ANTLIA 4.5nm EDGE NARROWBAND SHO SET Cable It features many countersunk bores

It features many countersunk bores and holes

If you aren't sure

And whenever you start controlling your telescope remotely - the single port becomes a painful reality

letting through light only where optics are their sharpest (especially with refractors)

Alternatively

ANTLIA 4.5nm EDGE NARROWBAND SHO SET Cable It features many countersunk boresThe Antlia 4. 5nm Edge H Alpha, Oxygen III & Sulphur II narrowband filters have the same excellent transmittance characteristics as their 3nm Pro series but at a more affordable price. The 4. 5 nm bandpass is only 1. 5% of the entire visible spectrum, increasing the signal to noise ratio and delivering high contrast images and extremely dark backgrounds. To even further enhance the contrast, and suppress the stray light and internal reflections,