Testing new Newtonian (without coma corrector), after collimation the scope gave better picture, some fine collimation may be required. In comparison with my old Newtonian 150/750 where coma was horrible, I can live with the new scope even without coma corrector (corrector's lenses eats up photons) . Tonight was horribly cold (-20 C), cold is really freezing up the East part of the States and Canada. But despite the freezing weather (wind chill -33C), all equipment worked fine. New Orion mini-guider showed itself as a good performer, guiding well the star (it takes longer for the guider to settle because of its short focal length). Due to strong wind some images are no good, so I use only the best six. In general, I am satisfied with my new Newtonian scope and mini-guider
Comments