|
Terry, I havent seen that, thats very interesting. I notice the total noise for a 9e read noise cam (ST10) doesnt change much from -5 to -25, you have to go way past that to make a big diff (pg 25, with 20min exposures, common for me), and the 6303 is 13.5e !. He says somewhere very deep cooling doesnt help hi read noise cams as much as the 16803, as the read noise dominates.
I can see now why I get a fair bit of noise with 20min exposures and very low signal ADUs with the ST10 regardless of temp below -10, and the value of deep cooling with a low read noise cam, it all makes sense now ;-).
|