ODK20

The ODK Series

ODK20

From: £22,000.00 excl. VAT

Because of many, many possible clients asking us for a larger model in the ODK range we are now in the process of offering a 500mm model with a carbon truss type tube.

We made two similar models to the one we have now in production and these were supplied to the ESO and ENO observatories.

Brief specification of the ODK20 is shown it the table top right, it is indeed a marvellous instrument and is based around a design which has supplied data to assist in the control of these two enormous main instruments iat the Canary Islands and Paranal observatories.

As a minimum we recommend a Paramount ME to compliment the ‘scope or mount with similar carrying capacity.

We expect to customise several aspects of every model to your own specifications. We do not wish to impose a fixed design if a few modifications could suit your needs better. Prices quoted are for standard specification as above.

SKU: ODK20 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