Blog

Articles on workflow and processing, experiences with equipment, or just general stories related to astronomy or astrophotography.

Photographing Double Stars
Objects, Processing Willem Jan Drijfhout Objects, Processing Willem Jan Drijfhout

Photographing Double Stars

Double stars are among the rarer objects to photograph. Still, it’s fun to try capturing two close stars and have them split by carefully adjusting exposure and processing. In this blog, I show how I photographed three of them.

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Processing Tips & Tricks
Processing, PixInsight Willem Jan Drijfhout Processing, PixInsight Willem Jan Drijfhout

Processing Tips & Tricks

Here you'll find links to advanced PixInsight tips used to create the images on this site. Each link leads to the specific image with a detailed, often step-by-step, explanation of the method. This page serves as a reference to help you find the relevant pages and examples quickly. The list is updated each time new techniques are being described.

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Year in Summary 2024
Astronomy, Processing Willem Jan Drijfhout Astronomy, Processing Willem Jan Drijfhout

Year in Summary 2024

The year 2024 marked a significant change in my astrophotography hobby, by moving one of my setups to a remote hosting facility in Spain. This resulted in an almost 10-fold increase in activity and 39 published images. Check out this blog for the details.

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How bad is oversampling?
Equipment, Processing Willem Jan Drijfhout Equipment, Processing Willem Jan Drijfhout

How bad is oversampling?

My system at the remote observatory is highly over-sampled. How bad is that, and does it make sense to bin the data? This blog will answer those questions, based on a recent image of the Crescent Nebula. This also allowed a comparison with historic and properly sampled data.

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Removing Colour artefacts from OSC images
Processing Willem Jan Drijfhout Processing Willem Jan Drijfhout

Removing Colour artefacts from OSC images

When processing OSC images several colour artefacts keep coming back. In most cases it is not very difficult to remove them in post-processing. In this blog some tips and tricks with examples and workflow on how to remove some of them.

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Six most important improvements in WBPP 2.0
Processing Willem Jan Drijfhout Processing Willem Jan Drijfhout

Six most important improvements in WBPP 2.0

The WeightedBatchPreProcessing script in PixInsight has been an invaluable tool to calibrate frames. The recently released version 2 is a massive update with a lot more customisation options and transparency. Read here about the six biggest improvements.

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Noise Reduction using MMT
Processing Willem Jan Drijfhout Processing Willem Jan Drijfhout

Noise Reduction using MMT

There are many ways to reduce the noise in an image. MultiscaleMedianTransform (MMT) provides a straightforward approach that gives very good results most of the time.

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