Astrophotography Image Processing
Warren Keller’s Tutorials, which are excellent:
A compendium of lots of tutorials and information for PixInsight:
Madratter’s PixInsight Tutorial:
Harry’s Astro Shed:
Rogelio Bernal Andreo’s tutorials:
Light Vortex Astronomy:
The PixInsight team’s own Tutorials:
Tutorials on the PixInsight Forum:
The Astro Imaging Channel (a mix of image processing and other tutorials related to astrophotography):
Adam Block’s Video Tutorials on PixInsight:
Oceanside Pacific Telescope sells all sorts of equipment related to the astronomy hobby.
Scope Stuff sells lots of accessories. It is locally based near Austin, TX but has no store front.
Astronomics, similar to OPT, they sell all equipment related to astronomy.
Astro-Physics makes high-end telescopes and mounts.
Other Astrophotographer’s pages
Jerry Gardner is an astrophotographer friend from Cloudy Nights. He’s created some fantastic images and has done some of the comparison shots for Sky Watcher that you may have seen in Sky and Telescope and Astronomy Magazine.