Coronado Straight-Viewing 30mm H-Alpha Blocking Filter (2")

Coronado Straight-Viewing 30mm H-Alpha Blocking Filter (2")

Coronado Straight-Viewing 30mm H-Alpha Blocking Filter (2")

B&H # COBF30 MFR # BF30
Coronado Straight-Viewing 30mm H-Alpha Blocking Filter (2")

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Expected availability: 7-14 business days

Product Highlights

  • Hydrogen-Alpha Bandpass
  • Straight-Viewing Optical Path
  • Fits 2" Drawtubes and Eyepieces
  • For Telescope Focal Lengths up to 3000mm
  • SolarMax Solar Viewing Filter Required
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This item is noncancelable and nonreturnable

SAFETY FIRST: Observing the Sun without the proper protection may result in serious personal injury, including permanent eye damage and blindness, and/or damage to equipment. Never point an optic at the sun without an approved solar filter on the front of the optic. For direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder, ensure your filter is ISO 12312-2 (also written as ISO 12312-2:2015) certified. Never use photographic neutral density filters for direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder.

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  • 1Description

Tuned to the popular hydrogen-alpha wavelength, the Straight-Viewing 30mm H-Alpha Blocking Filter from Coronado is designed to be used on OTAs with focal lengths of up to 3000mm, and is the secondary interference filter in a Coronado solar viewing system. For safe viewing, and to protect the optical system, it must be used in conjunction with a front SolarMax filter. The snout and eyepiece holder are made to fit larger 2" drawtubes and eyepieces, allowing for wider fields of view and longer eye reliefs. While SolarMax filters are sold in kits that include a blocking filter, this 30mm filter is offered here for viewers who have two different sized telescopes that they want to use their SolarMax system with but require a different size blocking filter.

UPC: 709942995534
Packaging Info
Package Weight 1.2 lb
Box Dimensions (LxWxH) 6.3 x 4.8 x 4.3"
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