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Each ASAS-SN telescope uses 4 commercial camera lenses, at about $10k each. http://www.nikonusa.com/en/Nikon-Products/Product/Camera-Lenses/2171/AF-S-NIKKOR-4
by phonon 10y ago
Each ASAS-SN telescope uses 4 commercial camera lenses, at about $10k each.
http://www.nikonusa.com/en/Nikon-Products/Product/Camera-Lenses/2171/AF-S-NIKKOR-400mm-f%252F2.8G-ED-VR.html http://www.nikonusa.com/en/Nikon-Products/Product/Camera-Len...
With one detector, at about $40k.
https://telescopes.net/store/pl23042-1-bi-proline-series-e2v-ccd230-42-1-143-back-illuminated-midband.html https://telescopes.net/store/pl23042-1-bi-proline-series-e2v...
- dr_zoidberg 10y agoThere are cheaper lenses and CCDs which might strike a better price/performance ratio too -- I think that was the original thought behind saying "100k is too expensive!". Of course, those items you linked are beautiful machines of precision and quality. But maybe with a cheaper system, more targets can be tracked at the same time. So a $1k lens with a $1k sensor in a $500 tracker gets you 40 "telescopes" for $100k instead of 1~2.