50mm solar telescope for observing prominences & more with the advanced Pressure-Tuner system
- Special telescope for the observation of the sun
- Absolutely safe, no danger to the eyes
- Shows protuberances & more details on the sun
- For the visual observation of the sun
- Bandwidth less than 0.75 Angstrom
- With comfortable air pressure tuning
- Small B400 blocking filter in zenith mirror
€1,698.00*
Unfortunately, no longer available
Product number:
14131
Former product no.:
0551154
Note: Our item numbers have been updated.
You can continue to search for products using either the previous or the new item number.
EAN:
4007922011653
WEEE-Reg.-Nr.:
DE 34323861
Product information "LUNT LS50THa/B400PT H-alpha solar telescope"
A very compact, complete telescope for observing the sun in H-alpha light.
The LS50THa solar telescope offers 50 mm free aperture, 350 mm focal length, and provides a bandwidth of <0.75 Angstrom. The telescope is fitted as standard with the air-pressure tuning system "Pressure-Tuner", the Etalon is safely installed inside the telescope. Prominences and surface detail can quickly be viewed spontaneously. This very portable system is an ideal travel companion for wherever you go.
A B400 blocking filter is installed inside the star diagonal. The B400 is good for visual observing. Focusing is achieved by a non-roting Helical focuser.
Please note that there is only a small back-focus at this telescope, therefore solar-imaging is very difficult. The LS50THa is designed for visual solar observing. We recommend for imaging the 60mm telescopes of the LS60MT series.
Also double-stacking with a bandwidth of only <0.5 Angstrom is possible by using the additional available LS50C filter (0550210). This filter threads directly onto the LS50THa telescope. Double-stacking will provide much more contrast, and more details on the sun will become visible.
FEATURES
The LS50THa solar telescope offers 50 mm free aperture, 350 mm focal length, and provides a bandwidth of <0.75 Angstrom. The telescope is fitted as standard with the air-pressure tuning system "Pressure-Tuner", the Etalon is safely installed inside the telescope. Prominences and surface detail can quickly be viewed spontaneously. This very portable system is an ideal travel companion for wherever you go.
A B400 blocking filter is installed inside the star diagonal. The B400 is good for visual observing. Focusing is achieved by a non-roting Helical focuser.
Please note that there is only a small back-focus at this telescope, therefore solar-imaging is very difficult. The LS50THa is designed for visual solar observing. We recommend for imaging the 60mm telescopes of the LS60MT series.
Also double-stacking with a bandwidth of only <0.5 Angstrom is possible by using the additional available LS50C filter (0550210). This filter threads directly onto the LS50THa telescope. Double-stacking will provide much more contrast, and more details on the sun will become visible.
FEATURES
- Aperture: 50 mm
- Focal Length: 350 mm
- Bandwidth: <0.75 Angstrom
- Tuning: air-pressure tuning system "Pressure-Tuner"
- Blocking Filter: B400
- non-rotating Helical focuser
- Tube-ring with 1/4-20 tapped base (standard thread for photo-tripods)
- Length: 37cm
- Weight: 2.1kg
- LS50THa H-alpha Solar Telescope
- B400 Blocking Filter in star-diagonal
- Pressure-Tuner
- Tube ring with 1/4-20 connection for mounting on photo-tripods
- non-rotating Helical focuser
- Instruction manual
| Angular resolution (arc seconds): | 2.8 |
|---|---|
| Aperture ratio: | 7 |
| Batteries required: | No |
| Colour: | white |
| Extended warranty (years): | 2 |
| Eyepiece Barrel Diameter (mm): | 31.7 |
| Field of application [Telescopes]: | Solar observation |
| Focal length (mm): | 350 |
| Focusing system: | 1.25" Helical focuser |
| Full width at half maximum (Angström), less then: | 0.75 |
| Material: | Aluminium |
| Mirror/Lens diam. (mm): | 50 |
| Mount Type [Telescopes]: | Optics without Mount |
| Net Weight total (incl. accessories) (in kg): | 2.1 |
| Telescope filter type: | Solar Filter H-Alpha |
| Total height (mm): | 100 |
| Total length (mm): | 370 |
| Total width (mm): | 170 |
Product and safety instructions
Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede
Contact:
www.bresser.de
www.bresser.de
Warning notes
- Safety instructions: There are certain dangers when observing the sun, regardless of the telescope used. Lunt-Solar-Systems places great emphasis on the safety of their products during manufacture. Your safety is the highest priority, and we ask that you carefully read the telescope manual before beginning solar observation. Please never disassemble the telescope! Never use it if it has been modified or damaged in any way! Always contact our customer service if you have any questions regarding the safety of your instrument. Never look at the sun with an unprotected eye or with a telescope not intended for solar observation! Never leave your telescope unattended while it is pointed at the sun! Other people who are unfamiliar with it might attempt to replace the block filter with another prism, unaware of how critical this filter is for safety. The components of Lunt-Solar-Systems telescopes are not interchangeable with those of other manufacturers. Lunt-Solar-Systems solar telescopes contain several different optical elements that have been precisely adjusted and mounted during manufacture. These systems require no maintenance. Never disassemble the telescope. Doing so will void the warranty, potentially leading to expensive repairs, and may cause future damage to your instrument, compromising your safety! Most Lunt-Solar-Systems telescopes and filters include a very sensitive optical component called an Etalon. These Etalons are built into the system to protect them as best as possible. Countless considerations have been made to ensure the best performance of this "heart" of every system, even under the daily stresses it inevitably faces, such as shocks and vibrations during transport or regular use. Nevertheless, it should never be dropped. Improper use of the telescope can damage the Etalon (not a warranty case) and render the system unusable until repaired. The instrument should always be stored in its original packaging or in the optional transport case (item number 0554010). Like any optical precision instrument, it should be stored in a dry environment. With proper care, you will enjoy your instrument for a lifetime!
