Interstellar Comet 3I/ATLASInterstellar Comet 3I/ATLAS
I was surprised but pleased to be able to image a rather unusual object, known as 3I/ATLAS. It's likely a comet, but visiting from interstellar space, not from our solar system. The image is a composite of 12 5 minute exposures, registered on the comet, so the background stars are trailed as the object moves.
3I/ATLAS on August 24, 2025 from Goose Pond FWA, Greene County, Indiana
1 hour total exposure
GSO 8" f/8 RC Astrograph CF
ZWO ASI2600MC Pro cooled color CMOS camera, IDAS DTD filter, 12x300sec., gain 200, bin 2, 0ºC
ZWO EAF autofocuser
Losmandy GM811G mount
Auto-guided, Askar off-axis guider, ZWO ASI174MM Mini guide camera
ZWO ASIAir Plus controller
Processed in Astro Pixel Processor, Adobe Lightroom, Adobe Photoshop
#deepskyphotography #astrophotography #3IATLAS I was pleasantly surprised to be able to image a rather unusual object, known as 3I/ATLAS. It's likely a comet, but visiting from interstellar space, not originating in our solar system. The image is a composite of 12 5 minute exposures, registered on the comet, so the background stars are trailed as the object moves.

3I/ATLAS on August 24, 2025 from Goose Pond FWA, Greene County, Indiana
12 300sec. exposures (1 hour total)

GSO 8" f/8 RC Astrograph CF
ZWO ASI2600MC Pro cooled color CMOS camera, IDAS DTD filter, gain 200, bin 2, 0ºC
ZWO EAF autofocuser
Losmandy GM811G mount
Auto-guided, Askar off-axis guider, ZWO ASI174MM Mini guide camera
ZWO ASIAir Plus controller

Processed in Astro Pixel Processor, Adobe Lightroom, Adobe Photoshop