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Astronomy > Telescopes > Solar telescopes > Acuter > Acuter Solar telescope ST 40/250 LUMA-X 40ED
Product no.: 90893

Solar telescope ST 40/250 LUMA-X 40ED

$ 1,690.00 incl. VAT plus shipping costs
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long-term
Product can be shipped as of 15.06.2026 + lead time

Special service due to long delivery time: Order now and pay once the item is ready for dispatch!

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  • Telescope for observation of the sun in H-Alpha
  • Also suitable for observation in white light for sunspots
  • Magnification with zoom eyepiece: 15 to 50 times
  • Compact and very lightweight during transport
  • Includes solar finder and sunshade

Product description

The Acuter Luma-X 40ED solar telescope offers a special innovation. The combination of neutral density filter and blockfilter built into the rear deflection optics can be switched so that the telescope can show the sun in either H-alpha light or white light. This allows you to observe either protuberances or sunspots – with just one instrument!

The telescope objective contains an ED glass element that increases sharpness and contrast as well as colour fidelity and detail reproduction.

The Acuter Luma-X 40ED is a safe solar telescope equipped with a 40-millimetre etalon that displays the H-alpha line with a half-width of 0.6 angstroms or better. This allows observation of active prominences, filaments and other details on the sun's surface.

The set includes a zoom eyepiece, a universal smartphone adapter, a solar finder and a sun visor.

The Acuter Luma-X 40ED complies with and meets the transmission requirements of ISO 12312-2:2015 (filters for direct observation of the sun). Always follow the instructions in the manual.

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.

Specifications

Optics


Type
Refractor
Type of build
Solar H-Alpha
Aperture (mm)
40
Focal length (mm)
250
Aperture ratio (f/)
6,3
Resolving capacity
3,45
Max. useful magnification
80
Tube weight (kg)
1,9
Tube length (mm)
275
Filter systems
H-alpha
Blocking Filter (mm)
8
Bandwidth
< 0,6

Focuser


Type of build
Crayford
Connection ( to eyepiece)
1.25
Backfocus (mm)
25
Gear reduction
without
Rotating
yes

Mount


Type of build
OTA
Mounting type
no mount

Included accessories


1.25'' eyepieces
Zoom eyepiece
Finder scope
Solar finder
Deviating optics
Blockfilter
Prism rail
Vixen-Style
Thread for camera tripod
1/4
Solar Filters
yes
Carry case
yes
finder base
Prism clamp
Tube clamps
no
Miscellaneous
Lens hood
Camera adaptor
Smartphone

General


shipping weight (kg)
4

Area of application


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

Recommended for


Beginners
yes
Advanced
yes
Observatories
no

Product safety

Manufacturer: Suzhou Synta Optical Technology Co., Ltd., No.65, Yushan Road, High-tech Zone, 215011 Jiangsu, CN
Responsible person: NIMAX GmbH, Otto-Lilienthal-Str. 9, 86899 Landsberg am Lech, DE, [email protected]

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*All prices include VAT plus shipping costs.

Acuter Solar telescope ST 40/250 LUMA-X 40ED
Switchable between H-alpha and white light
Acuter Solar telescope ST 40/250 LUMA-X 40ED
Etalon-Tuning
Acuter Solar telescope ST 40/250 LUMA-X 40ED
Lens hood
Acuter Solar telescope ST 40/250 LUMA-X 40ED
Carry case

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