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
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 disturbing light of mercury and sodium vapor lamps is effectively blocked. The effect is amazing: Suddenly, nebulae become visible on the photos in places 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 are only visible and 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. FEATURESH-Alpha filters are used exclusively for astrophotographyAllows photography of emission nebulae that glow in the light of red hydrogenMany of these emission nebulae are only visible in their full expansion on 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 throughNarrow band version for difficult urban conditionsTransmission bandwidth: 7 nmAllows more contrast and detail for all urban astrophotographersIdeal for use near cities, in heavy brightened skiesIndividual test certificate included to guarantee you receive a premium filterSCOPE OF DELIVERY1x 1.25'' H-Alpha Nebula Filter
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.netTest 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
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.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. FEATURESH-Alpha filters are used for astrophotography exclusively Allows photography of emission nebulae that glow in the light of red hydrogenMany of these emission nebulae are only visible in their full expansion in 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 throughNarrow band version for difficult urban conditionsTransmission bandwidth: 7 nmAllows more contrast and detail for all urban astrophotographersIdeal for use near cities, in heavy brightened skiesIndividual test certificate included to guarantee you receive a premium filterSCOPE OF DELIVERY1x 2'' H-Alpha Nebula Filter
L-eNhance Filter for deep sky nebula photography from the cityThe relentless spread or urbanization and its associated light pollution have become a growing problem for all amateur astro photographers. The current solutions to the problem can be expensive and might include the purchase of a monochrome camera, several types of narrowband filters and a filter wheel. Especially with inexpensive newtonian telescopes, double-lens ED refractors or even achromats, the L-eNhance filters open up completely new possibilities for the capture of high-class astronomical images even out of the light polluted city. CMOS cameras can deliver images like monochrome cameras. This new generation of filters makes it possible to take amazing astrophotos directly from the light-polluted city with all its artificial light sources. The narrow bandpass for the wavelengths of O-III, H-Beta and H-Alpha and the almost complete attenuation of the interfering light sources of these new filters make this an ideal solution.
L-eNhance Description L-eNhance provides an economical and practical solution for amateurs. It is a tri-band pass filter which has been designed for DSLR (digital SLR), color CMOS and monochrome CCD cameras. The convenience and cost-effectiveness of this filter allows amateurs to take a rich selection of astronomical images, even in bright, heavily light-polluted areas. We believe the design of our L-eNhance filter is a technical innovation among filters. It effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. The performance of this filter delivers images that superbly control the impact from light polluted skies. Main Use and PerformanceThis new generation of filters makes it possible to take amazing astrophotos directly from the light-polluted city with all its artificial light sources. The narrow bandpass for the wavelengths of O-III, H-Beta and H-Alpha and the almost complete attenuation of the interfering light sources do not require very large or extremely expensive telescopes. No, especially with inexpensive newtonian telescopes, double-lens ED refractors or even achromats, these filters open up completely new possibilities for high-class astronomical images. Furthermore, with the help of these filters, CMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras. WARNING: These nebula filters are not designed for sun observation. DO NOT LOOK AT THE SUN WITH THIS FILTER. You will go BLIND if you ignore this warning. Coating technology L-eNhance has a multiple
anti-reflective coating on the optical substrate. The L-eNhance filter uses a
precision coating based on ion deposition coating technology. This
ensures durability and scratch resistance as well as stability on the
CWL (central wavelength), which is not affected by temperature changes.
Absolute precision and homogeneity of the coatings as well as maximum
values for transmission in the passband and optical density in the
off-band range are guaranteed for all filters. FEATURES Professional photographic filter for astronomy Improves deep sky emission nebula photography Best choice for enhanced light pollution suppression For taking pictures also from highly light-polluted areas Tri-band filter with high transmission for O-III, H-Beta and H-Alpha linesDoes not require very large or extremely expensive telescopesExcellent results also with inexpensive newtonian telescopes, double-lens ED refractors or even achromatsCMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras Balanced colour for a natural image Filter diameter: 2,0 inches / 50,8 mm Connecting thread: M48x0.75mmSelected optical glass material Spectrum: 300-1000nm Off-Band Blocking: > 99% Surface Quality: 60/40 (Refer to MIL-O-13830) Fine-optically polished to ensure accurate 1/4 wavefront and highest parallelism over the both surfacesHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm&500nm and H-beta 486nm).
