LUNT LS50FHa/B3400 H-alpha solar filter

Product code: 0550207
in stock
£3,683.33 (ex. VAT)

PREORDER : 1-4 Weeks

You will earn 4420 loyalty points with this purchase

Product information

Transforms a normal telescope up to 3060mm focal length into an H-alpha solar telescope showing prominences & more

  • Special filter for the observation of the sun
  • For telescopes up to 3060mm focal length & 2" focuser
  • Additional adapter plate required for mounting
  • Shows protuberances & more details on the sun
  • Bandwidth less than 0.75 Angstrom
  • Filter system with H-Alpha Etalon & Blocking Filter
  • For visual sun observation & photography
  • Absolutely safe, no danger to the eyes

50mm H-alpha solar filter system with B3400 blocking filter, for front mounting at telescopes with 2" focuser, and up to 3060mm focal length.

The LS50FHa H-alpha Etalon filter system with 50mm aperture (no central obstruction) for use on any refractor and many other telescopes. Because the LS50FHa has an estimated bandwidth of <0.75 Angstrom it is capable to providing high contrast views of both solar surface and edge detail (prominences).
The system includes the B3400 blocking filter, which is usable for telescopes up to 3060mm focal length. The blocking filter is installed in a straight extension tube for 2" focuser. This extension tube is equipped with a reception for 2" eyepieces and a adapter for 1.25" eyepieces.

Adding an additional available double-stack Etalon system will reduce the bandwidth to ~<0.55 Angstrom.


  • Aperture: 50 mm
  • No central obstruction
  • Bandwidth: <0.75 Angstrom
  • Tuning: tiltable Etalon
  • Housing diameter: 95 mm
  • Length: 73 mm
  • Weight: 0.7 kg
  • Front thread: M90x1 female thread
  • Rear thread: M90x1 male thread
  • Blocking filter: B3400 in extension tube for 2" focuser
  • Maximum focal length of telescope: 3060 mm
  • LS50FHa solar filter
  • B3400 Blocking Filter (for 2" focuser) in extension tube
  • Transport case
  • Instruction manual

Product Info

GTIN 4007922013343
PREORDER 1-4 Weeks
Brand Lunt
Product Code 0550207
Delivery Weight Package