KStars is not merged yet so you need to fetch it from my fork invent.kde.org/nou/kstars/-/tree/xisf0.2

I can confirm now that with a compile from kde Build: 2023-03-13T19:37:51Z
that XISF file format storage also works with the gphoto indi_nikon_ccd aka. the Nikon DSLR driver, just as you would expect

Thanks!

Cheers

Glad that it works now.

I have come across a couple of random frames where it looks like it doesn't read from the camera correctly and you are left with a weird image artifact. See attached example top half of the image is ok but the bottom half is messed up. I have seen this happen at least 4 times over several nights. Usually, the next image will be fine. I don't remember seeing this issue while using the FITS format certainly not as frequently as I have seen of late. I'm not ruling out my own equipment but it seems to have cropped up since I switched to XISF. I'm running INDI server on a fanless pc on Ubuntu 22.04.02 and EKOS via my laptop. Images are stored remotely on the Ubuntu PC. camera is an Altair Astro 26C

Has anyone else come across this issue?

Logging for attached affected image.
[2023-04-17T22:47:09.610 GMT Daylight Time INFO ][ org.kde.kstars.ekos.capture] - "Capturing 600.000-second image..."
[2023-04-17T22:47:09.618 GMT Daylight Time INFO ][ org.kde.kstars.indi] - Altair AA26CTEC : "[INFO] FPS rate limit is set to unlimited "
[2023-04-17T22:47:09.633 GMT Daylight Time INFO ][ org.kde.kstars.indi] - Altair AA26CTEC : "[INFO] FPS rate limit is set to unlimited "
[2023-04-17T22:57:12.915 GMT Daylight Time INFO ][ org.kde.kstars.indi] - Altair AA26CTEC : "[INFO] Image saved to /Light/NGC 5195_Light_600_secs_002.xisf "
[2023-04-17T22:57:12.916 GMT Daylight Time INFO ][ org.kde.kstars.ekos.capture] - "Remote image saved to /Light/NGC 5195_Light_600_secs_002.xisf"
[2023-04-17T22:57:12.931 GMT Daylight Time INFO ][ org.kde.kstars.ekos.capture] - "Received image 2 out of 40."
[2023-04-17T22:57:12.954 GMT Daylight Time INFO ][ org.kde.kstars.ekos.capture] - Dithering...
[2023-04-17T22:57:12.956 GMT Daylight Time INFO ][ org.kde.kstars.ekos.capture] - "Dithering..."
[2023-04-17T22:57:12.959 GMT Daylight Time INFO ][ org.kde.kstars.ekos.capture] - "Dithering..."
[2023-04-17T22:57:12.964 GMT Daylight Time INFO ][ org.kde.kstars.ekos.guide] - "PHD2: Dithering started."

Can you please upload one good and one bad image? Best with one in FITS format. Do you use compression? Do you shot full frame or do you set some crop? Thank you.

I haven't shot any FITS files recently. If one of the old ones will suffice I can upload it when i get home. I don't use compression or crop the image.

Here is a drop box with a good (004) and bad(002) XISF

www.dropbox.com/sh/8esi2yoq2757we9/AAAj4...Oa7Al-5LBKrMwpa?dl=0

I have no idea how this could be caused by XISF code. I suspect that this is some camera driver issue. There are gaps in stars that I can't imagine how could be caused in libXISF.

Please test this with FITS and if you see same problem please start new thread about this issue.

Cool thanks for the response.