Bubble Nebula - Narrow Band vs Broad Band

[Rodd]

The first image is a recently completed LRGB composition using the C11Edge  and ASI 1600, and the second image is a narrow band (SHO palette) image I completed last year sometime. with the TOA 130 and ASI 1600.  I have worked on imaging more RGB/LRGB nebula.  I really like natural light palettes.  I find it much more challenging in my sky, though very rewarding when a halfway decent image is the result (we won't discuss the other ones).  The Bubble nebula started as a test--I wasn't sure if short unguided exposures at F10 would work or not.  Seeing was good for half the shoot, and poor the other half (including Lum).  I may try to collect another luminance dataset on a night of very good seeing.  The lum data had a FWHM a full arcsec above the red and green.  Blue was in between. 

C11 F10, 2800mm, unguided R 357 30 sec; G 328 30 sec; B 258 30 sec; L 753 20 sec (12 hrs 16 min) - Bin2 (I should have used Bin3).  Not a crop other than edges.

 

TOA 130 F7.7 1,000mm.  Ha 127 300sec; OIII 70 300 sec; SII 136 300 sec (26 hrs 20min) - Center crop

 

Edited September 13, 2021 by Rodd

[Clarkey]

Really nice images of one of my favourite targets. Total of 36 hours is about half the years imaging here. Can I borrow your sky please😁

[Rodd]

Here is a Bin3 version.  I like it much better as the full viewing size is more appropriate.