NGC 6888 - The Crescent- An Image Processing Strategy & Approach you can use!
ฝัง
- เผยแพร่เมื่อ 1 ธ.ค. 2024
- Another Cosgrove's Cosmos Imaging Project!
A full posting covering the story behind this image, as well as a detailed image processing walkthrough, can be found here:
cosgrovescosmo...
In this video, I am experimenting with a new way of sharing the image processing strategies employed with this project. While the web post has the fine details of the image processing done - this video provides a high-level overview of the entire approach. It follows the images as they evolve from mono linear master images through the linear, nonlinear phase and the starless phases of processing to the final color image.
NOTE: I discovered too late that the video sections at the beginning and end (where ever you see my face!) have some kind of reverb distortion going on. It is not too bad, but it is noticeable - the majority of the video is fine. My apoligies for not catching this sooner!apologies
NGC 6888 is an emission nebula associated with the Wolf-Rayet Star WR136 and is located in the constellation of Cygnus.
This image was taken on my Astro-Physics 130mm f/8.35 EDT APO telescope platform, which uses the next generation ZWO ASI2600MM-Pro camera and is supported by an IOptron CEM60 Mount.
12.9 hours of narrowband data were collected over a period of four nights ending on September 2nd.
The image was processed by using a Synthetic computed Luminance image and extensive use of starless processing workflows. The final image is rendered using the Hubble SHO palette.
FEEDBACK REQUESTED! As I said - this video is a bit of an experiment - I would very much appreciate your feedback on whether this approach is helpful or not. What did you like about it? What could be improved!
Thanks in advance!
Please consider supporting my fledging TH-cam Channel by Subscribing and ringing the bell!
Thank you for the tutorial...my version came out really good compared to what I did a couple of years ago. Clear skies!!!
So glad to hear that you found this useful!
Thank you very much, it is always very helpful to follow in detail the individual steps of another person's workflow. Especially if he is as good and precise as you are. I learned a few more things today that I need to try to apply. CS.
Glad it was helpful! Thanks for taking the time to leave the feedback!
Thank you very much for this very interresting video. Your explications are very clear and the detail on you site is amazing!
Thank you for your kind words! I really appreciate the feedback!
Excellent tutorial !!
👍🏾👏🏾👏🏾👏🏾👏🏾
Thank you so much! Glad you found it useful!
This was excellent. I got lost a couple of times...that's on me, but this was very helpful in process development instead of the typical "click this and enter this".
Thanks much! BTW - Most of my imaging projects on my website have full, detailed, and annotated process walkthroughs if you think that might be helpful to you.
Wow! What an image. Excellent tutorial on PixInSight process. Subscribed 😊.
Thank you! Hope the processing walkthru was helpful!
Thank you for the tutorial!
Glad it was helpful!
I loved the final results and and content of the video. There are many processing videos for absolute beginners. But for intermidiet users of pixinsight like me dont need to know or see how each tools looks like and what all settings needs to be done or all the parameters being set. Most of the videos for beginners are made in haste and those videos are not concentrated on best results possible because of time limit. Such videos really give us ideas and approaches, experts like you take on certain issues of your image. Every one's image can have different problems but such approaches give us idea which tool to use or how certain tool cam be used to fix certain issues. Thank you for making this video and excellent image. Clear skies!
Thank you so much for your thoughtful feedback - it is very much appreciated. My approach to the detailed walkthrough on my website was to lay it all out. That way, a beginner would see the steps, and a more experienced person would just skim and stop where they found something interesting. But with the video, I want to talk at a higher level. The thing I think could have done better is talking about WHY I set up the processing flow the way I did. I will do better on future videos! Thanks again!
@@cosgrovescosmos Yes, After watching this video I also went through your website and processing walk through. It is Indeed very well drafted with all the details and screenshots and Images. I have bookmarked this page for reference. 😃. Once again very well done and Thank you.
Thanks for checking out the web site!
Great work
Thank you
Very useful for me, particularly the masking. Gives me food for thought to go back and reprocess my NGC6888. Thank you.
Great to hear!
I wish you made a video for one shot camera process through astap grexpert Siril Ps
I mostly make videos about the tools and methods I personally use, and since I don't use some of the suggested tools, it is unlikely that I will get to that. Thank you for the suggestion. I may add an OSC to the mix at some point, so you may see that come along.
Very informative.Thank You to put such an effort. Just one question: Using PCC, what was the white reference? "Average spiral Galaxy?
Thank you! And yes - you are correct. I have gone in and changed it in the past between nebula and galaxy, and while there are changes - they are not huge. I have gotten into the (probably bad) habit of leaving it on Average Spiral Galaxy.
Is there green in this image? Did you try it with high FL scope?
Well - yes and no. The main image was a narrowband shot with just the Ha and O3 filters, mapped to the HOO space, meaning that the O3 signal was mapped to both G and B channels (thus the 'no'). But then I did some normal RGB shots to get the star images - these captured the green channel as well as the R and B (thus the 'yes"). So I then folded the RGB stars into the HOO starless nebula image to get this result. This was shot with my Astro-Physics 130mm f/8.35 system which has a focal length of 1085mm - and is the longest focal length I have. Full details and processing steps can be seen:
cosgrovescosmos.com/projects/ngc6888-2022
Thanks,
Pat