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Accessories - Double Stack Filter For Lunt 80mm & 100mm Modular Telescopes
Accessories - Double Stack Filter For Lunt 80mm & 100mm Modular Telescopes

Double Stack Filter For Lunt 80mm & 100mm Modular Telescopes

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Regular price
$1,695.00 You save 6%
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Estimated Arrival: Between May 24 and May 30. *ETA to USA Only

Shipping & Returns: Satisfaction guaranteed 30 day return policy.

Current lead time is less than 2 weeks
  • Add an internal double-stacking module to the New Lunt LS80MT or LS100MT telescopse for a lowered bandpass of <0.5 Angstroms!
  • The SFPT Double Stack Unit includes a pressure tuner for true Doppler tuning.
  • Add the SFPT at the time of order, or add it to an LS80MT or LS100MT you already own, no trip back to the factory required!

Double stacking provides a truly enhanced, high definition view of the Sun’s surface details. Notably, it lowers the bandpass of the system from <0.7 Angstrom to <0.5 Angstrom, which really makes the surface “pop”!

The Lunt LS80MT and LS100MT can be internally double-stacked at the time of purchase or anytime thereafter.  Furthermore, neither telescope module will need to be returned to the factory for double-stacking.

You can purchase the LS80MT or the LS100MT single stack modular telescope initially and add the SFPT to make it a double stack unit later.  This will make it more affordable to purchase our a new modular telescope and still have room for upgrades.  Once you upgrade your Lunt Modular Telescope with the double stack unit, you will be able to see the finer details not previously visible.



7 lbs
Dimensions 16 × 16 × 12 in
Item Number


We know that once you've placed your order, you are anxious to receive it! We make every effort to get your order shipped out to you as quickly as possible.

As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase. We will process the charges to your credit card and your order will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at

Standard shipping time in the US is between 3-5 business days, though it can vary slightly depending on the destination. We typically For updates on your shipment you can enter your tracking number here.

We distribute nationwide via UPS and Fedex. Unfortunately, at this time we are not able to provide expedited or international shipping.