The well-known Fibonacci sequence formed by summing consecutive terms looks like: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89………. And a well known property of this sequence is that if you take the ratio of consecutive terms … Continue reading
Another star reduced version of an oldie. This time it’s the North America/Pelican nebula region of Cygnus taken with the 200mm lenses and the Trius M26C OSC CCDs. This is a 3-frame mosaic.
A reprocess of Mu Cephei.
From 5:39 p.m. tonight – another faint ISS pass – this time due to a blazing Moon directly behind me. You can JUST see the ISS running across the middle of the image.
Tonight’s ISS pass in nautical twilight (too light really to take the image) – but you can just about make it out.
This is an image of the Triangulum Galaxy – Messier 33 – and it has been a little while in the making. This image is a composite of data taken with the Sky90 refractor and M26C OSC CCD, the Hyperstar … Continue reading
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
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
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).
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
