Recent Articles in LRGB and RGB

Numerous requests have come in for a video demonstration of widefield image processing. In this example the very faint nebulosity around Eta Draconis is the subject to satisfy this request. This is a two frame mosaic that will require good gradient control within the individual frames as well as between the frames of the mosaic.  

This section highlights a contrast enhancement using LocalHistogramEqualization. Simple masks are used to make certain an appropriate amount of enhancement is applied in bright areas of the galaxy.

DBE and PCC are applied to the color combined (single) image. A small bit of commentary is offered as to why Adam (now) uses DBE before PCC. Application of DBE proceeds normally. However, a subtle error results in a failure with PCC. The solution to the issue is the reason you are a member of this Horizon's content!

The goal of the earlier configuration in WBPP was to be able to register the binned color data and integrate it before aligning it with the Luminance. This permits the use of MureDenoise as demonstrated. Then the color channels are aligned and upsampled with the Luminance. Initially there is an error with alignment- a common mistake that is demonstrated...and you should know about!

In this section NormalizeScaleGradient is used to properly weight the color channels. A quick peek at what would have otherwise been the answer is demonstrated for the green channel.

In this second part of the Deconvolution deep dive with NGC 3614- we use another algorithm outside of PixInsight as a sanity check that our new improved answer is sensible. 

In this lesson Adam dives into deconvolution by illustrating acceptable and unacceptable results. You will quickly learn what to look for and how to optimize deconvolution in your own images by watching this section. This kind of lesson represents one of the big benefits of PixInsight Horizons content!

In this section we use MUREDenoise and Dynamic Background Extraction on the luminance image.

 In this section we combine the luminance and take stock of the results and what is to follow.

This is the first video to highlight NormalizeScaleGradient in a processing session! The measured results are wonderful to see. 

In this section we configure the latest version of WBPP to handle this multi-night data set. A clever way to output registered data is demonstrated.

This session processes a data set on NGC 3614 including the discovery of tidal stellar streams.

In this final section a little more noise reduction and some color de-saturation are applied to the image. Look for the final version to be published at AdamBlockPhotos.com .

In this post processing session the HII regions are enhanced by adding a bit of contrast to the Red channel and small structures are also made a little more distinct with MultiMedianTransformation.

Here it is... the blending of the Luminance with the RGB data using LRGB Combination. This is a critical reveal for which success is measured by the sum of all the prior decisions... 

In this section the RGB data is permanently stretched. It is important to monitor the overall brightness and contrast of this image so that it blends with the Luminance data well. In addition it is equally important to remove noise in the color image. This is an area not to be too shy about- the detail comes from the luminance not the chrominance. 

In this lesson we take some creative steps towards enhancing the luminance with HDRMT (using multiple versions). Will the Luminance still end up being too bright? The drama... the suspense! 

PSFImage script is used to generate the synthetic PSF (instead of the standard Dynamic PSF process). It is fun to use. Then with a local support image and a mask the deconvolution is applied.