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"
$ 296.00
ready for shipping in 24
h
Add to comparison
William Optics
Diagonal prism Cat 51 WIFD 90° 1.25"
$ 205.00
ready for shipping in 24
h
