 24 Sep 1999 14:03:32 -0400 (EDT) Received: (from egreisen at localhost) by primate.cv.nrao.edu (8.9.3/NRAO/CV-2.0) id OAA30456; Fri, 24 Sep 1999 14:03:31 -0400 Date: Fri, 24 Sep 1999 14:03:31 -0400 Message-Id: <199909241803.OAA30456 at primate.cv.nrao.edu> X-Authentication-Warning: primate.cv.nrao.edu: egreisen set sender to egreisen at nrao.edu using -f From: Eric Greisen MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: fitsbits at nrao.edu Subject: WCS to be voted upon at ADASS X-Mailer: VM 6.35 under Emacs 20.4.1 Sender: owner-fitsbits at kochab.cv.nrao.edu Precedence: bulk The ADASS meeting in Kona is coming up and the FITS BoF is scheduled for Monday night (October 4, 1999). At that time, we will discuss and probably vote on sending the three World Coordinates papers to the American, European, and Japanese FITS committees for formal votes. Assuming that all is favorable, the three papers will then be submitted to A&AS and become part of "the" FITS standard. If you have not fetched and read these papers you really should do so. They had their last major revisions in mid May, 1999. Since then, we discovered that A&AS uses computer modern fonts rather than Times Roman used by A&A, although both use the same LaTeX2e macros package. We have had to rearrange things a bit and have made a few minor wording corrections to accommodate this change. The papers are ftp://ftp.cv.nrao.edu/NRAO-staff/egreisen/wcs.ps.gz (Paper I, general conventions, 96 kbyte) ftp://ftp.cv.nrao.edu/NRAO-staff/egreisen/ccs.ps.gz (Paper II, celestial coordinates, 169 kbyte) ftp://ftp.cv.nrao.edu/NRAO-staff/egreisen/scs.ps.gz (Paper III, spectral coordinates, 74 kbyte) The ADASS poster and paper are also available as ftp://ftp.cv.nrao.edu/NRAO-staff/egreisen/Poster99.ps.gz (Mark did a lovely job, 59 kbyte) ftp://ftp.cv.nrao.edu/NRAO-staff/egreisen/Paper99.ps.gz (Executive summary paper, 25 kbyte) Please read these and be prepared to discuss them via e-mail or at the ADASS. Thank you Eric Greisen Mark Calabretta