Astrodon Filters High-Performance 3nm NII 1.25″ Narrow-band Filter
Original price was: $400.00.$98.99Current price is: $98.99.
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Product description
In the case that this article currently is not available from the warehouse, please note the following: we order from this supplier in regular intervals. Please place your order now, so that we may take into account your order and deliver the article to you by the above-mentioned date.
Enhance your deep sky viewing with the latest in multi-layer coating technology. These filters transmit desired wavelengths in a very steep slope vs. gentle transition slopes in competitive brands. This means better contrast and overall performance.
| Coating of optical system | multiple |
|---|---|
| Jupiter | – |
| Twin stars | – |
| Central stars | – |
| Comets | – |
| Supernova remains | yes |
| Planetary nebulae | yes |
| Hydrogen nebulae | – |
| Uranus | – |
| Saturn | – |
| Mars | – |
| Mount material | Aluminium |
| Venus | – |
| Mercury | – |
| Daylight and twilight observation | – |
| Anti light-pollution | yes |
| Useful for photographs | yes |
| Type of build | line filter Line filter Filters that allow only light in a specific spectral line to pass through.Click to read more… |
| Type | Filters Filters No matter whether they are for observing or for astrophotography, filters are very important accessories.Click to read more… |
| Frame | 1,25" 1.25" A standard measurement for accessories, expressed as 1.25 inches. 1.25" is equal to 31.8 millimetres.Click to read more… |
| Connection (to the telescope) | 1,25"1.25" A standard measurement for accessories, expressed as 1.25 inches. 1.25" is equal to 31.8 millimetres.Click to read more… |
| Galaxies and star clusters | – |
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