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Wednesday, September 23rd, 2009
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NGC6830 Open Star Cluster

I caught this DSO in the same series that I acquired the Dumbbell nebula in, so the same procedure was used to recover it, described below. However, the post-processing was different here, particularly with regard to color saturation, which I pushed hard to bring out the colors of the stars.

I've taken some criticism for this kind of processing in the past, so let me say this: I view turning up the saturation on a faint color the same way I do turning up the volume of a microphone down amongst the insects. Just as you can now hear the chittering of tiny mandibles and the tap of tiny feet, which you would never otherwise perceive, now you can see the colors of the stars, which likewise you would not perceive. The colors are there; but they are faint. I simply "turned up the volume" for you. 😊

I would also point out that in many photos you see from the Hubble, etc, those aren't real colors at all, but channels used to emphasize IR or UV or other spectral components that again, you would never otherwise perceive.

One thing this shot emphasizes is that where a planetarium program shows perhaps 20...30 stars in a region, an actual photograph will turn up many thousands for the same area. This was no exception; Stellarium only hints at what is in this area of the sky. It is unbelievable fun to look at a picture that's just been taken and drool over the magnificent array of stars and other objects therein.

#astro #tracked

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