Levenhuk Ra R80 ED Doublet OTA

Two-lens apochromatic refractor with extra-low dispersion optics. Aperture: 80mm. Focal length: 500mm

Refractor

Optical design

Aperture – the diameter of the light-collecting lens (refractors and catadioptric) or mirror (reflectors) that the telescope uses to collect light

500

Focal length – the distance from the primary lens or mirror to the point at which the light is focused

Availability

Product ID	50955
Brand	Levenhuk, Inc., USA
Warranty	lifetime
EAN	5905555002552
Package size (LxWxH)	80x37x22
Shipping Weight	7.045

Description

Levenhuk Ra R80 ED Doublet OTA is a two-lens apochromatic refractor with extra-low dispersion optics. This optical tube is perfect for astrophotography, especially for extended objects, and quite well for visual observations. It features a wide field of view, high resolution, and excellent mechanics. Due to its compact size and light weight, this optical tube is irreplaceable during trips. In addition, the kit includes robust aluminum case for storage and transportation.

The telescope effectively reduces chromatic aberration, transmits images of high contrast and clarity. Fully multi-coated optics allows for observing even faint stars. You can easily observe deep sky as well as outer space. Due to the dual-speed focuser, the 2'' accessories can be installed. The focuser provides a very precise sharpness adjustment.

The OTA is made of anodized aluminum and features a high-quality blackening inside. The quick-release thumbscrew allows for installing this OTA on most modern mounts.

Please note: Mount, tripod, and optical accessories are not included.

Features:

Wide-field short-focus apochromatic refractor
Fully multi-coated optics made of ED glass
Dual-speed focuser enables for 2'' accessories installing
High contrast of the picture, minimum chromatic distortion
Perfect for visual observations and astrophotography

The kit includes:

Telescope optical tube
Cleaning wipe
Aluminum case
Protective caps
User manual and lifetime warranty

Specifications

Product ID	50955
Brand	Levenhuk, Inc., USA
Warranty	lifetime
EAN	5905555002552
Package size (LxWxH)	80x37x22
Shipping Weight	7.045
Optical design	refractor
Optical scheme	apochromat
Optics material	ED
Optics coating	fully multi-coated
Objective lens diameter (aperture), mm	80
Focal length, mm	500
Highest practical power, x	160
Aperture ratio	f/6.25
Resolution threshold, arcseconds	1.45
Limiting stellar magnitude	11.62
Focuser	2", 2-speed, rack & pinion
Telescope control	manual
Optical tube mounting mode	quick-release 1/4" thumbscrew
Optical tube material	anodized aluminum
User level	experienced users, professionals
Assembly and installation difficulty level	easy
Observed object	planets of the Solar System
Pouch/case/bag in set	case

References
and downloads

User manual: Levenhuk Ra ED Doublet OTA (pdf)

(PDF, 436.99 Kb)

High-resolution images (zip)

(ZIP, 31.58 Mb)

click to
download

Reviews

Telescope accessory installation diagrams (.pdf) (13.12.2019)
Convenient diagrams that describe how to install additional accessories on refractors and catadioptric telescopes

Levenhuk Telescope Assembly Guide (14.12.2019)
Find out how to assemble a telescope on an example of the Levenhuk Skyline 90x900 EQ telescope

A quick guide for novice astronomers (16.12.2019)
This short guide will help you avoid typical mistakes and learn more about telescope and mounting types

A telescope: how to start observing (16.12.2019)
The basics of astronomical observations for beginners

Frequently Asked Questions – Telescopes (20.04.2020)
In this article we have gathered answers to some of the most frequently asked questions about telescopes

Top 10 celestial objects you can see with our telescopes (20.04.2020)
The most interesting celestial objects you can observe with Levenhuk telescopes

Telescope Under a Microscope: How Does It Work? (18.05.2020)
How telescopes work?

First Steps in Astronomy Made Easy! (18.05.2020)
You can actually perform observations from your balcony!

Beginner’s Short Guide to Telescopes (18.05.2020)
All about telescope sizes, types, magnification, and mounts

How to use a telescope (18.05.2020)
Learn how to set up and use the telescope properly

Astronomical observations in the city (18.05.2020)
Astronomy in light-polluted skies. Find out what you can observe in the city

Telescopes for children (19.05.2020)
Read an interesting comprehensive article on telescopes for little astronomers

Top 5 most beautiful celestial objects that can be seen with your telescope (19.05.2020)
The pictures are made with Levenhuk telescopes

Things you can see with a telescope based on its aperture (19.05.2020)
Celestial objects you can observe with telescopes of different apertures

What can you see with a telescope (19.05.2020)
Colored and vivid images of galaxies, planets and star clusters entrance everyone who is fascinated by boundless space

What is a refracting telescope? (20.05.2020)
Find an interesting review on the history of the changes to a refracting telescope

How to choose a telescope (20.05.2020)
To make the process of choosing a telescope easier, we will tell you about the characteristics of the most popular types of telescopes today

A short guide to refractor telescopes: choose your equipment wisely (20.05.2020)
Learn everything you need to know about refractor telescopes to make the right choice

Questions and Answers

John Larsen (2015.04.18)

I've owned my Questar 3 1/2" standard since 1984, but have decided to buy a decent refractor for mostly terrestrial observing from my home. I have a SLIK Pro tripod. What mount/s does this model come with, and if I decide to take the plunge, can you help me select a "package" to include the diagonal and 2-3 decent lenses? Thanks a lot for your consideration. John L.

