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Astromania 1.25' O-III Filter - Made from Premium Glass with Dichroic Interference and Antireflection Coatings, Enhancing Contrast During Visual Observation of Gaseous and Planetary Nebulae

4.5 (2) Write Review
Free shipping on orders over $29.99

$47.97

$ 22 .99 $22.99

In Stock

About this item

  • 1.25 inch O-III Filter greatly enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; allows high-contrast imaging even in areas with strong light pollution
  • Especially useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming; allowing just for the Double Ionized Oxygen lines between 496nm to 501nm to pass through at 95 percent
  • Completely blocks virtually all other visible wavelengths of light so views of nebulas are optimized; increases contrast through selective filtration-Anti-reflection coated to prevent glaring and ghosting
  • Not only useful at light-polluted sites; the contrast is also increased at dark sky sites; can be used with all 1.25 inch eyepieces; filter made from high-grade glass with dichroic interference and antireflection coatings
  • Each Astromania 1.25 inch O-III Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the two O-III emission lines


Product Description

Freedom to Choose

    • Sutiable Diameter

      1.25"

    • Sutiable Diameter

      1.25"

    • Sutiable Diameter

      1.25"

    • Filter Type

      High-End Nebula Filter

    • Filter Type

      High-End Nebula Filter

    • Filter Type

      High-End Nebula Filter

    • Function Point

      Executes with a transmission of over 90% and completely rejects light pollution.

    • Function Point

      Blocks the light from mercury and sodium-vapour lamps.

    • Function Point

      Blocks the infamous stray light and light from mercury and sodium vapour lamps.

1

Astromania 1.25" OIII filter only allows the light of doubly ionized oxygen through. This means that there is an enormous increase in contrast with diffuse, planetary and extremely dim nebulae. This is a special narrowband filter which allows an even smaller range of wavelengths than UHC filter.

Excellent Designed With Multiple Frame - Easier To Install

4

Wide Compatibility - Feel the Beauty of Nebulae

6

Astromania 1.25" O-III Filter - Good and Trustworthy Partner

7

The Perfect Companion On Your Journey Of Astronomical Discovery

5

unknown
Reviewed in the United States on September 12, 2024
can’t see any nebula with it. makes no difference. terrible waste of money
Artic Wolf
Reviewed in the United States on October 11, 2024
Excellent O-iii filter. Discover and enhance O class stars (white dwarfs), common companions in binaries and clusters. Sharp Passband characteristics. Superb.
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