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DayStar Quark - Sodium

CHF 1'215

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DayStar Sodium D-Line Quark

Transform your F/4-F/8 refractor into a high-resolution solar observation instrument with this all-in-one H-alpha Sodium filter. The design combines filter, adapters and snout in a single compact unit.

Why the Sodium line?

High-resolution sunspot detail, granulation and super-granulation depending on seeing quality.
Observation of flare footprints (solar flames starting with the Sodium ends before the white).
Brighter line than Calcium or H-alpha: visible images with short exposure times.
D2 filter at 5890 Å with FWHM 0.5 Å or less.

Key features

Type	Sodium D-Line H-alpha filter (0-power)
Compatibility	F/4-F/8 refractors
Eyepiece outlet	1.25″ standard, snout included
Barlow / Optics	0-power filter only; telecentric barlows sold separately
Blocking filter	Integrated
Power supply	USB 5 V 1.5 A, incl. 90-240 V mains adapter
Baffles	Present for contrast enhancement
AR Coatings	Optimized for 589 nm
Supplied box	Compact, lightweight, optional battery pack available
Security	Recommended for use with specific ERF filter and UV/IR cut filter

Instructions for use

Insert the Quark directly into the angled guide of the F/4-F/8 refractor.
No need for additional adapters thanks to all-in-one design.
Compatible only with yellow glass ERF filters. Red glass filters do not transmit the Sodium line.
Optimized for visual observation and short-exposure solar imaging.

Remarks

Assembly using Fabry Perot Etalon technology from DayStar.
Delivery on request: advance booking required.
All purchases and repairs subject to sales conditions and advance replacement policy.