A 200mm aperture Newtonian Reflector Telescope with a patent pending etalon assembly.
Now you can put >24,000 square millimeters of solar power to work!
That's almost 4X a 100mm System!
Specifications:
• Aperture: 200mm High Quality Mirror
• Focal Length: 1600mm Effective
• Band Pass: <0.55 Angstroms RMS
• Focuser: Precision Crayford style with 10:1 included
• Color: Pearl White Body with Black Anodize Accents
The Double Pass System...
The best views of the Sun are undoubtedly seen thru a dual etalon system. The reduction
in bandpass from an estimated 0.8 Angstroms to 0.5 Angstroms just seem to bring the
Sun's surface to life. Larger apertures on a good seeing day usually result in a WOW!
from those who are lucky enough. Adding a second etalon to an existing etalon is not
quite as simple as it may seem. Both etalons need to be brought on line (tuned) and
both need to be tiltable such that all ghosts are eliminated. Ideally the transmission
curves should overlap perfectly when on band to provide for the best possible
resolution and contrast. Lunt Solar has engineered a system that takes into account
all these issues. The light from the primary mirror is passed thru the same etalon
twice. Given that the etalon is tuned on band for the first pass it is, by default,
on band for the second pass and is a perfect match to itself. The loss of transmission
due to the beamsplitting or doublestacking is more than made up for with the increase
in aperture.
Although the LS200T utilizes a 200mm F6 mirror the collimating set have been optimized to both
increase the effective focal length to F8 allowing for a minimized central obstruction at the
secondary and to assure elimination of abberations at the desired wavelengths.
In addition to the Patent Pending optical design Lunt Solar has taken additional steps
to ensure that this will be a scope on everyone's wish list this year.
• An infra red reflecting window (ERF) is provided early in the optical path to remove
unwanted heat from the system.
• An optically optimized collimating system ensures true collimation, coma correction,
and off axis (sweet spot) reduction.
• Our newly designed Induced Transmission Filter (previous post) will ensure long
term safety and performance.
• Focus is achieved with a high precision Crayford style focuser with a 10:1 reduction
included.
The system has an estimated bandpass of <0.55 Angstroms and is capable to providing
ultra high resolution and high contrast views of both surface and edge detail under
good to excellent seeing conditions.
Now that Solar Minimum is finally behind us, we can look forward to a new and exciting
Sun with our new and exciting products.
The LS200 will soon be available with the CaK secondary option.
This option will have a second focus system 180 degrees from the Ha. This system will house CaK
filter optics. This allows for simultaneous viewing of the Sun in both Ha and CaK thru the same
telescope.
There is currently no fixed price for this option (estimated at around US$1k). However, if you you
are interested in the CaK option let the dealer know at time of order. We will update and forward
more information on this system as it becomes available.
Introductory MSRP: US$4,995.00* *The current MSRP is for pre-orders only. The price is subject to change once this system
is in full production. Orders will be shipped in the order they are received.
The heart of the double pass system