Wednesday, January 18, 2023

discussed eyepiece shopping

Helped Jeanette (I hope) of Nova Scotia with her eyepiece shopping.

She had started to settle on a particular focal length. But for her small refractor, I wasn't sure it was right.

We discussed the exit pupil at length (referring to the RASC Observer's Handbook), eye relief, effective maximum magnification, costs, doublers, a try-before-you-buy approach, Canadian vendors to consider, Ontario vendors to avoid, etc. Oh, yes, and old eyes...

Lots for her to absorb.

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