Welcome to the download area for the commercial version of XEphem 3.7.7. The three large tar files are the contents of three CDs. You definitely want disk1, others depend on your interests, bandwidth and patience.
Note if you have any prior release within the 3.7.* series you don't need disk2 or disk3 again, they have not changed since 3.7 was released in 2005. Disk1 includes all stars down to magnitude 15 which is about everything you can see visually in a 14 inch telescope; disks 2 and 3 extend this to about magnitude 18.5 so these are mainly for those using much larger telescopes or who perform deep sky photography.
To download a file, right-click then "Save as..." in a convenient folder. If you have trouble installing any of the files, compare its md5 checksum and download again until yours matches, then try installing again.
|File name||Bytes||Purpose||MD5 checksum|
|XEphem-3.7.7-disk1.tar.gz||499485723||Main program, GSC 1.2, all supporting files, source code||89ee3845c873b67c4498d133130a658b|
|XEphem-3.7-disk2.tar.gz||595,695,150||Hubble GSC 184.108.40.206 northern hemisphere||82910c000487b3c6354314877561a234|
|XEphem-3.7-disk3.tar.gz||573,425,880||Hubble GSC 220.127.116.11 southern hemisphere||3f15a4b345f99c3e11d60d5e65e2d2b6|
Specific instructions for each class of UNIX system:
Download the desired files, explode and run the install script for each as root. For example for disk1:
% tar xfz XEphem-3.7.7-disk1.tar.gz % cd XEphem-3.7.7-disk1 % sudo ./linux_install.sh
Disk1: Download and double-click to explode. Inside you will find the XEphem app. Just run it, you are good to go, there is no "installation" required. You may copy the XEphem.app anywhere you like.
Disk2 and Disk3: Download and double-click to explode. Inside you will find an orange package icon. Double-click this package and follow the instructions.
See the README in the disk1 image.
See the README in the disk1 image for more information. Also check the FAQ for any last minute instructions at xephem.com.
If you have any questions, please contact email@example.com.
Thank you for your patronage.
President, Clear Sky Institute Inc.