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Key Features
- Ideal for Lunar Observation
- Phantom Group Optical Coatings
- Fits 1.25" Eyepieces and Accessories
- 0.9 Optical Density
Use the Alpine Astronomical Baader 0.9 Neutral Density Filter to reduce the amount of light coming into your eye during lunar observation and improve the view and contrast. The lens surfaces are fully multi-coated with Phantom Group seven-layer optical coatings. This maximizes light transmission across the entire visual spectrum, stepping down the light throughput while maintaining color-neutral views without reflections, ghosting, or stray interference light.
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Is this the filters that makes planets not looks ...
Is this the filters that makes planets not looks like a white dots and see details?
I have another ND 0.9 filter, and it indeed helps with Jupiter. Especially in medium to large telescopes, its intense glare makes it difficult to observe details due to the large contrast relative to the background (unless you observe at early/mid dawn or late/mid dusk). I can attest a ND 0.9 filter will help a lot in an 8 inch (203 mm) aperture telescope with Jupiter, making it easier to distinguish the belts, enhancing some contrasting details of them against the zones (lighter bands), and ocassionally some festoons. The colors will also be closer to the actual ones (at least to the human eye), in comparison with a blue (eg: 80A) filter, which is often recommended for Jupiter.
Date published: 2021-07-24