DayStar Filters Quantum H-Alpha Bandpass Filter (0.7Å, Standard Grade)

BH #DA7QSE • MFR #.7QSE
DayStar Filters
DayStar Filters Quantum H-Alpha Bandpass Filter (0.7Å, Standard Grade)
Key Features
  • Hydrogen-Alpha Solar Filter
  • For Amateur and Limited Research Use
  • Greatly Enhances Prominence Contrast
  • Anti-Reflection Coated BK7 Glass
The Daystar Filters' 0.7Å bandwidth Quantum H-Alpha Bandpass Filter reveals prominences, a detail of the chromosphere projected against the blackness of space, in high contrast; and under the right conditions, surface texture. Through a 0.7Å filter prominences appear larger than when viewed with narrower bandwidth filters. The filter is installed at the rear of the OTA, rather than before the primary objective so it can be used on telescopes of virtually any aperture and easily moved between a variety of scopes.
Special Order
Expected availability: 3-7 business days
$4,025.00

DayStar Filters Quantum H-Alpha Bandpass Filter (0.7Å, Standard Grade)

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.

Patrick F., B&H Optics Expert

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DayStar Filters .7QSE Overview

The Daystar Filters' 0.7Å bandwidth Quantum H-Alpha Bandpass Filter reveals prominences, a detail of the chromosphere projected against the blackness of space, in high contrast; and under the right conditions, surface texture. Through a 0.7Å filter prominences appear larger than when viewed with narrower bandwidth filters. The filter is installed at the rear of the OTA, rather than before the primary objective so it can be used on telescopes of virtually any aperture and easily moved between a variety of scopes.

The filter comes calibrated for the H-alpha wavelength at 6562.8Å and using the electronic tuning system, which is accurate to 0.1Å, the wavelength can be offset as much as 1.0Å in either direction for Doppler shift compensation and to highlight specific areas. The Quantum is outfitted with an RS-232 serial port that allows it to be connected to a computer and enables remote viewing of the wavelength display and control of the tuning. It runs on 12 VDC power and comes with a 6' power cord and a set of international outlet plugs for US, EU, UK, and Australia.

UPC: 702730990117

DayStar Filters .7QSE Specs

ApplicationSolar viewing
TypeHydrogen-Alpha
Bandpass0.7 Å
Wavelength6562.8 Å
± 1.0 Å offset capability for Doppler shift observation
Multi-CoatedYes
Power Requirement12 VDC
Environmental Limits32 - 104°F / 0 to 40°C
Humidity: 20 - 80%, non-condensing
DimensionsDiameter: 3.0" / 7.6 cm
Length: 1.7" / 4.3 cm
Length with filter mounting plates: 2.2" / 5.6 cm
Weight16.0 oz / 453.6 g
Packaging Info
Package Weight9.3 lb
Box Dimensions (LxWxH)17.2 x 13.3 x 7.6"
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