m menu image  m home m cart

Hands On Optics is a Vixen VIP Dealer.

Hands On Optics is a Celestron Top 10 Retailer.

SecurityMetrics for PCI Compliance, QSA, IDS, Penetration Testing, Forensics, and Vulnerability Assessment

Hands On Twitter

Hands On FaceBook

Coronado 5mm Blocking Filter



  • Model: BF5
  • Manufactured by: Coronado


Coronado 5mm Blocking Filter
Coronado BF-5 right angle (1.25" diagonal) type secondary blocking filter. The blocking filter is the second element in any Coronado H-alpha system, it is just as crucial to your safety and the system's performance as the front element. Use the following guidelines for selecting which blocking filter you need for full illumination of the Solar disk based on the focal length of the telescope being used: focal length

Manufacturer Info

Orion Telescopes