Optolong L-Pro Filter - 77 mm type-solar-filters 25" Erect Image Prism -

25" Erect Image Prism - Star Diagonal with an Upright-Correct Image uses an image-erecting BAK4 prism with an anti-reflection coating

Various versions of a NUC computer are now available for purchase via the internet

It provides a side viewing window so you can see the returned laser beam spot easily on the reticle pattern which is provided

In heavily light pollution areas

and alignment-free solar tracking

Optolong L-Pro Filter - 77 mm type-solar-filters 25" Erect Image Prism -Optolong L Pro is multi bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast on broadband emission objects such as galaxies, reflection nebulae and globular star clusters. The Optolong L Pro (L Professional) Filter is designed to improve the visibility of various deep sky objects by selectively reducing the transmission of light pollution