DayStar Filters QUARK H-Alpha Eyepiece Solar Filter (Chromosphere)

BH #DADSZ4C • MFR #DSZ4C
DayStar Filters
DayStar Filters QUARK H-Alpha Eyepiece Solar Filter (Chromosphere)
Key Features
  • 656nm H-Alpha Filter with 12mm Blocking
  • Tuned for Chromosphere Viewing
  • Use Astronomical OTAs for Solar Viewing
  • ±0.5Å Wing Shift Tuning
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Daystar Filters designed this version of the QUARK H-Alpha Eyepiece Solar Filter specifically for viewing chromosphere details. The chromosphere's surface structure behaves differently in active regions than quiet areas, where magnetic field lines are stronger, so viewing this portion of the sun provides a constantly-changing observational experience.
Special Order
Expected availability: 3-5 weeks
$1,195.00
$100/mo. suggested payments.*
with 12 Mos. Promo Financing
SAFETY FIRST: Observing the Sun without the proper protection may result in serious personal injury, including permanent eye damage and blindness, and/or damage to equipment. Never point an optic at the sun without an approved solar filter on the front of the optic. For direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder, ensure your filter is ISO 12312-2 (also written as ISO 12312-2:2015) certified. Never use photographic neutral density filters for direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder.

Jacob K., B&H Optics Expert

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DayStar Filters DSZ4C Overview

  • 1Description
  • 2Filter Properties
  • 3Optics
  • 4Recommended OTA Specifications
  • 5Power

Daystar Filters designed this version of the QUARK H-Alpha Eyepiece Solar Filter specifically for viewing chromosphere details. The chromosphere's surface structure behaves differently in active regions than quiet areas, where magnetic field lines are stronger, so viewing this portion of the sun provides a constantly-changing observational experience.

This all-in-one hydrogen-alpha filter is engineered to eliminate unnecessary components which reduced the size and weight, and enabled it to fit in a compact form factor that simply inserts into 1.25" or 2" diagonals and accepts 1.25" eyepieces. This design enables the use of nighttime telescopes for solar viewing. In addition to the tunable H-alpha filter, the Quark also functions as a 4.3x Barlow lens, with a 2-element lens system designed to be telecentric which flattens the field of view and reduces parallax, and optical coatings that are optimized for the 656nm H-alpha wavelength.

While there are no OTA aperture limitations, Daystar recommends the use of UV/IR cut filters or front-mount energy rejection filters on OTAs over 80mm of for long-duration solar viewing sessions. For best results, they suggest using refractor-style scopes with focal ratios between f/4-f/8, and you can enjoy full-disk viewing with focal lengths up to 450mm. The filter is powered via a micro-USB port, and Daystar includes a power cord and an AC adapter to meet the high-power requirements of 5 VDC 1.5A. To enable its use at home and abroad, a set of international outlet plugs is provided with adapters for the US, UK, EU, and Australia.

Filter Properties

  • Hydrogen-alpha bandpass
  • Integrated 12mm blocking filter
  • 21mm clear filter aperture
  • Tuned to 0.5-0.3Å for viewing chromosphere details
  • Tuning knob allows for ±0.5Å wing shift for Doppler-shift compensation
  • Markers at every 0.1Å for reference and repeatability
  • LED indicators for power, warming, ready, and fault

Optics

  • Integrated 4.3x Barlow lens
  • Lens and optical coatings designed specifically for 656nm H-alpha wavelength
  • Two-element telecentric lens design keeps light waves parallel to flatten the field of view and reduce parallax as magnification increases

Recommended OTA Specifications

  • No aperture limitation
  • Best performance with f/4-f/8 refractors
  • Full-disk viewing on refractors up to 450mm focal length
  • For apertures over 80mm (3.1"), or for long-duration solar viewing, an UV/IR cut filter should be used for energy rejection
  • Not suited for off-axis applications

Power

  • 5 VDC, 1.5A micro-USB port
  • 90-240 VAC wall adapter
  • Set of international outlet plugs for US, UK, EU, and Australia
UPC: 702730990728

DayStar Filters DSZ4C Specs

TypeHydrogen-Alpha
Filter Factor0.5 - 0.3 Å
ApplicationChromosphere viewing
SizeDrawtube side: 1.25"/2"
Eyepiece holder: 1.25"
Multi-CoatedYes
Power Requirement5 VDC, 1.5 A
ConstructionAluminum alloy
Dimensions5.7 x 2.8 x 2.2" / 14.6 x 7.1 x 5.5 cm
Packaging Info
Package Weight2.02 lb
Box Dimensions (LxWxH)10.75 x 4.35 x 4.15"
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