131F Flat-Field ED Aperture 51 mm (2") Camera/Eyepiece

Aperture 51 mm (2") Camera/Eyepiece Connection Male M48x0

Condition: This is a used original type 1

optical window) allows you to add optional filters if desired

it ensures system stability

Svbony astronomy eyepiece body is made of aluminum

131F Flat-Field ED Aperture 51 mm (2") Camera/Eyepiece5" Apo Refractor, Good for Imaging and Visual Description Askar's new 131F Flat Field quad refractor offers sharp images and versatility at a reasonable price. Like its smaller siblings, the 131F's optics cover full frame imagers, without the need for a field flattener. Backfocus distance doesn't need to be precise, making astrophotography simpler when using filter drawers, OAGs, and other accessories. The 131F's 983mm focal length gives you a 2. 1