Customer service:

Hi John,
Thanks for the query.
Unfortunately, the Levenhuk Ra R80 ED Doublet OTA is currently out of stock and we do not expect it back any time soon.
I'd recommend to check out Levenhuk Ra R80 ED Doublet Carbon OTA here at https://eu.levenhuk.com/catalogue/telescopes/levenhuk-ra-r80-ed-doublet-carbon-ota/
This OTA does not come with a mount, it has a quick-release thumbscrew tube-mount assembly system.
The highest practical power of this OTA is 160x.
To find out what eyepiece is required to achieve it, you need to divide its focal length by the highest practical power (that's 500 divided by 160 in case of Ra R80 ED Doublet OTA).
The answer is 3.13 mm and such eyepiece doesn't exist so you need to choose one of the closest, for example Levenhuk Ra 2" ED 35 mm Eyepiece.

robert (2015.03.15)

I would like to know how much back focus the Ra R80 ED doublet has

Customer service:

Hello Robert,

Thank you for interest in Levenhuk products.

The back focus of our 80mm refractor is 135.3mm, the distance between the end surface to the fron surface of the T2 mount is 80.3mm.

The Levenhuk Ra R80 ED Doublet OTA is currently out of stock, but we have the same model with carbon fiber tube.

You can find it here online:
https://eu.levenhuk.com/catalogue/telescopes/levenhuk-ra-r80-ed-doublet-carbon-ota/

Looking forward to your reply.

bob (2014.08.23)

you guys never answered glenns ?. about how this scope is for astrophotography. be it dslr or a ccd or cmos

Customer service:

Dear Bob, thank you for interest in Levenhuk products.
Yes, this scope is perfect for astrophotography. You can use both CCD or DSLR camera with this scope. To attach a DSLR camera, you will need an appropriate T-ring and a camera adapter. CCD camera cab be simply inserted into the focuser.

Is there any additional information you might need?

Looking forward to your reply.

mansour kargari (2014.08.04)

Hi,I'm interested in buying the Ra R80 ED Doublet OTA. Does the 2" focuser has graduated scale mark or not?

Customer service:

Dear Mansour, thank you for your interest in Levenhuk products.
Yes, the 2'' focuser comes with the graduated scale mark.
Is there any additional information you might need?

SEE KAM KWONG (2014.06.10)

I am interested with Levenhuk Ra R80 ED Doublet OTA, I want to confirm that whether the ED glass is made of FPL-53 material?

Customer service:

Dear See Kam, thank you for interest in Levenhuk products! One ED glass is made of FPL53 ED and the other is NBM51. Is there any additional information you might need? Looking forward to your reply.

Glenn (2014.02.14)

Good day. I wanna buy a telescope- I've always dreamed of observing space beauties by myself! This idea just haunts my mind. I'd prefer one up to $800, which can help me to see planets and deep sky objects. I am thinking about astrophotography in the future (I have Nikon D3100). I've read some articles on the internet and now I know that the most important thing about telescopes is aperture. Please tell me, isn't 80 mm too small? Is it better to purchase a telescope with bigger objective lens? If this model is fine for me, then what accessories I might need?

Customer service:

Levenhuk Ra R80 ED Doublet OTA Telescope is very good for lunar and planetary observations. As compared to the similarly priced models, this model provides images of better quality. Eyepieces that come in useful for this telescope: Levenhuk Ra LER 3 mm Eyepiece https://eu.levenhuk.com/catalogue/accessories/telescope-accessories/telescope-eyepieces/levenhuk-ra-ler-3mm-1-25-eyepiece/ ; Levenhuk Ra LER 6 mm Eyepiece https://eu.levenhuk.com/catalogue/accessories/telescope-accessories/telescope-eyepieces/levenhuk-ra-ler-6mm-1-25-eyepiece/
If you want a more universal model, consider the Levenhuk SkyMatic 105 GT MAK telescope: https://eu.levenhuk.com/catalogue/telescopes/levenhuk-skymatic-105-gt-mak-telescope/ . It's suitable for both planetary and deep-sky observations.

Submit your question

Accessories

Levenhuk LP10 Cleaning Pen

Levenhuk Optics Cleaning Cloth

Levenhuk A10 Smartphone Adapter

Space. Non-empty emptiness. Knowledge book

see all