Caldwell 20, IC 5070. (reprocessed)

Apr 2nd, 2026

10 m

I played around with the channels on an old photo using Siril. I removed the blue channel, duplicated the red channel with hydrogen (placed it in R and G), and put the green channel in B. The result seems better, but I made a mistake back then during capture — I should have set the exposure to 3 seconds to avoid the blur that's present now. Crop of the frame.

Nov 4th, 2025

10 m

So I finally upgraded my setup a bit. On the very day of delivery, I decided to test it out, and I chose the North America Nebula because it's quite bright and was still near the zenith at that time. Overall, despite the Moon being at 89%, the result turned out pretty good, especially compared to my previous work. Here are the specs: 120×5s, f5.0, ISO 1600, 100mm.