Filters for Photometry
Common specifications:
- Durable, anti-reflective coatings on both exterior surfaces over applicable transmission range
- Transmitted wavefront at 633nm (better than 0.25 waves/inch)
- Parallelism <30 arcsec
- Thickness: 4.9 +/-0.05mm, parfocal +/-0.2mm (filters start parfocal +/-0.1mm per recipe)
- These filters are not mounted in rings except by special request.
Upon request, we will mount filters in black anodized aluminum rings, in customer-supplied filter mounts,
or both, typically at no extra charge. Please call or sales [at] chroma [dot] com (subject: Photometry%20Inquiry) (email) for details. - Order by individual part number-size (ex. U-Band Bessel-27). Call for full-set pricing.
