Filters for Uranus explained by spectroscopy
To image details on Uranus, amateurs are using red and/or infrared filters. Spectroscopy is a nice tool to describle the…
Observing Mars: some technical advices
After the article, “What can we see on Mars this year” let’s now review some technical advices.
Commented spectrum of Venus
By using the same approach as for the Full spectrum of Uranus commented, it is possible to understand many things…