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About CMBview
CMBview is a viewer for FITS files containing HEALPix sky maps, depicted on a 3d sphere
rendered with OpenGL. The sphere can be rotated interactively by clicking and dragging, and zoomed with the mouse wheel. New features in version 0.2.3 include:
- text entry of color scale bounds
- export a TIFF screenshot of the current viewport
A more detailed description of the features is here.
Feature gallery
Below are some screenshots. The texture of the image at the top of the page was also generated in CMBview. Download the HEALPix map if you need a small file to test (also the hpic C code used to generate this map might be of interest).
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Detail of a high resolution polarization map generated by synfast. Stokes vectors
can be modified interactively via the preference pane.
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Individual HEALPix pixels at the pole of a large map are resolved smoothly in render mode.
The circle touching the edge of the window is a small circle
at a latitude of 1 degree.
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You can make some interesting effects by modifying the lighting.
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Colormap selection. The map shown is a detail of the full sky H-alpha map assembled by
Douglas Finkbeiner (from a compilation of surveys from WHAM, VTSS, and SHASSA).
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Images more suitable for presentation can be made.
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Here the sphere is projected with a wide field of view rather than the
default orthographic projection (the map shown is the WMAP mask available here).
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Download Application
CMBview is now distributed as a universal binary, for native performance on both PPC and Intel Macs. Version 0.2.3 adds support for text entry of the map range, and export of TIFF screenshots. Click to download a disk image:
CMBview 0.2.3 (1.2 MB)
Source code
CMBview is distributed under the GPL. The source code (Cocoa/ObjC) is provided as an Xcode 2.2.1 project (see the ChangeLog). Click to download a zipped directory:
CMBview 0.2.3 source (1.1 MB)
The source is self-contained, and should compile on both Intel and PPC without modification or installation of anything else. It includes code from hpic by Theodore Kisner, HEALPix by Eric Hivon et. al, and CFITSIO by William D. Pence.
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