60mm Double stack,12mm BF Pressure tuning,CF

60mm Double stack,12mm BF Pressure tuning,CF

FEATURES:

  • New, patented etalon technology and different components.
  • Given to less thermal disturbances and decontacting.
  • Stylized pearl white paint with black anodized trim.
  • Clamshell mount, 10:1 Crayford focuser and padded hard case included!

DESCRIPTION:

      Enjoy rarely-seen views of the Sun's surface and rim with the Lunt Solar Systems' 60mm f/8.3 Hydrogen-Alpha Double-Stacked Etalon Refractor Solar Telescope. This dedicated solar scope features a 60mm objective lens , a 500mm focal length, and an internal etalon with a <0.75 Angstrom band pass. The scope is offered here as a double-stacked system with an internal etalon and removable external front etalon that reduces the band pass to <0.5 Angstrom for increased contrast and enhanced views of the seething caldron of the surface and rim activity. It comes with a 12mm blocking filter in a star diagonal configuration that fits in the Crayford-style focuser and accepts 1.25" eyepieces and accessories for visual observation with a wide field of view, or imaging. Its dual-speed Crayford-style focuser uses a toothless friction system that allows for super-fine precision focusing without backlash. This solar scope comes without a mount or tripod, but is outfitted with a mounting base that has a 1/4"-20 threads for attaching it to most tripods or compatible mounts. For safe transportation and storage, two foam-lined hard carrying cases are included, one for the OTA and a smaller one for the front filter.

Optical Performance

  • 60mm aperture
  • f/8.3 focal ratio
  • 500mm focal length
  • Refractor-style optical path
  • Internal etalon with tune adjustment allows for a <0.75 Angstrom bandpass at 656nm$
  • Removable front etalon lowers bandpass to <0.5 Angstrom for rich contrast and enhanced surface details
  • True Doppler pressure tuning allows for a shift into and away from the user for enhanced viewing

Blocking Filter

  • 12mm aperture
  • Use for visual observation with a larger field of view, or imaging
  • Fits into focuser and accepts 1.25" eyepieces
  • Star diagonal configuration

Focuser

  • 2" diameter
  • Crayford-style design
  • Dual-speed with 10:1 fine-tuning for precision focusing
  • Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
  • Aperture- 60mm
  • Emission line- H-alpha
  • Blocking or ERF aperture- 12mm
  • Bandwidth- <0.5 Angstrom at 656 nm
  • Telescope Focal Length- 500mm
  • Focuser- 2” Crayford style
  • Focal ratio- f/8.3
  • Included tuner
  • Optical tube weight- 3.99 kg