SLOAN/SDSS u'-Filter 2" – photometric

SLOAN/SDSS u'-Filter 2" – photometric

• 2" x 2 mm Baader SLOAN-u' Bandpass Filter, suitable from f/15 to f/1.8 – with 2" (M48) filter thread
• SLOAN/SDSS (ugriz’) photometric filter with transmission according to SLOAN-specification
• Manufactured with most advanced ion beam coating technology / Daylight-Proof
• Reflex-Blocker™ hard coated and planeoptically polished – with sealed coating edges (Life-Coat™)
• Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim
• Equally suitable for modern CMOS cameras as well as for older CCD camera technologies
• Mounted in Baader Ultra Low Profile (ULP) filter cell – 5,5 mm height

This new generation of Baader Filters features:

• Reflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics
• Identical filter thickness to existing standards, with utmost care for parfocality
• Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter
• Each filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed, read more)
• Life-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment