I bought this for my daughter to replace the el cheapo plastic bodied item that came with her Celestron Starsense 102mm refractor and wanted an erecting prism so as to not confuse her at this early stage! The StellaMira item is superb, really well made and solid, noticeably brighter than the stock item too. Very pleased overall and superb service from FLO.

As someone new to astronomy I found the left/right reversed view in a star diagonal too much to cope with. This makes it much easier and is just the same as you see with the naked eye. I cannot tell if it transmits slightly less light than a good star diagonal, but, if it does, for me its worth it. I highly recommend it for other beginners or experienced observers who like an easy life. Appears to be solidly made and high quality.