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- Name
- Alan
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Hope this is ok to post here, it's not a critique but a technical question specific to Astro. In a number of recent shoots using an astro modified camera (I purchased a second hand modified canon 6D mk ii last year) I have started to see a strange purple flare artefact on the images. I initially thought this was lens flare from an external light source, however shooting last night and the location was absolutely dark with no external lights and it is visible in my frames. I tried covering the eye piece to keep out any stray light but it still seems to be there in shorter frames when stacking.
The artefact isn't visible in all images and I think it starts to appear over time which makes be wonder if this is a sensor problem over heating. It's impossible to remove by post processing.
It seems to disappear by switching off the camera for a bief period and then shooting again. Last night i was shooting 2 minutes tracked exposures, but it also seems to be visible in 1 minute frames and
I've cleaned the senor using a dry cleaning brush i have but it seems the same.
Has anybody seen anything similar or had issues wih modified cameras? It's getting very frustrating and to the point of unusable.
Thanks
The artefact isn't visible in all images and I think it starts to appear over time which makes be wonder if this is a sensor problem over heating. It's impossible to remove by post processing.
It seems to disappear by switching off the camera for a bief period and then shooting again. Last night i was shooting 2 minutes tracked exposures, but it also seems to be visible in 1 minute frames and
I've cleaned the senor using a dry cleaning brush i have but it seems the same.
Has anybody seen anything similar or had issues wih modified cameras? It's getting very frustrating and to the point of unusable.
Thanks