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but you don't have to! The famous narrowband Hubble Palette maps SII data to red, Ha data to green, and OIII data to blue)
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stretched each stack to bring out the level of detail you want.registered each stack so that they are the same size, orientation and the stars are in the same positions in each.stacked your subs so that you have a monochrome image from each filter.This tutorial assumes that you have already: Ken's tutorial uses PhotoShop CS3 but I really recommend that you watch his video through as it does a great job of describing the process and some of the theory behind the method. This method pretty much follows the procedure described by Ken Crawford in his Clipping Masks and Color Mapping video tutorial. Method 1 - Assigning and combining each colour using separate layers and layer groups If you have a monochrome CCD and use filters to capture different colour bands and / or narrowband images you will need a method of combining them if you want to end up with a colour image. Post comments and questions here instead ***Ĭombining RGB and / or narrowband to create colour images in PhotoPlus x4 In the Area field, select Selection without background and press Export.*** Please do not comment on this thread. If, however, you want to save the selected image (with transparent background) to work on it later, we can proceed as follows.ġ) Click on the Mask Layer, located below the Layers panel.Ģ) The background layer becomes transparent, leaving out just the selected portion.ģ) Click File > Export and bring up the dialog box. You can do further adjustments on this merged picture as you please. If you want to place the selected image in the different background, proceed as follows.Ģ) Open the image where you want to place it and click Edit > Paste.ģ) The selected image is now placed in a different background.
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Place/Paste the Selected Image in a Different Background Click Apply.įrom here, it is pretty much upto you what you want to do with the selected image. Lastly, increase the adjustment brush to some 100px.ĩ) With the adjustment brush, paint over the edges which need to be refined.ġ0) Now we have a much finer selection. Next, we have Feather which sets the softness/opacity at the edge of the selection. Smooth determines the curvature of the selected area's edge. To achieve a much finer selection, we have to make some adjustments in the Refine Selection dialog box.Ĩ) The Ramp field alters the size of the selection positive values will enlarge it, negative values will shrink it. As can be seen, we have a very coarse selection along the hair. button that appear in the context toolbar.ħ) A red layer overlays the portion outside of the selected area and the Refine Selection dialog box pops up alongside. The selection region increases with each drag as Mode is set to Add by default.ĥ) However, if there is an unwanted spill in selection, change the Mode to Subtract and reduce it.Ħ) Now the edges of the selection can be much finer, especially the hair against the background. and open the image containing the object you want to cut out (you can also press ⌘ + O)ģ) In the Photo Persona (default), pick the Selection Brush Tool.Ĥ) Drag over the object you want to extract and trace out a selection. The process involves using the Selection Brush Tool for selecting/tracing out the object and adjusting the settings from the Refine Selection box to refine its edges.Ģ) Click File > Open.