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IDAS RGB Type 4 Filters

IDAS RGB Type 4 Filters

  • Vendor
    Skygaze Optics
    Sale price
    Regular price
    Unit price


    IDAS is re-entering into the monochrome camera market, but with the different approach from any others.

    Type 4 RGB filters are the double-passband concept which intentionally doesn’t block NIR.  Each RGB filter passes in VIS and NIR respectively.  Thanks for the IDAS-proprietary multi-bandpass technology. The basic concept for Type 4 full passband is to seek for the better S/N at a given exposure time for the galaxies.


    This also allows to enjoy VIS and/or NIR color separately with an extra filter. Generally targets are the galaxies and the planets. This is how.

    Note R and B crossovers around 370-450nm range. This is intended to reproduce the real purple color based on the wavelength.


    At beginning, following 4 sets are available.

    RGB4C-52 (52mm mounted RGB Type 4 + Clear) : $499.00

    RGB4C-36 (36mm unmounted RGB Type 4 + Clear) : $450.00

    RGB4C-31 (31mm unmounted RGB Type 4 + Clear) : $399.00

    RGB4L-28.6 (1.25″ mounted RGB Type 4 + L) : $299.00

    R700 may be replaced with B+W 092 or Hoya(Kenko) R72.

    We work very hard to ensure that we offer the absolute best prices online.  If you find another online store that offers a lower price then us within six months of your purchase date please let us know and we will refund your original payment for the difference.  We want you to feel confident that you are getting the absolute best price for the product you are ordering.  If you find that our own website has a lower price for the same item you have ordered within six months of your purchase date will refund the difference as well.

    To request your partial refund simply e-mail us a link to the same product on our website, or on our competitors website within six months from the date of your order and we will process the credit accordingly.

    Our 100% Price Guarantee has some limitations:

    • You must purchase the item from our website before requesting your Price Match Guarantee
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