Designed specifically for Questar telescopes, but similar to their standard Quark, Daystar Filters Questar Quark H-Alpha Eyepiece Solar Filter is outfitted with Questar-specific eyepiece and rear port threads to install quickly and easily, without adapters, directly into your OTA.
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 threads onto either port and accepts standard 1.25" eyepieces. It is tuned specifically for viewing prominences. Prominences, a detail of the chromosphere projected against the blackness of space behind the sun, are seen with improved contrast due to the filter s narrower bandpass versus a wider bandpass filter tuned for conventional chromosphere surface viewing.
While there are no OTA aperture limitations, Daystar recommends the use of front-mount aperture-reducing off-axis energy rejection filters. 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 25mm blocking filter
- 21mm clear filter aperture
- Tuned to 0.8-0.6 & for viewing prominences
- Tuning knob allows for ± 0.5 & wing shift for Doppler-shift compensation
- Markers at every 0.1 & for reference and repeatability
- Internal baffles increase contrast
- Optical coatings designed specifically for 656nm H-alpha wavelength
- LED indicators for power, warming, ready, and fault
Use and Handling
- Built with Questar eyepiece and rear port threads
- For off axis energy rejection filters
- Brass compression ring to protect eyepiece from scratches
- Accepts 1.25" eyepieces
Recommended OTA Specifications
- For use with Questar telescopes
- No aperture limitation
- Must use a front-mount energy rejection filter to prevent overheating the OTA
- Not for use with full aperture Schmidt-Cassegrain ERFs - damage to secondary mirror may result
- Best performance with f/13 and slower focal ratio OTAs
Power
- 5 VDC, 1.5A micro-USB port
- 90-240 VAC wall adapter
- Set of international outlet plugs for US, UK, EU, and Australia
EAN: 702730991022
DayStar Filters DSZQP Specs
| Type | Hydrogen-Alpha |
| Filter Factor | 0.8 - 0.6 „« |
| Blocking | 25 mm, 21 mm clear aperture |
| Application | Prominence viewing |
| Size | Questar eyepiece and rear port thread Accepts 1.25" eyepieces |
| Multi-Coated | Yes |
| Power Requirement | 5 VDC, 1.5 A |
| Construction | Aluminum alloy |
| Dimensions | 5.7 x 2.8 x 2.2" / 14.6 x 7.1 x 5.5 cm |
In the Box
- DayStar Filters Questar Quark H-Alpha Eyepiece Solar Filter (Prominence)
- Wedge Adapter
- Quark H-Alpha Filter
- Plastic Case
- USB Power Cord
- Wall Outlet Power Adapter
- Set of International Plug Adapters
- 5-Year Manufacturer Warranty
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