Product Details

• Description
• Specifications
• Included Items
• Reviews

• Chroma SII 8nm Narrow Band Filters are essential for imaging objects, like nebulae, that are rich in ionized sulfur atoms. These line emission filters work extremely well in heavy light-polluted areas and allow you image on nights when the moon is up.

• specifications

  Filter Shape	Round
  Filter Type	SII
  Free Shipping	Yes
  Size	31mm

• included items

  • Parfocal for systems f/4.0 or slower
  • Transmitted wavefront better than 0.25 waves/inch
  • Parallelism: less than 30 arcsec
  • Made in the U.S.A.
  • H-Alpha 8nm Narrow Band Filter