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Accessories
BRESSER Messier EXOS 1/EQ-4 Mount
€379.00*
Mount and Tripod. The BRESSER Messier beginners series of telescopes. Within this series you find smaller optics mounted stable on the new BRESSER EXOS 1 mount. This combination means more value for money and puts an end to flimsy beginners scopes which discourage most of the beginners due to small, under engineered mounts. The EXOS 1 with a robust stainless steel tripod bears optical tubes weighing up to 7kg stable for visual observation. The optional motor drive for the RA axis makes usage even more comfortable, so there is no need of manual tracking and the object is kept steadily in the field of view.FEATURES
Stable parallactic mount with fine drive in both axes
Circular bubble level for easy horizontal alignment
Stable height-adjustable stainless steel tripod
Retrofittable with a tracking motor for the right ascension axis
Pole height scale for setting the latitude
Scaled graduated circular rings for easier finding of objects by means of star atlas or planetarium software
Tripod weight: 4.7 kg
Mount weight: 4 kg (without counterweight)
Total weight incl. counterweight: 13.2 kg
SCOPE OF DELIVERYEXOS 1 German equatorial mountstainless steel tube field tripod1 x 4.5 kg counterweight
Pre-order
EXPLORE SCIENTIFIC Twilight I telescope mount with tripod
€299.00*
The Twilight I is a light-to-medium-duty alt-azimuth mount and tripod designed to quickly and easily accept small to medium sized refractors, such as the AR102 + AR127s or ED102mm + ED127, and of course, the ED80mm. Lightweight, fast Newtonians will also match up nicely with the Explore Scientific Twilight I mount. As long as your telescope does not exceed 18 pounds and has a Vixen-Style Universal Dovetail bar for mounting the telescope to the mount head, you are good to go. The Twilight I alt-azimuth mount head is made of powder-coated aluminum and there are worm gears on both axes. The adjustable angle head can be tilted forward or back at a 45° angle to allow more clearance for your telescope so you can point it straight up for viewing at the zenith. The Allen hex wrench for doing the mount head adjustment can be safely stored at the integrated magnetic holder. Slow-motion control cables are attached on the vertical and horizontal axes, and are easy to turn during the night, even with gloves on, due to the over-sized knurled knobs that are attached to the end of each cable. They can be attached to either side of each axis to accommodate right or left-handed users, or different types of telescopes (e.g. refractors vs. Newtonian reflectors) for ease of adjustment. The stainless steel tripod that comes standard with the Twilight I mount has adjustable legs and a wide foot print of 42 inches, which makes the tripod more stable. A spreader bar locks against the inside of the legs to secure the tripod even further, and keep vibrations to a minimum. SCOPE OF DELIVERTwilight I Telescope MountStainless Steel Field tripod
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Vixen Porta II azimuthal mount
€325.00*
The Vixen Porta II is a high-quality azimuthal mount from the award-winning manufacturer Vixen. Featuring an intuitive, versatile and reliable design, the Porta II was specially developed to enable quick and precise telescopic observations along the vertical and horizontal axes without the need for a complex setup. It comes with fine adjustment wheels for fine tuning the position of the telescope to track astronomical objects. It also has a highly portable design thanks to the detachable mount head, which can be quickly detached from the tripod via an M10 screw. In addition, the dovetail mounting system (Vixen standard) ensures maximum compatibility with a wide range of telescopes.
