Coalsack Dark Nebula and Surroundings May 2024 Dark Version
This frame was taken with clear filter without dual narrow band filter. Focus got off in longer exposure frames.
Equipment: Sigma 35mmF1.4 DG HSM Art, IDAS Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding
Exposure: 4 times x 60 seconds, 5 x 240 sec, and 12 times x 600 seconds at ISO 1,600 and f/3.2
site: 2,430m above sea level at lat. 24 38 55 South and long. 70 16 52 West near Cerro Armazones Chile
SQML was 21.55 at the night. Ambient temperature was around 6 degrees Celsius or 43 degrees Fahrenheit.
Coalsack Dark Nebula and Surroundings May 2024 Dark Version
This frame was taken with clear filter without dual narrow band filter. Focus got off in longer exposure frames.
Equipment: Sigma 35mmF1.4 DG HSM Art, IDAS Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding
Exposure: 4 times x 60 seconds, 5 x 240 sec, and 12 times x 600 seconds at ISO 1,600 and f/3.2
site: 2,430m above sea level at lat. 24 38 55 South and long. 70 16 52 West near Cerro Armazones Chile
SQML was 21.55 at the night. Ambient temperature was around 6 degrees Celsius or 43 degrees Fahrenheit.