Bushnell Northstar 78-8890 User Manual

INSTRUCTION
MANUAL
Lit.#: 98-0433/05-05
WITH REALVOICE™ OUTPUT
78-8840, 78-8850, 78-8890 MAKSUTOV-CASSEGRAIN
78-8831 76MM REFLECTOR
78-8846 114MM REFLECTOR

Bushnell Northstar 78-8890 Specifications

General

Type	Reflector
Aperture	114 mm
Focal Length	1000 mm
Focal Ratio	f/8.8
Mount Type	Altazimuth
Barlow Lens	3x
Finderscope	Red Dot
Tripod	Aluminum
Eyepieces	20mm
Magnification	50x

Summary

Parts Diagrams

Detailed Assembly

Set Up Tripod and Accessory Tray

Instructions for assembling the tripod and accessory tray.

Attach Telescope Tube

Steps to securely mount the telescope tube onto the base assembly.

Attach Final Telescope Accessories

Focusing Telescope

Procedure for achieving a sharp focus on celestial or terrestrial objects.

Aligning Finderscope

Steps to align the finderscope with the main telescope for accurate aiming.

Attach Remote Computer Controller and Battery

Northstar Computer Interface Diagram

Button Functions

Detailed explanation of the functions of each button on the remote control.

Mode Overview of Product

Explore

Sky Tour

Telescope

Identify

Align Earth

Mode for easily aligning the telescope using common, non-astronomer data.

Align Star

Mode for aligning the telescope using basic astronomical knowledge of star positions.

Align Object

Mode for refining telescope alignment during an observing session.

Aligning Northstar for the First Time

Step 1: Remove Handset

Step 2: Set the Time

Step 3: Set the Date

Step 4: Set the Location

Warranty / Repair

Telescope Lifetime Limited Warranty

Details of the limited lifetime warranty for materials and workmanship.