After I posted my previous version of this image, I realized that there was a lot of star trailing going on which meant that the image was not as clear as it could be. After manually culling through the sub exposures and removing ones that did not have round stars, I reprocessed the image with only those sub image. This means that there is less image time, but actually increases the signal-to-noise ratio. If you look at the enlarged version of this image versus the one from yesterday, you can really see a lot more detail in the galaxies. Note also that I cropped the image today so it’s not as tall as yesterday’s version.
September 1, 2008
NGC7331 and Stephan’s Quintet – Reprocessed
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