19 June 2021: Our upload server https://upload.astropixelprocessor.com/ has been migrated successfully to our new office with higher upload and download speeds (nearly 10MByte/sec up/down ) ! We now have 1 general upload user called: upload with password: upload. The users upload1 - upload5 have been disabled.
31 May 2021: APP 1.083-beta2 has been released ! APP 1.083 stable will follow soon afterwards. It includes a completely new Star Reducer Tool, New File Saver Module, Improved Comet registration and much more, check the release notes here!
Sony A7/S/R mark II full spectrum internal light leak correction
What process would you recommend for processing images taken with second generation Sony A7 cameras?
Their problem is that there is an internal light leak, due to an infrared LED in the shutter, moreover, the sensor moves slightly due to the internal stabilization mechanism making the dark less effective.
Using "Adaptive data pedestal" the result should improve significantly but as you can see from the attached image, the stacking output is pretty awful ...
Sony A7RII, 680x30", ISO 3200 (300 flipped 180°)
240 darks, 20 flats
Everything else set to "automatic"
I think I can't do better to fight gradients but I'm probably wrong...
Here is a single dark, unstretched:
You can clearly see the patterns in the final image.
Is the adaptive data pedestal performing bad with this kind of data?
I thought that flipping the sensor 180° would help APP to determine a better normalisation map, but in fact I just destroyed both sides of the picture doing this...
I finally arrived to a "good" image with this data but you'll imagine how much work it represented:
Thanks in advance!