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) on your William Optics refractor with our Asiair Mount
this cable organiser will accomodate a range of cables of varying thickness and is built to last
Instructions
aiding the mount in providing precise tracking
Also effective on smaller economy telescopes that cannot benefit from expensive narrow-band nebula filters due to the huge light loss involved
Explore Scientific Field Flattener f/5 to f/7 CEM ) on your William OpticsThe explore scientific field flattener provides correction to Explore Scientific refractors F 5 to F 7 for a flat field and sharp, pinpoint stars in your images. On the telescope side, the flattener is a push fit 2" that is threaded to accept all standard 2" filters, such as light pollution narrowband filters. This fully multi coated flattener has a clear aperture of 38mm. The image circle at the standard 55mm backfocus distance is 42mm, ensuring full
