ZWO EAF Electronic Focuser Review

ZWO EAF 5V electronic focuser

ZWO – EAF 5V (Electronic Automatic Focuser) Price: $199 as of the time of this review (accessories sold separately). See current price Price $248 with accessories See current price Manufacturer: ZWO Introduction When is comes to astrophotography equipment and achieving the best images, experienced astrophotographers know that precise telescope focusing is critical. You could spend … Read more

Pegasus Powerbox Advanced Gen 2 Review

Pegasus Power Box Advanced

Pegasus Powerbox Advanced Generation 2 Price: $324 Manufacturer: Pegasus Astro Introduction Experienced astrophotographers know that technology has made this hobby much easier than it was 20 years, or even 10 years ago. Technology has allowed much of what we do to be automated. This type of automation requires power, and power requires cables. My setup … Read more

Introduction to Image Calibration

Calibration Caliper

What is Image Calibration? Image calibration is the process of correcting light frame images for extraneous information captured in the image that is caused by sensor noise, thermal noise, variations in pixel sensitivity and irregularities in the optical path, such as dust shadows. Calibration is typically done by correcting the light frame image with:1) Bias … Read more