M16 Eagle Nebula -- SHO (Mike Mulcahy)

Celestial hemisphere: Southern · Constellation: Serpens (Ser) · Contains: Eagle Nebula · IC 4703 · M 16 · NGC 6611 · Star Queen

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M16 Eagle Nebula -- SHO

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M16 Eagle Nebula -- SHO

I took 60 5 minute exposures of each filter (180 total) but due to guiding problems could only use 21 of them. The C8 is new to me and I am trying to guide with a guide scope with obvious mixed results. I had misshaped stars and only used exposures with and eccentricity of less than .6. I was pretty sure the data was useless so I did not process it initially. I am spending the summer away from my imaging gear so I decided to give this data a try. I am surprised I could make this image with the little data I had. Processing was mostly PI with some final touches in PS. The steps were:

I started with blink, subframe selection, WBPP with percentile integration and no flats. I then applied ABE, CC, and MSLT for linear noise reduction. I then used color masks to push the colors to the hubble pallet using Steve Miller's recommended technique. Next I extracted a lum from the color master and deconed it. I now ran starXterminator to remove stars from color image, cleaned up the color nebula, darkened the star image background and saturated the stars, and finally added the stars back to the color image using pixel math. I then saved .tiffs and moved to Photoshop. I combined the nebula and star image using luminance layering and used camera raw to touch up contrast, remove noise, and add saturation. I applied local hi-pass sharpening and minor curves adjustments.

Original
Final
B

B

Description: Reprocess with additional sharpening with Redfield Sharplet.

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Messier Objects
Nebulas

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Status	Basic success
Started	...
Astrometry.net job	5984035
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M16 Eagle Nebula -- SHO

M16 Eagle Nebula -- SHO

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M16 Eagle Nebula -- SHO

M16 Eagle Nebula -- SHO

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