Dears
Thanks a lot for your comments
Considering I have a Tasco 10x50 to observe birds, my option was to buy the Celestron 20x80 to get more power for observation in my house using a tripod.
For astronomy, considering I have no experience, the idea is basically observe some planets and the moon, however, based on some of your comments, I'm also looking for some used refractor telescopes.
So, I found one from Meade (picture below)
Model DS-90ATA with 90mm aperture and focal length of 1000mm
Please, could you comment if I would have considerable benefits in image quality compared with the binoculars 20x80 I alreadd bought?