All were shot with a 6-inch or smaller aperture refractor using a DSLR
camera, a mirrorless camera with extended red response, or a 1-1/4 inch
OSC eyepiece camera.
Unless otherwise noted, all were shot from a Bortle ~7 site.
On Sept 24, 2019, I gave a 2-hour
presentation on astrophotography
for the BCA Photo Group.
The first half hour shows some of my images (many have been improved since
then) and the remainder is a how-to.
Errata:
Arcsinh stretch is generally better than p-th root.
There is no discussion of autoguiding and dithering.
