Comparing this image with the one shot using the ST-80 achromat, the difference is definitely noticeable. The edges of the moon are free of any purple fringe. Also the moon is sharper and obviously a bit closer due to the 600mm focal length of the ED80. Last Updated on September 1, 2019
Tag Archives: Refractor
Upgrading to an ED80 refractor
At this point, the main problem in my images that really annoys me is the chromatic aberration (the purple fringe around stars). Also the field curvature of the ST80 is really bad, especially on a crop size sensor, as you begin to move away from the center of the frame. So to achieve a considerable […]
First image with telescope
Last Updated on September 4, 2019