First time using a wide field lens which I borrowed. CANON EF 100mm Macro IS USM, usually used for Macro photography. Since it features a flat field optical design, it should be also good for astrophotography. Although the raw data didnt produce flat images and suffered from coma and astigmatism on my APS-C sensor camera, the wonders of modern Tools from Russel Croman like Blur Xterminator produced an amazing output.
Processed only dual narrowband data of Hydrogren Alpha + Oiii using lukomatics workflow to process dual narrowband images.