I imaged the Pelican Nebula at the Kelling Heath Equinox Starparty earlier this month using my ASI533MC, Altairastro X-Wave 80mm refractor and CEM40 mount. It was captured over 4 nights, 36 x 5 min Ha/Oiii and 63 x 5 min Sii/Oiii subs, though I did lose some due to cloud. Total 8 and 1/2 hours.
All processing was done using Pixinsight. The subs were integrated using WBPP and the individual Ha/Oiii and Sii/Oiii masters had gradientcorrection applied before using a script, DBXtract which creates separate Ha,Oiii and Sii mono images together with a SHO combination.
I then used SPCC to colour calibrate the stars in nb mode followed by BlurX to tidy up the stars and bring out some detail in the nebula.
Generalised hyperbolic stretch was used to create a non-linear image before I removed the stars using StarX. An application of Deconvolution and NoiseX reduced the noise in the image whilst maintaining details. Narrowbandnormalisation then adjusted the Ha and boosted Oiii and Sii to improve the colours in the image. HDRtransformation increased the detail in the Pelican followed by some histogram and curves adjustments.
I then used Pixelmath to unscreen the star image into the nebula image and did a few final curves adjustments.
My second image is an HOO version. I basically followed the method above but used Easy soft stretch to create the non-linear image instead of Generalised Hyperbolic stretch.
This is my best attempt at the Pelican Nebula to date.
Click on an image to get a closer view
Pelican nebula SHO
Anne Startup
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