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Working out how long to image for?
Hi, I am hoping someone might be able to offer a bit of advise on this if possible please.
I am working on imaging the Cats Paw Nebular, NGC 6334
Basically i am trying to work out if there is a general rule to work out how long to image a particular target for?
I have tried to image this with 120 second exposures, but i am thinking that it needs more to get in more detail and a better image in general.
Would something like 300 second exposure be a better option for this nebular?
I realize that apertures play a part in this also.
I am using a skywatcher 150 Evostar ED scope, not ideal, but it is working well for me.
Camera is a Canon EOS 600D
I am using PHD2 multi star guiding and APT as the imaging software.
I get a good polar alignment and so far haven't had any issues with star trailing.
Any advise would be greatly appreciated.
Thanks.
Peter.
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