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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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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.

References

Prominences:
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:
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.

Spicules
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 19th, 2011

B600 2″ Diagonal Blocking Filter

BLOCKING FILTERS ARE REQUIRED ON ALL LUNT SOLAR SYSTEMS

Lunt Solar Systems currently offers 4 blocking filter apertures for use with our Etalon systems. The Blocking Filter houses additional filters which are required for the safety and performance of the solar package.  Lunt Solar blocking filters contain a unique filter system. We can only warranty safety or performance when one of our blocking filters is paired with a Lunt H-alpha filter or telescope.

Focal Length Specifications (Visual Use):

B600 :  For visual use on telescopes with focal lengths up to 600mm
B1200: For visual use on telescopes with focal lengths up to 1200mm
B1800: For visual use on telescopes with focal lengths up to 1800mm
B3400: For visual use on telescopes with focal lengths up to 3400mm (only available in straight-thru design)

Focal Length Specifications (Imaging Use):

When imaging with a Lunt Solar System it is recommended that the user opt for the next larger Blocking Filter than that recommended for Visual use.  This is due to the fact that most Imaging Systems require additional “backfocus”.  This requires that the Blocking Filter be moved further up the light cone. As a result the aperture of the Blocking filter needs to be larger to allow for the larger cone size.

B600:   For imaging use on telescopes with focal lengths up to 400mm
B1200: For imaging use on telescopes with focal lengths up to 600mm
B1800: For imaging use on telescopes with focal lengths up to 1200mm
B3400: For imaging use on telescopes with focal lengths up to 1800mm (only available in straight-thru design)

Lunt Solar Blocking Filter Housing Options

- 1.25″ or 2″ diagonal with T2 connection
- 2″ extension tube with T2 and 2” connection, aka “straight-thru”

B600 1.25″ Diagonal Blocking Filter

Pricing for Diagonal Blocking Filters

B600d1
*B600 Blocking Filter in 1.25″ Diagonal with T2 connection
Retail Price:  $348.00

B600d2
*B600 Blocking Filter in 2″ Diagonal with T2 connection
Retail Price:  $348.00

B1200d1
*B1200 Blocking Filter in 1.25″ Diagonal with T2 connection
Retail Price:  $648.00

B1200d2
*B1200 Blocking Filter in 2″ Diagonal with T2 connection
Retail Price:  $648.00

B1800d1
*B1800 Blocking Filter in 1.25″ Diagonal with T2 connection
Retail Price:  $998.00

B1800d2
*B1800 Blocking Filter in 2″ Diagonal with T2 connection
Retail Price:  $998.00

 

Straight-Through Blocking Filter

Pricing for 2″ Extension Tube Blocking Filters

B600s
*B600 Blocking Filter in 2″ Extension Tube with T2 & 2″ Connection
Retail Price:  $348.00

B1200s
*B1200 Blocking Filter in 2″ Extension Tube with T2 & 2″ Connection
Retail Price:  $648.00

B1800s
*B1800 Blocking Filter in 2″ Extension Tube with T2 & 2″ Connection
Retail Price:  $998.00

B3400s2
*B3400 Blocking Filter in 2″ Extension Tube with T2 & 2″ Connection
Retail Price:  $1798.00

Pricing for Blocking Filter Adapter

 ADP2-1.25
*2″ to 1.25″ Adapter
Retail Price:  $20.00

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.

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

luntsolarsystems.com

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