Lunt 40mm Ha Solar Telescope with B600 Blocking Filter & 10:1 R&P Focuser

- This item is currently on backorder from the manufacturer.
- Orders are fulfilled in the order they are received once inventory arrives.
Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
Contiguous US / Lower 48:
Free shipping applies to orders over $50 using our chosen carrier/method. Faster paid options are available at checkout.
Alaska, Hawaii & US Territories:
Free shipping applies to many—but not all—products. Enter your ZIP code in cart or upon checkout to confirm options and costs.
International:
International orders do not qualify for free shipping. Shipping, duties, brokerage, tariffs, and taxes are the customer’s responsibility. Some items may be restricted due to export, size, or manufacturer limitations.
Lunt Solar Systems has recently upgraded this telescope with a new <0.4Å etalon (standard), delivering even higher contrast and finer solar detail than previous versions. All orders will ship with this latest, improved configuration—no action needed.
- New-generation <0.4Ã… etalon delivers higher contrast and finer solar surface detail than previous versions
- Lightweight grab-and-go design weighs under 3 lbs for effortless solar observing anywhere
- A smooth 1.25-inch dual-speed focuser for sharp visual observing and easier solar imaging
- H-alpha solar filters reveal stunning prominences, filaments, active regions, and chromospheric texture in real-time
Lunt 40mm H-alpha: The Ultimate Grab-and-Go Solar Telescope!
The Lunt LS40THa Dedicated H-Alpha Solar Telescope is the perfect entry into high-contrast solar observing—compact, lightweight, and incredibly fun to use. This updated version now features Lunt’s new-generation enhanced etalon system with an upgraded <0.4Å bandpass, delivering dramatically improved solar contrast, darker backgrounds, and finer chromospheric detail compared to previous generations.
Built around a precision 40 mm doublet optical system optimized specifically for H-alpha observing, the LS40THa reveals stunning prominences, filaments, active regions, and solar surface texture in a portable package weighing under 3 lbs (1.36 kg). The included B600 blocking filter provides safe visual observing and entry-level solar imaging capability right out of the box.
This upgraded configuration also features a smooth dual-speed focuser for more precise focusing during both visual observing and solar imaging sessions—making it easier than ever to dial in razor-sharp views of the Sun’s constantly changing activity. Lightweight, easy to transport, and quick to set up, the LS40THa is an ideal grab-and-go solar telescope for beginners and experienced observers alike!
Specifications
-
Aperture: 40 mm
-
Objective Glass: FLP51 ED Doublet
-
Focal Length: 400 mm
-
Focal Ratio: f/10
-
Etalon: Front-mounted; tilt-tuned
- Blocking Filter: 6mm clear aperture - 1.25-inch diagonal
-
Bandpass (Single Stack): <0.4Å — individually verified
-
Double Stack (sold separately): <0.29Ã… combined
-
Focuser:
-
- 1.25" R&P Focuser (10:1 Dual-speed)
- CNC-machined aluminium/brass
- 0.5 in (12.7 mm) focus travel
- Rotatable w/ Integrated brake
- 6-8 lb (2.7-3.6 in kg) weight capacity
-
-
Weight: 2.6 lb (1.28 kg)
-
Night Use: No - dedicated H-alpha Solar
Other Information
- Country of Manufacture: United States
Lunt 40mm H-alpha: The Ultimate Grab-and-Go Solar Telescope!
The Lunt LS40THa Dedicated H-Alpha Solar Telescope is the perfect entry into high-contrast solar observing—compact, lightweight, and incredibly fun to use. This updated version now features Lunt’s new-generation enhanced etalon system with an upgraded <0.4Å bandpass, delivering dramatically improved solar contrast, darker backgrounds, and finer chromospheric detail compared to previous generations.
Built around a precision 40 mm doublet optical system optimized specifically for H-alpha observing, the LS40THa reveals stunning prominences, filaments, active regions, and solar surface texture in a portable package weighing under 3 lbs (1.36 kg). The included B600 blocking filter provides safe visual observing and entry-level solar imaging capability right out of the box.
This upgraded configuration also features a smooth dual-speed focuser for more precise focusing during both visual observing and solar imaging sessions—making it easier than ever to dial in razor-sharp views of the Sun’s constantly changing activity. Lightweight, easy to transport, and quick to set up, the LS40THa is an ideal grab-and-go solar telescope for beginners and experienced observers alike!
