Bio of Astronomer Annie Jump Cannon

Getting optimum focus for your imaging data is absolutely critical to get the best image you can.  Poor focusing is one of the major reasons for poor quality data.  Novice astro imagers know that focusing is af

Suggested targets for winter 2023 / 2024

Common problems with image capture as seen with how the stars look in the image

Setting your telescope's back focal distance

The impact of target altitude on imaging