Best for viewing
Fainter deep sky
Best for imaging
Solar, lunar, planetary & Messier objects
Astro-imaging capability
Lunar, planetary & long exposure
User level
Advanced
Optical design
Advanced Coma-Free (ACF)
Optical diameter
406mm
Focal length
3251mm
Focal ratio
f/8.0
Resolving power
0.28arc*sec
Lowest useful magnification
58x
Highest useful magnification
300x
Highest theoretical magnification
812x
Limiting stellar magnitude
15.7
Optical quality
Diffraction limited
Finder scope
None
Focuser
Internal
Mount type
Optical Tube without Mount
Tube material
Aluminum
Weight, optical tube
70.0 lbs.
Additional included accessories
Losmandy style dovetail bar
Other features
Ultra High Transmission Coatings (UHTC), Internal zero-shift Crayford style focuser
Warranty
Two