Image Description and Details: The kilohour project on Messier 31 stands as our most extensive effort yet, demonstrating the remarkable outcomes of collaborative work. By dedicating nearly 500 hours to Oiii observations, we've managed to bring out the arc's features with unprecedented clarity and define its structure accurately. This endeavor also allowed us to detect numerous extragalactic nebulae and resolve distinct stars within the galaxy. Opting for Sii exposures along with the usual Ha and Oiii was a beneficial choice, enhancing our findings.

In total we gathered 1056h of integration spread over LRGBHaOiiiSii

488h Oiii/314h Ha/169hSii/26h35L/17h15R/26h17G/15h37B

Equipment Details: Cams: QHYCCD QHY268 M, QHYCCD QHY600PH M, RisingCam ATR3-26000KMA, ZWO ASI2600MC Pro, ZWO ASI2600MM Pro, ZWO ASI294MM Pro, ZWO ASI6200MM Pro

Telescopes: APM Apo 107/700, Askar FRA600, Celestron C9.25 SC XLT, Celestron RASA 8”, CFF Telescopes Refractor 135mm f/6.7, Sky-Watcher Equinox 80, Sky-Watcher Esprit 100ED, Sky-Watcher Esprit 150ED, Stellarvue SVX130T, Stellarvue SVX90T, Takahashi FSQ-106EDX4, TS-Optics Photoline 140mm f/6.5, William Optics Fluorostar 120 / FLT120, William Optics Fluorostar 132 / FLT132, William Optics ZenithStar 81 / ZS81

We would like to submit the attached image as a candidate for this competition. We are a small community of astrophotographers with similar equipment who collaborate on different projects; we coined the name “Association of Widefield Astrophotographers” because of the wide field of view that our budget gear provides. The image is a 100 hour project with data from 6 different contributors. It features the famous Andromeda Galaxy, (M31) and its extensive outer halo. Our deep broadband integration also revealed faint IFN structures surrounding the galaxy. The 87 hours of narrowband data …

While the Andromeda Galaxy, or M31, is celebrated as our Milky Way's nearest spiral neighbor, there are intriguing lesser-known aspects to this cosmic wonder. Recent measurements hint that Andromeda might be a bit closer than the widely quoted 2.5 million light-years, emphasizing the ever-evolving nature of our astronomical knowledge.

Andromeda's invisible halo of dark matter, its history of galactic cannibalism, and its impending collision with the Milky Way in about 4.5 billion years add layers to its mystique. Within its vast expanse lie ancient star clusters, older than their Milky Way counterparts, offering insights into the early cosmos. Beyond its beauty, M31 harbors a universe of secrets, making it an enduring subject of astronomical wonder.