M57 Ring Nebula - OSC + Dual NB

[Aramcheck]

A combination of 463 x 3 min exposures with the L'extreme dual narrowband Ha/Oiii filter (23 hr 9 min) from 7 nights - 20/08 to 07/09/2023; plus 96 x 3min regular RGB subs (06 & 08/08/2023) + 101 x 3min regular RGB (05 &12/08/2022)...
I was trying to see if I could get the faint outer shells which J.C. Duncan discovered in 1935. Last year I got the barest hint of the first outer shell & as the RGB this year looked promising I decided to switch to the dual narrowband filter & combine data sets.

Processing the luminance was a challenge due to the M57's high dynamic range between the bright core & the very faint outer shells; and combining the RGB stars & nebula core with the narrowband outer shell was a bit of a fudge (to say the least).

SW 200pds + AZEQ6 GT-PRO, ZWO ASI 2600MCPRO + OAG with ZWO 120mm... Bortle 7/8

Cheers
Ivor

[Stickey]

Great image 👍

[glafnazur]

That's really nice, I really like the star colour 👍