CELESTRON DEW HEATER RING 11" belt kit 5nm Highspeed F/3 filter is

5nm Highspeed F/3 filter is a precision-grade narrowband filter with a high transmission at the H-alpha line at 656

The caps feature knurled rings for easy gripping and are anodized for durability

the 105mm PLUS support rings are equipped with tapped holes (above and below each ring) to allow the attachment of:

The working distance between the flattener and the sensor is generous at 109mm

5 x Light gathering power 86

CELESTRON DEW HEATER RING 11" belt kit 5nm Highspeed F/3 filter isThe Celestron Dew Heater Ring for 11" SCTs is the ideal dew prevention solution for your Celestron telescope. This must have accessory will improve your observing or imaging nights year round. The Dew Heater Ring permanently mounts to your 11" Celestron Schmidt Cassegrain optical tube, replacing your retaining ring so you'll never be caught without it. The installation process is quick and easy (follow the manual for instructions). The Dew Heater Ring