Astronomy

Astronomy

Getting sharp focus with your telescope

Some friends after seeing a strangely cut bit of cardboard in the observatory suggested I write a blog post about it. Those of you who do astrophotography won’t need an introduction to the Bahtinov Mask, but this post might be of interest to the rest. Getting focus right in astrophotography isn’t easy. Autofocus doesn’t work […]

Astronomy

Observatory Code!

This morning I got this one line email from the International Astronomical Union Minor Planet Center: Your site is now code Z72. So Cademuir observatory is now officially recognised by the MPC! In order to obtain an observatory code it’s necessary to observe some minor planets (in the 1000-400,000 range) of varying magnitudes, at least

Astronomy

Observatory Lighting

The latest improvement in the observatory is lighting. I needed something that was low power, needed to be red, needed to be white, preferably dimmable, preferably remote control.┬áThere didn’t seem to be anything in the local shops, but I found an LED solution on ebay costing a whole $18.90. At that price I’d have to

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