Will the Baader MPCC Mark III change my telescope's focal length?
No. The MPCC Mark III is a "zero-power" corrector, meaning it does not alter the native focal length or focal ratio of your telescope. An f/4 Newtonian will remain an f/4 Newtonian, preserving its original field of view and image scale.
What is the fastest telescope I can use with the MPCC Mark III?
The MPCC Mark III is designed to provide excellent coma correction on Newtonian telescopes as fast as f/3.5. It also works exceptionally well on slower systems up to f/6.
How do I connect the MPCC Mark III to my DSLR for imaging the North American Nebula (NGC 7000)?
Use a standard T-ring for your camera brand (for example Canon or Nikon) on the MPCC Mark III's T-2 thread; it is designed for 55 mm from the end of the T-2 thread to the sensor. To use the M48 thread (44 mm clear aperture, enough for full frame), remove the T-2 adapter and restore the 55 mm distance with spacers; for Canon DSLRs Baader offers the Protective T-ring for Canon EOS with the optional M48 spacer ring #2458405.
Can I use the Baader MPCC Mark III for visual observing with my 10" f/4.7 Dobsonian?
Yes. The visual and photographic set (#2458403) adds a Varilock 29 T-2 extension and a 1.25in eyepiece clamp with helical focusing; a 2in eyepiece holder can use the M48 thread. It will provide wide, sharp fields of view, making it excellent for observing large star clusters like the Hercules Cluster (M13) without distracting coma at the edges.
What makes the Phantom Group coatings on the MPCC Mark III special?
Baader's Phantom Group™ coatings are Baader's wideband multicoating, applied to all air-to-glass lens surfaces, that provides extremely high light transmission across a very wide spectral range from UV to NIR. This minimizes light loss and reflections, resulting in higher contrast and brighter images compared to standard coatings.
Do I need special adapters to use the MPCC Mark III?
The base MPCC Mark III unit fits any standard 2" focuser. For photographic use, you will need a T-ring for your specific camera (T-2 thread), or the Baader Protective T-ring for Canon EOS to use the M48 thread. For visual use, you will need an eyepiece holder that threads onto the M48 port. The corrector is sold in different configurations to provide the necessary adapters for your intended application.
