The telescope manufacturer William Optics offers very high-quality apochromatic and achromatic refractors which are very well suited to visual observation, and especially to astrophotography.
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William Optics
Diagonal mirror Dura Bright 90° 2"
$ 302.00
ready for shipping in 24
h
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William Optics
1,25'' 45° Amici prism on 1,25''
$ 186.00
ready for shipping in 24
h
