Hydrogen-alpha solar telescopes from 40mm to 230mm, etalon filter sets to convert a refractor you own, and the accessories that go with them.
Choose The Right Blocking Filter Aperture A Lunt blocking filter is required with every Lunt hydrogen alpha etalon or telescope...
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Turn Your Refractor Into A Solar Scope This 40mm center obstructed H-alpha set from Lunt mounts over the centre of your existin...
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One Hundred Millimetre Solar Etalon Filter Set This 100mm full aperture H-alpha etalon package from Lunt is the largest front m...
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The Largest Modular Solar Telescope Lunt Builds The Lunt 130mm Solar Ready Kit is the largest modular solar telescope in the Lu...
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Solar by Day, Deep Sky by Night The Lunt LS100MT gives you two telescopes in one tube. A 100 mm professional grade APO triplet ...
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Black Anodized Vixen Bars For Every Scope Length This Vixen style dovetail bar from Lunt mates your solar telescope to any moun...
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Erect Image Views For Daytime Terrestrial Use These are 1.25 inch prism diagonals that Lunt supplies for daytime and terrestria...
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Grab And Go Hydrogen Alpha In Three Trims The Lunt 40mm Solar Ready Kit builds every trim around the LS40THa optical tube, a 40...
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Rear Plate And Focuser For LS152THa Scopes The LS152T/BP&F is the backing plate and two inch Crayford focuser assembly for ...
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Cut Background Glow In Double Stack Systems The High Resolution Glass upgrade is an optional element for a Lunt internal double...
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Protect Your Solar Telescope In Storage And Transit The Lunt Hard Carry Case gives your solar telescope a rigid, protective hom...
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Connect Eyepieces And Blocking Filters With Confidence Lunt builds two small machined adapters that solve the most common fit p...
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Observatory Class Aperture You Can Still Carry The Lunt 100mm Solar Ready Kit brings observatory class aperture to a tube you c...
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Sixty Millimetres Of Unobstructed Hydrogen Alpha This 60mm full aperture H-alpha etalon package from Lunt places a 60mm tilt tu...
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Eighty Millimeters Of Day And Night Aperture The Lunt LS80MT builds a universal day and night telescope around an 80 mm FPL53 E...
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Extra Airline Length For Remote Tuner Placement The PC-USB extension hose is the airline that connects a Lunt PC-USB pressure t...
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Higher Contrast For Dedicated Lunt Solar Telescopes A dedicated Lunt hydrogen alpha telescope already reaches 0.7 Angstrom or b...
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Dial In Comfortable Brightness For Visual Solar Viewing This polarizing filter unit from Lunt pairs with a Lunt White Light Sol...
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Precision Focus Control For Lunt Solar Scopes Lunt offers a focuser to match nearly every one of its solar telescopes, from a c...
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Eighty Millimeters Of Serious Chromosphere Resolution The Lunt 80mm Solar Ready Kit is built on the LS80MT, an 80mm ED doublet ...
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Computer Controlled Pressure Tuning For Remote Solar Imaging This PC-USB pressure tuner from Lunt replaces the manual pressure ...
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One Tube For Sun, Moon And Stars The Lunt LS60MT is a universal day and night telescope built on a professional grade FLP51 ED ...
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Full Aperture 50mm Etalon For Your Refractor This 50mm full aperture H-alpha etalon package from Lunt puts an unobstructed 50mm...
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Safe White Light Views Of The Photosphere This white light solar wedge from Lunt is a Herschel design that diverts the vast maj...
View full detailsMost telescope manufacturers treat solar as a sideline. Lunt do nothing else. Every etalon, blocking filter and pressure tuner they build exists to do one job — put the hydrogen-alpha Sun in front of your eye safely and in as much detail as the aperture allows.
The range runs from the 40mm LS40THa, which will show you prominences on the limb from a suburban garden, up to the LS230THa double stack, an instrument built for observatories. In between sit the MT universal telescopes that work on the Sun by day and deep sky at night, and the filter sets that convert a refractor you already own.
Solar filtering is not a place to improvise. Everything on this page is a purpose-built Lunt product, and we will tell you honestly whether a filter set fits your telescope before you order it.
An improvised or ill-fitting solar filter is not a cosmetic problem. Every product here filters the light at the front of the telescope or inside a sealed etalon module built for the purpose.
Send us your telescope model before you order a filter set and we will confirm the fit. If it does not fit, we will say so rather than sell it to you. Call +1 (855) 501-0541.
Lunt build nothing but solar instruments, and it shows in the detail the etalons resolve.
Barometric tuning shifts the passband evenly across the whole disk rather than across a tilted wedge.
Tell us your telescope and we check the filter set against it first.
Every Lunt product on this page ships free within the United States.
Three families, plus the accessories that go with them. Counts are what we have in stock today.
Complete hydrogen-alpha instruments with the etalon built in, from 40mm to 230mm.
Convert a refractor you already own, or add a double stack to sharpen a telescope you already have.
Solar-tuned eyepieces, binoviewers, SunLock finders, pressure tuner controllers and hard cases.
The models people choose between most often. Prices are the lowest configuration on this site.
| Model | Aperture | Type | Best for | From |
|---|---|---|---|---|
| LS50THa | 50mm | Dedicated H-alpha | A first dedicated solar scope | From $995.99 |
| LS60MT | 60mm | Universal day and night | One telescope for Sun and sky | From $1,195.99 |
| LS80MT | 80mm | Universal day and night | Finer filament detail, ED at night | From $2,595.99 |
| LS100MT | 100mm | Universal day and night | Serious aperture, still portable | From $4,195.99 |
| LS152THa | 152mm | Dedicated H-alpha | Research-grade surface detail | From $7,849.99 |
Aperture sets resolution on the Sun exactly as it does at night. Bandpass — how narrow the etalon is — sets how much surface contrast you see.
Which route suits you depends on what you already own.
The simplest path. The etalon is built in and nothing needs to fit anything else.
Jump to these →A full aperture etalon filter set turns a night-sky refractor into a solar instrument.
Jump to these →The MT series works in hydrogen-alpha by day and as an ED refractor after dark.
Jump to these →Grouped by what it is. Everything here is in stock.
The questions we field most often on the phone.
No. An unfiltered telescope aimed at the Sun concentrates enough energy to cause permanent eye injury in a fraction of a second, and it will destroy an eyepiece or a camera sensor just as fast. Every product on this page filters the light before it reaches you.
Lunt shift the etalon's passband by changing the air pressure inside the housing rather than by tilting the glass. Tilting moves the tuning across the field, so one edge of the disk is tuned and the other is not. Pressure tuning keeps the whole disk evenly tuned, which is why filaments and surface texture come up cleanly.
B600, B1200, B1800 and B3400 refer to the diameter of the blocking filter in microns. A larger blocking filter passes a larger fully illuminated field, which matters as aperture and focal length increase, and for imaging with a larger sensor. Bigger is not always necessary — it is matched to the telescope.
If it is a refractor, usually yes, with a full aperture etalon filter set sized to the front of the tube. Send us the make, model and the outside diameter of the dew shield and we will confirm which set fits before you order.
A single stack shows prominences on the limb and the larger active regions clearly. A double stack narrows the bandpass further and brings up filaments and surface texture across the disk. If your main interest is the disk rather than the limb, the double stack is the upgrade that matters.
Solar observing crosses several categories. These are the pages for each.
13 purpose-built models
9 filters and etalons
Binoviewers, finders, diagonals
Helical and rack-and-pinion
5 cases
The night-sky range
How to choose your first telescope
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