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Originally Posted by WadeH
I have absolutly no idea what half (read most) of those terms mean but WOW! Al, what a great set of images. BTW, what does a UV/IR filter do and is it mostly for imaging?
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A UV/IR filter blocks any UV and IR light from entering the camera. Different wavelengths are refracted at different angles as you know, so they focus at different distances from a lens. So you can get sharper images by focussing a narrower bandwidth of light.
For my scope the only lenses I have to worry about are the corrector plate and the Powermate. Maybe, if I'd used a UV/IR filter the high resolution images could have been sharper...
...but I think the seeing was the major cause of the softness in the images.
Quote:
Originally Posted by WadeH
You definatly know how to fill time.
I particularly like the last three.
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The last three were taken at secondary focus, so being lower resolution (around 1km per pixel instead of about 400m /pixel with the powermate) means the seeing had less of an adverse effect, and also any blurring due to UV and IR light entering the camera was only that due to the corrector plate.
Al.
