Askar M54 Filter Drawer - M54-FD 40 mm Eyepieces 1 mm FIELD STOP DISPLACEMENT

1 mm FIELD STOP DISPLACEMENT TO REFERENCE PLANE +/- 0 mm NUMBER OF LENS ELEMENTS 8 NUMBER OF GROUPS 5 AR-COATING Phantom Coating® Group THREADED FOR FILTERS Yes CAMERA THREAD M43 PARFOCAL EYEPIECES Yes DUSTCAPS 1¼" dustcap (31

Celestron Product Number: 44128

The 3nm Colour Magic Sulfur II narrowband filter is a professional astrophotography tool specifically designed for deep-sky imaging

and observations simple and fun

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 1 mm FIELD STOP DISPLACEMENTUsers 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