Askar 80ED F7 ED Doublet (D80ED)

Product Size Diagram

1. Dew shield
2. Handle
3. Finder base
4. 2″ adapter
5. 200mm Vixen style dovetail plate

1. Quick-release plate mounting hole
2. Bottom locking screw
3. Coarse adjustment handwheel
4. Fine adjustment handwheel

1. Tube ring locking screw
2. Finder base locking screw
3. Finder base

The Locking Screw Position Diagram

(2) Bottom Locking Screw

(1)(3)(4)(5) Can be used for electric focusing bracket installation

Electronic Focuser Assembly Diagram

(1) Remove the thumb screw

(2) Remove the coarse adjustment knob with a 2mm wrench

(3) Put the motor bracket on and screw the standard M4 screws into the hole shown, but please do not lock them now.

(4) Choose the 5-6mm flexible coupling and lock this screw.

(5) Insert the EAF(optional) into the flexible coupling and lock the coupling end locking screw.

(6) Lock the EAF mounting screws

(7) Finally, lock the M4 fixing screws

Optical Path Diagram

ED glass 200mm
Layout
Total Axial Length: 567.57807 mm	Askar 80ED 80mm F7

Spot Diagram

X = 42.22, Y = 88.22     0.43     0.45 0.486   0.546   0.587   0.656     0.68 Surface: IMA
Spot Diagram
Units are µm. Legend items refer to Wavelengths Field              :         1           2           3             4            5             6             7 RMS radius : 3.999   4.017     4.105    4.293     4.509     4.758      5.110 GEO radius : 8.942   9.379   11.378   13.342   14.289   14.450   13.472 Box width    : 200      Reference : Centroid	Askar 80ED 1.0x Flattener

0.43     0.45 0.486   0.546   0.587   0.656     0.68 Surface: IMA
Spot Diagram
Units are µm. Legend items refer to Wavelengths Field              :         1           2           3             4            5               6             7 RMS radius : 4.039    4.022     3.909    3.940    4.081    4.347     4.631 GEO radius : 10.782  11.137   10.837    9.905     9.155    9.542   10.584 Box width    : 200      Reference : Centroid	Askar 80ED 0.85x Reducer

0.43     0.45 0.486   0.546   0.587   0.656    0.68 Surface: IMA
Spot Diagram
Units are µm. Legend items refer to Wavelengths Field              :         1           2           3             4            5             6             7 RMS radius : 4.477   4.563     4.472    4.428     4.351     4.206    4.526 GEO radius : 9.913   12.193   11.779   11.605   10.937   12.577   12.221 Box width    : 200      Reference : Centroid	Askar 80ED 0.7x Reducer

Longitudinal Aberration

Pupil Radius: 40.0000 Millimeters 0.430 0.450 0.486 0.546 0.587 0.656 0.680
Longitudinal Aberration
Wavelengths: From 0.430 To 0.680 µm Legend items refer to Wavelengths	Askar 80ED 80mm F7

Documents / Resources

Askar D80ED F7 ED Doublet Refactor [pdf] Instruction Manual D80ED F7 ED Doublet Refactor, D80ED, F7 ED Doublet Refactor, Doublet Refactor, Refactor

References

• User Manual