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The SolarMax III (SMIII) is a 70mm F/5.7 refractor equipped with 60mm
external hydrogen – alpha (H-a) filters. Available in both
single-stacked (<0.7Å) and double-stacked (<0.5Å) bandpasses and
either 10mm or 15mm blocking filters. What makes the SMIII standout?
The SMIII 70mm has a new two-speed rack & pinion focuser which
creates a more user-friendly interaction with the telescope. The
two-speed, 2” focuser has both coarse and fine focus controls allowing
the user to get a more precise focus, critical for both solar imaging
and visual observing.
Additionally, the SMIII 70mm includes only external “True” H-a etalon
filters giving higher contrast views and sharper features compared with
models using smaller internal H-a etalon designs. Experience darker
backgrounds, sharper features, and higher contrast with the new SolarMax
III series telescope.
The SMIII 70mm also includes Coronado’s patented RichView™ tuning
allowing direct tuning of the primary etalon filter. The patented
RichView™ tuning technology provides additional tuning range and an
overall better way of adjusting the filters bandpass. No other
commercially available H-a telescope can provide the tuning range and
accuracy of the new SolarMax III telescope. Now you can tune for the
highest contrast views of your favorite solar features without
sacrificing image quality.
Double Stacked models ((<0.5Å bandpass) include two “True”
external etalon filters. One etalon filter equipped with our patented
RichView tuner and second etalon with tip-tilt tuning using Coronado’s
T-Max tuner. Whether you are focusing on the solar edge or surface
features in the chromosphere, the SolarMax III 70mm is the solar scope
for you. Since both etalon filters are now external to the telescope,
you can easily remove both filters and rear blocking filter diagonal to
use the scope as a normal refractor for night time astronomy. It’s like
having two scopes in one!”