Daystar Quark for Questar Chromosphere Solar Filter

An All-in-One Hydrogen-Alpha System for Questar Telescopes

This Quark model eliminates the complexity of assembling a separate filter, energy rejection filter, and barlow lens. The entire optical system is contained in one compact device that inserts directly into your Questar's diagonal, ready for an eyepiece.

The efficient, optimized design reduces weight and cost, removing unnecessary components from the optical train. This integrated approach not only simplifies your setup but also makes high-quality solar observation more accessible and portable than ever before.

Chromosphere-Tuned for High-Contrast Solar Surface Detail

This Quark is specifically qualified to reveal the intricate, high-contrast details of the Sun's chromosphere. You can expect to clearly see features like filaments snaking across the disk, bright plages surrounding active regions, and the fine granulation of the solar surface. The internal Daystar Fabry-Perot etalon is protected within the assembly, with anti-reflective coatings and baffles optimized for the hydrogen-alpha wavelength.

Instead of designating a specific bandpass, Daystar tunes each Quark for an observational goal. This Chromosphere model is your choice for studying the dynamic, ever-changing surface of our star, prioritizing contrast over the faint features at the limb.

USB Power and Native Questar Threading

Engineered for modern convenience, the Quark runs on standard USB power, allowing it to operate all day from a small, palm-sized battery pack (sold separately) or the included wall adapter. For seamless integration, it features a unique triple-connector snout: a standard 1.25” barrel, native Questar eyepiece threading, and native Questar rear port threading. This ensures a secure, direct fit to your telescope without any guesswork.

• Direct Questar Fit: Attaches via the Questar eyepiece thread (1.270-32 UNS) or the rear port thread (M30x0.8) for a rigid connection.
• Standard Output: The 1.25" eyepiece holder uses a brass compression ring to protect your eyepieces from scratches.
• Global Power: The included 90-240VAC adapter comes with international plugs, making it ready for travel.

Quark Chromosphere vs. Prominence: Choosing Your Solar Target

Daystar offers two versions of the Quark for Questar, tuned for different solar phenomena. The choice between them depends entirely on your primary observing interest.

• Prominence Model Advantage: The Prominence version is tuned to be slightly off-band, which enhances the visibility of faint, delicate prominence structures erupting from the solar limb against the black background of space.
• Chromosphere Model Advantage: This Chromosphere model provides a tighter, on-band view. This increases contrast across the solar disk, making it superior for resolving the complex web of filaments, plages, and active regions that define the Sun's surface. While very bright prominences may still be visible, this filter's strength is surface detail.