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Herschel's Eyepieces!


Shibby

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Hi,

I was at the London Science Museum recently, I took a pic (with my phone hence the dodgy quality) of Sir William Herschel's wooden eyepieces. Just thought some of you might find them interesting.

Also, look at this Monopoly set ;) I think the should have called it Astronomonopoly!

post-17708-133877475186_thumb.jpg

post-17708-133877475191_thumb.jpg

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I'm sure I read somewhere that Herschel made his short focus eyepieces by dropping molten glass into water which produced single "lenses" for high powers. Back in the late 50's I made some short focus eyepieces by mounting the lenses from the front of pre-focus torch bulbs. They actually worked but were no match for a modern Ethos on any count except cost.

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There is some of Herschel's eyepieces in the museum at Bath. Some of them

have such a tiny eyelens its a wonder he could see anything through them,

let alone make ground breaking discoveries.

Dunno what he'd have thought of an Ethos.........!!

Cheers, Ed.

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Wow. It says there that he got magnifications of 1000 to 6000x.

Dream on. Even the great man couldn't possibly have got those magnifications, or if he did couldn't have seen anything!

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