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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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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 :)

May 9th, 2012

New Eyepieces from Lunt…..

Lunt is proud to introduce our new family of Eyepieces that are optimized at the 656nm wavelength.

Our new eyepieces are not only stylized in the Lunt Red and Black color scheme, the coatings are also optimized at 656nm in order reduce back reflections when used for Hydrogen-alpha observing.

The Lunt Eyepieces have the very same AR coatings that we currently incorporate into our Etalons. At <0.1% AR, they utilize the highest specification for Anti-reflective coatings available in the industry.

The Lunt Eyepiece optical design was chosen in order to provide an optimum range of eye relief and FOV.

Given the optimization in the red end of the spectrum, Lunt eyepieces will also work very well for night time observing..



  • Focal Length: 8mm
  • FOV: 53 degrees
  • Eye Relief: 10mm
  • Elements: 4
  • Barrel Size: 1.25″
  • Weight: 3 oz


  • Focal Length: 12mm
  • FOV: 60 degrees
  • Eye Relief: 11mm
  • Elements: 5
  • Barrel Size: 1.25″
  • Weight: 4 oz


  • Focal Length: 16mm
  • FOV: 60 degrees
  • Eye Relief: 15mm
  • Elements: 5
  • Barrel Size: 1.25″
  • Weight: 4 oz


  • Focal Length: 19mm
  • FOV: 65 degrees
  • Eye Relief: 12mm
  • Elements: 5
  • Barrel Size: 1.25″
  • Weight: 4 oz


  • Focal Length: 27mm
  • FOV: 53 degrees
  • Eye Relief: 18mm
  • Elements: 5
  • Barrel Size: 1.25″
  • Weight: 6.4oz

Price: US$119 per single eyepiece / US$499 for the set of 5 eyepieces (case not included)

Availability: Limited availability from stock. Check with your Lunt dealer or order direct.

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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