I have been using Pentax as astrophotography camera with or without altazimuth mount for years. In the old days, K3II, K-1 with built-in astrotracer are great, but you always feel it is just a backup plan. This summer I used K3III intensively with the new version firmware and astrotracer Type 3. The result is amazing and a game changer. It makes Pentax astrophotography with astrotracer a different world. All the photos are shot with DA200mm and ISO3200,F4,60" near 20 frames and dark, flat, darkflat, bias frames. STC Clip-in filter made in Taiwan is a booster. They work great.
Last edited by Jeremychou; 10-29-2022 at 06:34 PM.