DSLR Filters

4 products

1. 

   Optolong CLS Filter - Clip filter for Canon EOS APS-C Cameras [OPTO-APS-EOS-C-CLS]

   $137.67 CAD $172.09 CAD

   1 in stock On sale

   Back Order / Waiting List

   Optolong: The Optolong CLS filter will improve contrast and increase the visibility of weak outer regions on most emitted, planetary and supernova residual nebulae from polluted locations in a color imaging camera.

   The Optolong CLS-CCD filter works by specifically reducing the transmission of wavelengths of light pollution, in particular the artificial type caused by vapors of sodium vapor and mercury vapor at high and low pressure. The use of a CLS filter will also increase the contrast by reducing the light radiation caused by the neutral oxygen emissions normally observed in the atmosphere.

   The CLS EOS APS-C Clip Filter consists of multi-layered Schott glass with ion deposition technology to ensure scratch resistance and stability on the central wavelength, or CWL. The filter cell is made of light and solid metal, CNC machined, sandblasted, black anodized and then laser engraved.

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2. 

   Optolong CLS-CCD Filter - Clip filter for Canon EOS APS-C Cameras [OPTO-APS-EOS-C-CLS-CCD]

   $137.67 CAD $172.09 CAD

   1 in stock On sale

   Back Order / Waiting List

   Optolong: The Optolong CLS-CCD filter will improve contrast and increase the visibility of weak outer regions on most emitted, planetary and supernova residual nebulae from polluted locations in a color imaging camera.

   The infrared wavelength of 700-1100nm is cut on the Optolong CLS-CCD filter, which makes it different from the standard CLS filter and makes the CLS-CCD a photographic filter only. A separate IR-cut filter is not necessary when imaging with the CLS-CCD since the IR has already been cut.

   The Optolong CLS-CCD filter works by specifically reducing the transmission of wavelengths of light pollution, in particular the artificial type caused by vapors of sodium vapor and mercury vapor at high and low pressure. The use of a CLS-CCD filter will also increase the contrast by reducing the light radiation caused by the neutral oxygen emissions normally observed in the atmosphere.

   The Opterster CLS-CCD EOS APS-C Clip Filter consists of multi-layered Schott glass with ion deposition technology to ensure scratch resistance and stability on the central wavelength, or CWL. The filter cell is made of light and solid metal, CNC machined, sandblasted, black anodized and then laser engraved.

   Using a Clip Filter on Your Canon APS-C Camera

   The Optolong CLS-CCD clip filter can be inserted without tools; Simply use your fingers to insert or remove the filter. Once inserted correctly, it can not fall unintentionally.
   No modification of the Canon EOS DSLR case is required. All lens functions will work with the installed clip, including focus, screen and image stabilization,
   The Optolong fog filter prevents dust from settling on the sensor during long exposures.
   APS-C clip filters are compatible with EOS APS-C series cameras, including EOS 1100D / 600D / 60D, and so on. If you have a full frame EOS camera, Optolong also offers filters for these cameras.
   Optolong Clip filters do not work with the Canon EF-S series lenses. These lenses invade the interior space of the camera body that would normally be supported by the clip filter.
   To use the EOS / T2 and 2 "adapters to attach your camera to a telescope, you must first insert the Clip-Filter and then install the desired lens adapters.

   
   Transmission characteristics of the CLS-CCD filter

   95% transmission H-Alpha 656nm
   95% transmission OIII 496nm and 500nm
   95% transmission SII 672nm
   95% H-Beta transmission 486nm
   High transmission NII 654nm and 658nm
   0.1% Hg transmission at 435 nm and 578 nm
   0.1% Na transmission at 589 nm
   Blocks IR transmission 700-1100nm

   
   Quality filter materials:

   • Schott B260 substrate material from Germany, 1.0 mm thick
   • Anodized and CNC machined aero-metal filter cell to provide the largest net opening; Laser engraved to avoid fading
   • Several layers of cement-free anti-reflective coatings applied by evaporation from a gun to electron beams with ion assisted deposition
   • Optolong Filter Manufacturing Processes and Parameters
   • The filter substrate is optically polished at a 1/4 wave and parallelism <30 on both surfaces
   • The quality of the surface, according to MIL-O-13830, is 60/40
   • The main emission lines of nebulae have a transmission of 95%
   • Out-of-band transmission (main artificial radiation) is 0.1%
   • High-pass transmission of the bandwidth and out-of-band optical density is ensured by Optolong's planetary rotation system, a homogeneous and precise coating procedure
   • Each filter comes with a plastic housing with high-pressure EVA liner
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3. 

