7,500+ items available from stock
Best price guarantee
Your partner for astronomy
Solar Observation > Solar telescopes > Lunt Solar Systems > Lunt Solar Systems 50/350 LS50THa/B600PT Solar telescope
Product no.: 44941

50/350 LS50THa/B600PT Solar telescope

$ 2,070.00 incl. VAT, plus shipping costs
too expensive?
long-term
Product can be shipped as of 15.04.2025 + lead time

Product description

This compact telescope enables solar observation in H-alpha light.

A front non-obscured (full aperture) Etalon filter creates a half-width of less than 0.75 Angstrom. Solar prominences and surface details can be safely observed this way. Thanks to its extremely compact design, it is an ideal travel companion. The diagonal mirror, with its inbuilt blocking filter, is equipped with a helical focuser for 1.25” eyepieces.

Key features:

  • 50mm clear aperture with no central obstruction
  • 350mm focal length
  • Internal etalon with pressure tuning system: “PT Pressure Tuner”
  • Half width < 0.75 angstrom
  • Non-rotating helical focuser
  • Tube clamps with 1/4-20 thread (standard tripod thread)

Two versions of this model are available: one with a B400 and one with the larger B600 blocking filter. The B600 version is shown above. However, the difference can only be seen on its label.

Double stacking with a half width reduction to <0.5 angstrom is also possible. Lunt Solar Systems have designed their new LS50C Double Stack filter in its compact housing for this purpose (look under “Recommended Accessories”). This filter can be directly screwed on to the LS50THa telescope and provides significantly more detail and contrast on the Sun's surface.

Regular LS50FHa and LS60FHa double stack filters can also be used on LS50THa telescopes. The LS150/50 adapter, also found under “Recommended Accessories”, is designed for this purpose.

It not only matters which telescope you buy but also where you buy it. Our additional services:

  • We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
  • We provide a copy of the 80-page "Telescope ABC" beginners handbook with every telescope.

Our expert comment:

Amongst Lunt telescopes, there are a number of versions with different features. The model which is on offer can be deduced from the label.

An important price-influencing feature is the blocking filter size. There are 4 different blocking filters, with diameters of 4mm, 6mm, 12mm and 18mm. These are known as the B400, B600, B1200 and B1800. Unless otherwise stated in its name, an OTA does not include a blocking filter.

CaK or Ha indicate whether the devices are optimised for blue calcium spectral lines or for red H-alpha spectral lines. Over 90% of devices on sale are H-alpha devices, designated with Ha.

C or FT are used to distinguish between two versions of focusers. C is for standard focusers. FT is an improved model produced by FeatherTouch.

PT denotes devices with air pressure fine-tuning. Filters without PT use tilting for fine-tuning. Generally, air pressure models provide a more homogenous image field.

DS or DS50 are the identifiers for double stack. These devices have 2 etalon filters. These create narrower bandwidths and improved contrast.

2 numbers separated by a slash can also be found in the name. The first number denotes the diameter of the front lens. The second number is the focal length. So, a 60/500 is a telescope with an aperture of 60mm and a focal length of 500mm. Lens diameter generally refers to the diameter of the provided etalon.

(Bernd Gährken)

Specifications

Optics


Type
Refractor
Type of build
Solar H-Alpha
Aperture (mm)
50
Focal length (mm)
350
Aperture ratio (f/)
7
Resolving capacity
2,3
Light gathering capacity
50
Max. useful magnification
100
Tube weight (kg)
1,4
Bandwidth
0,75
Blocking Filter (mm)
6
Double Stack
no
Tube construction
Full tube

Focuser


Type of build
Helical
Rotating
yes
Connection ( to eyepiece)
1,25"

Mount


Mounting type
no mount
GoTo control
no
Type of build
OTA

Area of application


Moon & Planets
no
Nebulae & galaxies
no
Nature Observation
no
Astrophotography
yes
Sun
yes

Recommended for


Beginners
yes
Advanced
yes
Observatories
no

Recommended accessories

Telescope accessories > Transport & storage (6)
Carry case

Omegon carry case for 5" tubes/lenses

$ 99.00*
Telescope accessories > Other (12)
Solar finder

Lunt Solar Systems Solar finder

$ 65.00*
Eyepieces (3)
Eyepiece

Omegon Ultra Wide Angle eyepiece 9mm 1,25"

$ 69.00*
Eyepieces (4)

Omegon Suitcase with eyepieces and accessories

$ 199.00*
Eyepieces > Other (3)
Reticle eyepieces

Omegon Reticle eyepieces Illuminated crosshair eyepiece, 12.5mm

$ 89.00*
Filters > Nebulae filters (4)
Filters

Omegon Filters Nebula/ city light filter 1.25 ''

$ 39.90*
Filters > Other (3)
Filters

Omegon Filters Moon filter 1.25"

$ 19.90*
Astrophotography > Camera adaptor (3)
Projection adapter

Omegon Camera adapter 1.25"

$ 24.90*
Astrophotography > Camera mounts (4)

Omegon Easypic Universal Smartphone Adapter

$ 99.00*
Astrophotography > Other (3)
Camera

Lacerta Camera Standalone Autoguider MGEN Version 3

$ 1,020.00*
Mounts & accessories (2)
Mount

Skywatcher Mount Solarquest AZ

$ 550.00*
Observatories (1)

Omegon Tent observatory

$ 189.00*
Media > Astro books (3)

John Wiley & Sons Astronomy For Dummies

$ 24.90*
Media > Other (1)
Star chart

Omegon Star chart Planisphere

$ 14.90*
Outdoor > Lamps (3)
Astronomy torch

Explore Scientific Astronomy torch Astro R-Lite

$ 14.90*
Outdoor > Other (1)

Lunt Solar Systems Sun hat with neck protector

$ 65.00*
Solar Observation > Solar Filters (4)
Filters

Lunt Solar Systems Filters LS50C double-stack filter

$ 1,850.00*
Maintenance & Cleaning > Lens cleaners (3)

Omegon 7-in-1 lens cleaning set

$ 19.90*
Maintenance & Cleaning > Other (2)

Omegon microfibre cleaning cloth 20cm x 20cm

$ 4.90*

*All prices include VAT plus shipping costs.

Lunt Solar Systems 50/350 LS50THa/B600PT Solar telescope

Customer reviews

There are no customer reviews for this product yet.

Compose your own review

Do you have specific questions about your order or products? Please contact our customer service!

Customers who bought this product also bought...