Hi all,
I've been searching around the net to find out how to produce Dark, offset, bias, flat etc..
Now, I have the drift of how they are done, Although, when I produce my frames and use DSS when stacking my images. My final images come out either
A- Very very very grainy with an excess of 30k+ of extra stars (original image had 154 registered stars)
B- Very very very dark where I lose all sorts of finer detail (e.g Nebulosity) and post processing is next to impossible.
I should also point out im a very big noob at this hobby, My the learning curve!
To proceed, doing a google search on some examples on how frames should look. Mine tend to look nothing like them at all. Even when I follow the correct procedure to create them.
For example, when I take, say a 30 second dark frame to match my light, with NR on, I get a completely black screen (using Iris, I get 142 hot pixels at find hot setting of 10!). With NR off, I get again, A completely black screen with a slight scattering of red/green pixels. Is this right??.
So, if anyone here can help me out with recommendations or point me in the right direction. I would be much appreciated.
Here is a Jpeg example of my first autoguide of M42 which I am trying to process as my practice run. And an example of my dark frame at 30s and 1/4000 (flat???).
1: Dark
2: Flat???
3: Some nebulae in the sky...
Thanks in advance
Rob.
http://users.tpg.com.au/en1gma83/images/dark.jpg
http://users.tpg.com.au/en1gma83/images/dark1_4000.jpg
http://users.tpg.com.au/en1gma83/images/m42.jpg