Quote:
Originally Posted by jase
If your Astronomical IR filter doesnt have a good transmission rate, then you're going to need to increase exposure time to compensate - this *could* partly be the problem why the colours are off with the Astronomical filter.
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Jase,
if I take longer exposures than these, the Amp Glow dominates the image. I did take an image only 30 seconds longer and 3/4 of the image was washed out and lost to Amp Glow.
So, unfortunately I don't have the luxury of longer exposures than 180 seconds, without getting the 'Amp Off' mod done.
Joe, less noise in the IR cut filter image was done by me using PhotoShop actions. I forgot to do the other 2.
To me, the Toucam filter and the IR Cut filter give identical clean stars.
None of the images have been processed to 'nice' level. I usually do quite a bit of processing with them but that would not give a comparison of data collected in this instance. So I left them almost Raw.