Specifications
-
Aperture: 40 mm
-
Objective Glass: FLP51 ED Doublet
-
Focal Length: 400 mm
-
Focal Ratio: f/10
-
Etalon: Front-mounted; tilt-tuned
- Blocking Filter: 6mm clear aperture - 1.25-inch diagonal
-
Bandpass (Single Stack): <0.4Å — individually verified
-
Double Stack (sold separately): <0.29Ã… combined
-
Focuser:
-
- 1.25" R&P Focuser (10:1 Dual-speed)
- CNC-machined aluminium/brass
- 0.5 in (12.7 mm) focus travel
- Rotatable w/ Integrated brake
- 6-8 lb (2.7-3.6 in kg) weight capacity
-
-
Weight: 2.6 lb (1.28 kg)
-
Night Use: No - dedicated H-alpha Solar
| Manufacturer | Lunt Solar Systems |
|---|---|
| Telescope Focal Length | 301 - 400mm |
- 1x Lunt 40mm H-alpha Solar Telescope
- 1x 1.25" Dual-Speed R&P Focuser
- 1x 6mm Blocking Filter Diagonal – 1.25"
- 1x TeleVue Sol Searcher
- 1x 4" Vixen-Style Dovetail Plate
Lunt Solar Systems has recently upgraded this telescope with a new <0.4Å etalon (standard), delivering even higher contrast and finer solar detail than previous versions. All orders will ship with this latest, improved configuration—no action needed.
- New-generation <0.4Ã… etalon delivers higher contrast and finer solar surface detail than previous versions
- Lightweight grab-and-go design weighs under 3 lbs for effortless solar observing anywhere
- A smooth 1.25-inch dual-speed focuser for sharp visual observing and easier solar imaging
- H-alpha solar filters reveal stunning prominences, filaments, active regions, and chromospheric texture in real-time
Lunt 40mm H-alpha: The Ultimate Grab-and-Go Solar Telescope!
The Lunt LS40THa Dedicated H-Alpha Solar Telescope is the perfect entry into high-contrast solar observing—compact, lightweight, and incredibly fun to use. This updated version now features Lunt’s new-generation enhanced etalon system with an upgraded <0.4Å bandpass, delivering dramatically improved solar contrast, darker backgrounds, and finer chromospheric detail compared to previous generations.
Built around a precision 40 mm doublet optical system optimized specifically for H-alpha observing, the LS40THa reveals stunning prominences, filaments, active regions, and solar surface texture in a portable package weighing under 3 lbs (1.36 kg). The included B600 blocking filter provides safe visual observing and entry-level solar imaging capability right out of the box.
This upgraded configuration also features a smooth dual-speed focuser for more precise focusing during both visual observing and solar imaging sessions—making it easier than ever to dial in razor-sharp views of the Sun’s constantly changing activity. Lightweight, easy to transport, and quick to set up, the LS40THa is an ideal grab-and-go solar telescope for beginners and experienced observers alike!
Specifications
-
Aperture: 40 mm
-
Objective Glass: FLP51 ED Doublet
-
Focal Length: 400 mm
-
Focal Ratio: f/10
-
Etalon: Front-mounted; tilt-tuned
- Blocking Filter: 6mm clear aperture - 1.25-inch diagonal
-
Bandpass (Single Stack): <0.4Å — individually verified
-
Double Stack (sold separately): <0.29Ã… combined
-
Focuser:
-
- 1.25" R&P Focuser (10:1 Dual-speed)
- CNC-machined aluminium/brass
- 0.5 in (12.7 mm) focus travel
- Rotatable w/ Integrated brake
- 6-8 lb (2.7-3.6 in kg) weight capacity
-
-
Weight: 2.6 lb (1.28 kg)
-
Night Use: No - dedicated H-alpha Solar
Other Information
- Country of Manufacture: United States
| Manufacturer | Lunt Solar Systems |
|---|---|
| Telescope Focal Length | 301 - 400mm |
- 1x Lunt 40mm H-alpha Solar Telescope
- 1x 1.25" Dual-Speed R&P Focuser
- 1x 6mm Blocking Filter Diagonal – 1.25"
- 1x TeleVue Sol Searcher
- 1x 4" Vixen-Style Dovetail Plate

Lunt 40mm Ha Solar Telescope with B600 Blocking Filter & 10:1 R&P Focuser
