by Don Selle
Auto-Guiding Part 1
To Autoguide or not to Autoguide – it’s all About Noise
One of the questions that beginning astrophotographers ask these days is whether they need to acquire the equipment and learn the skills associated with autoguiding. With current technology, this is a valid question. This article will help you answer it. A little background info should help start us out.
Astrophotography, unlike most other types of photography, is all about capturing very dim objects many of which include elements that are barely brighter than the sky around them. Because of this, astrophotographers post process their images to increase the contrast between the object and the background sky thus creating images that look attractive to other people.