Quote:
Originally Posted by Merlin66
Very interesting.
Imaging in "unusual" wavelengths should be encouraged, the information obtained in the UV or NIR is completely different from the "usual" LRGB.
I'm not sure about Don's comments......
In spectroscopy we use a wide range of CCD cameras, SBIG, ATIK, QHY etc and our spectral images cover from 3600A way out to beyond 8000A I've never hear of any issues/ concerns with the CCD chip cover plate coatings.
(Do do have problems with newton ring type resonance bands with some wavelengths/ camera chips)
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Yes I find IR imaging interesting. I've just finished a very interesting book on the history of infrared astronomy. As far as the bright star artefacts are concerned I'm just relating what Don told me. I've only ever noticed this effect with the IR filters. Apparently Don doesn't sell these filters anymore except for the NIR luminance.