Lunt 50mm Ha Etalon Filter

$998.00

Availability: More on the way

The Lunt LS50FHa is a 50 mm aperture (no central obstruction) integrally tuned etalon for use on any customer-supplied refractor.
Our Product #: LS50F
Lunt Solar Systems Product #: LS50FHa
 

Product Description

General Features:

  • 50mm front-mounted non-obstructed hydrogen-alpha filter for use on a wide range of telescopes!
  • Connect the Lunt LS50FHa to your telescope with the appropriate adapter (sold separately), or use it to double-stack on an existing Lunt 50mm filter for a ~<0.5A band pass!
  • Choose the appropriate LS50FHa and blocking filter for your telescope's focal length and focuser size.

Required Accessories:  Typically an adapter plate will be required to attach a Lunt Solar Filter to the front of a customer-supplied telescope. These adapters are in stock for the more common user scopes, but can be custom made to your specific requirement.  No adapter is needed to add one LS50FHa to another for double-stacking.

The Lunt LS50FHa is a 50 mm 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 540 mm focal length. Larger blocking filters suitable for longer focal length telescopes are also available options.  All LS50FHa systems include a front-mounted filter and a rear mounted 2? or 1.25? blocking diagonal. Choose the blocking filter that best suits your telescope and your focuser size.

  • B600 - Up to 540 mm focal length, offered in 1.25? or 2? diagonal
  • B1200 - Up to 1080 mm focal length, offered in 1.25? or 2? diagonal
  • B1800 - Up to 1620 mm focal length, offered in 1.25? or 2? diagonal
  • B3400 - Up to 3060 mm focal length, offered in 2? straight-through tube

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.

Because the LS50FHa has an estimated bandpass of <0.70 Angstrom 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 (dependent upon scope) allowing for higher resolution viewing and/or imaging. The part number LS50FHa is offered for this purpose or for those who already have a Lunt blocking filter. A Lunt blocking filter must be used with Lunt Ha filters at all times.

LS50FHa Specifications: (single filter)

  • Optical Aperture: 50 mm
  • Etalon: Internal <0.70 Angstrom
  • Tuning: Tilt
  • Focal Length: Customer Telescope
  • Storage: Aluminum finished hard case with fitted foam
  • Weight: 2 lb (~1kg)

Tech Details

Reviews

Review by:
I am using the Lunt filter as a double stack with Quark Chromosphere in hi-res H-Alpha imaging or as a front etalon with P.S.T. for amazing double stack visual observation. (Posted on 10/6/2018)
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