Lunt Internal Double Stack Module

• Preorder notice: ships 30–60 days after checkout (estimated window)

• Transform your Lunt scope into a high-definition H-alpha machine—double stacking narrows the bandpass so surface detail truly pops

• LFPT module (for 130 mm & 152 mm): tightens system bandpass from <0.65 Å to <0.45 Å for crisp filaments, plage, and fine-scale texture

• SFPT module (for 80 mm & 100 mm Universal Day & Night): narrows from <0.7 Å to <0.5 Å for a dramatic contrast boost across the disk

• Upgrade anytime: install at purchase or later—no factory return required—so you can start single-stack and add DS when ready

• Designed as an internal, matched optic: preserves balance, keeps the rig compact, and maintains even field illumination

• Ideal for serious visual and imaging workflows where micro-contrast and tonal separation reveal hidden structure

• A cost-effective path to “observatory-grade” views—add the DS module now or later as your needs evolve

Specifications

• Product Type: Internal double stack (DS) module

• Compatibility:

  • LFPT: Lunt 130 mm and 152 mm H-alpha telescopes

  • SFPT: Lunt 80 mm and 100 mm Universal Day & Night telescopes

• Resulting Bandpass:

  • LFPT: from <0.65 Å (single) to <0.45 Å (double)

  • SFPT: from <0.7 Å (single) to <0.5 Å (double)

• Installation: Internal module; user/dealer installable; no factory return

• Use Cases: Visual high-contrast observing; high-resolution imaging of filaments, mottling, and limb detail

• Availability: Preorder; estimated shipping 30–60 days after checkout

What’s in the Box?

• Lunt Internal Double Stack Module (select SFPT 80/100 or LFPT 130/152)

• Basic installation and operating guidance