TS Hyperbolic Ritchey-Chrétien - 8" bresser nebula upgrade and reflection nebula spectra through

and reflection nebula spectra through the filter

Image illumination up to 44mm for full-frame images

The relatively short focal length of 400mm of the 8" RASA further reduces tracking requirements

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TS Hyperbolic Ritchey-Chrétien - 8" bresser nebula upgrade and reflection nebula spectra throughTS GSO 8" f 8 RC Ritchey Chrtien Telescope with Carbon Tube. Most large professional telescope are designed and constructed to the Ritchey Chrtien principle. Until recently, these telescopes were unaffordable for amateurs. Due to their unique design, Ritchey Chrtien telescopes are primarily aimed to amateur astronomers with an interest in high resolution Astrophotography however an RC can also still be used for visual observing with an eyepiece if