Quote:
Originally Posted by Merlin66
Marc,
With a full aperture (Baader Solar filter) ALL telescopes are safe to use.
This gives great White Light Imaging.
Many of us use Barlow’s or Powermates to improve the plate scale. Not an issue behind a safe solar filter.
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Thanks Ken. No heat issues even with a complex barlow having multiple corrective lenses such as the quadruplet Baader FFC?