SH2-207+SH2-208 Reprocessed

Had some time to reprocess this old image.

Not so much stretched...

Full size on Astrobin

Old one here

SH2-101, The Tulip Nebula

The Tulip Nebula, or Sharpless 101 (Sh2-101) or the Cygnus Star Cloud is an emission nebula located in the constellation Cygnus.

Here's only Hydrogen alpha with 9h 30min of exposure (19*1800sec). Colors will hopefully follow...

M57 Finalized

I added 2 more hours of Hydrogen alpha and some RGB data also. So here's 7h of Ha and total of 10h 20min of exposure (HaRGB=420:60:70:70 min)

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IC5146 Reprocessed

Tried to tweak more of the Hydrogen Alpha details. Not so big changes visible....

M92 reprocessed

Not sure if this is better or not so I'll let the viewer to decide.

The core is a bit darker and maybe some star color has been enhanced.

M92

I took an hour of total exposure of this beautiful globular cluster. M92 is one of the brighter globular clusters in the northern hemisphere, but it is often overlooked by amateur astronomers because of its proximity to the even more spectacular Messier 13. It is visible to the naked eye under very good conditions.

It was discovered by Johann Elert Bode in 1777, then published in the Jahrbuch during 1779. The cluster was independently rediscovered by Charles Messier on March 18, 1781 and added as the 92nd entry in his catalogue. M92 is at a distance of about 26,700 light-years away from Earth and has a magnitude of 6.5.

Exposure of this image is:
                          L             =   10 * 180"
                          RGB       =     5 * 120"
                          TOTAL   =    1 hr

Full size in Astrobin

Cocoon Nebula with Ha

I took 4,5 hrs of Ha to boost the nebulosity and some extra RGB to add some color.

Processing was quite difficult because the tonemapped Ha was so strong that the colors were lost in the nebula. I think I added only 30% of Ha to the red channel and combined the L+Ha for luminance. So it's basically LHa(HaR)GB combination...

Total exposure is now 10 hrs:
                                    L        = 10 * 900"
                                    Ha     = 9 * 1800"
                                    RGB  = 12 * 300" (bin2*2)

Full size again on Astrobin