Instruction Manual

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tighten the thumbscrew to secure it. Adjust the helical focuser by
holding between the thumb and fore fi nger and rotating in either
direction.
Tuning SolarMax II 90 with RichView Tuning System - Because
different features on the Sun are moving toward or away from
the Earth, their light is Doppler shifted off the hydrogen-alpha line
of 6562.8 Angstroms, you will need to adjust the tuning slightly
to get the best high-contrast views of the features you want to
observe. After the SolarMax II telescope is pointed at the Sun and
the image has been focused, move the RichView tuning lever up
or down slowly while looking at the image in the eyepiece to get
the most detail and contrast. Surface details will generally require
one setting, while prominences will require a different setting for
maximum detail.
Tuning SolarMax II Double Stack 90 with RichView Tuning
System - With a double stack system, follow this procedure for
best results: After the SolarMax II telescope is pointed at the Sun
and the image has been focused, move the RichView tuning lever
on the telescope up or down slowly while looking at the image in
the eyepiece to get the most detail and contrast. Now adjust the tilt
of the external Etalon on the front of the telescope with the TMax
thumb wheel to achieve the brightest image while eliminating any
refl ections. Finally, adjust the RichView tuning ring on the external
Etalon to get the most detail and contrast for the feature you are
viewing. Because double stacked systems operate at a very
narrow band pass of only 0.5 Angstroms or less, more tuning is
needed for different areas and features on the Sun.
Double Stacking - This greatly increases contrast by narrowing
the bandpass to <0.5Å and gives a spectacular 3D effect showing
increased surface detail. The SolarMax II 90 telescope can be
double stacked by adding an additional SolarMax II Etalon with
TMax (Product #SME90). Contact your Coronado dealer or Meade
Instruments directly for pricing.
Blocking Filters - The SolarMax II 90 telescope is available with
a BF15 or BF30. The BF15 version is pictured below. The BF30
version will appear to be the same. However the BF30 will be
mounted inside the telescope and the diagonal supplied will be
without any blocking fi lter. The SolarMax II 90 telescope with an
internal BF30 can be used without the diagonal to mount imaging
equipment in a straight through confi guration but drawtube #1 will
still be 1.25”. If you have the BF15 version you MUST use the
diagonal. You cannot substitute another diagonal for the Coronado
Blocking Filter Diagonal. This would create an unfi ltered system
and deliver light from the Sun that will cause damage to the eye.
Contact Coronado if you are unsure which version you have.
SolarMax II 90 Telescope
Aperture - 90mm
Focal Length - 800mm
f/Ratio - f/8.8
Bandwidth (Singel Stacked) - <0.7 Å
Bandwidth (Double Stacked)- <0.5 Å
Thermal Stability - 0.005 Å/°C
Blocking - Full blocking >10
-5
from EUV to far IR
SolarMax II 90
Double Stack
RichView™ tuning lever
for internal Etalon
SolarMax 90
Draw tube #1.
Draw
tube #2.
RichView™ tuning ring
Tmax™ tilt wheel
External Etalon unit