How I used the right type of Barlow to focus a DSLR on a small Newtonian telescope.
Tag: DSLR
The awful choice in astrophotography For astrophotography, some things in the sky, like nebulas, are surprisingly large but incredibly dim. These need telescopes with lots of light gathering ability but low magnification. On the other hand, planets are tiny objects which shine very brightly. Of course, they need the complete opposite, telescopes with masses of magnification […]