This IDL facility provides a means to turn a HEALPix data set
into a DomeMaster
compliant image (azimuthal equidistant projection of the half-sphere
in a PNG or lossless JPEG file) that can be projected on a planetarium.
See eg
http://fulldome.ryanwyatt.net/fulldome_domemasterSpec_v05.pdf
Required
name of a FITS file containing
the HEALPix map in an extension or in the image field, or name of an online variable (either array or
structure) containing the HEALPix map (See note below);
if Save is set : name of an IDL saveset file containing
the HEALPix map stored under the variable data (default : none)
Select
Optional
column of the BIN FITS table to be plotted, can be either – a name : value given in TTYPEi of the FITS file
NOT case sensitive and can be truncated, (only letters, digits and underscore are valid) – an integer : number i of the column
containing the data, starting with 1 (also valid if
File is an online array) default:1 for full sky maps, 'SIGNAL' column for FITS files
containing cut sky maps
KEYWORDS
JPEG=
name of the output lossless
JPEG file
PNG=
name of the output PNG file
/PREVIEW
if set, the output JPEG or PNG
file will be previewed
/HELP
Prints out the documentation header
PXSIZE=
number of pixels in each
dimension of the square output image
those keywords have the same meaning as in
azeqview and
mollview
DESCRIPTION
hpx2dm reads in a HEALPix sky map in FITS format or from a memory array
and generates a PNG or JPEG file containing a DomeMaster compliant map
(azimuthal equidistant projection of the half-sky).