Quote:
Originally Posted by astro744
No. Typical narrow Ha filter will be 12 or 6nm. Typical Ha solar telescope will be 0.7 Angstrom. 1 Angstrom=0.1 nanometer. Energy rejection filter also to be in place in Solar telescope. This very narrow bandwidth is why they cost so much.
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Thank you for that...I did google but did not find what you told me in my initial search and I had thought the band was different but could not recall its details nevertheless I did wonder if a ordinary Ha filter would be a step above white imaging so with the experts gathered here I thought it was a good opportunity to ask. Thanks again.
Alex