The Lunt LS130MT with B1200 blocking filter is a versatile hydrogen-alpha solar telescope designed for visual observers who want the perfect balance of aperture, performance, and portability. Built around a premium 130mm FPL-53 ED triplet and Lunt’s pressure-tuned etalon system, the LS130MT offers stunning resolution and contrast for solar observing—plus full capability for nighttime use.
This configuration includes a 2" B1200 blocking filter, making it an excellent choice for dedicated visual solar observers who want to see the Sun's dynamic surface and limb phenomena in brilliant detail, without the added expense of a larger blocking filter more suited for imaging or long focal length applications.
Why Choose the B1200 Blocking Filter?
The B1200 provides a 12mm clear aperture at the focal plane. For the LS130MT’s 910mm focal length, this is more than enough for unvignetted visual observing across the full solar disk. It’s the ideal choice for observers using standard 1.25" or 2" eyepieces, offering sharp, contrast-rich views of prominences, filaments, sunspots, and active regions without unnecessary bulk or added cost.
If you're planning to primarily observe rather than image—and you want the light-gathering benefits of a 130mm aperture with a compact and manageable setup—the B1200 version is your sweet spot.
Large-Aperture Optical Excellence
The LS130MT features a 130mm f/7 FPL-53 ED triplet lens for exceptional color correction and detail resolution. The large aperture increases contrast on faint chromospheric detail, enhances prominence visibility, and improves edge sharpness across the solar disk. It's also excellent for lunar, planetary, and deep-sky viewing when used in nighttime mode.
Observing Tip:
A 130mm aperture lets you push magnification farther than smaller scopes on steady days. Use a green filter or solar-optimized eyepiece to increase surface contrast. And remember—give the scope 20–30 minutes to thermally stabilize for the best visual results.
Solar Tuning with Precision
Unlike tilt-tuned systems that can produce uneven field illumination, the LS130MT uses Lunt’s internal pressure-tuning technology. This approach shifts the observed wavelength by adjusting air pressure inside the etalon chamber—allowing you to “tune” the view to highlight specific solar features with uniform brightness and clarity across the entire field.
Important Safety Warning:
Never look at the Sun through this telescope—or any telescope—without the hydrogen-alpha etalon and blocking filter properly installed. Permanent eye damage or blindness will result. The telescope must be used exactly as designed for safe solar observing.
Dual-Use Modularity
The LS130MT is designed to transition effortlessly from daytime to nighttime use. After solar observing, the etalon and blocking filter assembly can be removed, and the included nighttime focuser installed in its place. You now have a 130mm f/7 ED triplet refractor capable of capturing sharp detail on the Moon, planets, and deep-sky targets. The optical quality carries over beautifully from one mode to the other.
Mechanical Features
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130mm FPL-53 ED triplet objective
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910mm focal length (f/7)
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Internal pressure-tuned hydrogen-alpha etalon
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2" B1200 blocking filter in diagonal
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Modular rear assembly for solar and night use
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Rack and Pinion focuser
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Hinged tube rings with Vixen-style dovetail and solar finder handle
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Custom foam-lined hard carry case
What’s Included:
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Lunt LS130MT 130mm ED triplet optical tube
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Internal pressure-tuned etalon system
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2" B1200 blocking filter in diagonal housing
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Modular rear focuser assembly for nighttime use
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Mounting rings and dovetail plate with integrated solar finder
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Foam-lined hard case for protection and transport
