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Description
ALPINE ASTRONOMICAL Blue 470nm Bandpass Filter (2")Planetary Viewing Imaging Filter 470nm Wavelength Bandpass 2" Eyepiece Threads 7 Layer Anti Reflection Multi Coated No Reflections, Scatter or Image Dimming Planeoptically Polished Optical Glass 70% Throughput Transmission Blackened Aluminum Frame Stackable with Other Filters Centered on the 470nm wavelength, the Alpine Astronomical Baader Blue Colored Bandpass Eyepiece Filter can be used by itself or stacked with other filters to enhance your
- Planetary Viewing/Imaging Filter
- 470nm Wavelength Bandpass
- 2" Eyepiece Threads
- 7-Layer Anti-Reflection Multi-Coated
- No Reflections, Scatter or Image Dimming
- Planeoptically Polished Optical Glass
- 70% Throughput Transmission
- Blackened Aluminum Frame
- Stackable with Other Filters
Centered on the 470nm wavelength, the Alpine Astronomical Baader Blue Colored Bandpass Eyepiece Filter can be used by itself or stacked with other filters to enhance your observations when viewing or imaging comets or planets such as Venus, Mars, Jupiter, and Saturn. The optical glass filter is planeoptically polished and treated with seven-layer Phantom Group anti-reflection multi-coatings to improve contrast and clarity while eliminating reflections, scattering, or image dimming. Holding the filter is an black anodized aluminum frame made to fit standard 2" eyepieces and other accessories such as diagonals and Barlows.
- Use
-
- For visual and photographic planetary use
- Observe high clouds on Mars, enhances contrast of hazes on terminator of Mars
- Appears to make reddish structures darker�ideal for observing the Great Red Spot on Jupiter
- Shows Saturn rings better
- Monitor the structures in the atmosphere of Venus
- Highlights the fine details in gas tails produced by comets
- 70% average transmission bandpass throughput
| Size | 2" |
| Filter Factor | Blue, 470nm wavelength |
| Multi-Coated | Yes |
| Rotating | No |
| Application | Lunar and planetary viewing and imaging |
| Construction | Glass filter, aluminum frame |
| Front Filter Thread Size | 2" |
| Weight | 2.3 oz / 66.0 g |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy