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Category Archives: Articles
Happy 90th Birthday Sir Arthur C Clarke
HAPPY 90th BIRTHDAY SIR ARTHUR C CLARKE!!!!!!! Have a great day, and a great year to come 🙂 Greg and Noel.
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GigaPixel Images
Two weeks ago I bought a Canon 40D DSLR camera for terrestrial work. While playing with this beast it struck me that by using the same mosaic techniques that we use in creating big deep-sky panoramas – we could actually … Continue reading
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Photoshop CS3 Upgrade
At 8.00 a.m. this morning an upgrade to Photoshop CS3 arrived. Within half an hour I was creating mosaics from frames that Photoshop CS2 simply couldn’t handle. The image below is a 15-framer, stitched together perfectly by CS3. This upgrade … Continue reading
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The Totally Amazing Hyperstar Concept
When I originally bought the Celestron Nexstar 11 GPS Schmidt-Cassegrain reflector way back in April-May 2002, I did so because it could use the highly innovative Hyperstar lens, and at that time there was no Meade equivalent. The Hyperstar is … Continue reading
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Using Astro-Imaging Techniques with Terrestrial Photos
I thought I’d talk about techniques and show how some of the techniques used to create our deep-sky astroimages can be used in terrestrial photography as well. For example, the two images of North Weirs in the New Forest (just … Continue reading
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How does a mirror work?
Attempting to explain the operation of the simplest optical device known to man, was the practical demonstration in my Inaugural Lecture at the University of Southampton, which took place on May 18th 2005. The “Eureka” moment as the mirror’s ability … Continue reading
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Do we live in a Matrix Universe?
The film “The Matrix” strikes a deep resonance with many people, so deep in fact that even respected scientists’ have asked the question, “Do we live in a Matrix Universe?” For those of you that haven’t seen the film, the … Continue reading
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What exactly is a Light Year?
At the recent Starscape Exhibitions a common question was “how far away are these deep-sky objects?”. I gave a rough answer in terms of Light Years, and the questioner would walk away satisfied, but it was clear that they really … Continue reading
An introduction to narrowband Filters
In a few of my posts about imaging you will see me mention “narrowband data” and words like “OIII” and “H-alpha”. Well, this is to do with narrowband light filters and line emission sources of light [as opposed to broadband emitters]. For … Continue reading
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Sir Arthur C Clarke’s Tribute to Sir Patrick Moore’s “The Sky at Night”
We are incredibly proud that we have been given permission by Sir Arthur C Clarke to publish his tribute to both the BBC television programme The Sky at Night and to Sir Patrick Moore. If you do nothing else today – … Continue reading
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