Dew Heater Bands - (Various Sizes) Telescope Aperture Size:(250 - 271mm) This filter drawer is suitable

This filter drawer is suitable for all 2" filters

The L-eXtreme is a two 7NM narrow bandpass filter which can be used with one-shot color cameras like DSLRs (digital SLR)

Type: Interference filter

periodic errors are measured on mounts and corrected by the user

Non-slip clamps for dovetail clamping

Dew Heater Bands - (Various Sizes) Telescope Aperture Size:(250 - 271mm) This filter drawer is suitableIf the optics fog up, this normally means an early end to what could have been a successful astronomy session and there's nothing more frustrating for an Astronomer or Astrophotographer when this happens on rare crystal clear nights. Heater bands reduce the risk of dew on the lens or on the corrector plate by slightly heating the front lens of your telescope just slightly above the surrounding air temperature which prevents the dew settling on the