Thousand Oaks Astronomical Filters and Dew Heaters

Thousand Oaks Optical has manufactured the most popular white light solar filters in the world for over twenty five years. A white light solar filter allows you to safely observe sunspots or transits of Mercury and Venus using an ordinary astronomical telescope. These filter reject virtually all of the solar energy before it enters your telescope.

Thousand Oaks Optical is also a leading supplier of Nebular filters and telescope dew heaters. We favor the Thousand Oaks digital dew heater controller for its four individually controller output channels and it's protective circuitry that prevents complete discharge of your field battery.

Thousand Oaks Dew Heater Bands

Thousand Oaks Dew Heater Bands. Supplied with 4' power cable and standard RCA connectors. Compatible with both Kendrick and Thousand Oaks Dew Heater Controllers.

From: $25.00

Choose which style of this product to here.

Thousand Oaks Digital Dew Heater Controller

Thousand Oaks Digital dew heater control unit. Each heater output is controlled independently and has a full range of adjustment from 0-100%. This eliminates the problem of overheating or not reaching desired temperature regardless of heater size and comb

$109.00

Thousand Oaks Full Aperture Solar Filters

Thousand Oaks full aperture solar filters allow safe observation of the sun using ordinary telescopes. These white light filters are useful for observing or photographing sun spots. Solar image is yellow-orange. Guaranteed fifteen years.

From: $69.00

Choose which style of this product to here.

Thousand Oaks Nebular Filters

Enhance your deep sky viewing with the latest in multi-layer coating technology. Our filters transmit desired wave-lengths in a very steep slope vs. gentle transition slopes in competitive brands. This means better contrast and overall performance.

From: $89.00

Choose which style of this product to here.

Thousand Oaks Off Axis Solar Filters

Off-axis solar filters are recommended for telescopes with apertures larger than eight inches. The solar image is not darker with reduced aperture as we allow for this in the coating density.

From: $89.00

Choose which style of this product to here.