Hi Guys,
Last night as often before I do some imaging, "not that I got any in last night"
I sometimes take some flats before the event.
This is all OK, and usually they turn out quite well, however last nights lot, after combining 20 or so, ended up with one fairly distinct small square, smudge, dot, what ever you want to call it, and two not so distinct square, of the same.
Now that i have the master flat of this event with these marks in them, will this have effect on the usefulness of the Flat, or will it not matter.
I am very perticular about dust, and air blow the sensor very regular, or could this have been caused from some dust on the Optical train, and/or the actual white cover i used for the flats.
My question really is, not about what it is, but will it matter.
Thank You.
Leon
