This is a reducer designed specifically for flat field telescopes like the CDK. This reduces the f ratio of the CDK telescope 66%. The f/6.8 CDK20 telescopes will be reduced to about f/4.5.
**NOTE - 200166 adapter is also compatible with CDK17 that have 8.81" back focus. CDK17 with 10.24" back focus will use the 125166 focal reducer. See instruction manual for details.
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
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