ODK16

The ODK Series

ODK16

From: £7,450.00 excl. VAT

The ODK16 is in use world wide by amateurs and professionals alike.

Viewing the spot diagrams and other graphic information below will show you just how good the ODK16 presents it’s outstanding specification. As wil all the ODK models we don’t skimp by using just 2 lens elements in the corrector system, we could, but we know from extensive computer designs that there is a real need for 3 elements to give a wider, flatter field. It costs quite a bit more to have this extra lens but, if you compare like with like spot diagrams of an ODK with a similar model on the market, the difference is noticeable and, it’s there for every image you take or visual observation you make, you have the best optical performance available in an Optimised Dall Kirkham, anywhere.

We recommend that ODK16 are observatory mounted, ideally on a Paramount but, other mounts are available and we will be pleased to quote you for these if we do not offer them here on our web site.

SKU: ODK16 Categories: ,

SPECIFICATIONS

ODK10 ODK12 ODK14 ODK16
Primary mirror diameter 250mm 300mm 350mm 400mm
Focal Length 1700mm 2040mm 2380mm 2720mm
Focal Ratio f/6.8 f/6.8 f/6.8 f/6.8
Tube Weight approx. 12kg approx. 19kg approx. 26kg approx. 36kg
Tube Diameter 300mm 350mm 400mm 450mm
Tube Length 475mm 615mm 700mm 820mm
Tube Material Carbon fibre sandwich Carbon fibre sandwich Carbon fibre sandwich Carbon fibre sandwich
Secondary Size 96mm 120mm 136mm 152mm
Mirror Cell Honeycombe CNC machined alum. cell Honeycombe CNC machined alum. cell Honeycombe CNC machined alum. cell Honeycombe CNC machined alum. cell
Focuser 3″ Crayford with 10:1 reduction 3″ Crayford with 10:1 reduction 3″ Crayford with 10:1 reduction 3″ Crayford with 10:1 reduction
Corrector Design Multi coated 3 lens Multi coated 3 lens Multi coated 3 lens Multi coated 3 lens
Flat Field Size 50mm > 52mm > 52mm >52mm
Spot Size on Axis 3.5μm 1.8μm 2.1μm 2.4μm
Spot Size at Field Edge 6.2μm 5.6μm 5.6μm 6.0μm
Mirror / Tube Cooling 3 Controllable fans. Heaters optional 3 Controllable fans. Heaters optional 3 Controllable fans. Heaters optional 3 Controllable fans. Heaters optional
Attachment Method CNC machined alum. dovetail with supports CNC machined alum. dovetail with supports CNC machined alum. dovetail with supports CNC machined alum. dovetail with supports