+RonC Posted March 21, 2020 Share Posted March 21, 2020 What difference is there in exposure times between a CCD cam and a CMOS cam? I use 300s + on my CCD but seen CMOS exposures of .8 sec (x 1000), are they so different? Cheers Ron Link to comment Share on other sites More sharing options...
+Ibbo Posted March 21, 2020 Share Posted March 21, 2020 Yes Ron they can be a lot different. But and here comes the but , they appear more noisy and you therefore collect loads and loads of them, which uses a lot of drive space and takes longer to stack. Swings and roundabouts. CMOS are geting better but IMO have not caught the CCD as yet. +RonC 1 Link to comment Share on other sites More sharing options...
+RonC Posted March 21, 2020 Author Share Posted March 21, 2020 Thanks Steve, food for thought.... Link to comment Share on other sites More sharing options...
+Ibbo Posted March 21, 2020 Share Posted March 21, 2020 CMOS converts may disagree though. Link to comment Share on other sites More sharing options...
+RonC Posted March 22, 2020 Author Share Posted March 22, 2020 Trouble is, I have a limited budget so either a new CMOS or a used CCD.... Link to comment Share on other sites More sharing options...
+Derbyshire Dave Posted March 22, 2020 Share Posted March 22, 2020 I think in general, you're always better to go for the later technology. There are often several different levels of improvements at the same time. One issue with CMOS cameras is amp glow, where you get a regular pattern caused by current flowing in the substrate. I was really worried when I first saw the amp glow on mine, but the same amp glow appears on the darks, and so using darks in DSS just simply removes it on one shot. Very pleased with my CMOS ZWO ASI 183LMM Pro cooled camera. Link to comment Share on other sites More sharing options...
Clive Posted March 22, 2020 Share Posted March 22, 2020 In terms of exposure length to get the same result, I would have thought that is dependent upon the sensors quantum efficiency. They both convert photons to electrons, but I think CCDs still do it slightly better. Link to comment Share on other sites More sharing options...
+RonC Posted March 22, 2020 Author Share Posted March 22, 2020 (edited) I cannot afford a Pro cooled CMOS, that's the problem!! Looking at the ZWO ASI 385MC which seems to be about my limit but looks to give pretty good results! Ron Edited March 22, 2020 by RonC added text Link to comment Share on other sites More sharing options...
+Ibbo Posted March 22, 2020 Share Posted March 22, 2020 Ron save for a bit longer and get a cooled cam. Cooled is the way to go. Link to comment Share on other sites More sharing options...
+RonC Posted March 22, 2020 Author Share Posted March 22, 2020 (edited) I've got no patience Steve and I'm still saving for a caravan!! I am getting emails from AB&S though! Ron Edited March 22, 2020 by RonC added text Link to comment Share on other sites More sharing options...
Clive Posted March 22, 2020 Share Posted March 22, 2020 Whilst your saving for the caravan, just stick your Canon on the end 😆 +RonC 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now