Coronado 30 mm Blocking Filter
This Coronado 30 mm Blocking Filter is as necessary for your safety and the system's performance as the primary element. If you are switching to a longer focal length telescope your SolarMax system you can purchase blocking filters separately.
Focal Length <3000mm - BF30
There is no advantage for visual use in using a larger blocking filter than required based on the focal length; however, based on customer feedback, we understand that for imaging with telescopes under 500mm fl, the BF10 is easier to use than the BF5. The Blocking Filter is not a stand-alone filter. It is an integral part of the Coronado design and cannot be used without a SolarMax series filter on the front of the optical system.
The BF5, 10, and 15 are all 1.25" right angle diagonals. The BF30 is a 2" straight through design and comes with a 1.25" Zero Length reducer.
Dimensions & Specifications
Type of Solar Equipment: Blocking Filter
Emission Line: H-Alpha
Blocking Filter or ERF Included: BF30
Solar Blocking Filter Type: 2" Straight-Through Extension Tube
We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.
Default manufacturer warranty.
Return & Exchange Policy
At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.
Most Helpful Reviews
Most Critical Reviews
Displaying Reviews 1-10 of