Orion StarBlast 4.5 Imaging Reflector Review A Forgiving OTA for the Struggling Newbie, the Orion StarBlast 4.5 Imaging Reflector I am a pretty new astronomer with about a years experience.. Celestron AZ 102 refractor telescope review - through the eyes of a beginner; Celestron Origin Review; First Impressions: StellaMira 80mm APO doublet.. The Orion StarBlast 4.5 Astro is a Newtonian reflector with a 4.5ʺ aperture, a focal length of 450mm and a focal ratio of f/4. Originally designed to compete with the sadly-discontinued Edmund Astroscan, the StarBlast 4.5 Astro excels as a wide-field-of-view telescope due to its fast focal ratio of f/4.
The Orion StarBlast 4.5 Astro is a reflector telescope with a 4.5" primary aperture and tabletop mount that is compact and light for ultimate portability. It has decent specs but might not fill everyone's specific telescope needs as the small size limits the magnification and focal ratio. Reflector telescope; 4.5" primary aperture; f/4.. At only 3.7 lbs, the StarBlast 4.5 doesn\'t require a heavy mount and it transports easily to your favorite site. The 1.25\" focuser accepts 1.25\" telescope eyepieces for visual use as well. The Orion StarBlast 4.5 Imaging Reflector Optical Tube is offered as tube assembly only, with no accessories.