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£74.16
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
SKU_AM_OF2A10
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£74 today · previous high £74 · all-time low £51
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Price History & Forecast
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Last 64 days · 64 data points (no recent data)
Price Distribution
Price distribution over 64 days • 3 price levels
Price Analysis
Most common price: £51 (48 days, 75.0%)
Price range: £51 - £74
Price levels: 3 different prices over 64 days
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
- ASIN
- B078H55NLX
- Domain
- Amazon UK
- Listed Since
- 06 November 2017
Barcode
No barcode data available
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