Eagle Image stacker

Almuatasim Salim

About this app

This app is for both photographers and astronomers, and is designed to reduce the noise in the images generated by the camera's sensor.

This app supports both normal images stacking and astro-images stacking, and also supports auto alignment.
Normal stacking mode is useful when you want to stack normal images like mountains images, daylight images, dark situations images, fixed landscapes, and etc…
Astro-stacking mode is useful when you want to stack deep space objects like the Milky Way, Orion, horsehead nebula, and etc.

The app supports most image formats including RAW formats like DNG, ARW, CR2, JPG, PNG.
Also supports saving the final stacked image in TIFF(16-bit) or JPG or PNG.
Before processing in astro stacking mode you can drag the threshold to select the amount of stars which will be detected while processing.
The app reduces the noise by applying algorithms which merge the pixel’s values together.

Ratings and reviews

Very good UI and amazing performance. Adding brightest, lightest, darkest, median options alongside the current average, for normal pictures would be very helpful for stop motion projects, timelapse projects and usual denoising for stacked images. Another huge improvement would be an option to crop the image down to the innermost frame that has all pictures' contribution. In normal mode currently the sides are greyed and faded but automatic cropping works better than manual.

App is constantly crashing. If it even lets you get as far pressing stack.. Most times, the app will crash when just trying to choose photos. This is especially true with added calibration frames. Seems like some days are worse than others. I've had very few end results that even looked like a stacked photo. A couple of my attempts have been with almost perfect centering, but you can still tell the photos were shifted to make the alignment. Leaving horrible streaks or gradient like lines.

There should be support for a smaller amount of stars per image that are brighter/bigger. I have many of photos of close up subjects that are UNABLE to be stacked because "Stars are not good." it works only when it wants to and it is very limiting. even for a mobile app I think there should some more improvements. I:E, Even if stars aren't good, the image should still export. There should ALSO BE a manual mode. Manual Alignment while also having the stacking algorithm. this is very frustrating.

What’s new

v5.1.2:
- Fix app crash when detecting stars
v5.1.1:
- Fix frames rejection when using calibration frames
- Fix the rejection of tif/tiff formats
v 5.1.0:
- Added support for DNG version 1.7.
- So this update fixes the rejection of most modern dng images produced by modern smartphones such as Samsung s24 and s25 or any phone produces modern Raw v1.7 DNG's images.