Missing Celestial Navigation Files

This download corrects an error that will appear when starting CAPN Almanac that indicates that the setup file is missing. This download contains all necessary setup and data files for the CAPN Almanac Celestial Navigator.

These files are now automatically included with the CAPN 8.3.20 software. Thus, this download is only necesary for those who wish to continue using earlier editions of The CAPN.

How To Install

Click the link below. In most instances, your web browser will ask if the file should be Opened, or Saved to your computer. Choose Save, then select a location to Save the downloaded file In. If you are unfamiliar with downloading and applying software patches, we recommend choosing your "Desktop"; select Save In, Desktop and press Save. Once the download completes, double-click the downloaded application that appears on your Desktop. This will install your Maptech application. Once that process is completed, you may run your TheCAPN application and delete the download from your Desktop.


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File Size 



For CAPN 8.3.x
Requires a full installation of The CAPN, version 8.3 or higher.

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Contacting Technical Support

First browse our website to get the answers you need. If you cannot find them, we suggest sending an email to

Support is available to registered users of versions 8.3 and newer from 10 AM to 4 PM EST/EDT, Monday through Friday.

CAPN Software LLC
Fax: 703.759.3266


Product Registration

To register your product follow the link below and complete the product registration form, you will receive an email with The CAPN registration code confirming your registration.

Product Registration Form

CAPN Software LLC // Fax: 703.759.3266