The galaxy NGC 2403 s a great target for galaxy season in the northern hemisphere. It is high in the sky rather close to the NCP which makes tracking easy and keeps it visible for a long time during the night. It is one of the less popular but very beautiful objects.

This image was done with a Celestron C8, the original 0.63x reducer/corrector and an ASI533MC (uncooled). Everything was mounted on a Skywatcher HEQ5 (with Rowan Belt Mod) together with 15 kg of counterweights on my backyard pier. Integration time is a bit over 5 hrs from a single night.

Raw stack from PixInsight can be downloaded here. It was calibrated with bias and flat frames. Standard settings from WBPP (2024) were used, incl. CFA drizzle at scale 1. It is slightly oversampled. This is 107x 180s at gain 101.

My processed imaged with details can be found on Astrobin. You can read about the this galaxy here on Wikipedia.