New lightbox

[ollypenrice]

I made a new lighbox this week after failing to communicate with Gerd Neumann's website and still feeling sulky about the premature death of my first EL panel from a French outlet.

Without doing a back to back it is hard to say, but I think it is a huge improvement. Usually I have a bit of 'cleaning' to do with OSC images, the odd funny pixel, etc. This time not a single one. That is a first for sure. It seems these are the best flats I've ever had.

I used three 7 Watt energy saver bulbs in 'warm white' and two transulcent perspex diffusers, one a good way from the other so it stands on the ground and you point the scope down at it. Oddly when I used three clear cooker hood bulbs I got no spectrum at all in the blue. Useless!

Olly

[Merlin66]

Hmm

Olly I'm pleasantly surprised you're getting good results with the Fluoro energy saving lamps. I use them extensively for calibrating the spectroscope as there are some significant emission lines.....I would have thought that a quartz halogen or white LED's would be better - they give a continuous spectrum..

Buil has details - 1/2 way down the page....

Spectral calibration

[ollypenrice]

Well, maybe I'm wrong but the result on the first image is posiitive. I can try different bulbs but if it works in pracice I'll stick with it. I do need to try Ha. I really do expect to be messing about for a while with the OSC results which have always contained little oddities sprinkled about. Not this time.

Any other OSC users find defective pixels to deal with?

Olly

[old_eyes]

Do you have a picture and/or some dimensions Olly?

I am trying to visualise what you have done.

old_eyes

[nightvision]

Do you have a picture and/or some dimensions Olly?

I am trying to visualise what you have done.

old_eyes

Yeah me too