Klaas Robers wrote:Could it be possible that the external lighting, that scatters into the light path, is modulated with the mains frequency? This is not synchronised to your scanning. An open lightpath gives you a lot of unexpected results, that have nothing to do with the functioning of the system when closed. So close it and make yourself some simple test slides. Then experiment only in this set up.
Hello klaas
I have already some simple slides ,they came up very faint i could just see them with the eye but light noise didn't help ...the transformer does worry me if it is picking up the mains frequency i am very close to the transformer so very possible ...it could be the case it might very well effect the PMT as well but more than likely the CRT .
The good thing about this side of it i can remove it from the problem area and test out side the case if you think the transformer is the cause ..
I think i will get a shoe box or just a box and test it a little away for the case cutting out that problem and take your advice and trying it in the dark .. should work out whats up then .
That will be later this week any case i know the CRT side of it works the pmt works ,i did hope to get some better results first day but not to be this project is making me work for the wanted results .
The electromagnetic spectrum has no theoretical limit at either end. If all the mass/energy in the Universe is considered a 'limit', then that would be the only real theoretical limit to the maximum frequency attainable.