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Script for star trails

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Script for star trails
« on: 24 / February / 2012, 04:59:45 »
Hi ,
I new to script writing for CHDK.
Can anyone please help to write script to take time laps star trails.
I am using Canon Powershot SX40 HS
No of shots: 150 (could be more to get better effect)
Exposure: 30 sec
aperture: F16

First shot at F2.8 for 30 sec and after that all shots at F16 to get following effect: brightness in starting fo trail.

appreciate your help .

"Saying a Camera takes Nice Pictures is like Saying a Guitar Plays Nice Melodies"

Re: Script for star trails
« Reply #1 on: 03 / March / 2012, 08:55:26 »
I'm new to CHDK script writing but seems like it would be easy to modify one of the intervalometer scripts with a flag and conditional statement that changed said flag so that only once you would get a picture with your desired settings.  The rest of the loop would skip over that operation because of the flag.

What method do you use to sandwich all the photos together after the fact?


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