I made the head amp as close as possible to the original NBTV handbook schematic, problem was the transistors are not ones easily available from your local Jaycar store so I looked for what I think would be suitable substitutes, so for the BC109C I substituted a BC549, the BC212 I substituted a 2N3645 and the 2N3704s I substituted BC238Bs, going by the data given in
www.alltransistors.com most of the specs were within close proximity to the original transistors of the schematic but had lower forward current transfer ratio, would lower hFE inhibit the performance of the head amp???
One thing I noticed with the dome sensor is it is very sensitive to the point my 150W lamp was shining too much light on the subjects I filmed so the subjects did look to be overbloomed and silhouettish but have to say too much of the test subjects were of silhouette pictures. I found there was some variable shading when I stuck my hand in front of the lens at a further distance away from the 150W lamp. Also I found that when I had the lamp not directly pointing to the subject to be filmed I get better shading from it. Also another factor is my Panasonic RX3 camera being very sensitive to low light does intensify the lighting from the monitor whilst the monitor produces a dim amber picture to the naked eye. And in post production I did upped the brightness and contrast to make the pictures more viewable, the first couple of clips I did put too much contrast but the rest I adjusted contrast to a suitable level below clipping. And finally the holes are drilled to 1mm which does lessen the finer detail in the picture as well opposed to drilling with a needle of half the diameter or less.
Anyhow now that the camera is working and making usable pictures I will have to start making refinements, lock the lenses in place and drill another record disc as I did a bit of a bodgy job drilling the one I am currently using.
I have now uploaded a bunch of 20 second video clips of the camera telerecordings in a zip file to DepositFiles, here is the link to download
http://depositfiles.com/files/k1f2d2hqc it's about 475mb in size.
Also here are a couple more 5 second snippets: