It's Helix season! Can't wait to see what sort of PN our Sun will produce in 5 billion years lol.
Capture details: This is a Ha / OIII+Green / OIII+Blue combination. My Ha filter is fairly wide at 30nm. I'll get a more narrow band filter in the future. Some OIII was taken with a visual OIII filter + UV/IR cut filter double stacked.
Ha = 330x2 minutes.
Green = 278x1 minute.
Blue = 148 x 1 minute.
Total about 18 hours.
ZWO ASI 183mm Pro at -10C, GSO 10" F4 Newtonian, HEQ5 Pro guided with PHD2 over several nights.
Bigger at Astrobin --->
https://astrob.in/370752/0/