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  Deconvolution

With the deconvolution commands of Astroart it is possible to restore an image corrupted by blur or bad tracking. Some amateur astronomers use this feature to restore also old film photos.


This image is a two minutes exposure of M13 with a TMAX 400 B&W film. The image was not tracked but after the Maximum Entropy deconvolution it is perfectly restored. This image was scanned with a low cost A4 scanner.
 

  Fast rotational gradient

The rotational gradient filter, also known ad Larson-Sekanina, can reveal faint details and jets inside comets.



Thanks to the speed of Astroart, this complex filter takes less than a second on a 512x512 image, using an old 1 Ghz PC.
 

  Gradient removal

This filter can correct almost any kind of uneven level of brightness in your images (usually caused by light pollution)

Remove gradient

In the screen-shot above, at left the original image, and finally the corrected image on the right. The satellite stray was removed with the command "Remove lines".

  Adaptive filters

Astroart contains two unique adaptive filters. The Non-Linear high pass filter improves the sharpness of an image without black rings around stars or other artifacts.


The Adaptive Low pass reduces the noise of an image without blurring and without loosing definition. Try them in the demo version.
 

  Stacking images before filtering

An high pass filter (sharpen filter) should be applied on a picture only if the noise hidden in the image is very low. This is usually false for a single shot of a planet.


On the left a single saturn image after an Unsharp mask filter, the noise become visible.
On the right 20 frames was averaged (and automatically aligned) before filtering.
 

  Preprocessing

The Preprocessing Window with its file boxes filled by simple Drag & drop.

Preprocessing

In a few seconds all the images are corrected for dark frame, flat field, aligned and summed into a single image.

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"Astroart is a great example of how astro software should be planned, coded and documented."
Warren B. Offutt , W & B Observatory. USA

"When science is done properly it is indeed art."
Michael Schwartz , Tenagra Observatories LTD. USA
 
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