The XL EOS Clip 6nm H-alpha Filter by Astronomik: 

The Astronomik 6nm H-alpha filter is an extremely narrow emission-line filter for CCD photography. The filter lets the H-alpha light of emission nebulae pass and blocks nearly the whole remainder of the spectrum where the CCD is sensitive.

Suitability

• Visual observation (dark skies): Unsuitable
• Visual observation (urban skies): Unsuitable
• Film photography: Unsuitable
• CCD photography: Very good, huge contrast enhancement at H II-emission nebulas
• DSLR photography (original): Good, reduced sensitivity in the H-alpha band
• DSLR photography (astro modified): Very good, huge contrast enhancement at H II-emission nebulas
• DSLR photography (MC modified): Very good, huge contrast enhancement at H II-emission nebulas
• Webcam / Video (Planets): Unsuitable
• Webcam / Video (Deep Sky): Unsuitable

Technical Data

• Parfocal with other Astronomik filters
• Glass thickness: 1mm
• Completely resistant against high humidity, scratches and aging effects
• Diffraction limited, the filter will not reduce the optical performance of your telescope!
• Astronomik filters are delivered in a high-quality, long lasting, filter box
• Since 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past

 

OPT Product Number: AK-HA6-EOSXL

 

• Compatible cameras:
• - 5D Mk I (no live view)
• - 5D Mk II
• - 5D Mk III
• - 6D Mk I
• Non-compatible cameras:
• - 5DS
• - 5DSR
• - 5D Mk IV
• - 6D Mk II
• - Canon APS-C (EF-S) cameras
• - Canon Mirrorless cameras

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