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<blockquote data-quote="BackdoorArts" data-source="post: 495763" data-attributes="member: 9240">First, you may want to do some reading up on settings for star trails.&nbsp; At f3.5 you're likely going to want to boost your ISO to allow as much light as possible.&nbsp; ISO 800 or even 1600 may give you more light with noise that can easily be accommodated in post.&nbsp; Second, make sure long exposure NR is turned off.&nbsp; If not, you'll get 30 seconds of shot and 30 seconds of waiting when you want to be shooting.As for your problem, I suspect your timer and your settings.&nbsp; You have the timer controlling both interval and shutter speed, since your camera is set to bulb.&nbsp; Is it possible that your timer engaged bulb but never disengaged it?&nbsp; In two hours that leaves you with no shot and a burned out battery.&nbsp; Is it also possible that you accidentally set the long exposure time to 30 minutes and not 30 seconds?&nbsp; 30 minutes with 30 minutes of long exposure NR could also drain your battery.&nbsp; It's always best to test that first shot, and then stick around for the first 4 or 5 on the timer to make sure it's doing what you expected it to do.&nbsp; There are far too many stories of simply pushing a button walking away and wondering what happened for me to believe that people didn't do that.&nbsp; You would have known in under a minute that it wasn't working properly, and if say that you did and it was when you left then you would have gotten at least one more image on the card.</blockquote>

[QUOTE="BackdoorArts, post: 495763, member: 9240"] First, you may want to do some reading up on settings for star trails. At f3.5 you're likely going to want to boost your ISO to allow as much light as possible. ISO 800 or even 1600 may give you more light with noise that can easily be accommodated in post. Second, make sure long exposure NR is [B][I]turned off[/I][/B]. If not, you'll get 30 seconds of shot and 30 seconds of waiting when you want to be shooting. As for your problem, I suspect your timer and your settings. You have the timer controlling both interval [I]and[/I] shutter speed, since your camera is set to bulb. Is it possible that your timer engaged bulb but never disengaged it? In two hours that leaves you with no shot and a burned out battery. Is it also possible that you accidentally set the long exposure time to 30 minutes and not 30 seconds? 30 minutes with 30 minutes of long exposure NR could also drain your battery. It's always best to test that first shot, and then stick around for the first 4 or 5 on the timer to make sure it's doing what you expected it to do. There are far too many stories of simply pushing a button walking away and wondering what happened for me to believe that people didn't do that. You would have known in under a minute that it wasn't working properly, and if say that you did and it was when you left then you would have gotten at least one more image on the card. [/QUOTE]

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