SCOPE OF DELIVERY L-eNhance filter (1pc) Dust protection box (1pc)
L-eXtreme Filter for deep sky nebula photography from the city The relentless spread or urbanization and its associated light pollution have become a growing problem for all amateur astro photographers. The current solutions to the problem can be expensive and might include the purchase of a monochrome camera, several types of narrowband filters and a filter wheel. Especially with inexpensive but fast newtonian telescopes, double-lens ED refractors or even achromats, the L-eXtreme filters open up completely new possibilities for high-class astronomical images even from the light polluted city. CMOS cameras can deliver images like monochrome cameras. This new generation of filters makes it possible to take amazing astrophotos directly from the heavily light-polluted city with all its artificial light sources. The dual narrow bandpass for the wavelengths of O-III and H-Alpha and the almost complete attenuation of the interfering light sources of these new filters make this an ideal solution.
L-eXtreme Description L-eXtreme is a two 7nm narrow bandpass filter which can be used with one-shot color cameras like DSLRs (digital SLR), color CMOS and monochrome CCD cameras. The convenience and cost-effectiveness of this filter allows amateurs to photograph rich emission nebulas, even in bright, heavily light-polluted skies. The L-eXtreme filter is the better choice for fast optical systems at a competitive price. It isolates the H-Alpha and Oxygen III nebula emission lines so that the contrast and signal-to-noise ratio between nebulae are maximized. The design of our L-eNhance filter is a technical innovation among filters. For people who live in heavily light polluted areas or when the moon is out, the L-eXtreme is a very good choice.
Main Use and Performance This new generation of filters makes it possible to take amazing astrophotos directly from the light-polluted city with all its artificial light sources. The narrow bandpass for the wavelengths of O-III and H-Alpha and the almost complete attenuation of the interfering light sources do not require very large or extremely expensive telescopes. No, especially with inexpensive but fast newtonian telescopes, double-lens ED refractors or even achromats, these filters open up completely new possibilities for high-class astronomical images. Furthermore, with these filters CMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras. WARNING: These nebula filters are not designed for sun observation. DO NOT LOOK AT THE SUN WITH THIS FILTER. You will go BLIND if you ignore this warning. Coating technology L-eXtreme has a multiple
anti-reflective coating on the optical substrate. The L-eXtreme filter uses a
precision coating based on ion deposition coating technology. This
ensures durability and scratch resistance as well as stability on the
CWL (central wavelength), which is not affected by temperature changes.
Absolute precision and homogeneity of the coatings as well as maximum
values for transmission in the passband and optical density in the
off-band range are guaranteed for all filters. FEATURESProfessional photographic filter for astronomyImproves deep sky emission nebula photography Best choice for extreme light pollution suppression For taking pictures also from highly light-polluted areas Dual-narrow-band filter with high transmission for O-III and H-Alpha linesDoes not require very large or extremely expensive telescopesExcellent results also with fast inexpensive newtonian telescopes, double-lens ED refractors or even achromatsL-eXtreme filter is the better choice for fast systems at a competitive priceCMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras Filter diameter: 2.0 inches / 50.8 mmConnecting thread: M48x0.75mmSelected optical glass material Spectrum: 300-1000nm Off-Band Blocking: > 99 % Surface Quality: 60/40 (Refer to MIL-O-13830) Fine-optically polished to ensure accurate 1/4 wavefront and highest parallelism over the both surfacesHigh transmission at major nebula emission lines (i.e. H-alpha 656nm and OIII 496nm&500nm)SCOPE OF DELIVERY L-eXtreme filter (1 pc) Dust protection box (1 pc)
LPS filter L-Pro for deep sky nebula constellation photography.
