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Barlow Lens Page updated
By request, I have updated my Barlow Lens tutorial:
http://www.astunit.com/tutorials/barlow.htm In addition to some stylistic improvement, there is a new section on finding the focal length of a Barlow and the addition of a worked example for calculating amplification by adding extension tubes or putting the Barlow on the OTA side of the star diagonal. I hope this makes it more useful. As always, constructive criticism and suggestions for improvement are welcomed (but may not be acted on immediately! g). Best, Stephen -- + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + Stephen Tonkin | ATM Resources; Astro-Tutorials; Astro Books + + (N51.162 E0.995) | http://www.astunit.com + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + |
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