Key features in V2

bullet "Full globe" view to re-project a whole or crescent  moon image - see screenshots below
bulletImproved user interface with fully re-sizable picture windows
bulletMultiple monitor support
bulletSignificant speed improvements
bulletSupports cut/paste and drag/drop methods for loading images - especially useful for loading images from a web page
bulletOutput image viewer with support for zoom, rotate & flip image
bulletAutomatic image format conversion where necessary to 24-bit RGB

Of all the objects in the night sky the moon shows by far the greatest amount of detail through any telescope or imaging system. Unfortunately though only 59% of it can ever be seen from Earth and a fair portion of that area is only ever seen near to the lunar limb where the shapes and details of the craters are distorted by the oblique viewing angle. 

PlanetWarp is designed to get round that problem and re-project or warp your lunar images so that you see the edge features as though you were observing them from above. The program will work equally well for sunspots near the solar limb or planetary features but its primary purpose is for images of the moon.
For example here is a picture of the crater Bailly which is very near the Moons' Southern pole and hence is seen at a very oblique angle from the Earth...

... and here is the output from PlanetWarp showing the view of Bailly as if you were directly overhead

For further reading about re-mapping techniques refer to the article in Sky & Telescope January 2005 "A New Way of Looking at the Moon" by J.-P. Metsävainio


Planetwarp is distributed as a fully-functional 30-day trial version. After this period you must either purchase a licence or uninstall the software.

A licence costs £15 (GB pounds) and is locked to an individual PC (you will need to quote the Machine ID, as shown in the License dialog box in Plantwarp, when completing your license purchase). However, you may request an additional license key, free of charge, if you wish to run the software on a second machine or whenever you change your PC or operating system. Planetwarp is only licensed for non-commercial use, for any other use please contact the authors.

You license entitles you to all future updates of Planetwarp.  Link to licence purchase

System requirements:-

1024x768 or greater display resolution
Microsoft .NET framework V4 (Win 7 and later will usually have this installed, for Win XP SP3 you can download it from )

Planetwarp has been tested on Windows XP SP3 and Windows 7 but should work on other Windows versions also. Please note however that we are unable to offer any support for platforms other than those listed above.


The latest version of PlanetWarp can be downloaded here. This page also contains links to purchase a licence.


The following screen shots show some typical processing.

f33_crescent_050113.jpg (75026 bytes)     V2_define_circle.jpg (62739 bytes) The original image (far left) is loaded into PlanetWarp and the limb of the Moon is defined by clicking on five points. These are shown in red on the second image and the resultant circle fit is shown in green.
V2_user_interface2.jpg (150451 bytes)   V2_orbiter_warp.jpg (73752 bytes) The "orbiter view" tab allows you to see a thumbnail view of any point on the original image as if you were directly overhead. Clicking on the thumbnail produces a full resolution picture in a separate window.
V2_user_interface.jpg (140458 bytes)   V2_crescent_warp.jpg (122751 bytes)    V2_crescent_warp2.jpg (119373 bytes) The "full globe" tab has three sliders allowing the image to be rotated to any desired viewing angle. A full scale image can then be produced in the output picture window.


If you wish to report a bug or suggest an improvement to the software you may contact the authors at

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