The relentless spread or urbanization and its associated light pollution
have become a growing problem for all amateur astro photographers. The
current solutions to the problem can be expensive and might include the
purchase of a monochrome camera, several types of narrowband filters and
a filter wheel. Especially with inexpensive newtonian telescopes,
double-lens ED refractors or even achromats, the L-Pro filters open
up completely new possibilities for the capture of high-class
astronomical images even out of the light polluted city. CMOS cameras
can deliver images like monochrome cameras. This new generation of
filters makes it possible to take amazing astrophotos directly from the
light-polluted city with all its artificial light sources.L-Pro is a multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro is the best choice for light pollution suppression. L-Pro description L-Pro (L-Professional) filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural areas with heavy light pollution.
L-Pro is a multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro is the best choice for light pollution suppression. Main use and performance Suitable for visual observation and astrophotography.
L-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations.
L-Pro filter alone can suppress infrared wavelength, and thus can be used at ease for ''L'' image shootings with CCDs.
Light pollution filters do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. WARNING: These nebula filters are not designed for sun observation. DO NOT LOOK AT THE SUN WITH THIS FILTER. You will go BLIND if you ignore this warning.Coating technology L-Pro has a multiple anti-reflective coating on the optical substrate. The L-Pro filter uses a precision coating based on ion deposition coating technology. This ensures durability and scratch resistance as well as stability on the CWL (central wavelength), which is not affected by temperature changes. Absolute precision and homogeneity of the coatings as well as maximum values for transmission in the passband and optical density in the off-band range are guaranteed for all filters. FEATURES Professional visual and photographic filter for astronomy Improves deep sky nebula constellation photography Best choice for broadband light pollution suppressionFilter diameter: 2.0 inch / 50.8mm Connecting thread: M48x0.75mmSelected optical glass material Spectrum: 380-750nm Surface Quality: 60/40 (Refer to MIL-O-13830) Fine-optically polished glass to ensure accurate 1/4 wavefront and highest parallelism over the both surfaces High transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm&500nm, SII 672nm and H-beta 486nm)Precision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm)SCOPE OF DELIVERY L-Pro filter (1pc) Dust protection box (1pc)
L-eXtreme Filter for deep sky nebula photography from the city The
relentless spread or urbanization and its associated light pollution
have become a growing problem for all amateur astro photographers. The
current solutions to the problem can be expensive and might include the
purchase of a monochrome camera, several types of narrowband filters and
a filter wheel. Especially with inexpensive but fast newtonian
telescopes, double-lens ED refractors or even achromats, the L-eXtreme filters
open up completely new possibilities for high-class
astronomical images even from the light polluted city. CMOS cameras can
deliver images like monochrome cameras. This new generation of filters
makes it possible to take amazing astrophotos directly from the heavily
light-polluted city with all its artificial light sources. The dual
narrow bandpass for the wavelengths of O-III and H-Alpha and the almost
complete attenuation of the interfering light sources of these new
filters make this an ideal solution.
L-eXtreme Description L-eXtreme is a
two 7nm narrow bandpass filter which can be used with one-shot color
cameras like DSLRs (digital SLR), color CMOS and monochrome CCD
cameras. The convenience and cost-effectiveness of this filter allows
amateurs to photograph rich emission nebulas, even in bright, heavily light-polluted skies. The L-eXtreme filter is the better choice for fast optical systems at a competitive price. It isolates the
H-Alpha and Oxygen III nebula emission lines so that the contrast and
signal-to-noise ratio between nebulae are maximized. The design of our
L-eNhance filter is a technical innovation among filters. For people who
live in heavily light-polluted areas or when the moon is out,
the L-eXtreme is a very good choice.
