Lunt LS40THa/B500 H-Alpha Solar Telescope
Lunt LS40THa/B500 H-Alpha Solar Telescope

Lunt LS40THa/B500 H-Alpha Solar Telescope


Regular price€1.109,00
(Including VAT)

Solar observation in H-alpha is the most spectacular way to see the suns constantly changing features, including Sunspots, Solar Flares and other features on its surface. This H-Alpha solar telescope has a 40mm aperture with a half-width of < 0.7 Angtröm - B500 blocking filter and Helical focuser.

The LS40THa/B500 is a complete telescope for observing the Sun in H-alpha light, with 40mm free aperture (no central obstruction) and 400mm focal length.

The Etalon filter with mechanical tilt tuning achieves a half-value width of <0.7 Angström and focusing is done using a 1.25" helical focuser. The zenith mirror contains the blocking filter is internally and is equipped with a holder for 1.25 inch eyepieces. This telescope's ease of use and simple setup makes it ideal for getting started with H-Alpha solar observation.

Note: Lunt Solar telescopes come with B500, B600 & B1200 filters with the larger ones providing a wider field of view and less shading on the edges. These telescopes are ideal of visual observation of the Sun however as they have a very small back focus, only cameras with a very sort distance to the sensor can be used for photography.


  • Aperture: 40mm (2-lens lens)
  • Focal length: 400mm
  • Half-value width: < 0.7 Angström
  • Tuning: Mechanical tilt tuning
  • Blocking Filter: B500 with 1.25 inch connector
  • Focuser: Helical focuser
  • Dovetail : Standard GP Vixen
  • 1/4-20 thread (standard thread for photo tripods)
  • Sun viewfinder included
  • Weight: 1.2kg
  • Length: 41cm
Whats included:
  1. LS40THa Solar Telescope
  2. B500 Blocking Filter in Zenith Mirror
  3. 1.25 inch Helical focuser
  4. GP Vixen rail
  5. Sun Viewfinder
  6. Operating instructions


Please Note: Items in stock and ready for dispatch immediately are usually delivered within 24 - 72hrs. We always try to offer the quickest possible delivery so items may be sent directly from either our Dublin or our Munich location, depending on stock availability. If an item is a 'Special Order Item' it will require additional lead time before being dispatched eg. 5 - 10 Working days - This will be highlighted on the product page before purchase.

All orders are shipped using our reputable courier partners to ensure your items arrive safely and promptly. While we do offer International Delivery, we are unable to ship large Telescopes and Mounts outside of Ireland.



Est. Delivery Time after Dispatch:
24 - 72 hrs

Standard Tracked Delivery:
Ireland Nationwide: from €9.95

Note: Larger telescopes which contain multiple boxes include an additional surcharge. Shipping is calculated automatically at the checkout.





Est. Delivery Time after Dispatch:
24 - 72 hrs

Standard Tracked Delivery:
Norther Ireland: from €19.50+

Additional Info:

Standard Express Shipping rate applies up to a max order weight of 30kg Nationwide. - Large heavy items from 30kg+ include an additional surcharge, depending on the overall weight.

Unfortunately due to Brexit we are currently unable to ship to Mainland UK at this time. 


Est. Delivery Time after Dispatch:
24 - 72 hrs

Standard Tracked Delivery:
European Union: from €18.95+

Shipping available for items up to a max order total weight or volumetric weight of 27kg.

Additional Info:

If your country is not listed below please contact us for more information.

Standard EU Delivery Regions:
Germany, France, Belgium, Poland, Luxumbourg, Netherlands, Sweden, Denmark, Portugal, Spain, Austria, Italy, Poland, Czech Republic, Croatia, Malta, Greece


Est. Delivery Time after Dispatch:
48 - 72 hrs

Standard Tracked Delivery:
US & Canada: from €28.50+

Shipping service available for items up to a max order total weight or volumetric weight of 20kg.

Additional Info:

 * Customs / Import duties may apply in these regions. For more information please contact your local tax/customs office.

: Its essential that when placing an order, you include a valid 'Contact Telephone Number' for the delivery address or for the person receiving the item. This is necessary to avoid potential delays or problems with your delivery.

Please Note: Delivery times listed above are estimated. These are calculated from when your order is Completed & Dispatched (not from when the order is placed) and times may also vary for some remote post codes. Delivery service takes place Mon-Fri (excl. Bank/Public Holidays).

Shipping Disclaimer: All of our parcels are sent via a 3rd party registered courier service to ensure safe and prompt delivery. While we endeavor to ensure that all parcels are delivered within the specified time frame, 'Horizon Astronomy' can not be held responsible for delays due to adverse weather conditions or other courier/technical related issues outside of our control.

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