About this product
Part Number: 0551268
The Lunt 60mm Ha OTA + DS-60 + B1200 BF + Feather T + P Tuner is a complete H-alpha Solar Telescope with 60mm aperture and a additional 60mm Double-Stacked Etalon system. The telescope can be used with <0.7 Angstrom bandwidth or with <0.5 Angstrom bandwidth. With B1200 Blocking Filter for smaller vignetting at imaging, superb quality Starlight Instruments Feather Touch focuser, and new air-pressure tuning system!
This telescope will be delivered with two matched Etalons, a internal one and a external. The internal etalon with new air-pressure tuning system adjustment allows for a <0.7 Angstrom bandwidth. This "Pressure Tuner" system allows a better Etalon adjustment than other systems. The “Pressure Tuner” system adapted the Etalon to varying altitudes and atmospheric pressures for always optimal performance. The LS60THaDS60 could be used only with the internal H-alpha filter at <0.7 Angstrom and a aperture of 60mm, or together with the front mounted external H-alpha filter at <0.5 Angstrom bandwidth and 60mm aperture.
The best views of the Sun are undoubtedly seen through a dual etalon system. The reduction in bandpass from an estimated 0.7 Angstrom to 0.5 Angstrom just seem to bring the Sun's surface to life. 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 (matched) and both need to be adjustable (Tuning) 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. Both etalons in this system will be matched at the factory in order to provide a system that is both optimized for performance and the elimination of ghosting.
The focal length of the telescope is 500mm. The star diagonal in which the blocking filter is installed, is equipped as standard for 1.25" eyepieces and with a T2 camera connection. The B1200 Blocking Filter provides a smaller vignetting for imaging. Fine focus adjustment is achieved with a Starlight Instruments 2" Feather Touch focuser with 10:1 reduction.
Supplied with an Aluminum finished hard case with fitted foam.
Telescope Field of View Simulator
What's in the box
- LS60T Hydrogen-alpha Solar Telescope
- Internal Etalon with Pressure Tuner system
- External 60mm Double-Stack Etalon LS60FHa
- B1200 Blocking Filter in star-diagonal
- Starlight Instruments 2" Dual Speed Feather Touch focuser
- Tube Ring 1/4"-20 connection for mounting on photo-tripods
- Transport Case with die cut foam with room for accessories
|Bandwidth||Internal Etalon with <0.75 Angstrom|
|Tuning||Air Pressure Tuning System|
|Blocking Filter||B1200 with 1.25" and T2 connection|
|Focuser||Crayford style with 10:1 fine tuning or Starlight Instruments 2" Feather Touch focuser with 1.5" travel and 10:1 reduction|
|Storage||Aluminum finished hard case with fitted foam|
Downloads / Manuals
The following manuals and downloads are available for this product:
Lunt LS60THaCPT/B1200 H-alpha Telescope Manual (PDF)
|Average Rating (1 Review): |Double stacked 60mm lunt heaven
Friday, 27 April 2018 | Alan
On the face of it, the 60mm double stacked LS60 is very expensive but one should not underestimate the difference in the solar view presented via a double stack system. Its "apples to oranges" and you will never go back. If you plan to use binoviewer or camera then seriously consider adding a Moonlight or Feathertouch focuser to your order, the standard focuser is not very strong.
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