Hi,
I had a look again at TWIRG and there's a non RAW mod available now and it works very well, its a now RAW Optimised mod and does not affect any camera controls, but it does reduce noise on the images a lot (I can mail you the AVI's if you would like to look at them)..
un-modded picture
(http://www.jumpers4goalposts.org.uk/images/Astronomy/TWIRG/factory_0000.jpg)
TWIRG Modded picture
(http://www.jumpers4goalposts.org.uk/images/Astronomy/TWIRG/twirgnonraw_0000.jpg)
These pictures we're using the same camera the same exposure mode and the same processing. Teh twirg one shows better colout and resolution and also the AVI's had hardly any noise. Apparently vesta and toucam web cams have on-board sharpening this is turned of and enhances the low light capabilities of the cameras, cool eh and it seems to work.
[/img]
The colour balance looks less green but the edges look fuzzier in the lower image. Are those both at original resolution, or have they been scaled by different factors?
Hi, there both the same resolution, the bottom one is less sharp because the mod turns off the on-board sharpening routine.
Right. That'd explain it. Presumably it also means you have a raw image to work with, rather than one that's already been messed with, and as the on-board sharpening is probably a simple 9-point convolution matrix... It's not so much better resolution (that's down to the detector grid's scale) as less noise on the captured image.
yes thats right, I did try it the other night and the avi's had nearly no noise, however focusing was harder, the raw avi we're not too good because clouds kept comming in, so maybe tonight will be better?
I'll post some results soon.
Sounds promising. Look forward to the results to compare them.