GradientXTerminator

Purchase License

A license for GradientXTerminator is available for $49.95. Select your operating system:

Do you own a copy of Ron Wodaski's The Zone System for Astro Imaging? If so, you are eligible to purchase a GradientXTerminator license at $10 off the regular price! Enter the last word on page 139 of the book in the following box and click "Update." This page will then re-load with the discounted price.

Want to upgrade or change operating systems? If you already own a permanent license for GradientXTerminator on one operating system, you are eligible for a special upgrade price of $19.95. To take advantage of this offer, enter the email address you used when purchasing your original, full (non-upgrade) license and the permanent license key you received, then click "Submit:" (Note: the Zone System discount does not apply to this offer.)