Double stack: Every SolarMax telescope also comes with double stack. This means that two etalon filters
are fitted one behind the other. This reduces the half width of the
light which passes through the H-alpha line to less than 0.5 Angstroms.
Without double stack, the half width is less than 0.7 Angstroms. The
half width is provided in the product name and in the telescope's
technical information.
The smaller half width results in higher
contrast. The Suns structures appear three-dimensional. The image is
also darker and needs to be finely readjusted using the tuning system
due to the filters smaller half width.
BF blocking filter :
The deflection optics with the eyepiece receiver also accommodate the
blocking filter. This filter reduces the brightness of the solar image
and is therefore a very important part of the solar telescope, and which
must under no circumstances be removed! For purely visual observing, a
small blocking filter is sufficient, but for photography a larger one
should be selected.
Sol Ranger : Pointing a telescope at the
sun is more difficult than you may think and can often involve
involuntary glimpses of the sun with unprotected eyes! The Sol Ranger
finder scope is a special solar finder that uses a ground glass screen.
This allows you to point your telescope at the sun easily, safely and
quickly.
Delivery includes a Cemax eyepiece . The eyepieces
of this series are specially optimized for observation in H-alpha. The
optimization applies to the remuneration. The eyepieces have no
'filtering effect' and can therefore also be used at night.
VIDEO
Scope of Delivery:
Telescope SolarMax II 90 DS / BF15 Mounting ring (but no dovetail bar) Eyepiece Cemax 25 mm, 18 mm, 12 mm Barlow Lens 2x Sol Ranger solar finder Carry case
Products specifications
Type of telescope
H-Alpha Solar Telescope with integrated Etalon
Viewfinder
Solar Finder
Band Pass
Combined 0.5Ä
Blocking Filter
d=15mm (Diagonal)
Connection to eyepiece
2"/1.25"
Aperture
90mm
Focal length
800mm
Focal ratio
f8.9
Weight
10,4 Kg