William Optics Zenithstar 103 APO User manual

ZENITHSTAR 103 APO
Owner’s Manual ver. 1.0
2018.09

Contents
Specification 3
Package Contents 4
Tools necessary for this scope 4
Telescope Diagram 5
Accessories Map 10

Specification
Aperture 103mm
Focal Ratio F/6.9
Focal Length 711mm
Image Circle Z103 with Flat 6A II Φ 43mm
Limiting magnitude 10
Objective Type Synthetic Flourite FPL 53 Doublet, Air Spaced, APO
Fully Multi-Coated, SMC coating.
Lens Shade Retractable
Focuser 2.5”R&P Ultra robust focuser
with 1:10 Dual Speed micro focuser
Field Stops Baffles
Mounting Rings Provided
Tube Diameters 105mm
Tube Length 615mm Fully Retracted
750mm Fully Extended
Tube Weight 4.36kg (Rings and Dovetail include)

Tools necessary for this scope
2.5mm Allen key
Package Contents
5.0mm Allen key Your Hands
[2]
[5]
[3]
[6]
[1]
[4]
[1] 2.5” R&P Focuser
[3] CNC Carry Handle Bar
[5] Mounting Rings
[2] Guiding Rings
[4] Innovative Bahtinov Mask Cover (Patented)
[6] Long Vixen Style Dovetail Plate

1. Bahtinov Mask
2. Retractable Dew Shield
3. Main Tube
Extend
Dew Shield Lock Screw
Your Hands

4. Focuser Rotation Locking Screw
5.Draw Tube Tension Adjustment
6. Temperature Gauge 7. 1.25” Adapter
2.5mm Allen key
Your Hands

9. Vixen Style Bracket Holder Screws
for Finder bracket
(remove both screws before use)
10. 10:1 Ratio Fine Knob
8. Two inch draw tube locking screws
2.5mm Allen key
Your Hands
2.5mm Screw

2mm Screw
M5x15L
The focuser drawtube smoothness can be adjusted
using a 2 mm Allen key and tension should be adjusted
O N LY when necessary by progressively tightening the
screw until you reach the desired smoothness.
NOTE: DO NOT ADJUST IT BEFORE ASKING WO

12. Dovetail &Mounting Rings
11. Handle &Guiding Rings
M5x11L
M5x15L
5.0mm Allen key
M5x7L

2” Diagonal
SWAN 33mm
2” to 1.25” Adapter
CCD Camera
Adjustable Flat6A II T-Mount
1.25” 45 °Ecreting Prism
1.25” Dielectric CF Plate SPL 12.5mm (1.25 inch) Eyepiece
SWAN 9mm
M63 to M48 Photo adapter
Equatorial Mount
2.5” M63 Angle Rotator
Guiding scope