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CCDciel is free software released under the terms of the
GNU banner GNU General Public License can be used to solve the image you just take with your camera. Astrometric solving wil give the exact astronomical position of the image center, its orientation and size.

CCDciel requires a local copy of the software including the indexes on your computer. It can also run on a remote host using the provided script.

At page you can find detailed instructions how to install the software and indexes.


On Linux is probably packaged by your distribution. This is the easiest and preferred way to install the software.
For example on Debian or Ubuntu just do:

 sudo apt-get install


For macOS the best option is to get the version from CloudMakers.


A number of Windows package include a fully automated install of Cygwin and and it is best to get one of them. CCDciel do not use this applications but the they install. Cygwin is a tool required to run a compiled version of under Windows.

The following list indicate tested application and give the Cygwin path you must configure in the astrometry preferences.
At the time of writing all these application use the same 2010 version 0.38 of

  • ANSVR, set Cygwin path to C:\Users\[your user name]\AppData\Local\cygwin_ansvr
    Install up to step 9 as indicated in the web based instruction.
  • Astrotortilla, set Cygwin path to C:\cygwin
  • All sky plate solver, set Cygwin path to C:\Users\[your user name]\AppData\Local\Astrometry
  • Windows subsystem for Linux, is not a real option for now as it require a 64 bits version of CCdciel but there is almost no 64 bits ASCOM drivers available.
en/documentation/ · Last modified: 2018/01/29 22:05 by pch