Baader D-ERF Energy rejection filter 110mm, IR-Cut dielectric
D-ERF Energy rejection filter 110mm, with IR-Cut dielectric coating
By using a very efficient all-dielectric IR rejection coating this filter will keep your telescope cool through your observations of the Sun.
You should use this filter only together with a "Solar Spectrum" H-alpha filter!
For safe use please open the attached PDF-file: SAFE USE OF C-ERF
Please CONTACT US for availability information!
Never use any eyepiece filter for solar observation without objective front filter!