LUNT LS40THa/B600 H-alpha Solar Telescope
 LUNT LS40THa/B600 H-alpha Solar TelescopeLUNT LS40THa/B600 H-alpha Solar Telescope 

LUNT LS40THa/B600 H-alpha Solar Telescope

  (1 Review)
✓ 2 year warranty


Out of stock due 90-120 working days

About this product

Model:  lunt_ls40tha_b600
Part Number:  0551146

Convenient size and easy handling make this an excellent H-Alpha solar telescope for anyone starting solar observation. 

The LS40THa/B600 H-alpha solar telescope with 40mm aperture, 400mm focal length, <0.7 Angstrom bandwidth, B600 blocking filter and Helical focuser provides a safe, easy and affordable way to view prominences, filaments and flares. 

The B600 Blocking Filter offers a larger field of view than the B500 Blocker.


  • Absolutely safe, no danger to the eyes
  • Shows prominences & more details on the sun
  • Easy to use, well suited for beginners
  • For visual sun observation
  • Etalon with mechanical tilt-tuning provides <0.7 Angstrom bandwidth
  • Medium B600 blocking-filter
  • Works with 1.25" eyepieces


What's in the box

  • LS40THa Solar Telescope
  • B600 blocking filter in star-diagonal housing
  • 1.25 inch Helical focuser
  • Dovetail bar (GP level)
  • Sol-Searcher
  • Instruction manual



Aperture 40mm - No Central Obstruction
Bandwidth <0.7 Angstrom
Tuning Mechanical Tilt Tuning
Blocking Filter B600 with 1.25" Connection
Focuser Helical Focuser
Dovetail Bar Standard Vixen Style
Photo Tripod Thread 1/4-20 tapped base
Finder Sol Searcher
Weight 1.2kg
Length 41cm
Observation Prominences and Details on The Sun
Warranty 2 years




Customer reviews

Average Rating (1 Review):  
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Lunt LS40THa/B600 sSolar Telescope
19 June 2023  | 

Good build quality. The B600 Blocking Filter is more than adequate for viewing. The only real let down is the helical focuser. Considering that the telescope itself is over a thousand pounds, would it have been too much to have included a standard rack and pinion focuser. However, I did manage to get an image of the sun using a dslr camera. I think that if Lunt made the 50mm version with a rack and pinion focuser they would be on to a winner. I did contact FLO about getting a replacement rack and pinion focuser for the LS40THa but they said that they were hard to acquire. That is my only real gripe about an otherwise good telescope. However, I should have purchased the 50mm or 60mm version. The 60mm version comes with a rack and pinion focuser.


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