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Stephen Ramsden’s Corner

Visit Charlie Bates Solar Astronomy Project for everything solar, from reviews to imaging to outreach, and become a part of the solar community!

Thanks, Stephen, for all your hard work.

Image of the week

Here is the Solar Image of the Week.
Thanks to: Howard
Lunt Solar CaK Filter

A very nice image from Florida.

Real Time Images: The Very Latest from SOHO

SOHO, the Solar & Heliospheric Observatory, is a project of international collaboration between ESA and NASA to study the Sun from its deep core to the outer corona and the solar wind.


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Visit our Home Webpage to view our products and picture galleries

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Open discussion forum regarding Solar equipment. A great place to ask questions.


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Lunt Solar Image Gallery
Visit this link to enter our image gallery area. View images by product.

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The Sun is our Star!

.......and as you would expect, our Star is hot, bright, dynamic, and sometimes quite violent.

At 93 million miles away, we are ideally placed at a point where the Sun provides just enough warmth and energy essential to our living planet, Earth.

At only 93 million miles, the Sun is close enough for us to view its surface through a fairly inexpensive specialized scope from the comfort and relative safety (sunscreen, please) of our backyards on a clear and sunny day.

What! Astronomy during the day? Lunt Solar wants to show you how.


These look like eruptions from the edge of the Solar disk. Prominences can appear as small spiky-looking details, or large cloud-like detail with fine feather-like features. They are, in fact, ionized Hydrogen-alpha emissions being projected from the limb.

Prominences are anchored to the Sun's surface in the Mesosphere, and extend outward into the Sun's Troposphere. They typically measure many earth diameters.

Filaments are string-like features on the surface of the Sun. At high resolution they take on a 3D effect due to the cooler aspect of the suspended filament contrasted against the bright, hotter Sun.

Filaments are actually prominences being viewed against the surface.

A Spicule is a dynamic jet of gas about 500km long. They move outward at about 20km/second through the Chromosphere.

Father Angelo Secchi of the Vatican Observatory discovered them in 1877.

The Chromosphere is entirely composed of Spicules. These features can be seen as "fur" around the edge of the disk.

There's definitely stuff to look at :)

February 25th, 2011


Perfect for Educational Facilities and Beginner thru Advanced Users

The LS60THa is a complete Solar Telescope. The refractor based system has a precision aligned singlet chromatical lens with a 60mm aperture. The front singlet lens reduces half the stray light of an achromat , fully eliminating the possibility of on-axis coma, astigmatism, de-centering 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.

LS60THa Specifications: (single stacked)

  • Optical Aperture: 60mm
  • Etalon: Internal <0.75 Angstrom
  • Tuning: Tilt
  • Focal Length: 500mm
  • F Ratio: 8.3
  • Focuser: 2″ Crayford with 10:1 fine adjustment (standard) or 2″ Feather Touch with 10:1 (upgrade)
  • Mounting: Integrated clamshell style with 1/4-20 tapped base
  • Storage: Aluminum finished hard case with fitted foam
  • Weight: 6 lb.

LS60THa Pricing:

The Lunt Solar Systems LS60THa solar telescope with tilt tuning is available in several variations, including double-stacked models.  Below is a list of choices and their prices.

* Standard system with 2″ Crayford focuser.  Requires Blocking Filter, sold separately. (see “blocking filters”)
Retail Price:  $948.00

* Standard system with B600 visual use blocking filter & 2″ Crayford focuser
Retail Price:   $1,296.00

* Standard system with B600 visual use blocking filter and upgraded 2″ 10:1 Feathertouch focuser
Retail Price:   $1,716.00

* Standard system with B1200 blocking filter & 2″ Crayford focuser
Retail Price:  $1,596.00

* Standard system with B1200 blocking filter and upgraded 2″ 10:1 Feathertouch focuser
Retail Price:   $2,016.00

*Double-stacked system with B600 visual blocking filter, 2″ Crayford focuser, and additional 50mm etalon.
Retail Price:   $2294.00

*Double-stacked system with B600 visual blocking filter, 2″ Feathertouch focuser, and additional 50mm etalon.
Retail Price:   $2714.00

*Double-stacked system with B1200 imaging blocking filter, 2″ Crayford focuser, and additional 50mm etalon.
Retail Price:   $2594.00

*Double-stack system with B1200 imaging blocking filter, 2″ Feathertouch focuser, and additional 50mm etalon.
Retail Price:   $3014.00


To make a purchase, contact us directly or buy from a dealer. Prices are shown in US dollars and are subject to change without notice.


Optional Accessories: (see “accessories”)

Please Note: The LS60THa is also available with a pressure tuning system, or a pressure tuner & additional externally mounted 50mm unobstructed etalon (double-stacking) for <0.5A views.  Click the links to see Lunt 60mm Solar Telescopes with Pressure Tuner Adjustment, or Lunt 60mm Double-Stacked Solar Telescopes with Pressure Tuner.

Customer Solar Images:

For more images visit the Lunt Solar Image Gallery


No-one brings you closer to our nearest Star than Lunt Solar Systems… the next generation of Solar Instrumentation.

About Lunt Solar Systems LLC…

Lunt Solar Systems is a manufacturing and sales facility located in Tucson, Arizona. Lunt Solar design, fabricate, assemble, and test solar telescopes and solar filters. Whether you are looking for a dedicated solar telescope or a solar filter for attachment to you own astronomy telescope, we can help. Solar telescopes models start at $598 for an LS35T (telescope) or the only slightly more expensive LS50F (filter), all the way thru the 152T and the 160F. Solar observing is both fun and educational. Don’t miss out on Solar Maximum.


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Lunt Solar Systems LLC

2520 N. Coyote Drive
Suite 111
Tucson AZ 85745


Telephone: 1-877-344-7348
Telephone: 520-344-7348
Fax: 520-344-7352
e-mail: sales@luntsolarsystems.com