Lunt 100mm Pressure-Tuned f/7 Solar Telescope w/ B1800

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  • Regular price $5,077.00

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Lunt 100mm Pressure-Tuned f/7 Solar Telescope w/ B1800

This refractor-based system starts off with a precision aligned ED doublet lens with a 100mm aperture. The front singlet lens reduces half of the stray light of an achromat and it fully eliminates the possibility of an on axis coma, astigmatism, de-centering aberrations. It provides with the matched collimation lens set a full spherical corrected flat-field.

Inside this custom-made refractor, you'll find an internal etalon with tune adjustment which allows for a maximum of <0.75 Angstrom bandpass. You'll get a sharp, crisp ~7.3mm image through its a 18mm blocking filter, revealing excellent details on both the solar surface, limb edge, flares and prominences.

Lunt Solar Systems LS100 Hydrogen-Alpha Telescope Features

  • New, patented etalon technology and different components.
  • Prone to less thermal disturbances and decontacting.
  • Stylized pearl white paint with black anodized trim.
  • Clamshell mount, 10:1 Feather Touch focuser and padded hard case included!
  • Pressure Tuner for true Doppler tuning!
  • Full warranty from Lunt Solar Systems.


Bandwidth<0.75 A
Blocking/ERF Aperture18mm
Emission LineH Alpha
ManufacturerLunt Solar
Optical DesignSolar
Solar Finder IncludedYes
Tuner IncludedYes
Warranty5 Year Warranty
Customer Reviews
5.0 Based on 2 Reviews
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Lunt 100

The scope performed just as described. Some of my initial pics were textbook quality with little or no effort!

Heaven in a solar scope, but heavy.

I recently observed through a friend's Lunt 100mm scope, side by side with my 60mm double-stack from the competition. I also had my old 40 mm h-alpha filter from the competition. At first I looked through my 60mm, and the improvement from the old 40 was so great, that I didn't think one could do better. I was wrong. Though I'm happy with that 60mm scope (and got good video of the Venus transit with it, this Lunt 100 mm was on another plane altogether. Surface and prominence detail were easily visible sumultaneously. The prominences, to quote the scope's owner, looked like those giant trees on the African savanna--the detail was breathtaking, and one could see fine details within the prominences reminding me of the complex branches of those huge trees. Despite this being only a single-stack scope, the visual contrast seemed to exceed that of my double-stack. One downside is the weight (too large to carry around the neighborhood to dodge trees while still attached to a lightweight mount, unlike my 60mm--this is NOT an easy grab-and-go scope. Also, the Sun's disk is large enough that currently available video cameras, such as the DMK51, can't quite fit it all on the chip at once (but that large image scale is also needed to bring out the amazing detail visible with this scope. The Lunt pressure tuner worked well. At first, my friend wondered whether the scope was broken--he had to twist the adjustment knob very hard to reach the right amount of pressure, but once the scope was tuned, it was just Nirvana. So, if you want a lightweight scope that you can hand-carry outside for a quick 20-minute look at the Sun, get something smaller, or buy a decent mount and some Wheely Bars to roll this one outside. However, if you want views of the Sun that will make you smile with the first view and every view thereafter, because you are reminded with each view that you bought quality equipment, this is the scope. Who knew that giant African trees grew on the edge of the Sun?