Comet C/2013 A1 (Siding Spring) found in DES images by backyard worlds volunteer

TomBickle found this object at backyard worlds in this discussion.
When I changed to the legacy dr9 view and used “single exposures” and “look up in JPL Small-Body Database”, I could identify it as C/2013 A1 (Siding Spring)

See also wikipedia article (it almost hit Mars)

From the Astro Data Lab I was able to get an image, including the date and coordinates:
RA: 3:22:29.478 DEC: -38:36:34.01

Here the g-band DECam image
Image Credit: CTIO-4m DECam
Acknowledgement: TomBickle, Melina Thévenot