Astronomik UHC Filter – This filter was designed for the visual observation of emission and planetary nebulae but also works very well for imaging these objects, as a dual type filter, if used with an IR block. The IR block can be either inbuilt, as with a DSLR, or in combination. The Astronomik L3 type luminance filter gives particularly good results. Price includes delivery.
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The Astronomik OIII Visual Filter is mainly for observing planetary nebulae, it’s unsuitable for use with CCD cameras except in combination with an additional IR block filter.
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This product has multiple variants. The options may be chosen on the product page
Astronomik UHC-E Filter – This filter was designed for the visual observation of emission and planetary nebulae with (mainly) smaller scopes, but also works well for imaging these objects if used with an IR block. The IR block can be inbuilt, as with a DSLR, or in combination. The Astronomik L3 type luminance filter gives particularly good results and colour balance. Price includes delivery.
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This product has multiple variants. The options may be chosen on the product page