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RE: Astronomical equipment #7: Filters
Thanks. In a large telescope the moon is so bright that a single look causes pain. The filter is then very necessary.
Thanks. In a large telescope the moon is so bright that a single look causes pain. The filter is then very necessary.
You mentioned polarizations filter as ND, are there any problems with X artefact (some photo guys hate them)
The filters I described in use for visual observations. There are no artefacts in visual observations. Photographing through a telescope using filters is a more complicated topic.