Explore Scientific 68 degrees 20mm Waterproof Eyepiece wide angle it will not care about

it will not care about positive side and negetive side of the adapter

Package Includes:

1 lbs / 30

This kind of deep-Sky photography has a few advantages over the astrophotography with colour cameras:

Argon atoms are larger than that of Nitrogen and therefore they are less likely to leak or diffuse their way through the seals over the life of the eyepiece

Explore Scientific 68 degrees 20mm Waterproof Eyepiece wide angle it will not care aboutUsing advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings, Explore Scientific 68 Series Argon Purged Waterproof extreme wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics. The visual effect of these eyepieces with their long eye relief and their 68 apparent field is truly a full immersion