Lunt LS35 Tha Solar Telescope

The LS35THa dedicated Hydrogen-alpha telescope is the most compact 35mm etalon system currently available.

An unobstructed, front mounted, 35mm etalon provides a bandpass of <0.75 Angstroms. Prominences and some surface detail can quickly be viewed thru this very portable single stack system. Add it to an existing system or use as a quick grab and go….

Because the LS35THa is small and compact it is ideally suited to being stacked side by side for Binocular viewing. The biggest OD of the LS35Tha is 61,5mm (dew shield).

£419.00 inc. VAT and delivery

Technical specs:

Aperture: 35mm Unobstructed Front Mounted Etalon
• Band Pass: <0.75 Angstroms
• Focal Length: 207mm
• Blocking Filter: 4mm; Full Disk Image up to 400mm Focal
• 1.25" helical focuser , all normal 1.25" eyepieces can be used

Basic Package (LS35THa) Includes:

• LS35THa Telescope Assembly
• Mounting Rings with Standard Base

Lunt 2" Solar Wedge

2" Lunt White Light Solar Wedge for the ultimate in white light solar performance.

2" barrel for professional Solar-Photography and White Light Solar Observation. Includes the full 2" Polarizing Filter Set and ND 3.0 Filter for photo use.

Includes:
• 2" Lunt White Light Solar Wedge
• 2" ND3 Pre-installed Filter
• Metal Carrying Case
• Die Cut Foam with room for Accessories
• 2" Polarizing Filter Set

Recommended Accessories:

• 2" Polarizing Filter Set (US$149)

£329.00 inc. VAT and delivery

Technical specs:

Lunt LS60 Tha Solar Telescope

The LS60/Ha is a complete Solar Telescope. The refractor based system has a precision aligned singlet chromatical lens with a 60mm aperture. The front singlet lens reduce half the straylight of an achromat , fully eleminate the possibility for on axis coma, astigmatism, decentering aberrations and provides with the matched collimation lens set a full spherical corrected flat-field Solar-Telescope. The focal length is 500mm providing a ~4.5 mm image thru a 6mm blocking filter. Fine adjustment is achieved with a Crayford style focuser or feather touch focuser with 10:1 reduction standard. An internal etalon with tune adjustment allows for a <0.8 Angstrom bandpass.

**Delivery is typically 3 to 4 weeks**

**Please enquire for Double Stack prices and delivery times**

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Technical specs:

Lunt Calcium CaK Solar Telescope

Calcium K (Ca-K) Telescopes and Filters are used to study the wavelength of 393.4nm. This emission line is one of 2 that are produced by Calcium just at the edge of the visible spectrum in a layer that is slightly lower and cooler than the layer viewed in Hydrogen-alpha. The emission line displays areas of Super Granulation Cells that are brightest and strongest in areas of high magnetic fields such as sunspot activity and active regions. Having the ability to study the Calcium K and the Hydrogen-alpha line provides important insights into the structure, strength, and depth of these active regions.

The Calcium K line is centered at 393.4nm. This wavelength is considered to be slightly outside the visible spectrum on the UV side. While most people can visually see the violet color of the wavelength, many cannot resolve the contrast due to yellowing of the cornea. People who have had cataract surgery are often able to see considerable detail. But, it is for these reasons that the Ca-K line is typically studied via the use of cameras which are able to provide stunning details.

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Technical specs: