Baader 2" Newtonian Coma Corrector MPCC Mark III - from f/3.5 to f/7

Baader MPCC Mark III - Multi Purpose Newton Coma Correktor

The Multi Purpose Coma Corrector Mark III eliminates coma across the full photographic field without manipulating the focal length. The proprietory lens design has our Phantom Group™ wideband multicoating on all air to glass surfaces. This treatment delivers highest transmission combined with lowest amount of scatter and reflections across a very wide spectral range from UV to NIR.

The new Mark III has been designed for newtonian telescopes from f3.5 to f7. Stars remain pinpoints across the field and the visual use likewise is made much easier - with the help of the 2" (M48) male filter thread at the eyepiece facing side.

The Baader MPCC Mark III offers many advantages:

♦ suitable for Newtonian telescopes from f/3.5 through f/6
♦ new designed bigger lenses for less vignetting even with bigger sensors
♦ high definition across the whole field
♦ camera side connecton threads: T2 (M42x0.75) and M48x0.75
♦ 2" stop ring is removable - the corrector can be placed inside a 2" focuser
♦ Phantom Group coatings for maximum transmission and minimal reflections
♦ 44 mm free aperture (if M48 thread is used)

♦ Baader Newtonian corrector
♦ M48 protection ring
♦ T2 connection ring

Question:
How do you have to measure the working distance

Answer from Teleskop-Service:
The working distance is measured from the beginning of the connection thread on the housing of the corrector (see example picture):