Back to forums

Problems generating HDR images in PixInsight

Processing Deep Sky M42 Messier Objects
3 replies•156 views
Enrique Ojeda avatar
Enrique Ojeda avatar
Hi! I'm having a problem generating my M42 HDR image in PixInsight. The resulting image is horrible. Does anyone know why? The HA master is 180 seconds at -10 C and the other is at 15 seconds at the same temperature. My camera is a ZWO ASI294 MM Pro. My filter is an Antila HA 3nm 31mm. My tube is a Red Cat III 250mm. When stacking in PI I selected to apply Drizzle. I appreciate your support, please!. Thanks! Clear skies!

Master Ha 180s



Master Ha 15s

HDR =´(

ArchStarGazer avatar
ArchStarGazer avatar
Did you try to apply STF again and especially to apply it using 24-bit LUT?
Enrique Ojeda avatar
Enrique Ojeda avatar
@ArchStarGazer  Thanks so much ArchStarGazer! It's been fixed! I didn't know about that feature! I wish you clear skies without moon forever.

ArchStarGazer avatar
ArchStarGazer avatar
I am glad that my comment was helpful smile.
Related discussions
Flats wrong orientation during calibration creating dust motes?
I have run into this very bizarre flat calibration issue in Pixinsight. Just some background, I imaged a target with my Luminance filter on my 6200mm pro last night, 60s each frame, for a total of 250 frames, at gain 100, default ASIair offset (50), ...
Feb 14, 2024
Both posts describe technical problems that astrophotographers are experiencing while processing their images using PixInsight software.
Issue in frames calibration?
Hi everyone, this is a long post, but it’s needed to provide proper context. Thanks in advance to anyone willing to read through it and help me figure things out! I’ve been struggling for days with what seems to be a calibration issue (or possibly a ...
Jul 8, 2025
Both posts are requests for technical troubleshooting help with astrophotography image processing issues.