About the Lunt 152mm H-Alpha Solar Telescope - Pressure Tuner...
The Lunt 152mm H-Alpha Solar Telescope is perfect for the ambitious solar observer! If it's a perfect image you'''re after, the LS152THa Lunt Solar Telescope provides a very large and high resolution image size. The 100% unobstructed system will perform to the highest level at both low and high magnifications. Utilizing both advanced hi-contrast coatings, and the new Doppler True Pressure Tuning system, the user will be able to experience crisp, sharp, high magnification visual images, as well as utilize this Lunt Solar Telescope system for high end digital processes.
An internal etalon with new air-pressure tuning adjustment incorporated into the Lunt 152mm H-Alpha Solar Telescope allows for a Lunt Solar Telescope Pressure Tuner system adapted the Etalon to varying altitudes and atmospheric pressures for always optimal performance.
The Lunt 152mm H-Alpha Solar Telescope includes a star diagonal in which the Lunt Solar Blocking Filters is installed, is equipped as standard for 1.25" Lunt Solar Eyepieces and with a T2 camera connection. Focusing is achieved with a high precision Starlight Instruments 2" Feather Touch focuser with 10:1 reduction as standard Lunt Solar Telescope equipment.
The Lunt 152mm H-Alpha Solar Telescope is a 6" refractor for solar observing: 152 mm aperture, 900 mm focal length, 100% unobstructed, and a bandwidth of Lunt Solar Telescope for professionals! If it is the perfect solar image you are after, than the LS152THa is the right system for you. It provides a large image size and high resolution. The Lunt Solar Telescope system will perform to the highest level at any magnifications. Utilizing advanced hi-contrast coatings and the new air-pressure tuning system "Pressure Tuner", the user will be able to experience crisp, sharp, high-magnification visual and digital images.
Certainly these high end Lunt Solar Telescopes like the Lunt 152mm H-Alpha Solar Telescope are equipped with high end accessories. The alternatively with B1200, B1800 or B3400 Lunt Solar Blocking Filter equipped telescopes will be delivered with tube rings, dovetail plate, zoom Lunt Solar Eyepiece 7.2 to 21.5 mm, transport case and Starlight Instruments Feather-Touch focuser.
What is the "Pressure Tuner" system built into the Lunt 152mm H-Alpha Solar Telescope? The air pressure of the atmosphere varies, depending on if you are at sea level or on a mountain. Unfortunately also the sensitive Etalon filter systems respond to these air pressure variations. The wavelength range that is allowed through the filters, shifts as a function of the air pressure. This shifting is indeed minimal, but at bandwidths of less than one Angstrom it is already clearly visible. If the filter is not adjusted precisely to the H-alpha wavelength, the image of the sun through the telescope degrades, prominences and surface details are no longer visible. Therefore, the Lunt Solar Telescope Etalon filter systems have to be adjusted to the prevailing air pressure at the observation location. This Tuning called adjustment is typically done by a mechanical tilting of the filter. At sizes of a few Angstrom, it is obviously not easy to achieve the exact adjustment by mechanical tilting. And because the Lunt Solar Telescope filter is no longer perfectly straight in the beam path, but slightly oblique, there may also be optical failures.
The new air-pressure system "Pressure Tuner" by Lunt Solar Systems takes a different path. The Etalon filter, part of the Lunt 152mm H-Alpha Solar Telescope, will not be tilted to only simulate a balance to the air pressure, but the air pressure in the filter system is in fact adapted by 100 percent to the real external air pressure. Thereafter the air surrounding the Lunt Solar Telescope Etalon can simply be compressed or decompressed by the tuning system in order to change the air pressure between the surfaces. This allows the Etalon surfaces to always remain at the same perfect angle to the light waves but changes the diffractive index of the air in the chamber and thus accomplishes the same tuning expect that it goes around + or - 0.4 Angstrom on either side of the centerline. Therefore, the patent-pending "Pressure Tuner" system from Lunt Solar Telescope is also called "True Doppler Tuning", and it achieves much better results than conventional tuning systems.
Lunt 152mm H-Alpha Solar Telescope - Pressure Tuner Features...
- Advanced Narrow Band Hydrogen-alpha Dedicated System.
- A refractor based system with a 152mm front objective.
- An unobsructed internal HD Etalon with the new Pressure Tuner allows for
- The system includes the mounting rings and dovetail and dust caps
- H-alpha Telescope with internal Etalon and 152mm Aperture
- Pressure Tuner system
- Starlight Instruments 2" Feather Touch focuser
- Tube Rings with dovetail
- LUNT Zoom-Eyepiece
- Transport case
Lunt 152mm H-Alpha Solar Telescope - Pressure Tuner Specifications...
Optics Type: Dedicated H-Alpha Solar Telescope
Type: Single Interference HD Etalon
Tuning: air-pressure tuning system
Aperture: 152 mm
Focal Length: 900 mm
Focal Ratio: F6
Focuser: Starlight Instrument Feather Touch
Color: Pearl White with Black and Red accents
Weight: 14 kg