EXPLORE SCIENTIFIC Dark-Sky Filter 77mm Slim

Dark-Sky Filter 77mm Slim

  • Dark-Sky Filter
  • Contrast enhancer for Aurora- and Deep-Sky imaging
  • Wide field imaging of the milky-way, time lapse and landscape
  • Lightpollution damping filter
  • Ellimintates the yellow light which can´t be done by any imaging processing software
  • Black anodized filter housing
  • 77mm filter thgread for foto lens
  • flat design of only 4mm height (slim) - no vignetting
  • Ideal also for use with wide field foto lens
  • Made from optical glass with Neodymoxid

€79.00*

% €155.00* (49.03% saved)

Available, delivery time: 1-3 days

Product number: 0310260
GTIN/EAN: 4007922046877
Product information "EXPLORE SCIENTIFIC Dark-Sky Filter 77mm Slim "
Universal Dark-Sky Filter with 77mm thread for photo lens. Contrast enhancing filter for Aurora- and Deep-Sky imaging.

Especially during Aurora imaging the most important wavelength of 550nm (green) and 630nm (red) this filter let pass by 90%.
In comparrision to CLS filters, the Explore Scientific Dark-Sky Filter is blocking also the yellow Sodium (Na) wave at 590nm which elliminates Sodium-lamp street illumination from your picture.

This is very useful because the yellow light is always a partially mix of green and red light. Removing the yellow wave-length with any image processing software will always damping also the green and red coloring. For Aurory imaging this is of course not wanted.

At these days of increasing light pollution, the Explore Scientific Dark-Sky Filter is absolutely recommended in order to take pictures also from urban conditions.

Finally the slim housing design enables its use also with wide-field photo lens and doesn´t cause any vignetting.

Pictures at night taken by Bernd Pröschold - www.sternstunden.net

Test report:  http://www.sternstunden.net/filter-testing.html 


FEATURES
  • Deep Sky Filter
  • Contrast enhancer for Aurora- and Deep-Sky imaging
  • Wide field imaging of the milky-way, time lapse and landscape
  • Lightpollution damping filter
  • Ellimintates the yellow light which can´t be done by any imaging processing software
  • Black anodized filter housing
  • 77mm filter thgread for foto lens
  • flat design of only 4mm height (slim) - no vignetting
  • Ideal also for wide field foto lens
  • Made from optical glass with Neodymoxid
SCOPE OF DELIVERY
  • Deep Sky Filter 77mm
  • Dust protection case
Colour: black
Field of application [Telescope-filter]: Light Pollution Filter for Astrophotography
Telescope filter type: Nebula Filter

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EXPLORE SCIENTIFIC 2" H-Alpha Nebula Filter 12nm
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 slightly 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.FEATURESH-Alpha filters are used for astrophotography exclusivelyAllows photography of emission nebulae that glow in the light of red hydrogenMany of these emission nebulae are only visible in their full expansion in the photos taken with this filterBlocks almost all artificial light, especially from mercury and sodium vapor lampsOnly allows the emission line of red hydrogen to pass throughTransmission bandwidth: 12 nmAllows more contrast and detail for all urban astrophotographersIdeal for use near cities, in slightly brightened skiesIndividual test certificate included to guarantee you receive a premium filterSCOPE OF DELIVERY1x 2'' H-Alpha Nebula Filter

€95.00* €189.00* (49.74% saved)