Halpha Ngc 700

[Ken82]

Completely new to narrowband  imaging but pleased with the result considering im using a modded dslr.  3.5hrs of 8min exposures stacked and processed in pixinsight. I used Tgv denoise and unsharp mask both masked but if anyone could suggest any further processing techniques with pixinsight please advise.

 

[tooth_dr]

Nice images esp from DSLR

[Ken82]

Does multi scale median transform work along with TGV denoise ? What about acdnr and hdr mutliscale ?? Sorry not sure if I’ll over do it. I’ve been trying to adjust things but don’t appear to improve 

[tooth_dr]

2 minutes ago, Ken82 said:

Does multi scale median transform work along with TGV denoise ? What about acdnr and hdr mutliscale ?? Sorry not sure if I’ll over do it. I’ve been trying to adjust things but don’t appear to improve 

Sorry I have never used PI!

[david_taurus83]

10 hours ago, Ken82 said:

Does multi scale median transform work along with TGV denoise ? What about acdnr and hdr mutliscale ?? Sorry not sure if I’ll over do it. I’ve been trying to adjust things but don’t appear to improve 

I have the book and it takes you through each process. Perhaps using them all is over doing it. I find TGV denoise is quite good. I use these settings below and they smooth things out nicely. It's best to create a small preview and applying to that. It works faster and if you right click after you can undo and redo to see any changes.

[Guest]

I found MultiscaleLinearTranform to be really useful - here's my cheat sheet for using it...hope it helps ?

1)       MulitscaleLinearTransform (noise reduction – note this tool was designed to be used before stretching)

b)       Create a mask

i)         Duplicate the image

ii)       Open STF and HistogramTransformation and apply a permanent stretch to the duplicate to make it non-linear.

c)       Apply the mask to the h channel (INVERT it)

d)       Open MultiscaleLinearTransform and set channels as follows

i)         1 = 3; 0.5; 3

ii)       2 = 2; 0.5; 2

iii)      3 = 1; 0.5; 2

iv)      4 = 0.5; 0.5; 1

e)       Apply, and then use the same mask above to apply nr to other two channels.

f)        Works equally well with linear and non-linear images.

g)       Good to do it in linear stage (as in this first step)

h)       Replacement for AWTV

[wornish]

Excellent image.  Very nice stars for a DSLR.