Nebula stretching
0 Histogram of the original NEF file

0. The histogram of the original NEF (RAW) file

1 Histogram of the processed NEF file

1. The histogram of the processed NEF (RAW) file

2 Export of the working file-Arbeitskopie

2. Export the working file

3 Export the photo as TIFF 16 bit to avoid data loss

3. Export the photo as TIFF 16 bit to avoid data loss

4 TIF file has been loaded in Photoshop

4. The TIFF file has been loaded in Photoshop

5 Remove vignetting

5. Remove vignetting

6 Combine both level into one level

6. Combine both layers into one layer

7 Duplicate the level

7. Duplicate the Hintergrund layer

8 Select the filter Dust and Scratches

8. Select the filter Dust and Scratches

9 Select Radius 12 and Threshold 120

9. Select Radius 12 and Threshold 120

10 Select Radius 10 and Threshold 80

10. Select Radius 10 and Threshold 80

11 Select Radius 7 and Threshold 40

11. Select Radius 7 and Threshold 40

12 Select Radius 1 and Threshold 5

12. Select Radius 1 and Threshold 5

13 Wipe out the rest bright stars with the clone tool

13. Wipe out the rest bright stars with the clone tool

14 Extreme Tonwertkorrektur

14. Extreme Sctreching

15 Extreme Tonwertkorrektur

15. Extreme stretching in the red channel

16 starless layer on top-Screen mode

16. Put the starless layer on the top- Select Screen mode

17 READY- Unfortunately huge amount of vignetting visible-However nebula is now visible

17. READY - Unfortunately a remarkable amount of vignetting is visible - Anyway the nebula is now visible

NGC6960-Veil Nebula - BEFORE

The image before stretching

NGC6960-Veil Nebula-AFTER

The image after stretching