Narrowband Bicolor

[prabhakar]

I've captured few hrs of Ha and OIII data (Rosette Nebula) and have stacked the image set using MaximDL.
Now i have two stacked files one for Ha and other OIII.

Can someone tell me how i should go about processing this in startools, can i create synthetic green channel for these two in startools?
Any help will be useful ..

thanks
Prabhakar

[Alvinillo]

LRGB module interpolates missing channels, wich i think is what you want.

I think you will like ti read this about sithetic luminance channel, even if I'm not sure it is useful with missing channels
http://www.startools.org/forum/viewtopic.php?f=7&t=236


Regards

[prabhakar]

Thanks, i read that posting about HA,R,G,B processing.
It's still not clear if i should load Ha as Red channel and OIII as Blue channel and then create green?
Do i also need to create synthetic luminance from RGB ?
How i wish a tutorial exist to explain this first step

[Alvinillo]

In your case I'd load Ha to R and try to load OIII in G or B channel to see what it looks.

[prabhakar]

Sure, i will try and see.
Thanks.

[prabhakar]

Here's the first version of Rosette nebula, this is bicolor 9hrs exposure with Ha(Red) and OIII(Blue) filters over many nights from home last month.
Processing looks bit soft on the edges and not color corrected. I'm trying to create synthetic green to reproduce in hubble palette.
Has anyone tried hubble palette here?

Exposure details
http://www.astrobin.com/134292/0/

Full resolution
http://www.astrobin.com/full/134292/0/

Regards

[prabhakar]

-----------------------------------------------------------
StarTools 1.3.5.289
Tue Nov 04 21:17:48 2014
-----------------------------------------------------------
File loaded [F:\Astro\work\ngc2244\NGC2244_Ha.fit].
File loaded [F:\Astro\work\ngc2244\NGC2244_OIII.fit].
--- LRGB
Parameter [Cap Green] set to [Yes]
Parameter [Channel Interpolation] set to [On]
Parameter [RGB Blur] set to [1.0 pixels]
Parameter [Blue Ratio] set to [1.00]
Parameter [Green File] set to [1.00]
Parameter [Red Ratio] set to [1.00]
--- Auto Develop
Parameter [Ignore Fine Detail <] set to [Off]
Parameter [Outside ROI Influence] set to [15 %]
--- Crop
Parameter [X1] set to [42 pixels]
Parameter [Y1] set to [50 pixels]
Parameter [X2] set to [3227 pixels (-99)]
Parameter [Y2] set to [2504 pixels (-0)]
--- Wipe
Parameter [Mode] set to [Correct Color & Brightness]
Parameter [UNKNOWN] set to [No]
Parameter [Precision] set to [256 x 256 pixels]
Parameter [Dark Anomaly Filter] set to [2 pixels]
Parameter [Drop Off Point] set to [100 %]
Parameter [Corner Aggressiveness] set to [100 %]
Parameter [Aggressiveness] set to [75 %]
--- Wavelet Sharpen
Parameter [Intelligent Enhance] set to [Yes]
Parameter [Scale 1] set to [100 %]
Parameter [Scale 2] set to [100 %]
Parameter [Scale 3] set to [100 %]
Parameter [Scale 4] set to [100 %]
Parameter [Scale 5] set to [100 %]
Parameter [Mask Fuzz] set to [8.0 pixels]
Parameter [Amount] set to [100 %]
Parameter [Small Detail Bias] set to [75 %]
--- Deconvolution
Parameter [Image Type] set to [Deep Space]
Parameter [Mask Behavior] set to [De-ring Mask Gaps, Hide Result]
Parameter [Radius] set to [2.2 pixels]
Parameter [Iterations] set to [6]
Parameter [Regularization] set to [1.00 (optimal noise and detail)]
Parameter [Mask Fuzz] set to [8.0 pixels]
--- Color
Parameter [Cap Green] set to [To Yellow]
Parameter [Bias Slider Mode] set to [Sliders Reduce Color Bias]
Parameter [Style] set to [Artistic, Detail Aware]
Parameter [LRGB Method Emulation] set to [Straight CIELab Luminance Retention]
Parameter [Dark Saturation] set to [2.00]
Parameter [Bright Saturation] set to [Full]
Parameter [Saturation Amount] set to [200 %]
Parameter [Blue Bias Reduce] set to [1.32]
Parameter [Green Bias Reduce] set to [1.00]
Parameter [Red Bias Reduce] set to [1.24]
Parameter [Mask Fuzz] set to [1.0 pixels]
--- Wavelet De-Noise
Parameter [Scale 1] set to [90 %]
Parameter [Scale 2] set to [90 %]
Parameter [Scale 3] set to [90 %]
Parameter [Scale 4] set to [90 %]
Parameter [Scale 5] set to [0 %]
Parameter [Mask Fuzz] set to [1.0 pixels]
Parameter [Scale Correlation] set to [3]
Parameter [Color Detail Loss] set to [12 %]
Parameter [Brightness Detail Loss] set to [12 %]
Parameter [Grain Size] set to [4.5 pixels]
Parameter [Read Noise Compensation] set to [3.85 %]
Parameter [Smoothness] set to [75 %]
File saved [F:\Astro\work\ngc2244\NGC2244_BiColor.tiff].


It looks nebulosity outside the structure is clipped and details inside appear bit soft... Any clues?