Main Use and Performance This
new generation of filters makes it possible to take amazing astrophotos
directly from the light-polluted city with all its artificial light
sources. The narrow bandpass for the wavelengths of O-III and H-Alpha
and the almost complete attenuation of the interfering light sources do
not require very large or extremely expensive telescopes. No, especially
with inexpensive but fast newtonian telescopes, double-lens ED
refractors or even achromats, these filters open up completely new
possibilities for high-class astronomical images.
Furthermore, with these filters CMOS colour cameras can
deliver an image quality that comes close to CCD monochrome cameras. WARNING:
These nebula filters are not designed for sun observation. DO NOT LOOK
AT THE SUN WITH THIS FILTER. You will go BLIND if you ignore
this warning. Coating technology L-eXtreme has a multiple
anti-reflective coating on the optical substrate. The L-eXtreme filter uses a
precision coating based on ion deposition coating technology. This
ensures durability and scratch resistance as well as stability on the
CWL (central wavelength), which is not affected by temperature changes.
Absolute precision and homogeneity of the coatings as well as maximum
values for transmission in the passband and optical density in the
off-band range are guaranteed for all filters. FEATURESProfessional photographic filter for astronomyImproves deep sky emission nebula photography Best choice for extreme light pollution suppression For taking pictures also from highly light-polluted areas Dual-narrow-band filter with high transmission for O-III and H-Alpha linesDoes not require very large or extremely expensive telescopesExcellent results also with fast inexpensive newtonian telescopes, double-lens ED refractors or even achromatsL-eXtreme filter is the better choice for fast systems at a competitive priceCMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras Filter diameter: 1.25 inches / 31.7 mmConnecting thread: M28x0.6mmSelected optical glass material Spectrum: 300-1000nm Off-Band Blocking: > 99 % Surface Quality: 60/40 (Refer to MIL-O-13830) Fine-optically polished to ensure accurate 1/4 wavefront and highest parallelism over the both surfacesHigh transmission at major nebula emission lines (i.e. H-alpha 656nm and OIII 496nm&500nm)SCOPE OF DELIVERY L-eXtreme filter (1 pc) Dust protection box (1 pc)
L-eNhance Filter for deep sky nebula photography from the cityThe
relentless spread or urbanization and its associated light pollution
have become a growing problem for all amateur astro photographers. The
current solutions to the problem can be expensive and might include the
purchase of a monochrome camera, several types of narrowband filters and
a filter wheel. Especially with inexpensive newtonian telescopes,
double-lens ED refractors or even achromats, the L-eNhance filters open up
completely new possibilities for the capture of high-class astronomical
images even out of the light polluted city. CMOS cameras can deliver
images like monochrome cameras. This new generation of filters makes it
possible to take amazing astrophotos directly from the light-polluted
city with all its artificial light sources. The narrow bandpass for the
wavelengths of O-III, H-Beta and H-Alpha and the almost complete
attenuation of the interfering light sources of these new filters make
this an ideal solution.
L-eNhance Description L-eNhance provides an
economical and practical solution for amateurs. It is a tri-band pass
filter which has been designed for DSLR (digital SLR), color CMOS and
monochrome CCD cameras. The convenience and cost-effectiveness of this
filter allows amateurs to take a rich selection of astronomical images,
even in bright, heavily light-polluted areas. We believe the
design of our L-eNhance filter is a technical innovation among filters.
It effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula
emission lines and achieves a maximum transmission of up to 90%. The
performance of this filter delivers images that superbly control the
impact from light polluted skies. Main Use and PerformanceThis
new generation of filters makes it possible to take amazing astrophotos
directly from the light-polluted city with all its artificial light
sources. The narrow bandpass for the wavelengths of O-III, H-Beta and
H-Alpha and the almost complete attenuation of the interfering light
sources do not require very large or extremely expensive telescopes. No,
especially with inexpensive newtonian telescopes, double-lens ED
refractors or even achromats, these filters open up completely new
possibilities for high-class astronomical images.
