Quote:
Originally Posted by Merlin66
Good to see you're getting some results!
I'm still a little surprised with the rapid drop off in camera responce in the UV... for some reason (??!) I though it was much better down there.
I need to go back and re-visit some calibration shots I took with the webcam and Canon350D. I did find significant differences with different lenses ie Canon Std lens v's Zuiko lens.
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I dunno either, Ken. I made an adapter to hold the Staranalyser in front of my 300mm lens on the E510, and when I had a quick play around with it the response in the blue end didn't seem much different to the ToUcam...
I had a play with the needle "slit" solar spectrum, but I came to the conclusion I was too close to the needle. I took the image maybe 2 metres from the needle, and in the viewfinder it looked OK, but in Visual Spec the lines really weren't distinct enough. I guess more distance will reduce the size of the "slit" so as long as my focus is good the resolution should be better.
Al.