ASI294MC Pro - Colour Balance Problem

shaunjackson

Hi - I have just started encountering a problem with the camera - it is recording way too much Blue and this is actually destroying my images

I have the following drop box folder showing the files and details

https://www.dropbox.com/sh/7a5twz41b32cza2/AAC1L_pOIsoEAOh5udkxnXKKa?dl=0

The "bad" folder holds fits and debayered file for when it was too blue

The "good" folder is from a few days earlier where it appears normal

Both are taken from the same location - at similar times of night and with the same equipment (Esprit APO Triplet with flattener, Optolong LP Filter)

Here are the statistics from pixinsight

https://www.dropbox.com/sh/7a5twz41b32cza2/AABx4yGsnEP1GBQYOFLnnbqJa/bad?dl=0&preview=statstics.JPG&subfolder_nav_tracking=1

5x as much blue as red

and produces a stretched image like the following

https://www.dropbox.com/sh/7a5twz41b32cza2/AABx4yGsnEP1GBQYOFLnnbqJa/bad?dl=0&preview=stretched.JPG&subfolder_nav_tracking=1

but a few days earlier all seemed ok

Statistics

https://www.dropbox.com/sh/7a5twz41b32cza2/AABtpdK02MDSFsXKCVnC0rlRa/good?dl=0&preview=statistics.JPG&subfolder_nav_tracking=1

Blue about the same as red and green (green a little dominant)

Stretched version

https://www.dropbox.com/sh/7a5twz41b32cza2/AABtpdK02MDSFsXKCVnC0rlRa/good?dl=0&preview=stretched.JPG&subfolder_nav_tracking=1

both sets of pictures were taken under similar conditions - clear sky - virtually no moon - and at similar times of the evening and using the same ccd temperature (-10 degs)

The only capture difference i can think of is

for good - it was 240s captures

for bad - it was 180s captures

I don't know what to do to fix this - any help is really appreciated

moson

The white balance may be changed before you were shooting.You can try to adjust the white balance before shooting.

shaunjackson

i could not see any setting to adjust the white balance in any of the software supplied with the ASI294MC

I think i may have sorted it. I re-installed the ZWO drivers and that seemed to correct the problem

moson

We adjust the white balance in post processing and attached the image for your reference.Please try ASIIMG to see whether the problem persists, and I recommend you using ASIIMG for DSO imaging, it has auto White Balance feature. And do not need to change WB manually.