TS-Optics 1.25" Energy Rejection Filter for Quark Chromosphere

TS-Optics 1.25" Energy Rejection Filter for Quark Chromosphere: detailed overview

TS-Optics 1.25" Energy Rejection Filter for Quark Chromosphere is solar observing places special demands on both optics and safety. This product must only be used as part of the complete, purpose-designed filtering system specified for it. Key product data include Blockung: OD2 (off-band zwischen 300 nm und 1100 nm); Durchlässigkeit: ≈99 % (on-band); Trägermaterial: Hochwertiges optisches Glas B270. The important point is not a single specification on its own, but the way optics, mechanics and intended use work together.

Depending on filter type, the photosphere or H-alpha structures may be visible. Energy rejection and safety filters must always be used exactly according to the manufacturer's instructions. This makes it easier to choose the product for a real observing or imaging task rather than simply chasing the highest specification.

Who is it for?

• Experienced solar observers or beginners following complete instructions
• Visual or photographic solar observing as approved for the product
• Specialised solar setups

Technical features from the product data

• Blockung: OD2 (off-band zwischen 300 nm und 1100 nm)
• Durchlässigkeit: ≈99 % (on-band)
• Trägermaterial: Hochwertiges optisches Glas B270
• Dicke des Trägermaterials: 2 mm
• PV: 1/4 lambda
• Beschichtung: Mehrschichtige Verbundbeschichtung
• Fassung: 1,25 Zoll, Gewinde M28,5*0,6
• Dicke der Fassung: Hauptteil 5 mm + Gewinde 2 mm, insgesamt 7 mm

Practical use, selection and system planning

Before every use, inspect filter surfaces, mounting and the complete optical chain. Never use improvised combinations or damaged filters. When building the complete setup, also consider existing connections, weight, working distances and equipment you already own. A clean mechanical system is easier to use and simpler to expand later.

Solar observing safety

Observe the Sun only with a complete, suitable, undamaged and securely mounted filtering system. Follow all manufacturer instructions regarding the filter chain, telescope aperture, energy rejection and installation. Never look at the Sun through unfiltered optics and never use improvised filter combinations.

Our recommendation

Choose accessories and upgrades for the actual application rather than theoretical maximum values. A well-matched system is usually more capable and more pleasant to use than a combination where components only just fit together.

Related products and alternatives

If you would like to compare alternatives or related equipment, these products are worth a look: DayStar Quark Chromosphere H-Alpha Solar Filter  ·  DayStar Quark Prominence H-Alpha Solar Filter  ·  DayStar Quark Gemini H-Alpha Solar Filter