DayStar 130mm ERF with 150mm Inside Diameter Cap Type_Mounts & Rings ) to double its magnification

) to double its magnification (resulting in an effective 15mm focal length) while preserving the same eye relief and apparent field

featuring extended eye relief and an 82° apparent field

steady views during long periods of observation

75in FOV @ 100y 32

DayStar 130mm ERF with 150mm Inside Diameter Cap Type_Mounts & Rings ) to double its magnificationDayStar 130mm Energy Rejection Filter with 150mm Inside Diameter Cap For Refractor E 150N130 Presenting the DayStar 130mm Energy Rejection Filter, designed specifically for refractor telescopes, featuring an inside diameter cap of 150mm. These advanced filters are meticulously engineered to dramatically reduce the heat strain on your filter assembly. They achieve this by efficiently absorbing or reflecting UV and or infrared light, ensuring the