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Omegon 150/750 EQ-4 User Manual

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Instruction Manual
Omegon® 150/750 EQ-4
English version 12.2014 Rev A
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Omegon 150/750 EQ-4 Specifications

General IconGeneral
Aperture150 mm
Focal Length750 mm
Focal Ratiof/5
Mount TypeEQ-4
Optical DesignNewtonian Reflector
Finder Scope6x30
Maximum Practical Magnification300x
Resolution (Rayleigh Criterion)0.92 arcseconds
Resolution (Dawes Limit)0.77 arcseconds
Light Gathering Power459x
Eyepieces Included10mm, 25mm
Limiting Stellar Magnitude13.5

Summary

Included Parts

Getting Started

Assembly

Alignment of the optics and collimation

Collimate the optics

Explains the process of aligning telescope optics for sharp images.

So how to get to good alignment?

Details how to achieve proper alignment of telescope mirrors.

Start using your Omegon 150/750 EQ-4 telescope

The finderscope

Explains the importance and function of the finderscope for aiming.

How to align the finderscope?

Provides steps to align the finderscope with the main telescope view.

Using the accessories, a bit of math to understand how all it works

Power (magnification)

Explains how to calculate telescope magnification using focal lengths.

Barlow Lens

Describes the function of a Barlow lens in increasing magnification.

Erecting lens (not included)

Mentions the purpose of an erecting lens for upright images.

Diagonal Mirror (does not apply to this telescope model)

Explains the function of a diagonal mirror, noting it's not for this model.

What can been seen with this telescope?

The Moon

Describes observation details for the Moon and its features.

Jupiter

Details observations of Jupiter and its Galilean moons.

Saturn

Describes observations of Saturn and its rings.

Troubleshooting and frequently asked questions

Mirrored view

Addresses issues with mirrored or reversed images in the telescope.

Finderscope alignment issues

Provides guidance on realigning the finderscope if targets are missed.

Dark image with Barlow lens

Explains why images may appear dark with high magnification.

Compatibility with other eyepieces

Confirms compatibility with 1.25" eyepieces from other manufacturers.

Using telescope for photography

Discusses the limitations and possibilities of using the telescope for photography.

Stars appear as points

Explains that stars naturally appear as points even in large telescopes.

Observing the Sun

Emphasizes the critical need for a solar filter for safe Sun observation.

Cannot see anything

Troubleshoots issues when no image is visible, checking dust caps and usage conditions.

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