LUNT O-ring for Pressure-Tuner at LS50THa solar telescopes

  • Spare part, not usable separately
  • Only for LS50THa telescopes from Lunt Solar Systems
  • For LS50THa/B400 and LS50THa/B600

€5.00*

Available, delivery time: 1-3 days

Product number: 0558320
EAN: 4007922072944
WEEE-Reg.-Nr.: DE 34323861

With BRESSER, you can enjoy a smooth introduction to the vast world of astronomy. Our detailed information ("Telescope Guide") provides valuable tips for beginners—but even experienced astronomers can use the information we provide (e.g., tables for the geographical latitude of all major world cities) as a reference.

Here is the table of contents of the comprehensive BRESSER Telescope Guide:

Sky Guides von Bresser

Der Sky Guide bietet umfassende Informationen zu Sternbildern, Planetenpositionen und astronomischen Ereignissen – ideal, um Ihre Beobachtungen zu planen und noch tiefer in die Astronomie einzutauchen. 
Besuchen Sie den Guide direkt hier, um das Beste aus Ihren Beobachtungen herauszuholen!
Product information "LUNT O-ring for Pressure-Tuner at LS50THa solar telescopes"
​Spare part for Pressure-Tuner of LS50THa H-alpha solar telescopes from LUNT SOLAR SYSTEMS

A rubber O-ring is installed into the Pressure-Tuner of Lunt Solar Systems LS50THa solar telescopes to seal the air-pressure tuning system. Over time, the rubber of this O-ring can age and become porous, whereby the air-pressure can then no longer be maintained. When this happens, the old O-ring can be replaced by this spare part. The replacement is simple and can be done by the user. Installation instructions can be found here under the tab "Manuals" as a PDF for download.

After replacing the O-ring, the piston and cylinder of the Pressure-Tuner can be re-greased with grease available under part number 0558350.

Please note that this spare part can only be used on the Lunt Solar Systems LS50THa H-alpha solar telescopes. If the problem occurs on the larger THa or MT series telescopes, the larger O-rings with part numbers 0558330 or 0558340 must be used there.

FEATURES
  • Inner-diameter: 31mm
  • Outer-diameter: 39mm
  • Cannot be used separately, only as a replacement part on the Pressure-Tuner of the LS50THa telescopes from Lunt Solar Systems.
  • It does not matter what blocking filter is at the LS50THa

SCOPE OF DELIVERY
  • Spare part one O-ring for pressure tuner of LS50THa


Colour: red
Material: Rubber

Accessories

LUNT Grease for Pressure-Tuner at MT & THa solar telescopes
Spare part for Pressure-Tuner of MT and THa series H-alpha solar telescopes from LUNT SOLAR SYSTEMSFor example, if the O-rings have been changed on a Pressure-Tuner of a Lunt Solar Systems H-alpha solar telescope, the Pressure-Tuner can be re-greased with this grease. The grease can be applied to the piston with the O-rings and to the threads of the brass cylinder on the Pressure-Tuner. It keeps the Pressure-Tuner running smoothly and seals it.Please note:Do not use too much grease inside the brass cylinder. The grease must not get into the air passage at the bottom of the brass cylinder, otherwise the Etalon could be damaged in the worst case.FEATURESLithium grease with Teflon contentVery good sealing propertiesHigh adhesion and good corrosion protectionTemperature stable from -20 to +120° CelsiusConstant viscosity during temperature fluctuationsSCOPE OF DELIVERYSpare part: Grease for Pressure-Tuner of MT and THa H-alpha solar telescopes from Lunt Solar Systems

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Geschenkgutschein über 50€
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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.FEATURESAperture: 50  mmFocal Length: 350 mmBandwidth: <0.75 AngstromTuning: air-pressure tuning system "Pressure-Tuner"Blocking Filter: B400non-rotating Helical focuserTube-ring with 1/4-20 tapped base (standard thread for photo-tripods)Length: 37cmWeight: 2.1kgSCOPE OF DELIVERYLS50THa H-alpha Solar TelescopeB400 Blocking Filter in star-diagonalPressure-TunerTube ring with 1/4-20 connection for mounting on photo-tripodsnon-rotating Helical focuserInstruction manual

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LUNT LS50THa/B600PT 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 B600 blocking filter is installed inside the star diagonal. The B600 offers a larger field of view than the smaller B400 and is very good for visual solar 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.FEATURESAperture: 50  mmFocal Length: 350 mmBandwidth: <0.75 AngstromTuning: air-pressure tuning system "Pressure-Tuner"Blocking Filter: B600non-rotating Helical focuserTube-ring with 1/4-20 tapped base (standard thread for photo-tripods)Length: 37cmWeight: 2.1kgSCOPE OF DELIVERYLS50THa H-alpha Solar TelescopeB600 Blocking Filter in star-diagonalPressure-TunerTube ring with 1/4-20 connection for mounting on photo-tripodsnon-rotating Helical focuserInstruction manual

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Spare part for Pressure-Tuner of MT and THa series H-alpha solar telescopes from LUNT SOLAR SYSTEMSTwo rubber O-rings are installed into the Pressure-Tuner of Lunt Solar Systems solar telescopes to seal the air-pressure tuning system. Over time, the rubber of this O-rings can age and become porous, whereby the air-pressure can then no longer be maintained. When this happens, a old O-ring can be replaced by this spare part. The replacement is simple and can be done by the user. Installation instructions can be found here under the tab "Manuals" as a PDF file for download.Please be sure to note:Depending on the production series, the diameters of the Pressure-Tuner pistons can vary slightly. There are pistons for O-rings with 32mm inner diameter and 40mm outer diameter, and pistons for O-rings with 34mm inner diameter and 42mm outer diameter. Please check the diameter of your old O-rings, this spare part is an O-ring with 32mm inner diameter and 40mm outer diameter.If you need the larger O-ring with 34mm inner diameter and 42mm outer diameter, this is the spare part with item number 0558340.The LS50THa telescopes have Pressure-Tuners with smaller diameters, for these you will need replacement O-rings with item number 0558320.After replacing a O-ring, the piston and cylinder of the Pressure-Tuner can be re-greased with grease available under item number 0558350.FEATURESInner diameter: 32mmOuter diameter: 40mmCannot be used separately, only as a replacement part on the Pressure-Tuner of MT and THa telescopes from Lunt Solar Systems.It does not matter what blocking-filter is at the MT or THa telescope.SCOPE OF DELIVERYSpare part one O-ring with 32mm inner diameter and 40mm outer diameter for Pressure-Tuner of MT and THa H-alpha solar telescopes from Lunt Solar Systems

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