The Vixen Porta II mount in detail
Easy to use
The Porta II does not require a clamp, as it sports a slip clutch that allows you to adjust the mount to your desired object. It also holds its position automatically, making it very easy to use.
Highly portable design
The mount is easy to transport thanks to the Porta II mount head, which can be detached by removing a single screw.
Easy to operateThe Porta II adjustment system allows you to track objects and make fine adjustments using the supplied shafts, which can be repositioned as necessary for optimal viewing comfort.Practical accessory storage
The accessory holder features slots for your eyepieces. It can also be used to store smaller photography accessories. The holder is easy to mount via a centrally positioned screw.
Built-in tool
The mount comes with a tool for adjusting the friction of the slip clutch. The tool is located underneath the rubber cover for easy access.
FEATURES
360° fine adjustment with worm gears2x sprockets with 120 teeth eachNo axle clamp requiredSlip clutch friction systemDovetail system (compatible with the GP and Sphinx mount)
Adjusts by up to 45°
Mounts tubes with an aperture of up to 155 mmPACKAGE CONTENTSVixen Porta II mountAluminium tripod2 fine adjustment wheelsMounting toolStorage shelf for accessories
Available
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Highly corrected 102mm air-spaced triplet apochromat (with three lenses) and carbon fiber tube and a 2.5" high-precision HEXAFOC focuser. Apochromats are the ultimate choice in small to medium sized telescopes: the combination of compactness, transportability, very high image contrast and sharpness together with the possibility to make excellent astrophotos cannot be bested. The advances in glass manufacturing during the last few years have made true apochromats available to more astronomy enthusiasts than ever before. The new Explore Scientific FCD-100 CF Hex represents another major improvement in this field - the overall correction (color and spherical) is setting new standards in this price class. The optical design shows a polystrehl value of 0,97 indicating a level of correction that is absolutely top of the line.This excellent apochromat is a very versatile telescope: the fast f-ratio makes short exposure times possible. The high contrast and sharpness of the image provide breathtaking views of large objects like the North america nebula or the Andromeda galaxy as well as tack sharp planetary images. The telescope is lightweight and compact - the dew shield slides down the tube to minimize size for transportation. Revolutionary glass and precision manufacturing created a telescope that offers observing joy on the highest level. This does not only qualify this telescope as the ideal travel scope, it is also the perfect choice for fast observations and for astrophotography. The excellent 2,5" HEXAFOC focuser with 10:1 reduction is perfect for this - the large inner diameter of 65mm prevents vignetting by the focuser when the telescope is used for astrophotography with large sensors. These very popular EXPLORE SCIENTIFIC Triplet ED APO Refractors we do offer in 3 different product lines:Essential Line: HOYA FCD-1 Glass lens, AL-Tube, 2.0" Rack&Pinion Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112084(AL), 0112106(AL), 0112132(AL)), 0112155(CF + 3"FT)) Professional Line: HOYA FCD-100 Glas lens, AL/CF-Tube, 2.5" HEXAFOC Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112086(AL), 0112108(AL), 0112109(CF), 0112134(AL), 0112135(CF))High-End Line: OHARA FPL-53 Glass lens, Carbon(CF) Tube, 3.0" Feather-Touch Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112165(CF))SPECIFICATIONSAperture: 102mmFocal Length: 714mmFocal ratio: f/7.0Design: Apochromat with three lenses, two air spaces and FCD-100 glassWeigth: 3,3kg , lightweight due to carbon fiber tubeBackfocus: 150mm above 2" adaptorDesign: Apochromat with three lenses, two air spaces and FCD-100 glassSCOPE OF DELIVERYOptical tube with retractable dew-shield2.5" HEX focuser with 1:10 gear reduction 2" Star Diagonal 99% reflectivityTube rings with dovetail plate and handleExtension tubes for focusser (2pcs)Dust caps for front-lens and focuserUniversal finder slot
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National Geographic Microscope 40x-800x - the microscope for big and small! Thanks to the new, innovative Smartphone holder you can also observe and save motifs with a smartphone by taking photos. The microscope not only convinces with its cool design, but also with a lot of accessories, which allows you to get started in microscopy. These include preparations such as yeast and shrimp eggs, as well as cover glasses and microscope slides.The motifs can be enlarged from 40x to a maximum of 800x. In addition, the microscope has an adjustable LED illumination for reflected light and transmitted light microscopy.FEATURESBeginner's microscopeMagnification: 40x-800xObjectives: 4x/10x/40xRed light and transmitted light microscopyIncludes experiment kit for breeding brine shrimp (Artemia) SCOPE OF DELIVERY MicroscopeSmartphone Mount2 Wide Field Eyepieces: WF20x/ WF10xColour filter discBox with specimensStorage containerExperiment kit (magnifier box, brine shrimp eggs, yeast)Preparation setManual
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LUNT LS60MT/B600R&P Multipurpose ED Telescope for Sun + Night-Sky
€1,800.00*
€2,190.00*
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Modular designed multipurpose telescope, both for observing the sun
in the H-alpha wavelength, as well as for night sky observations. Easy
conversion between the different applications with a few simple steps.
