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Deep Sky Lucky Imaging

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#1 CygnusBob

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Posted 14 January 2020 - 02:37 PM

Amateur astronomers have been using lucky imaging for planetary targets with great success. The basic strategy is to obtain a large number of short exposure images in order to “freeze” the turbulence and then select the sharpest images for alignment and integration. Short exposures are valuable because the biggest effect of turbulence for small telescopes is image jitter. For long exposures, the image jitter gets averaged out, just generating a blurred image. The problem with doing this with deep sky objects is that the number of photons collected in a 1/60 of a second is rather small in most cases. This makes it hard to determine an image shift accurately. However lucky imaging can still help sharpen DSO imagery.

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  • Ptarmigan, SteveInNZ, Astrola72 and 2 others like this

#2 JohnBear

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Posted 14 January 2020 - 04:55 PM

Thank you. Excellent article for those of us that want to dig into and understand the science a bit.



#3 JuergenB

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Posted 18 January 2020 - 01:35 PM

The results of DSO lucky imaging can be very stunning. In Oldenburg, Germany, Carsten Dosche uses a very sensitive Andor EMCCD camera together with his C9.25 and gets remarkable results  at 1 second exposures under far from optimal seeing conditions. Occasionally, he also could use the GSO 16 RC of René Rogge at Leerhafe. Check out Carsten's astrobin site.

 

Juergen



#4 xthestreams

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Posted 05 November 2020 - 08:43 PM

Incredible article.




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