No color in (stacked) pictures with aisiar and Canon EOS 600D

Twinkeldonk

Hi my brandnew Asiar has problems. PA, Goto Object and framing, work like a dream. But it delivers pictures with hardly any color. My Flamenebula with Nina was clearly red colored and clear yellow stars also shown. With Asiair only a white pale Flame to see. Als when I take a picture outside of a house on the other side, theres hardly color when taken with Asiair, but when direct with Canon EOS 600D - Rebel T3i ,
on sd card no problem. Also the pictures with asiair show a grid. Any ideas?

Tech@ZWO

Twinkeldonk Can you plaese share some images of the 600D taken?
About the problem on T3i, we are still looking into this.

Twinkeldonk

Here are the requested pictures, showing that theres a big lack in color in the images produces by the Asiar in combination with the Canon EOS 600D camera.
picture 1 - Asiair - Canon 600D - Siril stacked images Flame IC434
picture 2 - Nina - Canon 600D -- Siril stacked images Flame IC434
picture 3 - Direct shot with Canon on SDcard - single shot outside blue rooftop building and green trees
picture 4 - Asiair - Canon 600D - single shot outside rooftop building same as picture 3 but lacking colors with Asiair

I hope you can solve this soon, so I can finally use my Asiair Plus 256GB.

The reason that I finaly bought the Asiair is that it was annonced that with the new software release my camera Canon EOS 600D would be supported, and also my other camera Sony A6300. But now its a little bit of a mess and I have to go back to Nina again.

nicolas

Twinkeldonk

If you are on version V2.1.2 (the last version available), there is a known bug with Canon cameras (and it is confirmed that the 600D is concerned). The dimensions of the fit files are 1 pixel off so the debayer pattern is not the good one anymore.
See the thread "ASIAIR v2.1.2 has been released!" for more informations.

I think you can get you colors back by changing the Bayer pattern in Siril

Twinkeldonk

nicolas I am on the latest version 2.1.2. I have all settings as needed, M, BULB, RAW etc. When I look at the specification of RAW format in Camera menu it says RAW 5184 x 3456
When I look at .CR2 file taken from the SD card directly , properties it says 5202 x 3464
And when I look at the fitsheader of a file from Asiair it says W=5202 and H=3464

I go take a look into Siril changing BAyer pattern thanks

Twinkeldonk

nicolas

Twinkeldonk The changing of Bayering pattern brought the color back. I am not sure if it is 100% back but a lot better nw. Thanks Nicolas. I had to change it from the default RGGB to GBRG pattern, then the red came back.