Excellent image quality due to 2-lens ED optics with 70mm aperture for
night sky observation, and 60mm usable aperture for H-alpha solar
observation.With innovative air pressure tuning system, high-quality 2 inch (50.8mm) Rack&Pinion (R&P) focuser, and B600 blocking filter.Solar observing in H-alpha:The LS60MT/B600 is a complete telescope for observing the sun in H-alpha light, with 60mm free aperture (no central obstruction) and 420mm focal length.
The H-alpha wavelength is the most impressive way to observe the sun,
showing protuberances at the sun's edge, filaments and flares on the
surface, and much more. An internal Etalon filter achieves a bandwidth of <0.7 Angstrom with the innovative air pressure tuning system Pressure-Tuner.
Tuning is done by slightly changing the air pressure in a pressure
chamber inside the telescope. This changes the refractive index of the
air, making it easy to tune to the H-alpha line. The pressure tuner
guarantees a homogeneous image, without central obstruction, and a
permanently protected Etalon without erosion. A set of collimating
lenses installed in the telescope ensures best performance.Fine adjustment is achieved with a solid 2 inch Rack&Pinion focuser with 10:1 reduction.Blocking-filter is the B600.
The B600 is good for visual solar observing. Also solar imaging is
possible by cameras with small CCD chip. We recommend a LS60MT with
B1200 blocking-filter by using cameras with middle or large sized CCD
chips.The star diagonal in which the blocking filter is installed,
is equipped as standard for 1.25 inch eyepieces and with a T2 camera
connection.Observing the starry night sky:The H-alpha
Etalon system can be removed from the telescope in a few easy steps
thanks to its modular design. The 2-lens ED refractor can then be used
as a normal telescope with 70mm aperture and 420mm focal length for observation and photography of the night sky. The ED Doublet lens will offer an excellent image. It can be used with a standard 2 inch zenith mirror or other accessories at the R&P focuser, the back focus is 135mm.With an additional Amici prism, the telescope can of course also be used during the day for nature and landscape observations.This makes the LS60MT, with its small dimensions and low weight, also an ideal travel telescope for all applications!More applications:With additionally available accessories the LS60MT offers even more possibilities!- Double-StackThe LS60MT telescope can optionally be upgraded with the additionally available double-stack filters LS50FHa or LS60FHa
(part numbers 0550200 and 0550250). These filters will be simply
screwed on the front of the LS60MT, no additional adapters are
necessary. Thereby a bandwidth of <0.5 Angstrom is achieved for
H-alpha solar observation. Therefore much more details on the solar
surface will become visible.- Solar observing in White-LightIf
the H-alpha unit has been removed, of course either a sun filter to be
installed in front of the objective, or a Herschel-wedge at the focuser
can be used to observe the sunspots in White-Light.- Solar observing in Ca-K wavelengthCertainly,
the Ca-K filter modules from Lunt Solar Systems can also be used at the
LS60MT to observe and photograph super-granulation and other effects
visible in this wavelength on the sun.This makes the LS60MT a completely universal usable telescope!FEATURES2-lens ED refractor, FPL-51Aperture: 70mmUsable aperture in H-alpha: 60mm (no central obstruction)Focal length: 420mmBandwidth: internal Etalon with <0.7 AngstromTuning: air pressure tuning system Pressure-TunerBlocking filter: B600 with 1.25 inch and T2 connectionFocuser: Rack&Pinion focuser with 10:1 reductionTube-ring with 1/4-20 tapped base (standard thread for photo-tripods)Weight with H-alpha unit: 3.8kgWeight without H-alpha unit: 2.6kgLength with H-alpha unit and blocking filter: 40cmLength without H-alpha unit: 31cmSCOPE OF DELIVERYLS60MT Multipurpose TelescopePressure-TunerB600 blocking filter in star-diagonal housing2 inch Rack&Pinion focuserTube ring with 1/4-20 connection for mounting on photo-tripodsTransport case (53x33x17cm)Instruction manual
Available
