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NGC 6357 War and Peace Pebula

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#1 APshooter

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Posted 13 June 2019 - 02:27 AM

Another Ha image from my Rasa 8!  This was my longest integration yet, 3.7 hours over two nights.  First off, this is an incredibly low object for Indiana skies.  It baaarely rises above my neighbor's roofs...I have to shoot between two houses to even image it.  I have a window of about 90- minutes where this happens, just past the neighbors' tree and the other neighbors roof.  Normally this time of year atmospheric fog or haze would obscure this object.  But on the first night conditions were excellent...the sky was so blue I call it 'California Blue Skies'.  Unfortunately in swapping out my canon M50 for the 1600MM, I got a space caught beneath the camera adapter plate.  On that first night the nebula was in sharp focus, however, the stars on the edges were donuts!  Arrrgh.  So i imaged it the second night, this time with perfect stars...but haze obscured most of the sky.  Fortunately, I was able to combine both night's efforts into APP, treating the 2 files as a mosaic.  APP blended the two nights' data into one nebula and made the nebula itself smoother.  I extracted the surrounding starfield and smoothed that with Camera Raw Noise Reduction, then overlapped it and blended the nebula into it.  Two separate layers, one Screen and the other Overlay boosted the detail in the nebula without enhancing the noise.

 

get.jpg?insecure

 

 

 

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  • NGC 6357 Version 4 CN.jpg

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#2 APshooter

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Posted 13 June 2019 - 02:28 AM

And just to show you how LOOOW this object is from my location, check out the neighbors' roofline.  That's the roof and gutter right below the object.

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  • Neighbors roof.jpg

Edited by APshooter, 13 June 2019 - 02:28 AM.


#3 Sven_Bortle5

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Posted 13 June 2019 - 02:39 AM

Looks really cool and it's quite faint as well. If I'd try to Photograph anything that low, I'd collect all the lights of a nearby airport. wink.gif 



#4 psandelle

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Posted 13 June 2019 - 08:58 AM

Nicely done (especially under such trying circumstances)! Looks like it's time to tear that neighbor's house down "in the interests of science!"

 

Paul


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#5 Mert

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Posted 13 June 2019 - 03:22 PM

Extremely well done under these circumstances!

That came out very well.

So APP really helped out, great stuff!




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