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Old 27-07-2008, 07:41 AM
gregbradley's Avatar
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gregbradley is offline
Join Date: Feb 2006
Location: Sydney
Posts: 16,527

I tried this but perhaps I did the wrong thing near the end when you say select the original image. To do this you click on the background image in the layers box? Or do you alt click on the original image in the layer 1 box?

When I moved the white point doing the first above it made everything brighter the same as if I just opened the image and moved the white point to the left.


Originally Posted by Tandum View Post
Highlight Mask or Brighten DSO. This lets you brighten up a DSO without effecting the sky and stars.

Press Control-J. (Layer via Copy).

Select all of the original image and copy to clipboard.

Layer > Layer Mask > Reveal All. (Create a layer mask).

Alt Click on the new layer mask icon in the layers palette and paste, then invert that layer. Image Adjustments > Invert.

Increase the contrast of that mask with levels or curves. Move the black point to about 64 and the white point to about 220. Experiment with these points.

Apply a small gaussian blur to the mask.

Select the original image and drag the white point to the left in levels to brighten the DSO.

The opacity of the layer may also be adjusted.

Flatten the image when done.
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