Manufacturer: DayStar .. Solar
Product number: DSZ4C

EUR 1.499,00RRP EUR 1.674,00you save 10.5% (EUR 175,00)


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Product expected to be available from 01.06.2024

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rating: 5.0 of 5
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  • Reviews..
Daystar Instruments QUARK - eyepiece side H-alpha Filter System for Chromosphere
The first one-piece H-Alpha filter system for refractors from f/9 to f/4

This new, all-in-one design marries high quality components of a telecentric barlow, adapters, snouts and Daystar hydrogen alpha 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.

For use on refractors of F/4 to F/9, the user needn´t worry about optical configurations. Just insert in your diagonal, add an eyepiece and view.

The QUARK contains a custom Daystar Instruments 4.2X telecentric Barlow lens fully optimized in coatings and optical design specifically for the Hydrogen Alpha wavelength. This highly specialized telecentric lens offers superior field flatness.

Exact filter bandpass will vary based on final telescope application, so QUARK assemblies are qualified to show either prominence or surface (chromosphere). No specific FWHM bandpass is designated. Now observers can buy a filter based on their desired observing goals instead of their budget. Choose prominences and surface (Chromosphere) detail. Both are available for the same low price!

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. Baffles have been added to increase contrast and AR coatings are optimized for the 656 nm wavelength.

Versions
2 Versions: Prominence or Chromosphere - this version is for Chromosphere.

Prominence: prominences of the sun
Chromosphere: H-Alpha details on the surface of the sun (solar disc)

Necesssary measures for different telescopes
For refractors up to 80 mm, no filter is necessary, but an energy rejection filter (ERF) in front of the objective can be used.
For refractors between 80 mm and 150 mm, a UV/IR blocking filter is absolutely necessary, an ERF in front of the objective can be used.
For larger refractors, all SCTs and all Newtonians, an ERF at the front side is absolutely necessary.


This is how Teleskop-Service hands over the Daystar filters to the star friend:
Every Quark solar filter is tested on the sun before it is stored in our technique. We have a reference filter for this purpose. Only filters that pass this test go to our warehouse for shipment. Filters that do not pass the test are returned to DayStar with a request for exchange. This way we guarantee you will enjoy your DayStar H-Alpha filter from the beginning.

Attention at low temperatures:
A Fabry-Pérot filter may never freeze. Being made for working at a very specific temperature, a complex filter should not be exposed to temperatures below 5 °C (40 °F).

The immersion oil which connects the optical elements can solidify. Then, it presses them apart and the coatings of the to 1/200 lambda plane-parallel polished etalon plate suffer damage.

Also, the adhesion of the dielectric coating is extremely stressed, resulting in an accelerated intercalation of water into this layer.

This is regarded as mistreatment and forced ageing of the filter, voiding warranty.

For this reason, we recommend putting the filter into a case, best with drying agent, and storing it in the warm home. Thus you will enjoy the filter for many years.

Features at a glance
1.25" or 2.0" combo eyepiece snouts with safety indent slot directly into your diagonal
Standard 1.25 eyepiece drawtube output with optional 2" and SCT accessories available.
Brass compression ring to protect eyepiece.
Uses USB power, 5 V 1.5 A
Includes 90-240 V AC wall adapter with international plug adapters.
Tuning knob allows wing shifting +/- 0.5 Å with detents at every 0.1 Å
LED indicator for power, warming, ready, fault
5 year warranty from Daystar
Optional 8-hour battery pack available.
Integrated, fully baffled 2 element telecentric 4.2X barlow optimized for 656 nm
Integrated 12 mm blocking filter
21 mm clear filter aperture
Best performance with F/4 - F/8 refractors
Full disk viewing possible on refractors up to ~450 mm focal length refractors
No aperture limitations. May be used on larger refractors for higher magnification views (needs ERF filter in front of lens)
Ships in convenient Twist-Case for safe, dust-free storage.
Not suited for off-axis application.
The 2" adapter on the telescope side can be removed. than you have a female M48x0.75 thread for adaptions

Transmitted wavelength:656.3 nm
FWHM:0.5-0.3 Å
Tuning range:+/- 0.5 Å with detents at every 0.1 Å
Connection at telescope side:1.25", 2", M48x0.75 thread (female)
Connection at eyepiece side:1.25" with brass compression ring
Beam widening:telecentric 4.3x 2-element Barlow, baffled, optimized for 656 nm
Blocking filter:12 mm diameter
Clear aperture:21 mm
Optimal focal ratio range:f/8 to f/4
Full solar disc visible up to focal range (telescope):approx. 450 mm
Power supply:USB, 5 V, 1.5 A
LED indicators:Power, warming, ready, fault
Minimum temperature:5 °C
Necessary for apertures of more than 80 mm:UV/IR ERF protection filter in front of the objective
Quark body
Power adaptor
Storage box

Solar images from Jozef Cukas
made trough a 100/1000mm and DayStar QUARK H-Alpha version for Chromosphere

Sun Quark Chromosphere - Mr. Cukas

Sun Quark Chromosphere 2

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Congradulations!!!!

The new QUARK H-Alpha eyepiece filter by Daystar

... a first review by Andy Murner

For a first test, we used the TS Apo 115 S. It took up to 10 min for the filter to reach the correct temperature (indicated by a LED color change to green). In this time, you can set up the telescope.

The "Chromosphere" version shows the solar surface with rich contrast and all structures like filaments, sun spots, active regions as expected in H-Alpha. Picture brightness is comfortable, not too dark. A black towel was not necessary. As expected, Spicules and Prominences could be seen, too.

The "Prominence" version shows a brighter picture, but with less contrast on the solar surface. Prominences however are amplified and can be clearly seen in front of the background. Surface structure could still be seen with good structure.

115 mm aperture deliver enough resolving power to make fine structure visible and to walk along the spicule forest with 200x magnification in detail. With the 4.3x focal length extension, you can use long focal length eyepieces with good viewing comfort and still reasonable magnification.

Both models offer a very good value for the money and will find their place amoung the solar observers for sure.

Sonne durch den QUARK - H-Alpha Okularfilter© by Chris Wöhrle

Captured with the TS 115 mm Apo and Quark Prominence H-Alpha Filter
The iPhone has just been held to the eyepiece.



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Reviews

Written by Walter Schreiner
on 2023-04-02

"Gehr richtig gut"

Written by Dave Mason
on 2021-04-04

zufrieden

Written by Michael Quartz
on 2018-06-14

"Nach meinen ersten Versuchen und den Blick auf die Sonne war ich begeistert. In Kombi mit dem TS Refraktor 80/600mm kommt er auf 2580mm Brennweite, was den Vorteil bringt die Sonne doch schon sehr groß zu sehen und man kann Protuperanzen sehr gut erkennen."

Written by Marco Döpfner
on 2018-06-10

"Man sollte die 4,3 Brennweitenerweiterung nicht unterschätzen, sonst sucht man die Sonne, trotz einem (aber wahrscheinlich nicht 100% ausgerichtetem) montierten Sonnensucher, bei einem Teleskop mit einer Öffnung von 152, bei 1200 Brennweite (ohne den Faktor 4,3), bis zur Frustration. Konnte den Filter dann mit einem 80/500er testen, da sieht es dann schon anders aus. Leider habe ich keinen Vergleich zu den Solar Spectrum SunDancer Filtern, aber ich denke, bei dem Preisunterschied, stellt dieser Filter eine gute Alternative dar, auch wenn ich den Filter noch nicht so testen konnte, wie ich es noch vor habe."

Written by Karel Frank
on 2017-04-18

"Hervorragendes Preis-Leistung Verhältnis"

Written by Sascha Kunka
on 2016-05-26

"Einfache Handhabung"