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The EXPLORE SCIENTIFIC H-Alpha filter allows photography of red glowing emission nebulae; narrow band version with 7 nm to increase contrast even in difficult urban conditions.
- High-quality EXPLORE SCIENTIFIC H-Alpha filter
- Only lets the emission lines of hydrogen pass
- Absorbs all other emission lines and almost all artificial light
- Ideal for use near the city, with heavy lightened skies
- Band pass width: 7 nm
- Better contrast and more details achievable for urban astrophotographers
- Blocks almost all light from mercury and sodium vapor lamps
- Many of the red glowing emission nebulae are only visible in full expansion on photos taken with these filters
- In spite of the existing light pollution amazingly good image results are possible
- Individual test certificate included to guarantee you receive a premium filter
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Bresser EXPLORE SCIENTIFIC 2 H-Alpha Nebula Filter 7nm
Produkta kods: 46790
SKU: 46790
Ean: 4007922072746
Manufacturer: Bresser
Condition: New product
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Apart from air turbulence, the brightening of the night sky is the greatest barrier to observing faint objects beyond the solar system. Due to streetlamps and other artificial lighting the sky in urban areas is no longer properly black. As a result, the contrast and thus the perception of deep-sky objects also suffer. However, depending on the type of celestial object, it is possible to filter out some of the interfering light, making it easier to photograph the objects.
The EXPLORE SCIENTIFIC H-Alpha filter uses the characteristic of the so-called emission nebulae. These objects glow in certain colors, the so-called emission lines. The emission lines are associated with certain chemical elements - in this case the red glowing hydrogen. This filter blocks all other colors (and therefore almost all artificial light) and lets only the emission lines of hydrogen through. Especially the interfering light of mercury and sodium vapor lamps is effectively blocked. The effect is amazing: Suddenly, nebulae become visible on photos in locations which appear completely empty without the filter.
The EXPLORE SCIENTIFIC H-Alpha Nebula Filter has been developed exclusively for astrophotography. Especially in heavy light-polluted skies many emission nebulae only become visible and are shown in full expanse on astrophotos when using this filter. The H-Alpha nebula filters make astrophotography near the city possible and the use leads to amazingly good image results despite the existing light pollution. A must for every urban astrophotographer.
FEATURES
SCOPE OF DELIVERY
The EXPLORE SCIENTIFIC H-Alpha filter uses the characteristic of the so-called emission nebulae. These objects glow in certain colors, the so-called emission lines. The emission lines are associated with certain chemical elements - in this case the red glowing hydrogen. This filter blocks all other colors (and therefore almost all artificial light) and lets only the emission lines of hydrogen through. Especially the interfering light of mercury and sodium vapor lamps is effectively blocked. The effect is amazing: Suddenly, nebulae become visible on photos in locations which appear completely empty without the filter.
The EXPLORE SCIENTIFIC H-Alpha Nebula Filter has been developed exclusively for astrophotography. Especially in heavy light-polluted skies many emission nebulae only become visible and are shown in full expanse on astrophotos when using this filter. The H-Alpha nebula filters make astrophotography near the city possible and the use leads to amazingly good image results despite the existing light pollution. A must for every urban astrophotographer.
The EXPLORE SCIENTIFIC nebula filters are delivered with an individual test report - so you can be sure to get high quality filters.
This filter's narrow passband of only 7 nm bandwidth works out the faint emission nebulae or makes them visible even under difficult urban conditions.
FEATURES
- H-Alpha filters are used for astrophotography exclusively
- Allows photography of emission nebulae that glow in the light of red hydrogen
- Many of these emission nebulae are only visible in their full expansion in photos taken with this filter
- Blocks almost all artificial light, especially from mercury and sodium vapor lamps
- Only allows the emission line of red hydrogen to pass through
- Narrow band version for difficult urban conditions
- Transmission bandwidth: 7 nm
- Allows more contrast and detail for all urban astrophotographers
- Ideal for use near cities, in heavy brightened skies
- Individual test certificate included to guarantee you receive a premium filter
SCOPE OF DELIVERY
- 1x 2'' H-Alpha Nebula Filter
| Type of Product | Telescope acsessories |
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