Furthermore, with the help of these filters, CMOS colour cameras can
deliver an image quality that comes close to CCD monochrome cameras. WARNING:
These nebula filters are not designed for sun observation. DO NOT LOOK
AT THE SUN WITH THIS FILTER. You will go BLIND if you ignore
this warning. Coating technology L-eNhance has a multiple
anti-reflective coating on the optical substrate. The L-eNhance filter uses a
precision coating based on ion deposition coating technology. This
ensures durability and scratch resistance as well as stability on the
CWL (central wavelength), which is not affected by temperature changes.
Absolute precision and homogeneity of the coatings as well as maximum
values for transmission in the passband and optical density in the
off-band range are guaranteed for all filters. FEATURES Professional photographic filter for astronomy Improves deep sky emission nebula photography Best choice for enhanced light pollution suppression For taking pictures also from highly light polluted areas Tri-band filter with high transmission for O-III, H-Beta and H-Alpha linesDoes not require very large or extremely expensive telescopesExcellent results also with inexpensive newtonian telescopes, double-lens ED refractors or even achromatsCMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras Balanced colour for a natural image
Filter diameter: 1.25 inch / 31.7mm Connecting thread: M28,5 x 0,6mm (Eyepiece thread 1.25 inch)Selected optical glass material Spectrum: 300-1000nm Off-Band Blocking: > 99% Surface Quality: 60/40 (Refer to MIL-O-13830) Fine-optically polished to ensure accurate 1/4 wavefront and highest parallelism over the both surfacesHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm&500nm and H-beta 486nm).
SCOPE OF DELIVERY L-eNhance filter (1pc) Dust protection box (1pc)
LPS filter L-Pro for deep sky nebula constellation photography.The relentless spread or urbanization and its associated light pollution
have become a growing problem for all amateur astro photographers. The
current solutions to the problem can be expensive and might include the
purchase of a monochrome camera, several types of narrowband filters and
a filter wheel. Especially with inexpensive newtonian telescopes,
double-lens ED refractors or even achromats, the L-Pro filters open
up completely new possibilities for the capture of high-class
astronomical images even out of the light polluted city. CMOS cameras
can deliver images like monochrome cameras. This new generation of
filters makes it possible to take amazing astrophotos directly from the
light-polluted city with all its artificial light sources.
L-Pro is a multi-bandpass filter which offers better color balance by
maximizing the transmission band. The balanced transmission allows
astrophotos to be taken with minimal color cast to broadband emission
objects such as galaxies, reflection nebulae and globular star clusters.
L-Pro is the best choice for light pollution suppression. L-Pro description L-Pro
(L-Professional) filter is designed to improve the visibility of
various deepsky objects. By selectively reducing the transmission of
wavelengths of light pollutants, specifically those produced by
artificial lightings including mercury vapor lamps, both high & low
pressure sodium vapor lights and the unwanted natural light caused by
neutral oxygen emission in our atmosphere (i.e. skyglow). Together with
the highly transparent in main nebula emission lines at OIII (496nm and
500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as
SII (672nm), the filter is suitable for enhancing the contrast and
details for both visual and photograghic purpose at sub-rural areas with
heavy light pollution.
L-Pro is a multi-bandpass filter which offers better color balance by
maximizing the transmission band. The balanced transmission allows
astrophotos to be taken with minimal color cast to broadband emission
objects such as galaxies, reflection nebulae and globular star clusters.
L-Pro is the best choice for light pollution suppression. Main use and performance Suitable
for visual observation and astrophotography.
L-Pro filter has a very low transmission reduction rate against
continuous spectrum space objects, and thus is quite effective in
suppressing light pollution sources when shooting galaxies, reflection
nebulae and globular star clusters. The same holds true for visual star
observations.
