Welcome to my astronomy blog. I dedicate myself to the simplest form of amateur astronomy which requires only portable equipments. I have small refractors, small binoculars, a small mount, and a small H-alpha solar filter.
Originally from a city where the people were proud of their light pollution, that is Hong Kong where I loved. Relocated to the UK since 2021.
Sunday, May 10, 2009
T-mount and M42 mount
T-mount is M42, but the thread pitch is 0.75mm
M42 mount is also M42, but the thread pitch is 1mm
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