Paired Sharpening Masks
great aspect of double star, and lunar and planetary observing is
the availability from suburban skies. Enjoy fun targets any good night
without seeking darker skies.
your Newtonian/Dobsonian's performance to produce sharp refractor-like
views is completely within reach! Our custom masks achieve a clear
aperture, eliminating diffraction spikes from your telescope's spider,
curing for possible image softening turned down edge (TDE),
and preventing distortion from intruding mirror retaining clips.
We will custom cut a mask that hides the the mirror retaining clips,
and create a custom sized aperture mask, providing a clear, perfectly
round uninterrupted aperture. This will give crisp clean views and
fine details on the Moon and planets, and round spike free image for
splitting tight double stars.
Mirror masks are laser cut 1/8" thick black acrylic, stiff, light
weight with a non-reflective matte side. 1/4" holes 120
degrees apart show your mirror edge to allow precise centering. Attach
to mirror clip tops with Velcro dots or similar using small notches
masks are laser cut from the same acrylic as the mirror masks. Dimensioned
to fit to your outer tube diameter, center hole cut if you have a
protruding spider stalk. Maximum (100%) mask aperture opening computed
based on your secondary size and spider vanes. Two other openings
are standard, 75% and 50% of the 100% size.