Free Astronomy Magazine September-October 2024

www.northek.it www.facebook.com/northek.it info@northek.it phone +39 01599521 Cassegrain > SCHOTT Supremax 33 optics > optical diameter 355 mm > useful diameter 350 mm > focal length 5250 mm > focal ratio f/15 > 18-point floating cell > Feather Touch 2.5” focuser Dall-Kirkham > SCHOTT Supremax 33 optics > optical diameter 355 mm > useful diameter 350 mm > focal length 7000 mm > focal ratio f/20 > 18-point floating cell > Feather Touch 2.5” focuser Ritchey-Chrétien > SCHOTT Supremax 33 optics > optical diameter 355 mm > useful diameter 350 mm > focal length 2800 mm > focal ratio f/8 > 18-point floating cell > customized focuser