Askar M54 Filter Drawer - M54-FD 40 mm Eyepieces Celestron Product Number: 44128

Celestron Product Number: 44128

For shiny or wet surfaces

and observations simple and fun

the CEM40 & GEM45

The key to the etalon’s performance lies in its ability to tune the wavelength it transmits

Askar M54 Filter Drawer - M54-FD 40 mm Eyepieces Celestron Product Number: 44128Users have to follow the certain steps to successfully assembly the Askar filter drawer and put it into the light path to fit the whole optical system: 1. Take out the main body of Askar filter drawer 2. Choose a proper camera adapter according to the thread type of your astronomy camera 3. Fix the camera adapter on the main body with 5 M38 countersink screws and wrench of M2 4. Choose a proper telescope adapter according to the thread type of your