SBIG 1.25" UV+IR Blocking Filter
What's Included With This Item:
- SBIG 1.25" Baader UV+IR Blocking Filter
- SBIG Warranty
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.