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Heliostar 100 H-Alpha telescope

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$5,995.00
SKU S11325

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Sky-Watcher’s Heliostar H-alpha Solar Telescopes offer a dedicated solar viewing experience to the lineup. Hydrogen-alpha solar observing allows you to unlock the incredible dynamics of the surface of the Sun far beyond what a white light solar filter can deliver.

Double the Fun

Heliostar provides incredible double stack performance for the price of one etalon filter. There is no need for costly double stack systems, Heliostar Ha is tuned to <0.5Å natively providing rich surface detail with its 76 and 100mm apertures, delivering high resolution viewing and imaging.

Hydrogen Alpha Technology

Hydrogen Alpha solar telescopes are specialized instruments used to observe the Sun in a specific wavelength of light—656.3 nm—which corresponds to the emission line in the “A” alpha absorption band of the Balmer series. This wavelength is critical for studying solar phenomena and specific solar activity in the chromosphere, a layer of the Sun’s atmosphere located just above the photosphere

FEATURES

  • Double stack performance, single stack price
  • 76mm or 100mm aperture
  • Official solar telescope of the Charlie Bates Solar Astronomy Project
  • Integrated solar finder, tube rings, and carry handle
  • Integrated Trifid Tuner and Solis Etalon Technology
  • <0.55Å bandpass
  • H-alpha fully-multicoated lens
  • Achromatic doublet design
  • 11:1 dual-speed focuser
  • 1.25-inch diagonal format blocking filter


Optical Specifications
Optical Design (achro or apo) Achromatic
Lens Coating (fully multi-coated)? H-alpha fully multicoated
Lens design (doublet, triplet or Quad) Doublet
Optical Quality Diffraction limited (1/4 wave)
Collimatable Cell No (Self Aligning Cell)
Primary Aperture (mm) 100mm
F/Ratio 7.6
Focal Length (mm) 760mm
Blocking Filter Size 20mm
Solar Image Size 7.6mm
Bandpass < 0.55Å
Mechanical Specifications
Focuser Type Crayford
Focuser Size 2"
Focuser: Dual or Single Speed Dual speed
Compression Ring No* (Only on diagonal)
OTA material Aluminum
Optical Tube length (inches) 30"
Optical Tube weight (pounds) 13.2 pounds
Mounting Rings? Mounting Rings
Dovetail type V-style
Accessories
Eyepieces 22mm 70º 1.25" eyepiece
Diagonal 20mm 1.25" H-alpha blocking diagonal
Camera Adapter No
Additonal Accessories Sun shade & 2" adapter
Included finder Heliostar solar finder
Manual Digital PDF
Case Yes
Observational Info
Dawes Limit 1.16
Rayleigh Limit 1.4
Limiting Magnitude 12.48
Minimum Magnification 14x
Maximum Magnification 197x
Magnification with included eyepieces 35x
Light Gather (compared to next size down) 73% compared to Heliostar 76Ha
Intended use Solar (visual & Imaging)