Narrow Band & UV/IR Filters

13 products

1. 

   Optolong H-Alpha 7nm (1.25'') CCD Filter [OPTO-HA7-125]

   $175.00 USD

   2 in stock

   Back Order / Waiting List

   Optolong: H-Alpha 7nm filter is the most popular narrow band filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Best choice of narrow band H-alpha astrophotography filter for highest contrast and revealing subtle nebula details.

     Add to cart
2. 

   Optolong H-Alpha 7nm (2'') CCD Filter [OPTO-HA7-2]

   $259.00 USD

   3 in stock

   Back Order / Waiting List

   Optolong: H-Alpha 7nm filter is the most popular narrow band filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Best choice of narrow band H-alpha astrophotography filter for highest contrast and revealing subtle nebula details.

     Add to cart
3. 

   Optolong H-Alpha 7nm (Round 31nm without housing) CCD Filter [OPTO-HA7-31]

   $190.00 USD

   Optolong: H-Alpha 7nm filter is the most popular narrow band filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Best choice of narrow band H-alpha astrophotography filter for highest contrast and revealing subtle nebula details.

   Out of Stock
4. 

   Optolong H-Alpha 7nm (Round 36nm without housing) CCD Filter [OPTO-HA7-36]

   $193.00 USD

   Optolong: H-Alpha 7nm filter is the most popular narrow band filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Best choice of narrow band H-alpha astrophotography filter for highest contrast and revealing subtle nebula details.

   Out of Stock
5. 

   Optolong 2'' L-eXtreme Dual Narrowband Filter [OPTO-L-EXTREME-2]

   $309.00 USD

   5 in stock

   Back Order / Waiting List

   The Optolong 2" L-eXtreme Dual Band filter is a 7nm bandpass filter that isolates the H-Alpha and Oxygen III emission lines to maximize the signal-to-noise ratio between nebulae. When compared to the Optolong L-eNhance tri-band filter, the dual band only emits the Ha and OIII emission lines rather than the L-eNhance filters transmission of Hb, Ha, and OIII. Optolong has ensured that the L-eXtreme filters do not transmit between H-beta and OIII lines, as there are no nebula lines there. Limiting the transmission this way means that light pollution is blocked so nebula signals are boosted and the background of the sky becomes darker for better contrast during imaging. For those who live in areas with higher levels of light pollution or for those who would like to image during times where the Moon is bright, this threaded L-eXtreme filter is an excellent tool for their astrophotography toolbox!

   When it comes to quality control Optlong ensures that each filter is examined by Spectrophotometer and Laser Interferometer for spectrum characteristics and surface accuracy respectively. During the manufacturing process, high-precision grinding and polishing is used to ensure that the substrate parallelism is greater than 30" and the surface accuracy is better than λ/4. Electron-beam gun evaporation and Ion-assisted deposition (IAD) coating is applied to provide durability and resistance to scratching. IAD increases film firmness, consolidates membrane compactness, and changes vacuum coating material characteristics. This type of manufacturing technology also provides stability on the central wavelength so there is no deviation during temperature changes.

   
   L-eXtreme Dual Band Filter Specifications

   Substrate: B270
   Filter Size: 2"
   Thickness: 1.85mm
   FWHM: OIII 7nm+Ha 7nm
   Blocking range: 300-1000nm
   Blocking depth: light pollution line blocking >99%
   Surface quality: 60/40
   Transmitted Wavefront RMS: λ/4
   Parallelism: 30s

     Add to cart
6. 

   Optolong OIII-CCD 6.5nm (1.25'') CCD Filter [OPTO-OIII-CCD65-125]

   $159.00 USD

   1 in stock

   Back Order / Waiting List

   Optolong: Extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). OIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters. They show great structural details, but have natural colors, looking like an RGB image.

     Add to cart
7. 

   Optolong OIII-CCD 6.5nm (2'') CCD Filter [OPTO-OIII-CCD65-2]

   $255.00 USD

   5 in stock

   Back Order / Waiting List

   Optolong: Extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). OIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters. They show great structural details, but have natural colors, looking like an RGB image.

     Add to cart
8. 

   Optolong OIII-CCD 6.5nm (Round 31mm Without Housing) CCD Filter [OPTO-OIII-CCD65-31]

   $189.00 USD

   Optolong: Extra Narrow band OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). OIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters. They show great structural details, but have natural colors, looking like an RGB image.[/extract]

   Out of Stock
9. 

   Optolong OIII-CCD 6.5nm (Round 36mm Without Housing) CCD Filter [OPTO-OIII-CCD65-36]

   $195.00 USD

   Optolong: Extra Narrow band OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). OIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters. They show great structural details, but have natural colors, looking like an RGB image.

   Out of Stock
10. 

    Optolong SII-CCD 6.5nm (1.25'') CCD Filter [OPTO-SII-CCD65-125]

    $159.00 USD

    1 in stock

    Back Order / Waiting List

    Optolong: Extra narrow band SII-CCD 6.5nm filter (Sulful II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).

      Add to cart
11. 

    Optolong SII-CCD 6.5nm (2'') CCD Filter [OPTO-SII-CCD65-2]

    $250.00 USD

    4 in stock

    Back Order / Waiting List

    Optolong: Extra narrow band SII-CCD 6.5nm filter (Sulful II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).

      Add to cart
12. 

    Optolong SII-CCD 6.5nm (Round 31mm Without Housing) CCD Filter [OPTO-SII-CCD65-31]

    $193.00 USD

    Optolong: Extra narrow band SII-CCD 6.5nm filter (Sulful II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).

    Out of Stock
13. 

    Optolong SII-CCD 6.5nm (Round 36mm Without Housing) CCD Filter [OPTO-SII-CCD65-36]

    $199.00 USD

    Optolong: Extra narrow band SII-CCD 6.5nm filter (Sulful II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).

    Out of Stock