+RonC Posted February 16, 2013 Share Posted February 16, 2013 I normally don't bother setting an'interval' time when using the auto-timer to image. Last week I set it for 20secs 'Long' and 5 exps, I got 4 exps of 13 secs and only 1 of 20 secs! Should I be leaving an interval between exposures and if so, how long please? Cheers Ron Link to comment Share on other sites More sharing options...
Guest Eddy Posted February 16, 2013 Share Posted February 16, 2013 On mine you set exposure to whatever you want then the interval to the exposure length + the gap between exposures, I think you should leave like 20 seconds or so to cool between each but it depends on the sub length I guess Link to comment Share on other sites More sharing options...
+RonC Posted February 16, 2013 Author Share Posted February 16, 2013 (edited) Thanks for the link Pat, would seem about 20 sec pauses are the norm. So it's OK to start the next exposure while the previous one is downloading on to the card? Cheers Ron PS Just did 5 x 60sec exp with 20sec intervals. the 5 exposures are 60s,17s,60s,17s and 60sec ?? What's going on?? Edited February 16, 2013 by Ron Clarke Link to comment Share on other sites More sharing options...
+RonC Posted February 16, 2013 Author Share Posted February 16, 2013 Yes, I'm just going to run the same test using BY EOS see if there's any difference! Will let you know shortly! Ron Link to comment Share on other sites More sharing options...
Perkil8r Posted February 16, 2013 Share Posted February 16, 2013 It could be that the camera was busy saving the image to the card for the first few seconds of the next exposure? On my 350d I was advised that in cold weather 5 seconds is as good as anything for subs upto around 3 or 4 minutes. I mostly use 5 seconds in cold weather and around 20 or 30 during warmer weather. I've not had any issues. As pat says, as long as your darks are done at the same intervals etc you should be able to get rid of any noise anyway. The shorter the interval the more subs you can do in a night Link to comment Share on other sites More sharing options...
+RonC Posted February 16, 2013 Author Share Posted February 16, 2013 Well, BYEos was faultless, took 3 lots of 5x60sec without an interval and they all came out at 60secs each! Therefore it must be the digital remote. As Mike says, watching it , it starts an exp while the previous one is still busy!! Ron Link to comment Share on other sites More sharing options...
Perkil8r Posted February 16, 2013 Share Posted February 16, 2013 Have you got mirror lock on? I have issues with mine if I do, so I leave mine turned off. Link to comment Share on other sites More sharing options...
+RonC Posted February 16, 2013 Author Share Posted February 16, 2013 Mirror lock is off. Link to comment Share on other sites More sharing options...
+Graham Posted February 16, 2013 Share Posted February 16, 2013 Have you got the noise reduction on Ron Link to comment Share on other sites More sharing options...
+RonC Posted February 16, 2013 Author Share Posted February 16, 2013 Yes I have Graham? Link to comment Share on other sites More sharing options...
+Graham Posted February 16, 2013 Share Posted February 16, 2013 Yes I have Graham? switch it off Ron. It will half you exposure time. If you do a 60 second sub the camera will then take a 60 second dark so each sub will take 120 seconds, ( or it does on the 350 ) this could well be causing the encroachment of your subs when using the timer. It will make no difference to your data as you will be adding darks anyway. Link to comment Share on other sites More sharing options...
Guest Kheldar Posted February 16, 2013 Share Posted February 16, 2013 switch it off Ron. It will half you exposure time. If you do a 60 second sub the camera will then take a 60 second dark so each sub will take 120 seconds, ( or it does on the 350 ) this could well be causing the encroachment of your subs when using the timer. It will make no difference to your data as you will be adding darks anyway. Oh hell yes turn it off!!!!! Link to comment Share on other sites More sharing options...
Perkil8r Posted February 17, 2013 Share Posted February 17, 2013 Noooooooooooooooooooooooooo! Turn it off, it's the work of the devil Link to comment Share on other sites More sharing options...
+RonC Posted February 17, 2013 Author Share Posted February 17, 2013 Noise reduction now OFF! Will check it tonight as I'm out all day! Will let you know!! Link to comment Share on other sites More sharing options...
+RonC Posted February 17, 2013 Author Share Posted February 17, 2013 That's cracked it!! Thanks everyone for your help!! Link to comment Share on other sites More sharing options...
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