After modifying the Ps3 Eye camera for usage with a telescope, I wanted to compare it with other astro cameras.
In order to do a comparison I pointed my telescope to the moon with the following cameras:
- Microsoft Lifecam Cinema
- ALCCD5 B/W
- PS3 Eye
- Canon S95
- Canon 20d
I used my Orion 80ED and imaged the lunar disc which was low at 30-35 degrees.
For the Canon S95 camera I used a meade 26mm super plossl eyepiece for projection.
Capture and Processing
For the PS3 eye and Microsoft lifecam I used k3ccdtools to capture the video and processed the video exclusively in registax 6. For the canon 20d, I used backyard EOS and converted the raw files to bmp with IRIS. Finally the bmp files were processed in registax. For the canon S95, I converted the MOV video to an avi with Canon ZoomBrowser and processed the avi in registax. For the PS3 Eye camera, I combined 2 pictures in a small mosaic.
On all cases I did some wavelet sharpening and levels with registax and converted the files to jpg with GIMP.
below are the final processed images with some comments.
I also experimented with the Canon S95 using a baader adapter with a meade 4000 SP 26mm eyepiece. The result is OK, but it is a hassle converting the MOV video to an avi in order to be readable by registax. It will be interesting to try again at some point with a larger focal length.
I also wanted to try my canon 20d. I captured 39 frames and processed them in registax. The result is very good. Although it is not practical and I will likely not do it again, I like the final image very much.
Overall, I am somewhat disappointed with the Lifecam cinema. In its native resolution (1280×720) it does not seem to be usable. This is likely due to the compression. I also get some noise which is translated to false color on the sides which is likely due to the very bright led near the sensor which I have not shielded very well. Overall I do not find the camera to be something special. It seems to perform better on planets, but its drawbacks are obvious on lunar imaging.
The ALCCD5 performs very well and I use it very often. Its only drawback is that it has a rolling shutter but this does not seem to cause any problems whatsoever. Overall it is a very good value-for-money camera.
Finally the PS3 Eye camera. The result is good. Nothing special, but considering that these cameras are available at a very low cost, it is definitively above my expectations. I could not directly compare it with a philips toucam but I have the feeling it is better. I will also try it on planets in the near future.