I received my GSO dielectric diagonal from Agena on Friday the 19th. The weather reports were for clear skies, and I was eager to go out and have my compare/contrast contest between the old diagonal, which supposedly is only 90-91% reflective, and the new, which is supposed to be 99%. However, the weather reports were spectacularly […]Read more "December 25, 2014 – Upgrading the Mak, Part 4 – Diagonals, ST-80"
The Mak comes with what’s called a red-dot finder. This is a small – and inexpensive – device that projects a small red dot onto a clear flat surface through which you can see the sky behind it. You use the RDF to align what you see in the sky with what’s seen in the […]Read more "December 6, 2014: Upgrading the Mak, Part 2 – finderscope, high-powered eyepieces"