NOTICE: CyberSky sales have stopped!

Due to my CyberSky astronomy software generating low revenue over the last year, Digital River MyCommerce, the company that has handled online sales and fulfillment for me for many years, has terminating my account.

The software business has changed dramatically since I first released CyberSky as shareware, a term I don’t think is used any more. I took the termination of my account as a sign I should retire, and have stopped sales of the program, effective May 3, 2024.

Thank you for your support, for sending me bug reports and a lot of suggestions to help me make CyberSky better, and especially for the many kind words you’ve sent me about my software over nearly three decades.


Program updates

You can update your copy of CyberSky 5 to version 5.2.1 by using the patch found below.

Use the link below to download the patch.

Setup program icon CyberSky 5.2.1 Full Patch (5.32 MB)

The patch includes all of the bug fixes, minor enhancements, and other changes introduced since the release of CyberSky 5.

Note   A full version of CyberSky 5 must be installed on your computer before you can use the CyberSky 5.2.1 patch. The patch won’t work with a trial version of CyberSky 5, nor will it work with CyberSky 1, 2, 3, or 4.

Installing the update

To install the CyberSky update on your computer, download the patch file, double-click the file to start the patch program, and then follow the instructions that appear.

During installation, the patch program modifies or “patches” the CyberSky program and Help file installed on your computer so that both include all of the improvements introduced in newer releases.

After you install the CyberSky update, you don’t need the patch file to run the program, but you should save it in case you need to reinstall CyberSky.

Release notes

Notes about recent releases, including descriptions of bug fixes, minor enhancements, and other changes to the program are found below.

CyberSky 5.2.1
(August 10, 2023)

CyberSky 5.2
(November 23, 2021)

CyberSky 5.1.2
(September 27, 2018)

CyberSky 5.1.1
(April 24, 2017)

CyberSky 5.1
(November 22, 2016)

CyberSky 5.0.3
(October 4, 2011)

CyberSky 5.0.2
(January 4, 2011)

CyberSky 5.0.1
(November 22, 2010)

CyberSky 5.0
(November 10, 2010)