Clear Sky Institute, Inc


is pleased to offer


(XEphem logo background galaxy by Galaxy Photography)

Version 3.7.3

Available on 3 CD-Rs or download now online.


Your satisfaction is guaranteed!


Compared to the free version, the commerical version of XEphem adds the following advantages:

To order online, please go to our standard Order Form. If you prefer not to use the web, you may send us a check, money order or purchase order. You can find the total amount to remit by filling out the same form mentioned above, clicking Compute total, and then just not proceeding with the final Purchase step. Send to:

XEphem Orders
123 Mustang Dr.  
Socorro NM USA 87801

Federal Tax ID 42-1467154

Inquiries regarding commercial applications, large quantities or special considerations are welcome. Send a description of your situation to us at xephem@clearskyinstitute.com.

Packaging

XEphem may be purchased as 3 CDs or via Internet download. The content is identical. You decide based on your desire for local media and available Internet bandwidth. Those who purchase the real CDs will also be given access to the download site at no additional cost. Either way, everyone will have access to any future updates to release 3.7 of XEphem and its catalogs.

The same CDs serve Linux, MacOS X and all other UNIX-like systems. All CDs include an easy-to-use installation script for Linux or other UNIX and a standard Mac Package for use with the OSX Package Installer. CD 1 contains everything needed for a complete XEphem installation except that CDs 2 and 3 contain the Hubble GSC 2.2.0.1 which is a stellar catalog with some 450 million stars complete to magnitude 18.5. Each CD is about 500 MB.

We do not support XEphem on Microsoft Windows. However, depending on your skills and ambition, you might be able to get it to work yourself by compiling the free source code using porting tools such as Cygwin or MKS Toolkit. We can go so far as to say that occasionally we do build XEphem using both these tools to make sure there are no significant problems. We also verify that all the supporting catalogs, images and other auxiliary files beyond the executable itself are compatible with these tools. So building the executable from source code is up to you, but once that is running everything else will work fine. We can also mention that linux and Windows coexist quite well using VMWare.

Catalogs

The following table lists the catalogs included with the commercial version of XEphem 3.7. Together these add up to approximately half a billion stars (that's an average of 3 stars per square arc minute), one million deep sky objects, 250 thousand minor planets and several spacecraft.

Satisfaction Guaranteed
Further inquires may be sent to xephem@clearskyinstitute.com