Hydrogen Sky above Arecibo, take 2

I realised that the first time I posted this, the hydrogen was only spanning about half the area of the sky that it should have been. Here's the correct version. And the relevant blog post for those who missed it is here.

Experimenting with anaglyphs : NGC 628 hydrogen data

Red-blue 3D glasses required, part two. The hydrogen content of NGC 628. The third axis is velocity, not distance - in reality the gas disc has about the same proportions of a DVD. But it looks more interesting in this view. :)

Experimenting with anaglyphs : the Virgo cluster

Red-blue 3D glasses required for viewing. This is for use in a seminar in a couple of weeks. It's a schematic rendering of the Virgo cluster. The 3D effect works better than I expected, it's definitely better as an animation rather than a still.

The next challenge will be to produce one of an HI data cube, which is quite a lot more complicated. Hence I'm starting early and everything else is on hold (again).

The lonely little smurf

My third paper accepted !

It's about an isolated blue dwarf galaxy. Why the hell didn't I call it AGES VIII : The Lonely Little Smurf ?

A slightly worrying thought occurs that when paper VII is accepted I'll have written half of all the AGES papers...

Placeholder post intended to be replaced with a better summary.

http://arxiv.org/abs/1404.2101

Time series in FRELLED

Playing around with adding time series animation capabilities to FRELLED, my Blender-based FITS viewer (http://www.rhysy.net/frelled-1.html). This is a simulation of a star-forming cloud. I really don't know any of the details of the simulation; at this stage my interest is purely visual.

There are only 29 frames, but this required rendering 7,424 images. FRELLED renders everything in 3D by slicing the FITS file. In this case the simulation is a cube 128 elements on a side. Since the viewpoint is fixed, it only needs to slice the cube in one direction, but that's still 128x29 images. This has to be doubled to generate separate transparency and colour maps. Actually the rendering time wasn't too bad, maybe half an hour.

If I rendered the viewpoint rotating around all three axes of the cubes for 100 frames, that would mean rendering 76,800 images. That would be nearly an hour of footage if they were compiled into a simple frame-by-frame animation. :)