› Forums › Spectroscopy › ISIS flat field vertical gain correction tool › Still use the flat
30 September 2019 at 10:02 pm
#581423
![](https://britastro.org/wp-content/uploads/2019/12/picture-5132-1575710618-80x80.png)
Participant
Hi Robin, I was not proposing not to use the flat just that if you used the vertical gain you would lose the pixel to pixel response variations. Maybe these are less important than the ripples.
As always experiment will reveal all!
I look forward to seeing what you find.
Regards Andrew