Observing the Sun: Full-Aperture Filters
For almost all occasions the only perfectly safe way to view the Sun is to project the image, and that is our next major step, reviewed in the next chapter. Before doing so, there is a risk with some types of telescope which is of such potentially fatal consequences that it merits repetition in some detail here.
KeywordsLight Reduction Bright Patch Bluish Tinge Sight Loss Reputable Supplier
Unable to display preview. Download preview PDF.