There’s something timeless about M51, the Whirlpool Galaxy, with its sweeping spiral arms and the smaller companion galaxy tugging gently at its side. Even at a distance of over 30 million light years, its structure is clear and elegant, offering a fascinating glimpse into the dynamics of galactic interaction.
On a recent clear night under a Bortle 5 sky, I used the Seestar S50 to image this beautiful pair. I captured a total of 1,650 subframes, each with a 20-second exposure. The Seestar might be small, but with patience and the right processing workflow, it continues to surprise me with the level of detail it can deliver.
I stacked the data using the Weighted Batch Preprocessing script in PixInsight, which handled calibration and integration. After that, I moved over to Photoshop for the finishing touches, adjusting the black point, lifting the highlights, and gently bringing out the structure in the spiral arms without overdoing it.
M51 never disappoints. Its form is so well-defined that it almost feels like a classic textbook example of a spiral galaxy. Each time I image it, I notice something different, whether it’s a fainter dust lane or subtle colour variation in the arms. It’s an object that invites repeat visits.
The result from this session has made its way into my favourites. For a setup as compact and accessible as the Seestar, I couldn’t ask for more.