Category: Astronomy

Clouds and rain have forced me to reprocess some old images rather than acquire new ones. The image of the Rosette Nebula below was made from a session in 2021 and another from 2024. Both sessions involved the same camera and telescope but different dual narrowband filters which might explain why it turned out essentially monochrome. The two sessions totaled 3.5 hours of gathering light.

The Rosette Nebula is star forming region, those ones in the center, in the constellation of Monoceros, the Unicorn, to the left of Orion. Unless you are from the southern hemisphere, then it is to the right of Orion.

Celestron 11″ SCT with Hyperstar @f/1.9, ZWO ASI294MC Pro, L-Enhance and IDAS NBZ HS filters (not at the same time).

Here is a nearly three hour video of Orion traversing my view to the south, compressed into 53 seconds. Each frame represents 20 seconds of real time. Canon T8i with a Rokinon 14mm lens.

Saturday evening at the River Ridge Observatory, I shot the Jellyfish Nebula with my C11 @ f/1.9 with a ZWO ASI2600MC Pro and L-Extreme F2 dual narrowband filter.

From Wikipedia: IC 443 (also known as the Jellyfish Nebula and Sharpless 248 (Sh2-248)) is a galactic supernova remnant (SNR) in the constellation Gemini. On the plane of the sky, it is located near the star Eta Geminorum. Its distance is roughly 5,000 light years from Earth.