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Mostafa

What images can I expect to get from this setup?

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I was wondering what images of dso I could get with this setup. How and how much would my images improve if I added in a decent file flattened and what would happen if I exceeded the maximum telescope magnification with Barlow lens.9623B4CF-F5F0-41EC-B31D-7906DAF6B4D7.thumb.png.f5a4be7d7fd418a02686e8def082c2f0.png

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F9040CDA-41F8-4249-A8C5-463A81162342.jpeg

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Have a look on the Astrobin website, you can search the images using the terms "72ED" and/or "DSLR", that will give you an idea of what's capable with that scope and camera. Be sure to look at what mount was used though! 

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The mount is the limiting factor in that set up. I suspect you’ll be limited to 30-60 second subs depending on your polar alignment and acceptable of rejection rate of subs. 
 

I think a field flattener is good, but I would go for a better mount first.

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EQ3 needs careful setting up to give its best and a more rigid (or modified) tripod, but if you get up to 60 second unguided subs you can add guiding and easily achieve 5 minutes.

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Guiding is the life blood of astrophotography.

Olly

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5 hours ago, Mostafa said:

what images of dso I could get with this setup.

Hi

Not sure where you are but from 38° N at the moment you could get m31, the Andromeda galaxy, and whilst you're waiting for it to get high enough, choose a star cluster in Cygnus. Add to m31 each night whilst choosing a different cluster beforehand. Even better with a field flattener.

HTH

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