About this product
Part Number: TSFlat2.5
The TS FLAT2.5 is a full format Field Flattener designed for APO/ED Refractors and provides excellent correction and illumination up to a 55mm diameter imaging circle.
- Very good illumination, can be used with large sensors up to 55mm diagonal
- Generous back focus distance of between 87mm to 106mm
- Suitable for all refractors, the requirement is a focuser with minimum 2.5 "diameter drawtube.
- Excellent illumination and correction of image fields up to 55mm diameter
- Suitable for all refractors. Minimum requirement 2.5" or larger focuser
- Telescope side M68x1 thread. Can be adapted to other threads
- Camera side M69x1 female thread
- Back focus distance of 87mm to 106mm - depends on the telescope being used
- Matt black internal surfaces with anti reflective threads
- Weight: 300g
Recommended Back Focus Distances
- Focal length <500mm: 106mm
- Focal Length 510-600mm: 101mm
- Focal Length 610-700mm: 96mm
- Focal Length 710-800mm: 91mm
- Focal Length 810-950mm: 88mm
- Focal Length >1000mm: 87mm
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