These Hydrogen-alpha Filter systems can be designed for beginners as well as advanced users

The Lunt LS50FHa is a 50mm aperture (no central obstruction) integrally tuned etalon for use on any customer supplied refractor.

The standard system includes the B600 blocking filter, which provides full disk images on telescopes up to 540mm focal length. Larger blocking filters suitable for longer focal length telescopes are also available options.

These Hydrogen-alpha Filters are designed to retrofit (adapters required) the customer supplied telescope for use during the day. They are easily removable so that the scope can continue to be used for night observing.

Several sizes can be matched to the existing scope aperture. Systems include front mounted filter and the required rear mounted 2″ or 1.25″ blocking diagonal (dependent upon focuser size).

Because the LS50 has an estimated bandpass of <0.70 Angstroms it is capable of providing high contrast views of both surface and edge detail. Adding an additional etalon system (double-stacking) will reduce the bandpass to ~<0.50 (dependant upon scope) allowing for higher resolution viewing and/or imaging.

Customer Solar Images:

• Paolo Porcellana
• John Chumack
• Alan Clitherow
• Savio Fong
• Jim Ferreira
• Eric Africa
• Vid Nikolic
• Your Image Gallery here?

For more images visit the Lunt Solar Image Gallery

LS50FHa Specifications: (single filter)

• Optical Aperture: 50mm
• Etalon: Internal <0.70 Angstrom
• Tuning: Tilt
• Image Scale: Focal Length/110 x 50 = Image Scale
• Focal Length: Customer Telescope
• Storage: Aluminum finished hard case with fitted foam
• Weight: 2 lbs (~1kg)
• Starting at: US$1346 (with B600 Blocking Filter)

Required Blocking Filter: (see “blocking filters”)

• B600 for standard visual use
• B1200 for larger field of view and imaging applications (upgrade)
• B1800 for larger field of view and imaging applications (upgrade)
• B3400 for larger field of view and imaging applications (upgrade)

Required Accessories: (see “accessories“)

• Typically an adapter plate will be required to attach a Lunt Solar Filter to the front of a customer supplied telescope. These adapter are in stock for the more common user scopes, but can be custom made to your specific requirement.
• No adapter is needed to add a LS50/DS module to a LS50FHa.
• More information see: “adapter plates“.

Lunt LS50FHa Packages……

The LS50FHa is available in many optional variations, here are a few examples to aid in description and part numbers for pricing.

LS50FHa1/B600
* Standard system with B600 visual use blocking filter for 1.25″ focuser and up to 540mm focal length
Retail Price: US$1,346.00

LS50FHa2/B600
* Standard system with B600 visual use blocking filter for 2″ focuser and up to 540mm focal length
Retail Price: US$1,346.00

LS50FHa1/B1200
* Standard system with B1200 imaging upgraded blocking filter for 1.25” focuser and up to 1080mm focal length
Retail Price: US$1,646.00

LS50FHa2/B1200
* Standard system with B1200 imaging upgraded blocking filter for 2” focuser and up to 1080mm focal length
Retail Price: US$1,646.00

LS50FHa1/B1800
* Standard system with B1800 imaging upgraded blocking filter for 1.25″ focuser and up to 1620mm focal length
Retail Price: US$1,996.00

LS50FHa2/B1800
* Standard system with B1800 imaging upgraded blocking filter for 2″ focuser and up to 1620mm focal length
Retail Price: US$1,996.00

LS50FHa2/B3400
* Standard system with B3400 imaging upgraded blocking filter for 2″ focuser and up to 3060mm focal length
Retail Price: US$2,796.00

A 50mm Doublestack module is required to reduce the bandpass of the optical systems to ~<0.50 Angstroms

LS50FHa Double Stack (matched)
* Double-Stack Etalon for all LS50FHa Filter and Lunt Telescopes
Retail Price: US$998.00

LS50FHa shown with Optional LS50FHa/DS module.
Using the DS module on a LS50FHa filter or as a DS module for our LS60THa series scopes will reduce the bandpass to ~<0.50 Angstoms.

These part numbers can be looked up in the Price List or call for more information.

Pre-orders will be shipped in the order they are received.
Prices 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 LS35THa (telescope) or the only slightly more expensive LS50FHa (filter), all the way thru the 152THa and the 100FHa. Solar observing is both fun and educational. Don’t miss out on Solar Maximum.