Ultimate Pixinsight Hubble Palette / False Color Processing Tutorial

[@calvincarter5503]

I joined your Patreon and am really happy I did! Thank you for providing all those files to us. That is exactly what I needed. I love the videos. And the videos of others that provide education, tips and tricks for PixInsight. But it's really hard to put it all together when there are so many videos, and PixInsight keeps evolving. But now that I'm on your Patreon, I'm able to use those files to zero in on exactly what I need for what I'm trying to accomplish in Pixinsight. Thank you for putting that together!

[@viewintospace]

Really happy that you like it and that the content has value for you!

[@PaulymanAstro]

Interesting comparisons. Thanks for the shout out. In my workflow I either run the XTerminator series on each channel while linear or like you create a luminance and just apply BlurX to that. With CUDA the XTerminator processes run in less than 20s on each channel so for me it isn’t an issue. I have been experimenting with a test version of my script that does combine the images in the linear state, it stretches the dynamic masks of course though, once stretched using GHS and with some curves and hue adjustments the final result looks pretty similar. Although because I have more creative control over all the stretching with the current version I feel it still has the edge, the stretched masks in the test version are a compromise stretch based on the median values of the input images.

[@billblanshan3021]

Please watch my video again regarding how I use my pixelmath scripts. 1) My SHO Normalization is not meant for linear images, the images must be stretched and should be done on a starless image to protect the stars. 2) my HOO Normalization was not meant to be a SHO knockoff, it simply is HOO processing, otherwise the images would be all green if I were trying to do "SHO"

[@viewintospace]

Hi Bill Thanks for watching and thanks for your input. Simply too many tools around and so yes, yours should be definitely done in non-linear state - will add this to the description. When it comes to stars - from my perspective stars combined in SHO are anyway beyond help, so nothing to "protect" but given your script is used in non-linear state they would anyway already be gone at this stage. Thanks again for all the great work you are doing for the community - highly appreciated!!!!

[@larryfine4719]

Thanks for this - this is a big part of my workflow right now. The game changer is the "Linear Fit", I was getting almost solid blue images before that and just couldn't process them, even with SPCC (another game changer). And of course GHS (another game changer!).

[@viewintospace]

Glad it was helpful!

[@manuelmedinapegram7017]

When executing SPCC, it does not work for me. The message is: ***Error: Database files not available for the Gaia DR3/SP catalog, or the WPSD server is not properly configured. How could I solve this?

[@viewintospace]

By downloading the Gaia DR*/SP data. Have a look here: kzbin.info/www/bejne/a6moaolqhK6ae9k

[@dances_with_drones]

Once you download the Gaia file, open the Gaia process and click on the wrench. Here you tell Gaia where you have saved the files.

[@rayjohnson7437]

Hi Sascha - really enjoyed this video. I noticed when you used SPCC you simply used Optolong R, G and B filters rather than the actual H, S and O filters of the image. I am guessing that this is due to the use of SPCC as a rough colour calibration mechanism, but why not use the narrowband option?

[@viewintospace]

Very good find! I did it wrong, mostly because I only did OSC processing. The correct way would be to select the narrow band option and then enter the frequencies and bandwidth

[@bobbeanbags]

Excellent

[@Lasserubinskov]

Super interesting. So many ways to Rome 😅

[@christopheguigot841]

Ok compris…c’est un projet..merci.

[@galactus012345]

Interesting video. Thank you for the process and some unknown scripts. But you consider the images colors too much in the sense of pure artistic flavors. SHO palette wasn't a taste choice. Our eyes don't have the same accuracy with all RGB colors. Eyes are way more sensitive to green subtles variations. As you all know, the nebula have the strongest signal in Ha. So putting the Ha signal in the green channel simply consist in placing the stongest signal in the green and his extended accuracy. This reveals more details when watching the image. It was a NASA scientist studied choice. This human green sensibility is well known in video industry (YCbCr). I love all images variations, totally respect to consider paletet choice as a pure taste but SHO palette has a true reason. Why do we have green sensibility ? Consider that our primates ancestors were living in the trees and needed to indentify good leaves and fruit in a greenish forest. We still have this eye evolution gift.

[@viewintospace]

That is an amazing input - thank you so much!!!!!

[@Astro_Shed]

A little more respect needed for other peoples work, but apart from that a decent video….

[@viewintospace]

I knew when I read your comment that you were from the UK, and I double-checked it and yes, so it is ;-) As Erin Meyer in her book "The culture map" (can highly recommend it!) states, UK has an indirect feedback culture while Germany and with it also the German part of Switzerland has a direct negative feedback culture. This leads sometimes to misunderstandings and that feedback is misjudged from a point of severity. But yes, got your message ;-)

[@Astro_Shed]

@@viewintospace sorry but you lost me there….😂

[@r.fortner4661]

@@viewintospace what kind of a comment is this? Its extremely myopic to categorize someone's comment based on their geographic foundation. Not very wise or you might receive similar comments from others who might have a negative opinion of German culture!

[@viewintospace]

@@r.fortner4661 As a background - I work in a global pharmaceutical company and I had also for some time a British manager. Germans and people from the UK misunderstand a lot of times or get upset. In the English culture, if someone says "This could be a little bit improved" when he usually means is "This is rubbish, start again". In the German culture, we would say "This is rubbish" which in turn would be extremely offensife in the British culture. So while British people are something perceive Germans as rude, Germans a lot of time so not even realise the negative feedback British people give. Now of both is negative, it is just that we communicate differently. And so when AstroShed asked for a bit more respect, it was because me statement was too direct for him while probable a German or Dutch person would have found this absolutely ok.