Hello everyone. I am an amateur from central Sardinia, I am 53 years old, I live in a small village, Orotelli, and I teach mathematics and physics in a school in Nuoro, 20 km from Orotelli. As an amateur astronomer I am a visualist, I took a few shots with the smartphone brought to the eyepiece of the telescope but nothing more; the observations I make are purely contemplative. I came across this forum by chance and it made a good impression on me. I apologize to everyone for my bad English, this time for reasons of haste I used Google translator but, having more time, I will try to do without it even if with the vocabulary it will take longer and I will make more mistakes (I studied English years ago as a self-taught with all the limitations that this method entails, I studied French at school for five years).