Intervalometer quirks

[vineyard]

Hello,

I was wondering if anyone has experienced something like this before.  I've been tinkering w DSLR imaging (quick to setup!) on an iOptron Skyguider Pro.  I can get 150s lights without any trailing (could probably push that more but it works for the time being).

I set up an intervalometer to take say 60 images - each 150s long, with a 2-10s interval between them.  The camera takes them but then towards the end of the run, the lights all start being 35s long only (as well as a couple that are weirdly 50-something or 40-something seconds).  There's enough battery in the intervalometer - I extended the interval between images to 10s (in case its image loading time) & its still the same.

The camera battery does start to run quite low - haven't tried it plugged into the mains yet.  Could that be the reason?

Cheers,

Vin

[EntropyTango]

I use a cheap Chinese intervalometer and it works fine for me

Other than having to take the battery out to turn it off!

I suspect it might be your camera battery

[Alien 13]

It could be the camera battery as mentioned above but also check that you have not got the in camera long exp noise reduction switched on. The other possibility is that the buffer is slowly getting filled up but 10s intervals should have been enough.

Alan