2" L-eNhance Deep-Sky Light Pollution Filter Focal Ratio_4. f/10 - f/15 While technically this was designed

While technically this was designed for the f/8 system

a smartphone adapter

but not at or near the center (unless you are very lucky

the telescope comes with downloadable astronomy software and a star map

2" L-eNhance Deep-Sky Light Pollution Filter Focal Ratio_4. f/10 - f/15 While technically this was designedThe L eNhance is a three band filter and ideal for strong suppression of light pollution. It enables astrophotos of objects with narrow band emissions in the O III, H Beta and H Alpha lines out of the city. Professional photographic filter for astronomy Enhances the photography of emission nebulae in the city Ideal for strong suppression of light pollution Allows astrophotography even from bright cities High transmission for O III, H Beta and H Alpha