|
Humayan
PM me your address and I'll happily cut you a disk with my raw data if you want to experiment.
I take flats, darks of different duration and bias shots. I haven't worked out what a flat dark is - that one confused me!
I am still learning the basics of stacking - re-reading the documentation. My process with DSS has been:
1. take one light frame image and group all my darks of similar duration together so I get master darks for 600 secs, 900 secs, 1200 secs, 1800, 2400 secs, 3600 secs - stored as TIF files.
2. group all my images over 2-3 nights on a target and do a median combine with master darks (for the same durations), master flat and master bias.
3. on the processed image (camera is set to Canon 400D) set the saturation to +21%, balance the colours so they all align as closely as possible - in the middle of the histogram, then go to illumination - in the dim zone move the darkness right up to the far right, shift the mid zone so it just starts to rise when it hits the 3 colours left edge, and change the bright zone to flatten the curve some.
I then store this picture - which looks raw (a bit pastel colours but quite good detail, some dim regions look like they need smoothing), but I store it as a 16 bit tif (not 32 bit rational)
4. Import it into CS4 (and here's where I probably botch it all). Stretch the data (levels and curves 2-3 times). Try to use select colours to grab an area I want to sharpen or smooth (no processing of layers) nor stacking of shots of different duration in DSS and then combining in CS4 using its HDR function.
Its generally here I get somewhat lost and destroy fine detail!
Finally get ride of any small smudges 2-3 smears from the LPS filter, shrink to 1200 and store as a JPG to publish.
So as I said - ALOT to loearn!
Matt
|