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SBIG 1.25" UV+IR Blocking Filter


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Availability: Special Order Temporarily On Backorder - Although this item is temporarily on Backorder, you can order it now and it will ship as soon as it arrives. Your card will only be charged once item is shipped.

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SBIG 1.25 $49.00

About SBIG 1.25"" Baader UV+IR

The Baader UV / IR blocking filter is essentially a luminance filter. It is included with ST-2000XCM color cameras to improve the color balance of the single shot color CCD by blocking the near IR light.

It can be placed behind a camera lens adapter. It is used to block the "out of focus" near IR light that causes stars to look bloated with using a typical 35mm camera lens to shoot wide field images.

SBIG 1.25"" Baader UV+IR Features

  • UV and IR (infrared blocking filter).
  • Optically polished to 1/4 wave and anti-reflection coated.
  • 98% Transmission average across the visible spectrum.
  • Reflects destructive heat radiation!
  • Protects your valuable solar observing equipment such as DAYSTAR filters and the like from excessive heat stress.
  • Stays cool and will not shatter if subjected to great thermal stress, since even intensive radiation is not absorbed - as with ordinary heat protective filters, such as KG-3 or KG-5. Energy is reflected due to an elaborate interference system of 39 dialectric coating layers.
  • Enables pinpoint star images with digital and CCD equipment.
  • Ultrahard and durable Ion-Beam IR Cut coatings, may be cleaned anytime without fear.
  • Hard and absolutely scratch resistant 7-layer multicoat featuring 0.3% residual reflection versus the 4.6% of an uncoated substrate.
  • Freedom from ghost images due to highest quality coatings. Planeoptically polished. Retains full image resolution even at highest magnification during solar observation or eyepiece projection.
  • Larger clear aperture than any competing 1.25" filter.
  • Better, more elaborate filter cell design than any competing filter, featuring a CNC-milled "crown" for ease of handling and attachment.
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