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The ODK12 and all the range is based on a focal ratio of f6.8, fast enough for some superb deep sky photo-visual use and, still have enough focal length for high resolution planetary work both visual and CCD applications.
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.
The tube is constructed from Carbon Fibre sandwich design. Very, very strong to avoid flexing and, zero expansion to ensure the focal plane does not change over long photographic exposures. Being an open tube design and very short, cool down times are remarkably fast.
Images from the ODK12 are spectacular, visit our image gallery and view some of them here.
Visually it offers you views of the planets which you will find incredible. The high resolution of the instrument across the whole of it’s field ensures planets at the centre or stars, right to the edge, are incredibly sharp and crisp. A result of the computer enhanced design followed by skilful hand finishing by skilled opticians.
*The weights shown on each model refer to the standard optical tube with no additional equipment added.
Specification |
ODK12 |
Primary mirror diameter |
300mm |
Focal length |
2040mm |
Focal Ratio |
f6.8 |
Tube Weight (inc. |
19kg |
Tube Diameter |
350mm |
Tube Length |
615mm |
BFD (Back Focal |
218mm |
Tube Material |
Carbon fibre sandwich |
Secondary Size |
120mm |
Mirror Cell |
Honeycombe CNC |
Focuser |
3" Add on Option |
Corrector Design |
Multi coated 3 lens |
Flat Field Size |
>52mm |
Spot Size on Axis |
1.8 microns |
Spot Size at Field Edge |
5.6 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.
ODK12 CHARTS (click title to view) |
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.