UNIVERSAL 2" FLATENER

ARTESKY 2" Universal Field Flattener for Refractors from f/5 to f/8 - Perfectly Flat Field up to APS-C Sensors

The 2" corrector flattens the image field of the refractor and enables astrophotography with very high sharpness in the field.
Suitable for all refractors such as ED, APO with 2" focusers
For perfect astronomical photography with DSLR and CCD cameras
The focal length of the telescope is not affected
Full correction and illumination with field diameter up to 40 mm
Generous working distance between 108mm and 128mm (depending on the focal length of the telescope) - easily combinable with off-axis guiders

Advantages of ARTFLAT2

Excellent flatness and significant reduction of field aberrations such as coma and astigmatism.
Better illumination through optimized lenses and M48 connection: usable diameter 40 mm
Generous working distance between 108mm and 128mm, depending on the focal length of the telescope - common accessories such as filter wheels easily fit

Which refractors can I use with the ARTFLAT2?

In general, all refractors with a 2" focuser can be used.

Connection distance of a room to the ARTFLAT2

The correct working distance of the M48 thread on the camera sensor

To determine the correct working distance, the focal length of the refractor is important. In general, the shorter the focal length, the longer the working distance.
Focal length <450mm: 128mm
Focal length 450-490mm: 123mm
Focal length 500-550mm: 118mm
Focal length 560-590mm: 116mm
Focal length 600-690mm: 113mm
Focal length 700-800mm: 111mm
Focal length from 800mm: 108mm