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Thanks everyone for the help and advice with this, it is appreciated.
Yes i had a typo there when i said the lights were done at 22000ADU,
it was suppose to be Flats.
I have been playing around with different ADU vales, and the last one was 22000ADU.
It is sounding like ( as most of you are telling ) that the Flats are off, I am going to go back and have another look at APT as i am missing the main part of the instructions that everyone is telling me.
(Adjusting the brightness and achieving a “ADU range” on the histogram of roughly between 8500 and 35,000 ADU or up to half way)
I have just been selecting an ADU, say 22000, then letting APT do it Flats aid calculation.
So there is a way to actually measure the ADU of the flat panel first?
Then adjust the brightness to get the histogram to sit in the middle.
Then with this number, you then set the Flats aid to this number.
I will take a look into this.
I will have a look in the afternoon after i get some sleep, on a night shift leg this week.
I will then work through the rest of the advice given on here, most of it i have done correctly, just not the first part.
I don't think i am getting stray light in the imaging train, the bias frames all look black, might even just take it outside in the daylight and take some darks just to see if there is any light showing up in the frames also.
All very much appreciated.
Thanks heaps,
Peter.
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