₹14,366.00INR
The Astronomik OIII Filter is one of the most powerful specialty nebula filters available, designed to isolate the two critical Oxygen-III emission lines at 495.9 nm and 500.7 nm. By transmitting these lines with exceptional efficiency, the filter dramatically enhances detail and contrast in emission and planetary nebulae—revealing structures that are otherwise invisible under normal skies.
The filter delivers peak transmission above 95% at both OIII wavelengths, ensuring maximum brightness of nebulae such as:
Veil Nebula
Helix Nebula
Dumbbell Nebula (M27)
Swan Nebula
Ring Nebula (M57)
Orion Nebula structural enhancements
This makes faint nebula structures visible even from light-polluted Indian skies.
The OIII filter blocks nearly the entire visible spectrum except the OIII line pair. This results in:
Dramatically boosted nebula contrast
Reduced light pollution & skyglow
Cleaner backgrounds for both visual and imaging applications
Ideal for observers in Mumbai, Delhi, Bengaluru, Chennai, and other heavily light-polluted cities.
Astronomik filters are world-renowned for their optical precision:
Parfocal design
No halos, reflections, or star bloating
Durable, scratch-resistant coatings
Resistant to moisture, dew & temperature variations—ideal for Indian climate
Works seamlessly with:
Refractors (Achromats, ED, APO)
Newtonians & Dobsonians
SCT & Maksutov telescopes
CMOS/CCD astrophotography cameras
DSLR & Mirrorless systems (with adapters)
Fine filamentary structures in supernova remnants
Intricate details in planetary nebulae
Sharp outlines of emission nebula shells
Dramatically improved visibility from urban India
For astrophotographers, the Astronomik OIII is a critical component in narrowband imaging, enabling stunning professional-level SHO (Hubble Palette) and HOO compositions.
100% genuine Astronomik filters
India warranty & after-sales support
Fast delivery across India
Expert guidance for filter selection and imaging workflow
Support for astronomy outreach, observatories & astrophotography projects