Hi all,
Just bought a 2nd hand Sigma 50mm f1.4 Art lens, and had a chance to do a quick test of its abilities yesterday - a chilly clear Hahndorf, SA night.
Sigma 50mm f1.4 Art lens @ f4
ASI2600MM
Chroma 3nm Ha filter
5x1000s integration (1hr 23mins)
Think it might have potential!
link to higher res version...
https://app.astrobin.com/i/q6k45z
Doug