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Light-Polluted Astronomy

An astronomy blog from the middle of Manhattan . . . and Denver

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Tag: TravelScope 70

December 25, 2014 – Upgrading the Mak, Part 4 – Diagonals, ST-80

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

December 6, 2014: Upgrading the Mak, Part 2 – finderscope, high-powered eyepieces

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
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