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Thread: Photography Filters for Telescopes?

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    Default Photography Filters for Telescopes?

    I have many 49mm filters from when I did general photography and was wondering if there is any benefit in using them with our scopes. I have color and contrast filters. My 2" ES lenses are 48mm so would have to get an adapter.
    But has anyone used old photo filters?

    I just realized that I don't think it's do-able since my 49mm filters will not fit through the EP opening. Off by 1mm.
    Last edited by My 2 Stars; 01-12-2016 at 03:39 PM.
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    Default Re: Photography Filters for Telescopes?

    Hello John

    the photographic color filters with the multicoatings (MC) are due to their quality preferable for the telescopes, especially in comparison with the 'filter kits'.

    The photographic contrast filters, like the bluehancer, and eventually the redhancer, are more aggressive than the astronomy Neodymium filters, like the Moon and SkyGlow. They efficiently dim the Sodium/Natrium doublet in the light pollution, but they also dim the OIII and H-Beta nebular emission lines down to about 90%.
    These filters enhance the color contrast in the open clusters with the orange/red giant stars, and they can be also triedon some bright galaxies.

    The best way, before you start to mount these photo filters into the 2" is to try out placing them on the eye lens of the eyepiece. Herewith you can see, how it works for you.


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