Astr 4000 Videos and Links
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Astr 4000 Videos and Links

You can find videos and links used in Astrophotography here.


Catching the Light website by Jerry Ludriguss

Sky & Telescope's Astrophotography Resources page

Focusing with a Bahtinov mask

Focusing with a Hartmann mask

Registax Download         Short Registax How-To video

Another short Registax How-To video

Introduction to Registax video