Quote:
Originally Posted by mental4astro
The main thing to note is that the effective aperture for a solar scope shouldn't exceed 60mm! Otherwise, even with the film, you may still allow too much heat to build up within the scope, and too much light.
Ever noticed how dedicated solar scopes are not all that large in diameter?
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Hmmm, sorry but that is not true. You can get any range of sizes for solar white light and Ha viewing. You can buy a Ha 200mm filter set from Lunt now. In the white light range there are filters for 14" SCT's by Thousand Oaks in glass.
I have seen home made filters made with film that have not created "too" much heat.
You can now buy a dedicated 8" solar scope from Lunt which was shown at NEAF.
