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Advice on Heart Nebula - IC 1805


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Hi all,

was hoping for a bit of advice about sub lengths for imaging the heart. I'm using a modified dslr -but unguided (longest I've tried without trailing is 2 mins on a good day). Will this be enough to extract some detail out of the nebula if I were to acquire 2 or so hours of data? Not seen many posts of the heart with unguided setups and afraid I'm just not quite at the stage to start guiding 




Edited by abodee2
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It's moderately bright so you should do OK (I assume you're using the 150PDS at f5 or f4.5 with a reducer). Here's a single 2 minute sub (processed a bit) at f3.5 and 135mm focal length.


... and this is 38 minutes at f3.5 (cropped a bit).


So a roughly comparable amount of signal if you can manage your target of 2 hours.

You might want to check the framing though, will it all fit in with a 150PDS?

Edited by Knight of Clear Skies
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