ITF replacement for Coronado blocking filter
The Beloptik ITF replacement filter for Coronado H-alpha blocking filter systems is a hard coated filter and solve the „rust problem“ of the original ITF in the PST, BF5, BF10, BF15 and BF30.
This filter is durable, has no aging and will place direct in the holder instead of the original one.
Please note, this is not the 6A sub-nanometer H-alpha filter from eyepiece site of the BF.
Safe use is only complete with both filters: ITF replacement in telescope site barrel and the 6A H-alpha filter in the eyepiece barrel.
Available from stock in two sizes:
Dia. 17.7mm (for PST, BF5, BF10, BF15)... 159 EUR +add. shipping costs (sold out, back ordered, probably June)
Dia. 35mm (for BF30)... 279 EUR +add. shipping costs (sold out, back ordered, probably June)