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Pokazano 49-72 z 85 pozycji

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Optolong H-alpha 7nm Narrowband Telescope Filter - 2"

Optolong H-alpha 7nm 2" Filter A very narrow emission-line filter Permits a 7nm bandwidth of light (focused on the 656nm wavelength) through Blocks transmission of contrast-killing light pollution wavelengths

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Optolong L-eXtreme Dual-band Light Pollution Filter - 2"

Optolong Dual-band light pollution filter - 2-inch. The L-eXtreme filter is dual-band that passes H-alpha and O-iii emission lines. It isolates these two nebula emission lines so that the contrast and signal-to-noise ratio between nebulae were maximized. These two elements (Hydrogen and Oxygen) factor greatly in the scientific exploration of life.

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Robtics Clear Sky Filter - Light pollution Filter for Camera Lens - 72mm

Robtics Clear Sky filter blocks city light pollution to improve contrast Threads to the 72mm front of your camera lens

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Optolong CLS CCD Filter 1.25

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Optolong LRGB Ha Kit Telescope Filter Kit - 36mm

Optolong Deep Sky CCD Imaging Filters: Luminance, Red, Green, and Blue Narrowband Filter H-alpha (7nm)

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Optolong LRGB Ha Kit Telescope Filter Kit - 31mm

Optolong Deep Sky CCD Imaging Filters: Luminance, Red, Green, and Blue Narrowband Filter H-alpha (7nm)

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Optolong L-Pro Light Pollution Filter - 1.25"

Optolong Optolong L-Pro filter is perfect for astrophotographers fighting light pollution Best used for imaging most emission nebulae, reflection nebulae, and dark nebulae Suitable for both visual photographic observations Effective in suppressing light pollution sources

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Optolong L-eNhance Light Pollution Filter - 2"

The convenience and cost effectiveness of this Optolong filter allows amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas. Isolates H-alpha, H-beta, and Oxygen III Nebula Emission Lines The bandwidths are 24nm for OIII and H-beta, and 10nm for Ha Maximum Transmission of up to 90%

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Robtics UHC Filter 1.25

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Optolong L-eNhance Light Pollution Filter - EOS APS-C Clip Filter

The convenience and cost effectiveness of this Optolong filter allows amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas. Isolates H-alpha, H-beta, and Oxygen III Nebula Emission Lines The bandwidths are 24nm for OIII and H-beta, and 10nm for Ha Maximum Transmission of up to 90%

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Robtics Visual Red Filter 31.75mm (1¼ inch)

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Optolong H-alpha 7nm Narrowband Telescope Filter - 36mm

Optolong H-alpha 7nm 36mm Filter A threaded version of this filter is pictured. Actual product is a 36mm unmounted filter A very narrow emission-line filter Permits a 7nm bandwidth of light (focused on the 656nm wavelength) through Blocks transmission of contrast-killing light pollution wavelengths

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Robtics Clear Sky - Light Pollution Filter - 1.25 inch

The Robtics Clear Sky filter reduces light pollution by making the sky background darker and effectively increasing the contrast between the background and deepsky nebulae. The filter can be screwed in the bottom of any 1.25 inch sized eyepiece, diagonal, barlow or accessory that has internal filter threading. Works perfectly on objects like Orion nebula...

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Optolong Clear Sky Camera Filter - 82mm

Optolong Optolong Clear Sky filter blocks city light pollution to improve contrast Threads to the front of your camera lens

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Optolong CLS Filter City Light Suppression Telescope Filter - 2"

This Optolong CLS filter is suitable for color CCD cameras, unmodified DSLR cameras, and visual use 95% transmission of main nebula emission lines: H-beta 486nm, OIII 496nm, OIII 500nm, H-alpha 656nm, and SII 672nm

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Optolong LRGB Ha SII & OIII Telescope Filter Kit - 31mm

OL_LRGBHASIIOIII-31

Optolong Deep Sky CCD Imaging Filters: Luminance, Red, Green, and Blue Narrowband Filters: H-alpha 7nm, SII, and OIII

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Optolong UHC Filter Ultra High Contrast Telescope Filter - 1.25"

Optolong UHC Light Pollution Filter

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Robtics Visual orange Filter 31.75mm (1¼ inch)

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Robtics OIII Filter 2 inch

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Optolong SII 6.5nm Narrowband Telescope Filter - 1.25"

Optolong SII 6.5nm CCD Deep Sky Imaging Filter 80% peak transmission

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Optolong L-eXtreme F2 - fast optics highspeed dual-band narrowband pass filter - 2inch

Optolong L-eXtreme F2 is a dual-band (500.7 nm and 656.28 nm, FWHM=7 nm) narrowband pass filter that meets the requirements for transmission at continuously varying angles. Astronomically characterized spectral lines (OIII, Ha) as the main transmission wavelengths, the OIII and H-Alpha nebula emission lines pass accurately at f2 - f3.3 Focal Ratio.

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Optolong LRGB Ha Kit Telescope Filter Kit - 2"

Optolong Deep Sky CCD Imaging Filters: Luminance, Red, Green, and Blue Narrowband Filter H-alpha (7nm)

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Optolong Ha SII OIII Narrowband Telescope Filter Kit - 1.25"

Optolong filters for tricolor CCD astrophotography Narrowband imaging with SHO set can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks Hubble look of images can be made by the combination of H-alpha, OIII-CCD, and SII-CCD, such as the famous "Pillars of Creation" (M16 Eagle Nebula)

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Optolong LRGB Ha Kit Telescope Filter Kit - 1.25"

Optolong Deep Sky CCD Imaging Filters: Luminance, Red, Green, and Blue Narrowband Filter H-alpha (7nm)

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