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£50.62
It has never been this cheap. We have no record of a lower price.
£51 today · cheaper than every other day in the last 3 months
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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Price History & Forecast
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Last 42 days · 42 data points (no recent data)
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Price Distribution
Price distribution over 42 days • 2 price levels
Price Analysis
Most common price: £73 (31 days, 73.8%)
Price range: £51 - £73
Price levels: 2 different prices over 42 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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