#Sequator photo stacking software software#

I know now that this is a challenging process that requires knowledge and experience in many areas which were new to me. I have learned a lot in the time I have been doing astrophotography.

#Sequator photo stacking software software#

Astrophotography Processing Software I’ve Used.Utilizing a lens profile is also OK, but lens profile is only an approximate model of the lens, can not correct perfectly. Otherwise the vignetting will deteriorate. NOTE : You MUST correct the vignetting(by providing vignetting images) before applying the filter. Sometimes slight light-polluted sky looks more comfortable and natural. This option can be enabled only under uneven filter and if specified the sky region. For example, be careful of the reflection on a lake surface, or objects have similar color. No guarantee to generate a more natural result, please try by yourself. Suitable to suppress the sky glow close to the darker foreground. ' is the acronym of 'Intelligently-Aggressive Analysis.' It analyzes the color tone of light pollution, and try to find polluted foreground regions, reserve more foreground details. The uneven filter is conservative and may leave some sky glow or halo above darker foreground. Both suggest to correct vignetting (by providing vignetting images) before processing, otherwise your may find the vignetting getting worse. The uneven filter is a non-linear filter designed for wide-angle, complex pollution environment. The deep sky pollution filter is a linear filter, suitable and more accurate for telescope lens. You can find the strength adjustment on the left-bottom panel while selecting this option. Assigning sky region can make the pollution analysis more accurate if there is foreground on the image. This option will analyze background signals, suppress them and strengthen the signals we desire. Star light enhancement and light pollution filter will also refer to sky region to be applied correctly. Suggest to enable 'Gradient' or 'Irregular mask' if there is foreground, even for the 'Freeze ground' mode. Trails : no trail composition, keep the base image You don't have to mark precisely into pixels, but only to mark the sky region contain most stars roughly(do NOT touch the foreground). You can use mouse wheel to change the brush size, right button to erase mask. Irregular mask: use brush to mark sky region. Fully composition will be performed above the gradient region. Gradient: besides the boundary line, also assign a parallel zone for gradient composition. Sequator will only detect stars & analyze light pollution above the line. There are 3 options:īoundary line: Of sky, useful for captured with horizon. If there is foreground, specify sky region will help star detection and better alignment accuracy. If you forgot, enable ' unify exposure ' may mitigate potential quality issues. They both assume the exposure parameters MUST NOT change in the star images. 'Select best pixels' & ' Freeze ground' work only if 4 or more images are given.

You can use function to review the alignment result as well. Advanced users who prefer other integration software or develop their own algorithms may need this function. Note that linear images are darker but suitable for further processing. A side-effect is, but some people prefer, the stars will be smaller and sharper.Īlign only : Generate aligned images in linear TIFF format into the output folder.

It will be useful to reject aircrafts or moving noises and, oh, meteors as well. The option ' selective ' will perform 2.0 sigma-clipping average inner the mask. Must specify 'Irregular mask' roughly to the sky part for better stacking quality. Freeze ground works well on wide-angle stacking within 10 min or more. I.e., you should not put the camera on a real EQ mount nor move the tripod. With this option, the foreground in the input images must be fixed. Both the sky and the foreground possess the noise reduction effect by stacking. You may choose this option if there is foreground in your picture and you hope the foreground can be kept sharp. It selects pixels from star images and rejects worse pixels.įreeze ground : detects what are moving and what are stable, and then stack them separately. Select best pixels : implements 3-iteration sigma-clipping average. You can find 4 mode options at the left-bottom if highlight on ' Composition ' mode.Īccumulation : will accumulate star images onto the base image, similar to long-exposure on an EQ mount. Supports star-aligned stacking for clear stars and non-align lighten stacking for star trails.Ĭomputing options for star-aligned stacking