On March 17, 2026, a remarkable celestial event was recorded with the discovery of supernova SN2026fvx in the galaxy NGC 4205. Located in the constellation Draco at a distance of approximately 57 to 75 million light-years, this supernova initially appeared with a faint magnitude of 19.3. Scientific analysis quickly classified it as a Type Ia supernova, a catastrophic explosion occurring in binary star systems. In such a system, a white dwarf accretes matter from its companion star until it reaches the critical Chandrasekhar limit. At that precise moment, a runaway thermonuclear reaction is triggered, completely tearing the star apart in a brilliant flash of light.
By early April, the supernova’s brightness had increased significantly to magnitude 12.3. Given its high altitude in the sky, it provided a perfect opportunity for observation. This session was particularly meaningful as it marked my first deep sky object since April 2025, requiring a period of re-learning the technical workflows. The process began with polar alignment using SharpCap and an ASI224MC camera, followed by a three-star alignment. The SynScan was then connected with an ASIAIR Plus controller, and the TAL200K f/8.5 telescope, mounted on a Skywatcher AZEQ6 GT, was moved into position. To capture the event, I used a cooled ASI2600MC camera to take 13 300-second exposures, opting to work without guiding or the use of a Bahtinov mask for this session.
The technical journey was not without its challenges, particularly regarding data management. I encountered a frustrating problem getting the data out of the ASIAIR Plus, as Windows 11 did not support the direct PC connection. Several troubleshooting ideas from the ZWO network were attempted without success, and even using a card reader resulted in errors within the fit files. Ultimately, an ordinary USB stick proved to be the solution that worked.
Although some tracking errors occurred during the session, I was able to retain 8 high-quality light frames. These were stacked together with darks, flats, and bias frames using Astro Pixel Processor to create the final image. The resulting view clearly features the supernova, and its observed brightness was further validated by performing photometry within ASTAP software, confirming the magnitude of 12.3 as reported by Rochester Astronomy. It remains a staggering thought that the light captured in this image traveled through the vacuum of space for tens of millions of years before finally reaching my sensor.
