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.
William Optics
Adjustable Flattener Reducer Flat6AIII
$ 432.00
ready for shipping in 24
h
William Optics
Flattner Flat61A for Z61
$ 335.00
ready for shipping in 24
h
William Optics
Flat GT
$ 324.00
ready for shipping in 3-7
days
William Optics
Flattener Flat68III
RRP:
$ 870.00
Our price:
$ 830.00
ready for shipping in 3-5
weeks
William Optics
Flattener Flat73A for ZenithStar 73
$ 335.00
ready for shipping in 24
h
William Optics
Flat6A III Special Edition FLT91
$ 590.00
ready for shipping in 3-5
weeks
William Optics
Adjustable Flattener Reducer Flat7A
$ 860.00
ready for shipping in 3-5
weeks
William Optics
Full-Frame Flattener/Reducer 0.72x
$ 970.00
ready for shipping in 3-5
weeks
William Optics
Ultra Flat 91
$ 820.00
ready for shipping in 3-5
weeks