M31 shot only in Ha and OIII.

Equipment:

  • Samyang 135mm f2.0
  • Fuji X-T5 unmodified
  • Star Adventurer 2i
  • STC dual narrowband filter

Images:

  • 650x 60s
  • ISO 3200

Processing:

  • remove green noise
  • background extraction
  • photometric colour calibration
  • BluXTerminator
  • NoiseXTerminator (0.4)
  • star removal
  • GHST
  • saturation, blending and final adjustments in Photoshop
  • Balthazar@lemmy.worldEnglish
    1·
    2 days ago

    Is the [OIII] filter really doing anything for you? I think it’s really only showing continuum, in which case you’d be better served with a wider bandpass.

    • bistdunarrisch@lemmy.worldOPEnglish
      2·
      2 days ago

      No not for this target. As I use a dual narrowband filter I‘ll always get OIII as well, but as you said in this case it just shows the normal continuum. I shot this data to combine it with RGB in the future, but I liked how M31 looks with just narrowband so I wanted to share anyway.