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Filters

Astronomical filters come in many different shapes, sizes and flavors. Visual filters are used to help visual observation. Examples include a moon filter to dim the bright moonlight or a light pollution filter to reduce the terrible effects of light pollution. Photographic filters are used to enhance photographic results. Examples of this are narrowband filters to photograph in, for example, H-alpha light or RGB filters to do color imaging with a black-and-white camera!

Photographic and visual filters can make a huge difference!

If a filter is indicated for visual use, it can often also be used for photography. The indication 'Filter application' is therefore only indicative.

Can't find what you are looking for? Contact Robtics. We are happy to help!

Filters

Showing 1-24 of 85 item(s)

Filters

Robtics UHC - Ultra High Contrast Light Pollution Filter - 1.25 inch

ROB_UHC1.25

€35.00

The Robtics UHC filter reduces light pollution by making the sky background darker and effectively increasing the contrast between the background and deepsky nebulae. The Robtics UHC filter is filtering in a more aggressive way and because of this is even more effective in reducing light pollution then the Robtics Clear Sky Filter! The filter can be...

Filters

Optolong SII 6.5nm Narrowband Telescope Filter - 36mm

OL_OIII6.5-36

€174.00

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

Filters

Optolong LRGB Filter Set - 2"

OL_LRGB-2

€314.00

Optolong Deep Sky Broadband CCD Filters: Luminance, Red, Green, and Blue

Filters

Optolong LRGB Ha SII & OIII Telescope Filter Kit - 2"

OL_LRGBHASIIOIII-2

€880.00

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

Filters

Optolong Venus U Filter 1.25

OL_VENUS-U1

€123.00

Filters

Optolong L-eXtreme Dual-band Light Pollution Filter - 1.25"

OL_LEXT1

€218.00

Optolong Dual-band light pollution filter - 1.25-inch size. 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.

Filters

Optolong OIII 6.5nm Narrowband Telescope Filter - 1.25"

OL_OIII6.5-1

€139.00

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

Filters

Optolong CCD Filterset 12nm OIII/ SII and 7nm H-Alpha 1.25 inch

OL_SHO12-1

€325.00

Filters

Optolong H-alpha 7nm Narrowband Telescope Filter - 1.25"

OL_HA7-1

€153.00

Optolong H-alpha 7nm 1.25" 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

Filters

Optolong OIII 6.5nm Narrowband Telescope Filter - 2"

OL_OIII6.5-2

€223.00

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

Filters

Optolong LRGB Filter Set - 31mm

OL_LRGB-31

€254.00

Optolong Deep Sky Broadband CCD Filters: Luminance, Red, Green, and Blue

Filters

Optolong L-Pro Light Pollution Filter - Canon APS-C DSLR Clip Filter

OL_LPRO-EOS

€218.00

Use this Optolong filter for most emission nebulae, reflection nebulae, and dark nebulae Suitable for both visual photographic observations Effective in suppressing light pollution sources

Filters

Robtics Variable Polarising Filter 1.25

ROB_VARPOL1

€45.00

-€36.00

Filters

Optolong L-Quad Enhance Filter (L-QEF) quad bandpass Light pollution suppression Filter...

OPT_L-QEF2

€199.00 €235.00

Optolong L-Quad Enhance Filter (L-QEF) quad bandpass light pollution suppression filter - 2 inch L-QEF cuts out light pollution from mercury and sodium lamps and produces a nice broadband image with minimal color cast. This filter is a broadband filter that suppresses light pollution wavelengths. It is good for star clusters, dark and reflection nebulae,...

Filters

Optolong SII 3nm Narrowband Mounted Filter - 2"

OL_SII3-2

€383.00

Optolong filters for tricolor CCD astrophotography Narrowband imaging with SHO filters can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks

Filters

Optolong LRGB Ha SII & OIII Telescope Filter Kit - 1.25"

OL_LRGBHASIIOIII-1

€580.00

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

Filters

Optolong L-eNhance Light Pollution Filter - 1.25"

OL_LNH1

€162.00

Optolong Light Pollution Suppression Filter The bandwidths are 24nm for OIII and H-beta, 10nm for H-a Isolates H-alpha, H-beta, and Oxygen III Nebula Emission Lines Maximum Transmission of up to 90%

Filters

Optolong Ha SII OIII Narrowband Telescope Filter Kit - 2"

OL_HASIIOIII-2

€628.00

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)

Filters

Robtics UHC Filter 2 inch

ROB_UHC2

€99.00

Filters

Robtics Clear Sky Filter - Light pollution Filter for Camera Lens - 77mm

ROB_CSF77

€85.00

Robtics Clear Sky filter blocks city light pollution to improve contrast Threads to the 77mm front of your camera lens

Filters

Optolong UHC Filter Ultra High Contrast Telescope Filter - 2"

OL_UHC2

€90.00

Optolong UHC Light Pollution Filter

Filters

Optolong OIII 6.5nm Narrowband Telescope Filter - 31mm

OL_OIII6.5-31

€165.00

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

Filters

Robtics Visual blue Filter 31.75mm (1¼ inch)

ROB_F1B

€19.50

Filters

Optolong Ha-Alpha 12nm 1.25 Filter

OL_HA12-1

€106.00

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