The exact duration for your flats can be tricky, I have had to use a bit of exposure bracketing to find the sweet spot for each filter when using the H694 and AG12 and then keep these in a library, of course I don't move my rig so this would be harder for you and your container ship worth of travelling gear . The 16803 seems to be much more forgiving and I shoot for around 30,000 for each filer and this works well.
The exact duration for your flats can be tricky, I have had to use a bit of exposure bracketing to find the sweet spot for each filter when using the H694 and AG12 and then keep these in a library, of course I don't move my rig so this would be harder for you and your container ship worth of travelling gear . The 16803 seems to be much more forgiving and I shoot for around 30,000 for each filer and this works well.
Mike has the Aurora Flat Field Panel which very evenly illuminates the scope for the best possible flat. Ive never had luck with sky flats theres always still some gradient in them.
Mike has the Aurora Flat Field Panel which very evenly illuminates the scope for the best possible flat. Ive never had luck with sky flats theres always still some gradient in them.
I might be mistaken but I think the concentric ring effect I see in Dave's RASA images is not from sky gradients but use of incorrectly exposed flats...?
Given the location of the ca mera on these socpes, use of a flat field panel would require a dew extension tube of course.
Great image! Hope you get the flats sorted. I use a flat panel as well, but again, not using a RASA so can’t help much. Lots of trial and error coming up I suspect and probably easier to do that at home then you will have it nailed for when you travel.
i need to tame the beast
. The 16803 seems to be much more forgiving and I shoot for around 30,000 for each filer and this works well.
