btschumy

John, Did you ever get any resolution on this. I've recently started using ASIAir and am trying to process their FITS files. If I just open a .fit file, the image has a distinct greenish cast. If I create an "Astrophotography Stack" with a stack of one, the resulting stack is greyscale with the histograms of R, G, and B being identical. I have not found a quick way to normalize the color. Is there a simple tool or setting to fix this?

Yes, I had tried that previously thinking it would give me an exportable image similar to what I saw. Of course, making the pixel layer via "Merge Visible" also shows the increased noise. However, this is a good way to "preview" what I will get when exporting. Thanks for the suggestion.

To me it makes sense to optimize the image for how it will be viewed. Generally that would be scaled down. I suppose I could change the image size to match what would likely be viewed on a monitor. Then the de-noise amount should match what I see. I will play around with this and see what works best for me. Thanks for the information.

>|<, Thanks for the response. This seems like a pretty big flaw in the implementation. I want to assess how the entire image looks with respect to noise. If I have to zoom into "Actual Size" then it is impossible to do this. The only way I see is to try a noise reduction level and then export the image to see what it looks like. So much for WYSIWYG. I don't recall the image editing programs having this issue but maybe Photoshop does too. I don't normally deal with this level of noise in an image. Bill

I have been trying to process some astro photos in Photo. With the longer exposures needed, noise is a problem. I am stacking 10 images to reduce the noise somewhat. I've also put a Denoise filter over the image to reduce it further. I have the image looking very nice in Photo, but when I export it the noise becomes much worse (intolerable). How can I export something that look what I see onscreen in Photo? I've tried various export options and nothing seems to help. Surely this must be possible.

Is there a way to change the color of the selection outline in Affinity Photo? I am editing a very light gray, low contrast image and can barely see the selection.

I am using Affinity Photo on a Mac for Focus Merging of RAW images shot through a microscope. I do a series of images at different focus points and merge them to increase depth of field. Generally this works very well. But occasionally several images in the stack will be rotated 90º, ruining the merge. If I open the Raw images in the Develop persona, they open rotated there as well. Looking at all the meta information they all seem to have the same orientation. If I open them in Preview on Mac or in the Apple Photos app, they all have the same orientation. I'm mystified why Affinity Photo rotates some of the images making it impossible to stack them. It does seem that the rotated images are an one end or the other of the focus stack. Any thoughts on how to prevent this auto-rotation?