L-Pro filter alone can suppress infrared wavelength, and thus can be
used at ease for ''L'' image shootings with CCDs.
Light pollution filters do not eliminate the effects of light pollution
or increase the object’s brightness. In many cases, they increase the
contrast between nebula and night sky, not brightening the nebula. WARNING: These nebula filters are not designed for sun observation. DO NOT LOOK AT THE SUN WITH THIS FILTER. You will go BLIND if you ignore this warning.Coating technology L-Pro has a multiple anti-reflective coating on the optical substrate. The L-Pro filter uses a precision coating based on ion deposition coating technology. This ensures durability and scratch resistance as well as stability on the CWL (central wavelength), which is not affected by temperature changes. Absolute precision and homogeneity of the coatings as well as maximum values for transmission in the passband and optical density in the off-band range are guaranteed for all filters.FEATURES Professional visual and photographic filter for astronomy Improves deep sky nebula constellation photography Best choice for broadband light pollution suppressionFilter diameter: 1.25 inch / 31.7mm Connecting thread: M28.5 x 0.6mm (Eyepiece thread 1.25 inch)Selected optical glass material Spectrum: 380-750nmSurface Quality: 60/40 (Refer to MIL-O-13830) Fine-optically polished glass to ensure accurate 1/4 wavefront and highest parallelism over the both surfaces High transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm&500nm, SII 672nm and H-beta 486nm)Precision
off-band blocking, specifically the major emission lines of artificial
light pollution (i.e. Na 589nm, Hg 435nm and 578nm)SCOPE OF DELIVERY L-Pro filter (1pc) Dust protection box (1pc)
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The cookie is used to differentiate the cache for different scenarios and page users.
Session:
The session cookie stores your shopping data over several page views and is therefore essential for your personal shopping experience.
Payment provider (Stripe) fraud prevention
Payment provider (Stripe) fraud prevention
CSRF token:
The CSRF token cookie contributes to your security. It strengthens the security of forms against unwanted hacker attacks.
Google Tag Manager debug mode:
Allows to run the Google Tag Manager in debug mode.
Activated cookies:
Saves which cookies have already been accepted by the user for the first time.
Marketing cookies are used to display advertisements on the website in a targeted and individualized manner across multiple page views and browser sessions.
Google Advertising
Google Ads:
Advertising Targeting
Tracking cookies help the shop operator to collect and evaluate information about the behaviour of users on their website.
Matomo Tracking:
Tracking statistics for the optimization of user workflows. No personal data is stored.
Matomo:
The cookie is used to track website activity. The information collected is used for site analysis and to generate statistics.
Google Analytics:
Google Analytics is used for traffic analysis of the website. Thereby statistics about website activities can be created and read out.
Cookies used for statistics and shop performance metrics.
Conversion and usertracking via Google Tag Manager
Google Tag Manager:
Cookie from Google to control the advanced script and event handling.
Google Analytics:
Cookie from Google for website analysis. Generates statistical data about how the visitor uses the website.
YouTube video
Location maps:
We use OpenStreetMap as tile provider to show you visually the location of our stores and merchants.
Recently viewed products:
The cookie stores the most recently viewed products in order to suggest them on further product pages.
Wishlist
Customers also viewed:
The cookie stores the most recently viewed products in order to suggest them to other customers on product pages.
Facebook
Vimeo
Dailymotion
Um Videos anzusehen, müssen Sie Cookies von Drittanbietern akzeptieren:
Facebook
Vimeo
Dailymotion
Um Videos anzusehen, müssen Sie Cookies von Drittanbietern akzeptieren:
Facebook
Vimeo
Dailymotion
Um Videos anzusehen, müssen Sie Cookies von Drittanbietern akzeptieren:
Facebook
Vimeo
Dailymotion
Cookies
We use cookies to personalise and improve content and services, deliver relevant advertising and provide a secure experience. You can review your cookie controls at any time. Learn more about the use and control of cookies in our privacy policy.Imprint