Category Archives: Writing

6-Minute Space Station Pass 02/12/2o22

It’s been a loooong time for one of these – so I’ve got a bit out of practice. But this was tonight’s Space Station pass at 5:37 p.m. I got part of a nice long 6-minute pass and you see … Continue reading

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Structural Colour in the Living World

Insects can inspire those researching into advanced optical devices. This is a Morpho Rhetenor butterfly – and that intense blue metallic-looking colour is due to the structure of the butterfly’s wing scales. Each scale acts like a tiny photonic crystal … Continue reading

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Star Reduced California Nebula

Star reduction does a nice job on the California nebula – image taken using 3 x Sky90s and 3 x M26C OSC CCDs (non-Trius). About 16-hours of 15-minute subs (I think without looking it up).

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The Whole of Delphinus

Managed to find a gap in the clouds last night to grab this image of Delphinus taken with the 200mm lenses and the 2600MC Pro CMOS OSC cameras. This was 28 x 10-minute subs and the last hour of data … Continue reading

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Composite IC410/IC405 using Sky90 and 200mm lens data

This is a composite image of the IC410/IC405 region using Sky90 data (34 x 20-minutes) and 200mm lens data (76 x 15-minutes). A pretty mediocre looking image seeing as there’s 29-hours worth of data in there.

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Star reduced IC410/IC405

My free trial of Russ Croman’s StarXTerminator ran out, so I just bought the full licence. In celebration I ran it on an old Sky90/SX M26C image of IC410/IC405 which was 34 subs at 20-minutes per sub. In this version … Continue reading

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And here’s a bunch more star reduced images

 

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Star Reduced Cygnus Wall

The star reduction process applied to the Cygnus Wall.

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A Less Busy M31 – Andromeda Galaxy

Russ Croman’s StarXterminator can be used to create a separate “stars only” layer in Photoshop. You can then process the stars only layer to greatly reduce the impact of the stars, and then reintroduce this layer back into the original … Continue reading

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A Couple of Additional Tweaks

A couple of tiny additions cleans it all up very nicely. A quick run of the Photoshop “despeckle” tool works absolute wonders (top image) and the last couple of stragglers are removed using the “Spot healing brush” tool in Photoshop … Continue reading

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