Daystar QUARK CALCIO H-Line filter for F7 or longer refractors, Live Observations

Daystar Instruments QUARK is the first H-Line CALCIUM "Eyepiece" for visual observations

Attach it to your refractor and turn it into a solar telescope

To be used in refractors from F7

From 80mm you will need an ERF Filter (Energy Rejection Filter) to use with tracking.

The Calcium filter is not compatible with red and yellow ERFs (Energy Rejection Filters).

Recommended to always use the daystar UV/IR filter (article 63518) and mandatory from 150mm aperture

Why line H?

Many astronomers forget that the calcium H and K lines produce virtually identical views of the Sun. Solar researchers who only image the Sun with CCD cameras often choose K-Line for purely research purposes. Unfortunately, with calcium K-line filters, many older astronomers can't see the lower wavelength and miss out on all the fun. We offer longer wavelength Calcium H line filters for visual observers so that most customers can enjoy Calcium!


Entrega entre 15 y 20 días laborables


For use on F/7 or longer focal ratio refractors up to 80mm aperture in short, non-tracking sessions, the user does not need to worry about settings.

From 80mm, the use of ERF (Energy Rejection Filter) is mandatory and thus it is already suitable for observation sessions with follow-up.

The Calcium filter is not compatible with red and yellow energy rejection filters, so it can be used with refractors up to 80mm in diameter (according to our products for sale) and using Daystar's UV/IR filter (Number 63518). short sessions without follow-up.

Below 80mm, the use of ERF (Energy Rejection Filter) is recommended for sessions with monitoring, in addition to significantly improving its performance.

Just insert it into your diagonal, add an eyepiece, and see.

Short focal ratio refractors will need a 2x or 2.5x telecentric Barlow for best performance and to achieve the ideal working focal length of the device which is between F7 and F30.

No specific FWHM bandpass is designated, but it will be around 5 Ångstroms

Observers can now choose to purchase a filter based on their observing goals rather than their budget.

Fully optimized design eliminates the need for adapters.

Everything is combined in a lightweight device the size of an eyepiece.

The new compact design configuration eliminates unnecessary components, weight and associated costs. We've even reduced power consumption, so Quark can now run all day on an optional small, palm-sized battery.

*The QUARK array is a product of DayStar Instruments, utilizing DayStar Filters' Fabry Perot etalon technology.

Calcium H line (3968.5 Å), approximately 5 Å FWHM.

1.25" or 2.0" combination eyepieces with safety notch slot directly on its diagonal

Standard 1.25 eyepiece drawtube output with optional 2" and SCT accessories available

Brass compression ring to protect the eyepiece.

Uses USB power, 5v 1.5amp Includes 90-240VAC wall adapter with international plug adapters.

Adjustment knob allows wing change +/- 0.5Å with detents at every 0.1Å.

LED indicator for power, warm-up, ready and fault

5 year warranty.

Optional 8 hour battery pack available.

Integrated 12mm blocking filter 21mm clear filter opening

Better performance with refractors from f7 to f30

Full viewing of the Solar disk possible on refractors up to ~1800mm focal length

No opening limitations. Can be used on larger refractors for higher magnification views combined with the energy rejection filters.

Supplied in a convenient swivel case for safe, dust-free storage.

Housing No
Wavelength No
Bandwidth N/A
Uniformity SE (Standard Edition)
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