Antlia Photometric Sloan Filter Set - 50 mm
Antlia Sloan Photometric GRIZ Filter Set - 50 mm Unmounted
The Sloan Digital Sky Survery (SDSS) photometric system is the most common filter set used by observatories today. The Antlia Photometric Sloan Filter Set includes four filters covering 400nm to the sensitivity limit of silicon CCD cameras near 1100nm. Ion Gun Assisted Deposition coating technology on the double-sided polished substrate makes them the most consistent, durable and accurate filters. Antlia Sloan filters have almost total suppression of optical density (OD)5 for superior contrast.
Sloan Filter Set Highlights:
- Wider transmission windows allow fainter objects to be measured in a shorter time
- Antlia Sloan griz' filter set is suitable for telescopes with focal ratios from f/15 to f/1.8
- Peak transmission guaranteed > 98%（g’＞95%)
- Identical filter thickness to existing standards, with utmost care for parfocality
- Each filter is coated individually, NOT cut out of a larger coatings plate
- 1/4-wave propagated wavefront prior to coating
Technical Specifications:
- Wavelength for G: 400nm - 550nm
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- Wavelength for R: 555nm - 705nm
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- Wavelength for I: 688nm - 850nm
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- Wavelength for Z: >812nm
- Peak Transmission: 98% for RIZ, 95% for G
- Filter Thickness: 3mm+/-0.05mm
- Blocking: +/- OD5
- Filter Size: 50mm Unmounted