AstronomyUkraine Posted December 5, 2020 Share Posted December 5, 2020 In the provided link you can access .xisf, and .tif files of the Lobster Claw nebula to download and play with. The files have been calibrated, registered and stacked. Nothing more has been done to them. There is approx. 7.5 hours of data in the Ha and OIII, and 6 hours in SII. The files will be available for two weeks from today. I'm looking forward to seeing your results, enjoy the files. ?https://1drv.ms/u/s!ArcbfclKs_QAo1cl9j7ATZSOSRIU?e=dyJfYe 1 Quote Link to comment Share on other sites More sharing options...
Carastro Posted December 5, 2020 Share Posted December 5, 2020 Processed in Photoshop.https://cdn.astrobin.com/thumbs/LPTcRz-qrftA_1824x0_O3Qyqi6r.jpg 2 Quote Link to comment Share on other sites More sharing options...
Carastro Posted December 5, 2020 Share Posted December 5, 2020 Can we see your results too.Carole Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted December 5, 2020 Author Share Posted December 5, 2020 Posted by: @Carastro Can we see your results too.Of course Carole. Here is my version. 2 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted December 5, 2020 Author Share Posted December 5, 2020 @Carastro Looks great. I presume you combined in the hubble palette?Brian 1 Quote Link to comment Share on other sites More sharing options...
Carastro Posted December 5, 2020 Share Posted December 5, 2020 Yes I did, but I much prefer your colour. Think I will have another go at it.Carole 1 Quote Link to comment Share on other sites More sharing options...
Bob-c Posted December 5, 2020 Share Posted December 5, 2020 Two lovely processed images from you both.Bob. 1 Quote Link to comment Share on other sites More sharing options...
Gina Posted December 5, 2020 Share Posted December 5, 2020 Posted by: @Carastro Processed in Photoshop.https://cdn.astrobin.com/thumbs/LPTcRz-qrftA_1824x0_O3Qyqi6r.jpg Very nice Carole ? 2 Quote Link to comment Share on other sites More sharing options...
Gina Posted December 5, 2020 Share Posted December 5, 2020 Posted by: @AstronomyUkraine Posted by: @Carastro Can we see your results too.Of course Carole. Here is my version.Very nice too ? 2 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted December 5, 2020 Author Share Posted December 5, 2020 Posted by: @Carastro Yes I did, but I much prefer your colour. Think I will have another go at it.Mine isn't a straight up SHO. I mixed SII and Ha in the red channel, Ha and OIII in the green channel, blue channel was OIII. I don't know if that is possible to do in photoshop, I don't use it for astro images, except to crop and resize.Brian Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted December 5, 2020 Author Share Posted December 5, 2020 Posted by: @Gina Very nice tooThank you Gina. ? 1 Quote Link to comment Share on other sites More sharing options...
Dmack1 Posted December 6, 2020 Share Posted December 6, 2020 Thanks for sharing the data Brian. its always a good learning experience to see someone else's data and and have a chance to work with it. I'm not at all experienced with NB (DLSR and L-eNhance is about it for me) so i've not really been able to do the data justice. i decided to try an HOO type first but blending the S&O into green channel. this gave me - Then I gave SHO a try and got this.They are not brilliant and in particular i've lost much of the fainter nebulosity that yows in both yours and @Carastro 'sbut I'm reasonably satisfied with them at this stage - lots still to learn thanks again David 2 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted December 6, 2020 Author Share Posted December 6, 2020 Posted by: @Dmack1 They are not brilliant and in particular i've lost much of the fainter nebulosity that yows in both yours and @carastro 'sbut I'm reasonably satisfied with them at this stage - lots still to learnThey both look great. Did you use Pixinsight or photoshop? If you use Pixinsight, a good tip to remove the magenta background in the second image, invert the image, then apply SCNR to remove green, then invert back. With magenta being opposite to green on a colour wheel, inverting the image will remove magenta. Just experiment with the strength until you get a neutral background. 1 Quote Link to comment Share on other sites More sharing options...
Dmack1 Posted December 6, 2020 Share Posted December 6, 2020 Posted by: @AstronomyUkraine Posted by: @Dmack1 They are not brilliant and in particular i've lost much of the fainter nebulosity that yows in both yours and @carastro 'sbut I'm reasonably satisfied with them at this stage - lots still to learnThey both look great. Did you use Pixinsight or photoshop? If you use Pixinsight, a good tip to remove the magenta background in the second image, invert the image, then apply SCNR to remove green, then invert back. With magenta being opposite to green on a colour wheel, inverting the image will remove magenta. Just experiment with the strength until you get a neutral background.What a fantastic tip - i use PI. How does this look? Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted December 6, 2020 Author Share Posted December 6, 2020 Posted by: @Dmack1 How does this look?A massive improvement. It shouldn't really be used after you have used curves to get the colour you want, better to use it just after stretching. Another way to remove magenta, is the ColorMask script. Choose the magenta mask, in the mask blur, choose 2 or 3 levels. Apply the mask, and reduce the saturation, and/or add a touch of green in curves. 1 Quote Link to comment Share on other sites More sharing options...
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