   Optolong H-Alpha 7nm Filter - Clip filter for Canon EOS APS-C Cameras [OPTO-APS-EOS-C-HA7NM]

   $258.55 CAD $323.19 CAD

   1 in stock On sale

   Back Order / Waiting List

   Optolong: The Optolong H-Alpha 7nm is a very narrow emission-line filter that works by permitting a 7nm bandwidth of light, focused on the 656nm wavelength through, and blocking the transmission of contrast-killing light pollution wavelengths. Wavelengths that are in charge of natural light pollution, or skyglow, are radically decreased, as is artificial light pollution brought about by high and low pressure sodium and mercury vapor lights. The outcome is a high contrast image that uncovers the H-alpha line in all its brilliance.

   This Optolong H-Alpha EOS APS Clip filter will give a well defined contrast between the skyglow ackground and H-alpha transmitting objects, but since it has a FWHM of only 7nm, you won't see the same number of stars in the last picture as you would with the Optolong 12nm H-Alpha Filter. Utilize this filter alone for CCD or DSLR imaging, or utilize together with OIII 6.5nm and SII 6.5nm filters to get a tricolor picture of vaporous nebulae from light polluted areas.

   The Optolong EOS APS H-Alpha 7nm Filter is made with Schott glass that has been multi-coated with  ion-assisted deposition technology to guarantee scratch resistance and soundness on the central wavelength, or CWL. The filter cell is made of lightweight, strong metal and is CNC machined, sand-blasted, black anodized, and  finally laser engraved.

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4. 

   Optolong L-Pro Filter - Clip filter for Canon EOS APS-C Cameras [OPTO-APS-EOS-C-LPRO]

   $293.42 CAD $366.78 CAD

   5 in stock On sale

   Back Order / Waiting List

   Optolong: The L-Pro filter from Optolong is a multi-bandpass filter that works well for photographic use with your Canon EOS APS DSLR. Better color balance is achieved by maximizing the transmission band, allowing you to produce images of broadband emission objects with nominal color cast.

   By reducing the transmission of artificial and natural light pollution, including neutral oxygen (skyglow) as well as light given off from mercury and sodium vapor lamps, the background sky will become darker, allowing the good stuff to shine through. High transmission of main nebulae emission lines at OIII, H-Beta, NII, H-alpha, and SII, when combined with the precision off-band blocking of contrast-killing light pollution, makes this filter perfect for most emission nebulae, reflection nebula, and dark nebulae.

   The Optolong EOS APS Clip L-Pro Filter is made with Schott glass that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength, or CWL. The filter cell is made of lightweight, strong metal and is CNC machined, sand-blasted, black anodized, and then laser engraved.

   Using a Clip Filter on your Canon APS-C Camera

   The Optolong EOS APS Clip filter can be inserted without tools; just use your fingers to insert or remove the filter. Once inserted correctly, it cannot unintentionally fall out.
   No changes to the housing of Canon EOS DSLR are required. All lens functions will work with the Clip installed, including focus, screen, and image stabilization,
   The Optolong clip filter prevents dust from settling on the sensor during long exposures.
   The APS-C clip filters are compatible with EOS APS-C series cameras, including EOS 1100D/600D/60D, etc. If you have a full frame EOS camera, Optolong offers clip filters for these cameras as well.
   Optolong Clip Filters do not function with the Canon EF-S series lenses. These lenses invade the space inside the camera body that would normally be taken up by the clip filter.
   To use EOS/T2 and 2” adapters to attach your camera to a telescope you’ll need to insert the Clip-Filter first and then install the desired lens adapters.
   Quality Filter Materials:

   Schott B260 substrate material from Germany, 1.0mm thick
   CNC machined and black anodized aero-metal filter cell that is ultra-thin to provide largest clear aperture; Laser-engraved to prevent fading
   Multiple layers of anti-reflection non-cementing coatings applied via electron-beam gun evaporation with Ion-assisted deposition
   Optolong Filter Manufacturing Processes and Parameters

   Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces
   Surface quality, according to MIL-O-13830, is 60/40
   High transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm and 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)
   High value transmission of pass-band and optical density of off-band is assured through Optolong’s planetary rotation system, a homogenous and precise coating procedure
   Each filter comes with a plastic case with high pressure EVA case lining

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