Explore Scientific Solarix A4 Solar Filter Film
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Explore Scientific
High-quality EXPLORE SCIENTIFIC O-III Fog Filter - Only lets pass the emission lines of oxygen - Absorbs all remaining colors and almost all artificial light - Individual test report included - Band pass width: 12nm
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Explore Scientific 1.25” O‑III Nebula Filter
The Explore Scientific 1.25” O‑III Nebula Filter is a precision optical accessory designed to enhance the visibility of deep–sky objects for both amateur astronomers and astrophotographers. By selectively transmitting light at the O‑III (doubly ionized oxygen) emission line of 500.7 nm, this filter dramatically increases the contrast of nebulae and emission–line objects while suppressing unwanted background light.
Key Features
- Diameter: The filter’s external diameter is precisely 31.7 mm, making it compatible with a wide range of 1.25” telescope eyepieces, camera lenses, and imaging setups.
- Bandwidth: A narrow passband of 12 nm ensures that only the desired O‑III emission is transmitted, providing sharp, high‑contrast images.
- High Transmission: The filter boasts a peak transmission of up to 90 %, allowing maximum light throughput for faint nebular structures.
- Coatings: Advanced anti‑reflection coatings reduce glare and internal reflections, preserving image fidelity.
- Durability: Constructed from high‑quality optical glass and sealed with a robust housing, the filter resists dust, moisture, and mechanical shock.
Optical Performance
The O‑III 12 nm filter** is engineered to isolate the prominent oxygen emission line that dominates many planetary nebulae, supernova remnants, and H II regions. By filtering out the continuum light from stars and skyglow, observers can:
- Reveal faint filamentary structures that are otherwise lost in the background.
- Enhance color contrast when used with complementary filters (e.g., H α, S‑II).
- Improve signal‑to‑noise ratios in long‑exposure astrophotography.
Compatibility and Mounting
The 1.25” size is a standard in the amateur astronomy community, allowing seamless integration with:
- 1.25” eyepieces for visual observation.
- 1.25” camera lenses and focal reducers used in CCD or CMOS imaging.
- Filter wheels, filter trays, and adapter rings designed for the 1.25” format.
Installation is straightforward: slide the filter into a compatible mount, secure it with the provided screws or magnetic holder, and align it with the optical axis. The filter’s flat surface ensures minimal vignetting across the field of view.
Applications in Astronomy
The Explore Scientific O‑III filter** is ideal for a variety of observational and imaging tasks:
- Planetary Nebulae: Objects such as the Ring Nebula (M57) and the Cat’s Eye Nebula (NGC 6543) exhibit strong O‑III emission, making them perfect targets for this filter.
- Supernova Remnants: The Crab Nebula (M1) and the Veil Nebula (NGC 6992/5) display intricate filamentary structures that become visible with O‑III isolation.
- H II Regions: While H α is the dominant line, many H II regions also emit O‑III; this filter can highlight secondary features.
- Astrophotography: Long‑exposure images benefit from the filter’s high transmission and narrow bandwidth, producing crisp, color‑rich nebular portraits.
- Educational Demonstrations: The filter’s ability to reveal hidden structures makes it a powerful tool for teaching about emission lines and nebular physics.
Maintenance Tips
- Clean the filter surface with a soft, lint‑free microfiber cloth and a mild optical cleaner.
- Avoid touching the glass with bare hands; use gloves if possible to prevent oils and fingerprints.
- Store the filter in a dust‑free case when not in use to preserve its optical clarity.
- Check for scratches or cracks periodically; any damage can compromise the filter’s performance.
Conclusion
The Explore Scientific 1.25” O‑III Nebula Filter** is a premium, versatile tool that unlocks the hidden beauty of emission nebulae. Its precise 12 nm bandwidth, high transmission, and durable construction make it an indispensable addition to any serious amateur astronomer’s toolkit. Whether you are peering through a telescope or capturing images with a CCD camera, this filter will elevate your observations to new levels of clarity and contrast.
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EXPLORE SCIENTIFICEXPLORE SCIENTIFIC O-IIIFilter 12nm
Identifiers
Brand
Explore Scientific
MPN
Explore Scientific 0310205
ID
25831385
