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Call for Regional committee votes on HPX

From: <mcalabre_at_email.protected>
Date: Tue, 14 Feb 2006 12:31:23 +1100

<pre id="body">
<a name="start" accesskey="j" id="start"></a>Greetings,
The IAU FITS Working Group has almost finished digesting the 64-bit
integer proposals! The uncontroversial ones (2: 'Q' variable-length
array descriptor) and (3: TFORMn = 'K') were accepted without dissent,
(1: BITPIX = 64) received a couple of 'no' votes and so was deferred
for six months, and (4: changing 'P' & 'Q' descriptors from signed to
unsigned) after a lot of discussion is now being voted on.
However, Bill Pence now wants to start on the next round, that of adding
a new projection type (HPX) to WCS Paper II. Since I am the first
author of this proposal I won't say much, other than that noone has
raised any objections against it. The request for votes is appended.
Note that I will be on vacation between Feb/27 and Mar/17 so would like
an answer, if not before, then soon after mid-March.
Cheers, Mark
>>>
FITS WCS Paper II was written with the intention that new spherical
projection types might be added in future. The HEALPix projection,
described in detail in "Mapping on the HEALPix grid" by
Mark Calabretta and Boud Roukema, is such a projection (see
http://www.atnf.csiro.au/~mcalabre).
Section 6 of the paper presents the HEALPix projection, 'HPX' in FITS,
in the same terms as those in WCS Paper II. HPX was announced on
FITSBITS and FITSWCS and implemented in WCSLIB in early 2005 with the
formal 30-day comment period commencing in November.
It is now time for the members of the 4 regional FITS committees to vote
on whether to approve this HEALPix convention as part of the official
FITS standard. Please cast your vote of 'Yes', 'No', or 'Abstain'
on the following proposition:
    Should the proposed conventions for representing the HEALPix
    projection in FITS files, given in Section 6 of the paper
    "Mapping on the HEALPix grid" by Mark Calabretta and Boud Roukema,
    be approved as an extension of the FITS World Coordinate System
    (WCS) standard?
Received on 2006-02-14 12:31:42