William Optics Z103 Owner's manual

Brand: William Optics

Model: Z103

Type: Owner's manual

This manual is also suitable for

Zenithstar 103 APO

William Optics Z103 is a powerful APO refractor telescope with a large 103mm aperture and a fast f/6.9 focal ratio. Thanks to its advanced optical design, it delivers sharp and color-corrected images even at high magnifications.

The Z103 is equipped with a robust 2.5” rack and pinion focuser. This focuser provides precise and smooth focusing, making it ideal for both visual observations and astrophotography. The focuser also features a 1:10 dual-speed microfocuser, for even more precise focusing. The telescope comes with a retractable dew shield that helps to prevent dew from forming on the objective lens. It also has a built-in temperature gauge, so you can keep an eye on the temperature of your telescope and adjust your observing or imaging plans accordingly.

William Optics Z103 is a powerful APO refractor telescope with a large 103mm aperture and a fast f/6.9 focal ratio. Thanks to its advanced optical design, it delivers sharp and color-corrected images even at high magnifications.

The Z103 is equipped with a robust 2.5” rack and pinion focuser. This focuser provides precise and smooth focusing, making it ideal for both visual observations and astrophotography. The focuser also features a 1:10 dual-speed microfocuser, for even more precise focusing. The telescope comes with a retractable dew shield that helps to prevent dew from forming on the objective lens. It also has a built-in temperature gauge, so you can keep an eye on the temperature of your telescope and adjust your observing or imaging plans accordingly.

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

1
2
3
4
5
6
7
8
9
10

William Optics Z103 Owner's manual

Brand: William Optics

Model: Z103

Type: Owner's manual

This manual is also suitable for

Zenithstar 103 APO

William Optics Z103 is a powerful APO refractor telescope with a large 103mm aperture and a fast f/6.9 focal ratio. Thanks to its advanced optical design, it delivers sharp and color-corrected images even at high magnifications.

The Z103 is equipped with a robust 2.5” rack and pinion focuser. This focuser provides precise and smooth focusing, making it ideal for both visual observations and astrophotography. The focuser also features a 1:10 dual-speed microfocuser, for even more precise focusing. The telescope comes with a retractable dew shield that helps to prevent dew from forming on the objective lens. It also has a built-in temperature gauge, so you can keep an eye on the temperature of your telescope and adjust your observing or imaging plans accordingly.

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