Optolong OIII 3nm Filter Size:36mm Glass Only Eyepiece diameter

Eyepiece diameter

melt lines around Martian polar ice caps

and M52 adapters and a finder base

so we equip our hand-cranked radio with a super bright LED flashlight

It offers high transmission for visual observations starting at 2" (50mm) aperture and is optimized for telescope focal ratios between f/4 and f/15

Optolong OIII 3nm Filter Size:36mm Glass Only Eyepiece diameterOptolong OIII 3nm Ultra Narrow Band Deep Sky Imaging Filter for CCD CMOS Astro Photography Here below you will find a description of all three types of filters for your information as a full bundle is also available, however this product listing is only for the Optolong 3nm OIII filter. Please note, if you buy the full HSO bundle you will save some money in comparison to the price of the individual items. General Product Description for All Versions