Product Details
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Daystar Calcium H-Line Quark Filter
This All-In-One design marries high quality components of adapters, snouts and Daystar calcium filter into one simple assembly. Through design efficiency and optimization, now users can enjoy the known high quality optics of Daystar at an affordable price.
- Calcium H line (3968.5Å), approx 5Å FWHM.
- 1.25″ eyepiece snout with safety indent slot directly into your diagonal or focuser
- Standard 1.25 eyepiece drawtube output with optional 2″ accessories available.
- Brass compression ring to protect eyepiece. Uses USB power, 5v 1.5amp Includes 90-240VAC wall adapter with international plug adapters.
- Optional 8-hour battery pack available.
- Integrated 25mm blocking filter, 21mm clear filter aperture. No barlow or focusing elements included.
- Best performance with F/7 – F/30 refractors full aperture.
- Full disk viewing possible on refractors up to ~1800mm focal length
- No aperture limitations. May be used on larger refractors for higher magnification views
- Ships in convenient Twist-Case for safe, dust-free storage.
Why H-line?
Many astronomers forget that the Calcium H-line and K-line yield virtually identical views of the Sun. Solar researchers who only image the Sun with CCD cameras often choose the K-Line for purely research purposes. Sadly, with Calcium K-line filters, many older astronomers are unable to see the lower wavelength and miss out on all the fun. We offer higher wavelength Calcium H-line filters for visual observers so that most clients can enjoy Calcium! [caption id="attachment_9331" align="aligncenter" width="600"]
DayStar Calcium H-Line Quark through 100mm F15 achromat on Dec 15, 2015 using Pt Grey BFLY-PGE-23S6M-C camera; 2ms exposure, RegiStax of best 10 frames out of 100[/caption] [caption id="attachment_9333" align="aligncenter" width="526"]
DayStar Calcium H-Line Quark through 100mm F15 achromat on Dec 15, 2015 using Pt Grey BFLY-PGE-23S6M-C camera; 22ms exposure, RegiStax of best 10 frames out of 100[/caption]
- The Daystar Calcium Quark is for use on F/7 or longer focal ratio refractors, the user needn't worry about configurations. Just insert in your diagonal, add an eyepiece and view. Short focal ratio refractors will need a 2x or 2.5x Powermate to get the best performance.
- Exact filter bandpass will vary based on final telescope application. No specific FWHM bandpass is designated, but it will be around 5Å. The fully optimized design eliminates the need for any adapters. It's all combined in one lightweight eyepiece sized device.
- The new, compact design configuration eliminates unnecessary components, weight and associated costs. We even reduced power consumption, so the Quark can now operate all day off a small, palm-sized optional battery pack.
- Not compatible with red or yellow glass ERFs. Recommended for use with a UV/IR cut filter for safety. Users need to purchase an Energy Rejection Filter specific to their telescope for safe operation. The Calcium Quark can NOT be used with front mount ERF.
- Baffles have been added to increase contrast and AR coatings are optimized for the 397nm wavelength. We even reduced power consumption, so the Quark can now operate all day off an optional small, palm-sized battery pack.
*The QUARK* assembly is a product of DayStar Instruments, using DayStar Filters' Fabry Perot etalon technology.
Additionnal Features
- The Calcium Quark brings quick, easy fun of the Original Quark to Calcium H-Line.
- For use on refractors of F/7 or longer focal ratio refractors.
Technical Specifications
| Wavelength | 3968.5Å |
| Tuning knob | Wing shift /- 0.5Å in 0.1Å increments. |
| FWHM | 5Å |
| Compatibility | F/7 to F/30 Refractor telescopes in full aperture. |
| Back Focus | Requires refocusing 61, 67, or 99mm inwards |
| Blocking Filter | Integrated 25mm blocking filter |
| Clear Aperture | 19mm clear etalon aperture |
| Full Disk | Passes full solar disk for focal lengths under ~1800mm |
| Aperture Limit | None, usable on large telescopes for high magnification
For apertures over 80mm, suggest UV/IR cut filter |
| Sun Side | 1.25” snout, 1.25” extension snout, or 2” snout |
| Eyepiece side | 1.25” female drawtube
Brass compression ring to protect eyepiece Optional 2″ and SCT accessories available |
| Power | USB power, 5v 1.5amp, female Micro-B connector
Power is required for proper operation |
| Wall adapter | 90-240VAC wall adapter, includes US, UK, Euro and Australian plugs |
| Opt. battery | ” Optional 8-hour battery pack available” |
| LED indicator | Yellow: temperature settling
Green: ready to observe, filter on band Red: fault such as low voltage |
| Settling time | Approximately 5-15 minutes after power up or change of wing shift |
| Temperature | Ambient temperature range 40°-100°F |
| Dimensions | 55mm diameter x 71mm x 91mm long |
| Weight | TBD |
In the Box
- Quark Filter
- Wall Adapter
- USB Power Cord
- Case
Warranty & Manuals
Daystar 5-Years Warranty
