* Premium double ED quadruplet
* Flat field w/60mmø image circle
* Image circle will accept medium format CCD cameras or Digital SLR's
* Large heavy duty 72mmø focuser carries medium format CCD camera
* Highly portable for worldwide or remote site uses; the light weight will allow
smaller more portable mounts to be used with good effect
* Light weight flat-field astrograph
* High order of color correction produces outstanding images and extremely fine
views
* Built-in camera rotator [camera angle adjuster] allows the camera to be
rotated 360° without loss of critical focus and fine focuser for precise focus
* Designed from the beginning for digital imaging
* Uses a newly designed Extender-ED 1.5x to increase focal length for high power
viewing
SPECIFICATIONS
Type Modified Petzval 4-element double ED flat-field design
Aperture 85mmø
Focal length 450mm
Focal ratio f/5.3
Image circle 60mmø 5.6°
Back focus 200mm <>
With Reducer -QE .75x
Focal length 328mm
Focal ratio f/3.86
Image circle 40mmø
Image field 7.0°
Metal back 72.2mm<>
Extender-ED 1.5x
Focal length 328mm
Focal ratio f/8
Image circle 44mmø
Metal back 117.5<>
Tube
Length 322mm [12.68"] w/lens shade collapsed
Focuser 80mmø w/42mm draw and trigger lock focus clamp w/fine focuser built in
Tube 95mmø
Diameter
Total weight 3.9kgs [8.58lbs]