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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.
The excellent Starlight Instruments FTF301B-A 3 inch dual speed focuser (pictured below) is available as an add on to enable a strong focusing platform for a wide range of cameras.
We recommend that ODK16 are observatory mounted, ideally on a Paramount or similar mount.
*The weights shown on each model refer to the standard optical tube with no additional equipment added.
Specification |
ODK16 |
Primary mirror diameter |
400mm |
Focal length |
2720mm |
Focal Ratio |
f6.8 |
Tube Weight (inc. |
36kg |
Tube Diameter |
450mm |
Tube Length |
820mm |
BFD (Back Focal |
216mm |
Tube Material |
Carbon fibre sandwich |
Secondary Size |
152mm |
Mirror Cell |
Honeycombe CNC |
Focuser |
3" Add on Option |
Corrector Design |
Multi coated 3 lens |
Flat Field Size |
>52mm |
Spot Size on Axis |
2.4 microns |
Spot Size at Field Edge |
6.0 microns |
Mirror / Tube Cooling |
3 Controllable fans. Heaters optional |
Attachment Method |
CNC machined alum. dovetail with supports |
Optional Dew Shield available - this is a matching, lightweight carbon fibre addition to help curb the onset of condensation in damp prone atmospheric climes. It is fitted or removed literally in less than a minute and greatly reduces the heavy dew precipitation which can so easily ruin what could be a classic imaging session.
ODK16 CHARTS (click title to view) |
Model Range
Optics
Compare Specs.
Note: All USA ODK 'scopes are supplied with adapters to connect to Starlight Instruments FTF3015B-A 3 inch focuser. Focusers are not supplied with the telescope but are available as an 'add on'. Images used are for aesthetic appearance only.