TS 2.5" Flattener for APO Refractors

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About this product

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.

Advantages:

• 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.

Features

• 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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