65PHQ Parameters | ||
Aperture size | 65mm | |
Focal length | 416mm | |
Focal ratio | f/6.4 | |
Objective lens | Quintuplet air-spaced APO (including two ED glasses) | |
Image circle | 44mm | |
Maximum accessory connection (with the focuser fully retreated)： | Imaging mode 85mm（from the base of M48×0.75 male thread） 114mm（from the base of M54×0.75 male thread） 139mm（from the base of M68×1 male thread） | Observing mode 121mm（from the end of 2" eyepiece holder） |
Total length | 328mm（including 1.25" eyepiece holder as dew shield contracted） 388mm（including 1.25" eyepiece holder as dew shield fully stretched） 360mm（including the 3-piece adapter as dew shield contracted） 420mm（including the 3-piece adapter as dew shield fully stretched） | |
OTA Weight | 2kg | |
Total Weight (Including tube ring&dovetail plate） | 2.8kg | |
Rear-end thread type | M68×1-M54×0.75 M54×0.75-M54×0.75 M54×0.75-M48×0.75 (M48×0.75 filter thread inside) | |
Rear end of the 3-piece photographic adapters | M48×0.75 | |
Standard package items | A 65PHQ OTA, a pair of tube rings, a handle, Askar 300mm Vixen-style dovetail plate, a set of 3-piece photographic adapters, a manual | |