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Celestron Rasa 11" Light Pollution Imaging Filter

SKU: 93617

Celestron Rasa 11" Light Pollution Imaging Filter
Celestron Rasa 11" Light Pollution Imaging Filter
Celestron Rasa 11" Light Pollution Imaging Filter
Celestron Rasa 11" Light Pollution Imaging Filter

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About this product

Remove Light Pollution While Keeping Your Images Bright
Light pollution limits how much of the night sky we can see and photograph. When imaging with a colour camera in light polluted areas, skyglow degrades image quality. Light pollution filters help to selectively block light emitted from common streetlights and other ambient lighting. But most light pollution filters greatly compromise the total light throughput, causing dim images and negatively impact the colour balance, causing images to appear too green or blue.


Light Pollution Filter Manual


Get the most out of your Celestron Rowe-Ackermann Schmidt Astrograph 11, even under light-polluted skies, with this Light Pollution Imaging Filter, custom-designed for the RASA. No matter which camera you use, this filter’s generous 68 mm clear aperture allows it to easily accommodate today’s largest sensors. Utilizing a machined aluminium housing and Schott B270 glass, the filter replaces the RASA’s clear optical window so the RASA’s optical performance is unaltered.


The Light Pollution Imaging Filter for RASA “surgically” removes unwanted light pollution while preserving as much of the useful spectrum as possible. That means you’ll still retain over 90 percent of the light captured by your telescope at many wavelengths.

Unlike other light pollution suppression filters, the Celestron LP Imaging Filter for RASA maintains a relatively neutral colour balance so you can bring out subtle colour in galaxies and other faint deep sky objects. Multiple layers of specially-formulated dielectric coatings provide the desired transmission, while anti-reflective coatings minimize star halos and internal reflections.

Also included is a clear plastic case to protect the filter when not in use

Individually Tested for Quality
Every Celestron Light Pollution Imaging Filter is tested individually for light transmission. Inside the box, you’ll receive a graph detailing the actual transmission spectrum for your specific filter.


Glass thickness: 2.1mm (0.08")
Filter diameter: 72mm (2.83")
Clear aperture: 68mm (2.67")
Coatings: Hard Coated dielectric and multi-layer antireflection coatings
Filter glass: Schott B270
Housing: Anodized aluminium

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