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NGC 6888 Cresent Nebula in SHO hubble, or HOO?

Richard Harris · 2024-06-01T07:04:02-05:00

I spent 15 hours on NGC 6888 the Cresent nebula using my Takahashi FSQ-106-EDX4 and a ZWO 2600MM. My acquisition details are below: Sulfur II: 18 frames at 300s each = 1.5 hours Hydrogen Alpha: 88 frames at 300s each = 7.3 hours Oxygen III: 50 frames at 300s each = 4.15 hours Red: 10 frames at 180s each = .5 hours Blue: 10 frames at 180s each = .5 hours Green: 10 frames at 180s each = .5 hours Total acquisition time = 15 hours Final image and all here: https://ozarkhillsobservatory.com/ngc-6888-crescent-nebula-captured-with-takahashi-fsq-106edex4/ When I was processing I realized some pallets have more clarity than others and I see several different choices by astrophotographers on this subject, but I'm torn. Ultimately I chose HOO (Ha=red,OIII=blue, OIII=green) and then used RGB for my stars. But see below, the same closeup starless image of the nebula itself, one in HOO and one in Hubble pallet (Ha=green,OIII=blue, SII=red). Thoughts?

Started by rharris on 6/1/2024 7:04:02 AM CST

rharris
Joined 2/23/2015 Loc: Mo, USA	Posted 6/1/2024 7:04:02 AM CST I spent 15 hours on NGC 6888 the Cresent nebula using my Takahashi FSQ-106-EDX4 and a ZWO 2600MM. My acquisition details are below: Sulfur II: 18 frames at 300s each = 1.5 hours Hydrogen Alpha: 88 frames at 300s each = 7.3 hours Oxygen III: 50 frames at 300s each = 4.15 hours Red: 10 frames at 180s each = .5 hours Blue: 10 frames at 180s each = .5 hours Green: 10 frames at 180s each = .5 hours Total acquisition time = 15 hours Final image and all here: https://ozarkhillsobservatory.com/ngc-6888-crescent-nebula-captured-with-takahashi-fsq-106edex4/ When I was processing I realized some pallets have more clarity than others and I see several different choices by astrophotographers on this subject, but I'm torn. Ultimately I chose HOO (Ha=red,OIII=blue, OIII=green) and then used RGB for my stars. But see below, the same closeup starless image of the nebula itself, one in HOO and one in Hubble pallet (Ha=green,OIII=blue, SII=red). Thoughts? Ozark Hills Observatory https://ozarkhillsobservatory.com I love gear, don't judge me. (SCOPES) 14" f/8 ACF Optics - 2845mm focal length, TEC 180FL f/7 1260 mm focal length with Astro-Physics QUAD TCC Reducer (f/5), Takahashi TOA-130-NFB, 12" f/10 ACF - 3048mm (f/10) focal length, 12.5 AG Optical Truss,Takahashi FSQ-106EDX4,. Orion 180mm Maksutov-Cassegrain (7.1") 2700mm focal length (f/15), RedCat 51 II APO 250mm f/4.9, Meade 70 mm Series 6000 Astrograph Quadruplet APO Refractor, RedCat 71, Sharpstar 150mm f/2.8 HNT Hyperbolic Newtonian Astrograph, (MOUNTS) RST-300, Paramount MX Series 6, Losmandy G11 / Gemini II, ZWO AM5, LXD75, (CAMERAS) ZWO ASI6200MM Pro, ASI2600MM Pro, QHY 268C EB, QHY5-III Guider / Planetary, ASI120MM Guide, Canon 6D Full Frame, ZWO filters, Chroma 3nm SHO/RGB
rharris
Joined 2/23/2015 Loc: Mo, USA	Posted 6/1/2024 10:23:59 AM CST I thought I would also add the "final" image here for comparison. (lower quality) Ozark Hills Observatory https://ozarkhillsobservatory.com I love gear, don't judge me. (SCOPES) 14" f/8 ACF Optics - 2845mm focal length, TEC 180FL f/7 1260 mm focal length with Astro-Physics QUAD TCC Reducer (f/5), Takahashi TOA-130-NFB, 12" f/10 ACF - 3048mm (f/10) focal length, 12.5 AG Optical Truss,Takahashi FSQ-106EDX4,. Orion 180mm Maksutov-Cassegrain (7.1") 2700mm focal length (f/15), RedCat 51 II APO 250mm f/4.9, Meade 70 mm Series 6000 Astrograph Quadruplet APO Refractor, RedCat 71, Sharpstar 150mm f/2.8 HNT Hyperbolic Newtonian Astrograph, (MOUNTS) RST-300, Paramount MX Series 6, Losmandy G11 / Gemini II, ZWO AM5, LXD75, (CAMERAS) ZWO ASI6200MM Pro, ASI2600MM Pro, QHY 268C EB, QHY5-III Guider / Planetary, ASI120MM Guide, Canon 6D Full Frame, ZWO filters, Chroma 3nm SHO/RGB