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Long focus lenses - Surplus Shed
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30-07-2019, 09:02 AM
Merlin66
(Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,907
Long focus lenses - Surplus Shed
https://www.surplusshed.com/pages/item/L3920D.html
Surplus Shed have a special running at the moment on long focus lenses- 2500 to 4000+mm with apertures of 150mm.
These sound ideal for anyone considering building a spectrohelioscope.
Merlin66
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