TS Optics Photoline 3" 1.0x Apo Flattener and Field Corrector
Teleskop-Service has reworked and improved the legendary 3" flattener. The result is an outstanding field corrector for astrophotography with large sensors, like full-frame size cameras. The typical field aberrations of refractors, like astigmatism and field curvature, are optimally corrected here. Distance recommendations
The corrector is optimized for refractors of at least 700 mm focal length, but it can also be used with refractors of shorter focal length. The refractor has to offer a backfocus of at least 150 mm from the connection thread.
From the M80x1 connection thread, you have the following generous working distances:
Refractors of at least 700 mm focal length: 116 mm
Refractors from 480 mm to 690 mm focal length: 121 mm
There are adapters to all popular threads, like M68x1 Zeiss style, M48x0.75 or SC. Thus you can configure your own individual adaption and adapt accessories like off-axis guiders and filter wheels.
Adaption to your telescope
The corrector requires at least a 2.5" focuser. At the telescope side, a male M92x1 thread is at your disposal. The flattener directly fits to the large TS 3.7" RPA focuser TSFOC37.
Excellent field correction and illumination up to 60 mm diameter