Andromeda: A Galaxy Captured with 13+ Hours of Data from a Smartphone!
In the world of astrophotography, we often associate stunning deep-sky images with dedicated telescopes and high-end cameras. However, a recent incredible feat has challenged that notion, showcasing the power of modern smartphone technology when combined with dedication and skill.
This breathtaking image of the Andromeda Galaxy was captured using a Xiaomi 13 Ultra, a remarkable smartphone boasting a built-in 5x periscope telephoto lens. The astrophotographer behind this achievement spent an astonishing 13 hours and 50 minutes collecting data, demonstrating an exceptional level of patience and commitment.
The Technical Prowess Behind the Image
The acquisition involved capturing 1661 light frames (in RAW/DNG format) at ISO 3200 with 30-second exposures. Importantly, the process also included capturing darks and biases for calibration. Even with this extensive data collection, only about 60% of the data was deemed usable, highlighting the challenges of capturing deep-sky objects.
The equipment used for this ambitious project included an EQ mount with OnStep, providing the necessary stability and tracking for long exposures. The raw data was then expertly stacked using Astro Pixel Processor, employing a 2.5x drizzle technique to enhance resolution.
Refining the Cosmic View
Post-processing was a multi-stage affair, utilizing a powerful suite of software to bring out the subtle details of Andromeda. GraXpert, Siril, StarXTerminator, and Photoshop were all employed to refine the image, reduce noise, enhance contrast, and reveal the galaxy's majestic structure.
The results are nothing short of spectacular. This image stands as a testament to how far smartphone technology has come and, more importantly, how skill and perseverance can truly override perceived equipment limitations. It's a mind-blowing achievement that will undoubtedly inspire aspiring astrophotographers everywhere to explore the cosmos with whatever tools they have at their disposal.
