Alstar 2" Narrowband O-III Filter - Enhance Contrast in Dark Skies - Observe Clear Veil, Ring, Dumbbell and Orion Nebula, Among Many Other Objects - Image 1

£64.28

A ALSTAR Alstar 2" Narrowband O-III Filter - Enhance Contrast in Dark Skies - Observe Clear Veil, Ring, Dumbbell and Orion Nebula, Among Many Other Objects

Name: Alstar 2" Narrowband O-III Filter - Enhance Contrast in Dark Skies - Observe Clear Veil, Ring, Dumbbell and Orion Nebula, Among Many Other Objects
Brand: A ALSTAR
Price: 51.36 GBP
Availability: InStock

SKU_AM_OF2A10

Telescope Accessories

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Price range: £51 - £64

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Key Features

Each Alstar 2 inch O III Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the two O III emission lines

Not only useful at light polluted sites; the contrast is also increased at dark sky sites; can be used with all 2 inch eyepieces; Filter made from high grade glass with dichroic interference and antireflection coatings

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

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 496 nm to 501 nm to pass through at 95 percent

2 inch O III Filter greatly enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; The 2 inch filter allows high contrast imaging even in areas with strong light pollution

Product Specifications

Brand: A ALSTAR
Model: SKU_AM_OF2A10
Format: Electronics
ASIN: B078H55NLX
Category: Electronics & Photo > Camera & Photo > Accessories > Telescope Accessories
Domain: Amazon UK
Listed Since: 06 November 2017

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A ALSTAR Alstar 2" Narrowband O-III Filter - Enhance Contrast in Dark Skies - Observe Clear Veil, Ring, Dumbbell and Orion Nebula, Among Many Other Objects

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