Quote:
Originally Posted by asimov
Well it is noisier than ISO800 yes. I'm no guru on the subject but the other night I was out there imaging & like you, I was limited to 35 secs before I got egg shape stars; I tried ISO 800 & wasn't satisfied with the amount of data collected so I jumped to 1600 & tried an exposure of 25 secs. I also tried using darks by both procedures (In camera noise reduction &/or taking a set of darks after the lights) The darks I took after the imaging run didn't kill all the noise but the in camera noise reduction did.
Here's the 1600ISO example. I'm quite happy with this amount of noise! 
http://i599.photobucket.com/albums/t...arinafinal.png
BTW No noise reduction in editting was done with the image, just the noise reduction from the camera. |
Sorry John, I skipped over you there,
I will try to iron out the PEC and or fine tune the polar alignment without having to go to the autoguiding just yet and then give ISO1600 another bash. I can certainly see the difference in data in your pic with similar exposure to mine, albeit on another object.
I can't see in the camera any section to turn on or off the ICNR, not sure if the 1000D has it? EDIT: Found it, in the Custom Functions section - thanks
Might go and have another look.
Cheers
Chris