Lunt Solar Systems - 200mm H-alpha Solar-Telescope with Double Stack Etalon filter and B1800 BF for visual and webcam

The LS200THaDS is a complete Solar Telescope. The Newtonian based system is a telescope with rings and has a aperture of 200 mm.
The focal ratio is F/6 with a collimation set . The focal length is 1200mm providing a ~11.8 mm image through a 18 mm blocking
filter as a standard , optimized for visual observing and webcam imaging. For 35 mm Camera imaging we recommend to order the
Telescope with the B3200 Blocking filter for better illumination due larger necessary backfocus. 

The Double-Stack System...
The best views of the Sun are undoubtedly seen through 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 tunable 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.

Although the LS200T utilizes a 200mm F6 mirror the collimation set have been optimized to assure elimination of aberrations at
the desired wavelengths.

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 collimation 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 friction 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.

Delivered with order:
• optical tube with tube ring

Aperture: 	200mm, High-Quality Mirror
Focal Length: 	1200mm Effective
Band Pass: 	<0,55 Angstrom RMS
Focuser: 	Precision Friction Style with 10:1 included, Starlight Instrument
Color: 	Pearl White Body with Black Anodize