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Astronomik H-alpha 12 nm XT Clip-Filter - Canon EOS APS-C

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SKU: ASF-HA12-EOS-XT
$209.95

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Astronomik H-alpha 12 nm XT Clip-Filter - Canon EOS APS-C

For narrowband astrophotography under light-polluted skies, this H-alpha 12 nm XT Clip-Filter - EOS APS-C from Astronomik is an excellent choice! With this powerful narrowband filter, you'll be able to cut through pollution and zero in on the delicate details of hydrogen rich emission nebulae!

Please note: this filter must NEVER be used for solar observing or imaging! Doing so will cause permanent damage to your eyes.

This Astronomik H-alpha 12 nm XT (Extra-Thin) Clip-Filter - EOS APS-C (8h00kh) is compatible with Canon EOS APS-C digital cameras, and can be used with optical systems with focal ratios down to f/3. This filter is made to Astronomik's exacting standards and is guaranteed to provide 90% transmission or more at the H-alpha emission line (656nm). The exact transmission ratings may vary between each filter, and the specific T-Max will be listed on the filter case.

H-alpha 12 nm XT Clip-Filter EOS APS-C At a Glance

  • Extra thin XT Clip-Filter with (0.3-0.5 mm) glass substrate
  • Guaranteed transmission of more than 90% at the H-alpha line (656nm)
  • FWHM of 12 nm isolates H-alpha emissions while blocking all other wavelengths from UV to IR
  • Clip-Filter for Canon EOS APS-C DSLR & mirrorless cameras
  • Compatible with optics as fast as f/3 without significant performance loss
  • Includes Astronomik 10 year warranty

Unlock the Night Sky!

Cut through light pollution and capture the faint details of hydrogen rich deep sky objects with Canon DSLR and mirrorless cameras! Learn more about this powerful H-alpha clip-filter below.

12 nm H-alpha Narrowband Filter with MFR Coatings
This Astronomik H-alpha filter has a FWHM of 12 nm, allowing you to cut through light pollution while still capturing the rich details of hydrogen emission nebula. This filter is designed to work with a broad range of imaging devices and is especially beneficial for use with cameras that have moderate to high dark current output, or cameras with an integrated or dual guiding sensor, as it provides more guiding stars. Thanks to the high optical quality of the Astronomik MFR substrate, this filter ensures maximum performance across the entire frame. Every Astronomik filter undergoes a rigorous quality control process and is tested using a PerkinElmer Spectrophotometer to ensure it the meets specifications listed on the filter box.

Clip-Filter Compatibility Chart

Compatible Canon EOS APS-C Bodies
Canon EOS 7D, 7D Mark II: Yes Canon EOS 20D, 20Da: Yes
Canon EOS 30D, 40D, 50D: Yes Canon EOS 60D, 60Da: Yes
Canon EOS 70D, 77D: Yes Canon EOS 80D, 90D, 100D: Yes
Canon EOS 200D, 250D: Yes Canon EOS 300D, 350D: Yes
Canon EOS 400D, 450D: Yes Canon EOS 500D, 550D: Yes
Canon EOS 600D, 650D: Yes Canon EOS 700D, 750D, 760D: Yes
Canon EOS 800D, 850D: Yes Canon EOS 100D, 1100D, 1200D: Yes
Canon EOS 1300D, 1500D, 2000D: Yes Canon EOS 3000D, 4000D, 8000D: Yes
Canon EOS Rebel SL1, SL2, SL3: Yes Canon EOS Rebel T6i, T6si, T7i, T8i: Yes
Canon EOS Rebel T3, T5, T6: Yes Canon EOS Rebel T7, T100: Yes
Canon EOS Digital Rebel T1i, T2i, T3i: Yes Canon EOS Digital Rebel T4i, T5i: Yes
Canon EOS Digital Rebel XT, XTi, XSi, XS: Yes Canon EOS Kiss X2, X3, X4: Yes
Canon EOS Canon EOS Kiss X5, X6, X6i: Yes Canon EOS Canon EOS Kiss X7, X7i, X8, X8i: Yes
Canon EOS Canon EOS Kiss X9, X9i, X10i: Yes Canon EOS Canon EOS Kiss X50, X70, X80: Yes
Canon EOS Canon EOS Kiss X90, Kiss F: Yes Canon EOS Canon EOS Kiss Digital, Digital N, Digital X: Yes
The Astronomik EOS APS-C Clip-Filters are not compatible with EOS-1D, 5D, or models manufactured before 2003

Frequently Asked Questions

What is the difference between Astronomik’s standard and XT filters?
The new Astronomik XT-Filters are specifically designed for astrophotography with wide-angle lenses, delivering sharp and crisp star images all the way to the edges of the image. When using very short focal length lenses to take widefield images, standard Clip-Filters could introduce aberrations, stretching stars in the outermost corners of the image. To solve this issue, the new Astronomik XT-Filters are coated on an extremely thin (0.3-0.5 mm) substrate, significantly reducing optical distortion and aberrations. Despite the reduced thickness, the Astronomik XT-Filters maintain the highest optical quality. They are manufactured using the same durable coating technology as all Astronomik filters.

What is the difference between Astronomik’s MFR and MaxFR coatings?
Astronomik’s standard MFR coatings are designed to work with most optical systems; however, performance is significantly reduced when used with fast optical systems (f/3-4 or lower). Filters with MaxFR coatings will work with faster optical systems, ranging from f/6-f/1.7. Compatibility varies between filter type and bandpass (FWHM). Please refer to the product description for precise compatibility information.

What is the difference between Astronomik’s 4 nm, 6 nm and 12 nm filters?
Astronomik's 4 nm and 6 nm narrowband filters are designed for imaging faint objects in star-crowded regions of the milky way. They are also recommended for use in heavily light polluted areas, and with cameras that have a very low dark current. The 12 nm narrowband filters are designed for imaging emission targets under dark skies, and for use with sensors that have a moderate to high dark current. They also provide better performance for cameras with integrated or dual guiding sensor, as they provide more guiding stars.

What is the difference between H-alpha, OIII, and SII filters?
H-alpha filters are ideal for imaging all hydrogen rich red-glowing emission nebulae. OIII (Oxygen III) filters capture greenish and blueish structures that are often present in planetary nebulae, star-forming regions, and supernovae. SII (Sulfur II) filters allow you to capture faint yellow and gold structures present in some emission targets, adding more detail to your final image. When used together, these filters enable you to create false-color emission line images similar to those produced by the Hubble Space Telescope.



Astronomy Hub: Your one-stop-shop for Astrophotography Knowledge!

Our Gear Experts have compiled a wealth of information to help expand your astrophotography knowledge! Below you'll find links to articles, videos and "how-to" guides. Just one more reason that our Astronomy Hub is a one-stop-shop for all your astronomy and astrophotography needs!

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