iceman
28-06-2006, 11:25 AM
Hi guys.
Here's the results of last nights first light with the DMK21AF04.
Everything went as expected, which was good. No real dramas though it is extra hassle.. no doubt about it. Even without filters and filter wheels, extra cables for the hub, extra power required for the hub.
The faster frame rate (I was using 15fps) shows up every little wobble much worse than it did at 5fps with the ToUcam. Even just touching the cable causes a wobble.
My chip has dust donuts on it already, which was a pain last night cause I had to try and avoid them. They're big and black and right where you don't want them.
I still can't use 30fps yet - will try my external HD tonight and see if that helps. The new version of IC Capture helped a bit with the preview mode at least.
I'm using the Y800 codec, on Windows it reports it as FIYUV - don't know if that's normal. Have sent an email to TIS to confirm. These images were captured at 15fps for approx 2 minutes (some less). Gain was about 70%, exposure 1/30s.
The smaller image scale I referred to, I think is due to the position of the chip relative to teh body of teh camera.
In the ToUcam, the chip is sunken in the housing a fair way, and the 1.25" adapter is fairly long, and then I also pulled it out of the powermate as far as it would go.
With the DMK, the chip is right at the front of the housing, the 1.25" adapter is shorter, and I didn't pull it out of the Powermate as far.
So it's not really an issue. By the time I add the filter wheel and other adapters, I think the image scale will come out about the same as the ToUcam.
Seeing was only average (around 5), and I've put the colour ToUcam image on as a comparison.
Processing took longer, cause there's more frames to process! Instead of 600 for an avi, I had 1800! That's a pain too :)
Conclusions? Too early to tell. Once I can use 30fps I think it'll be better. On some images I do think I can see some finer detail that isn't present on the ToUcam image. No onion rings or compression artifacts either!
Comments/feedback welcome.
Here's the results of last nights first light with the DMK21AF04.
Everything went as expected, which was good. No real dramas though it is extra hassle.. no doubt about it. Even without filters and filter wheels, extra cables for the hub, extra power required for the hub.
The faster frame rate (I was using 15fps) shows up every little wobble much worse than it did at 5fps with the ToUcam. Even just touching the cable causes a wobble.
My chip has dust donuts on it already, which was a pain last night cause I had to try and avoid them. They're big and black and right where you don't want them.
I still can't use 30fps yet - will try my external HD tonight and see if that helps. The new version of IC Capture helped a bit with the preview mode at least.
I'm using the Y800 codec, on Windows it reports it as FIYUV - don't know if that's normal. Have sent an email to TIS to confirm. These images were captured at 15fps for approx 2 minutes (some less). Gain was about 70%, exposure 1/30s.
The smaller image scale I referred to, I think is due to the position of the chip relative to teh body of teh camera.
In the ToUcam, the chip is sunken in the housing a fair way, and the 1.25" adapter is fairly long, and then I also pulled it out of the powermate as far as it would go.
With the DMK, the chip is right at the front of the housing, the 1.25" adapter is shorter, and I didn't pull it out of the Powermate as far.
So it's not really an issue. By the time I add the filter wheel and other adapters, I think the image scale will come out about the same as the ToUcam.
Seeing was only average (around 5), and I've put the colour ToUcam image on as a comparison.
Processing took longer, cause there's more frames to process! Instead of 600 for an avi, I had 1800! That's a pain too :)
Conclusions? Too early to tell. Once I can use 30fps I think it'll be better. On some images I do think I can see some finer detail that isn't present on the ToUcam image. No onion rings or compression artifacts either!
Comments/feedback welcome.