My best M83

[batema (Mark)]

Hi,

This is a stack of 8 x 10 min lights, 3 darks, and flats and bias frames also. A quick question on the flats. I took 20 this morning just before the sun rose with a white shirt covering and pointing straight up at the sky. I did not touch the focus from the previous night. I took 20 at 1/125 and the histogram was between half way and 2/3 to the right. Is this histogram position OK for flats?

The shots were taken through Williams Optics FLT110 triplet and Canon unmodified 400d at ISO 800. Temp was between 22 ans 23C. Guided with PHD on EQ6Pro. Stacked with Deep Sky Stacker and processed in Photoshop CS3.

Any advice on processing would be valuable. I have had two great sessions with Paul (1Ponders) but any extra advice would be great.

Thanks

Mark

[aworley (Alex)]

Hi...I am no guru, but everything that I have read about flats and what seems to work for me is to have the histogram between 1/3 to 1/2 of the histogram....at the same ISO as the lights....

Alex

[[1ponders] (Paul)]

double thread.

Existing thread here
http://www.iceinspace.com.au/forum/s...ad.php?t=41824

Thread closed