![William-Optics](/Marken/normal/William-Optics.jpg)
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 Focusing Mask Bahtinov 105-148mm](/Produktbilder/normal/62747_1/William-Optics-Focusing-Mask-Bahtinov-105-148mm.jpg)
William Optics
Focusing Mask Bahtinov 105-148mm
$ 88.00
ready for shipping in 24
h
![William Optics Focusing Mask Bahtinov 75-110mm](/Produktbilder/normal/62745_1/William-Optics-Focusing-Mask-Bahtinov-75-110mm.jpg)
William Optics
Focusing Mask Bahtinov 75-110mm
$ 77.00
ready for shipping in 24
h
![William Optics Focusing Mask Bahtinov 243-308mm](/Produktbilder/normal/62746_1/William-Optics-Focusing-Mask-Bahtinov-243-308mm.jpg)
William Optics
Focusing Mask Bahtinov 243-308mm
$ 177.00
ready for shipping in 24
h
![William Optics Focusing Mask Bahtinov 172-235mm](/Produktbilder/normal/62748_1/William-Optics-Focusing-Mask-Bahtinov-172-235mm.jpg)
William Optics
Focusing Mask Bahtinov 172-235mm
$ 199.00
ready for shipping in 24
h