This post was written by Andrés Arrieta, a student at the University of Puerto Rico at Rio Piedras during his first observing experience as a member of the Undergraduate ALFALFA team.
The excitement I felt as I arrived to the Arecibo Observatory was belittled by the growing excitement that I would come to feel with every minute that I spent learning, conversing and investigating the universe throughout the weekend. Every person I met had something beautiful to teach me in all aspects, not only astronomy. I learned about the process of identifying galaxies by interpreting the data produced by the telescope. Also, I learned about the process by which the telescope gathers that data, which involves a period in which it is on source and then a period in which it is off source, which will be subtracted to produce a final result. After this process, one interprets this information and decides whether there is enough evidence to say that the source is a galaxy (also using the SDSS optical information as an aid in our identifications). Overall, it was a great experience; everyone I met during my stay was nice and very willing to answer questions and have enthralling conversations about diverse topics. It is was wonderful to be given the opportunity to spend a weekend doing something I love and getting to know people that fuel the love for science with their presence and knowledge. I cannot wait to do it again!