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the Rosette nebula
Imaged from Ocala, Florida through Ha, OIII and SII filters and processed using Hubble palette, assigning SII to RED, OIII to BLUE and Ha to GREEN.
20 minute exposures combined to a total of:
3 hours Ha (binned 1x1)
3 hours OIII (binned 1x1)
3 hours SII (binned 1x1)
Processed in Photoshop using Hubble palette
Imaging telescope: Orion 80mm EON (Focal length 480mm)
Imaging camera: QSI 683 wsg-8
Losmandy G-11 with Gemini II german equatorial mount
Comment
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Comment by Steve Coates on January 10, 2014 at 10:12am
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Thanks Jeff, I use PS to process. To remove the magenta from the image I'll use the Hue/Sat tab and choose the Magenta from the pull down menu and setting either the Saturation or the Lightness to -100 or what ever looks best. To remove magenta from the stars I'll select stars to be worked on and from the Select tab choose Modify and expand to 5-8 pixels and Feather (from the Modify tab) to 2 pixels. I then remove the magenta using the method described above.
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Comment by Jeff McFarlin on January 9, 2014 at 7:41pm
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Awesome. What technique are you using to remove the magenta from the stars? I've been lazy to add that to my process and need to do it.
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