Interstellar comet 3I/ATLAS imaged from Oxfordshire, UK before dawn on 21st November 2025. My husband Mark captured 3 minute exposures with our 8" Ritchey-Chretien telescope and an Altair Hypercam 294C. I calibrated and aligned 25 FITS files in Deep Sky Stacker, processed them in Lightroom and used them to produce the timelapse showing the comet's movement over a1hr 50min period starting at 04:18 UT. The comet is almost 300 million kilometres from Earth so it's small and faint, but it's moving q