I found that there is not a single spot on the surface of the sun that can be used to focus my digiscope. The only part with “contrast” is the limb of the sun...
Tag - sun
Get the best performance possible from your Lunt single-stacked or double-stacked pressure-tuned solar telescope with tuning.
We often see computer models demonstrating size differences of celestial objects, but none of that is as powerful as seeing this happen with our own eyes.
When is the best time of day for solar imaging? Why? Learn the incredible effect of atmospheric seeing conditions on solar imaging.
Two of the best ways for making solar flat fields to correct uneven illumination in your solar images and mosaics.
