Takahashi FSQ-85EDX Flattener
| Article number: | TKA37582 |
| Availability: | More on the Way to us |
| Delivery time: | More on the Way to us |
Takahashi has released a new flattener for use with the FSQ-85EDX telescope that provides a
flat field like that of the FSQ-106EDX4 for full frame DSLR and CCD cameras. This flattener is
available for pre-order, with expected delivery in late November 2017.
When originally conceived, the FSQ-85EDX was meant for use with APS-C or smaller CCD or
CMOS chips. At an image circle radius beyond about 14 mm, field curvature could become
evident in larger chips. This new flattener will greatly reduce this field curvature, resulting in a
practically flat field out to a 22mm image circle radius. The two spot diagrams
demonstrate the impact of the flattener on field curvature:
Spot Diagram of FSQ-85EDX Without Flattener
Spot Diagram of FSQ-85EDX with Flattener
Description: Flattener 1.01X for FSQ-85EDX
SKU: TKA37582
Effective Focal Length: 455 mm (f/5.4)
Image Circle Diameter: 44 mm
Metal Back: 56 mm
Weight: 200 g