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Opticstar AZ90 GOTO
Portable Computerized Telescope - Simple Star Alignment
To order this item outside mainland Britain or Highlands, please contact us.
Opticstar AZ90 GOTO
Opticstar AZ90 GOTO telescope shown from the front and back.
  • 90mm Maksutov
  • Focal length: 1250mm
  • Computerized GOTO technology
  • Simple star alignment
  • Advanced Handset with large screen
  • Includes: 10mm & 25mm eyepieces
Opticstar Visual
Opticstar Mount
CCD Cameras
Opticstar AZ90 GOTO
Package includes:
  • Opticstar AZ90 GOTO telescope with mount & tripod.
  • Advanced GoTo Handset with large display and simple star alignment.
  • 2 x Eyepieces (10mm & 25mm).
  • Accessories: Compass, bubble level.
12VDC 1A Mains Power Supply Unit to power telescope (instead of batteries). + £11.95
Opticstar 1.25" Moon Filter 25% transmission. + £11.95
Red LED Torch (aluminium alloy construction). + £9.95
Order No. Price (inc_VAT) Shipping Delivery click button to purchase
OSRAZ90G £ 249.00 £ 0.00
Delivery information: Delivery time takes approximately 3 business days.
Opticstar AZ GOTO
User Manual (PDF)
Opticstar CCD Cameras

The Opticstar AZ90 GOTO has been designed to be an affordable, fully featured, entry level computerized telescope. The AZ90 GOTO only takes a few minutes to set up and is ideal for beginners or as a travel telescope.

You will be able to see the Moon’s craters, Jupiter and its four Moons, Saturn and its rings, Mars, Venus as well as some of the brighter deep sky objects like the Orion Nebula, the Pleiades, the Double Cluster (NGC 884 & NGC 869, The Beehive Cluster, The Lagoon Nebula, the Andromeda Galaxy, comets and other interesting deep sky objects.

The complete telescope consists of three main parts, a pre-assembled adjustable steel tripod, mount-head and optical tube. It only takes a few minutes to assemble or disassemble the telescope, no tools are required. The telescope can also be operated on a table without the included tripod making it exceptionally portable. It could easily fit in a medium sized rucksack and is light enough to carry in this manner.

The mount has built–in handset and eyepiece holders making such accessories easier to use and locate in the dark. A built-in handle also makes the handling of the telescope easier.

GOTO handset and eyepieces
The compass, GoTo Handset and two eyepieces are bundled with the telescope.

This 90mm Gregorian Maksutov telescope will capture 20% more light and resolve 10% more detail than a similar 80mm telescope. The AZ90 GOTO telescope has a focal length of 1250mm (f/13.9) with multi-coated optics for increased image brightness. It is very well suited for observing the Moon’s features and planets at high magnifications. The telescope will obtain magnifications of x125 and x50 with the bundled 10mm and 25mm eyepieces.

Optional useful accessories would include a 25% transparency Moon filter to reduce the glare of the Moon. A 7mm-8mm eyepiece would deliver higher magnifications (x178-x156) that reveal higher levels of detail on the planets and especially on the Moon. Alternatively a x3 barlow lens in conjunction with the bundled 25mm eyepiece will offer a magnification of x150.

Opticstar AZ GOTO telescopes.

Telescope Control
The AZ90 GOTO is controlled by a modern computerized handset with a large illuminated display showing seven lines of information instead of the usual two found in earlier designs. The larger display makes aligning and controlling the telescope more satisfying and rewarding as you do not need to scroll through screens to get to the information you require.

Once the telescope has been aligned any night sky object can be selected from the built-in database, at the touch of a button the mount will automatically slew and track the object making locating and observing targets straight forward.

Powering the Telescope
The AZ90 GOTO is powered by 8 AA (user supplied) batteries or an optional mains regulated 12VDC 1A power adapter (AZGT-12 Power Adapter). An internal battery compartment eliminates power cable wrap issues associated with external battery packs.

Easy Star Alignment
The advanced Opticstar AZGT hand controller makes aligning and using the telescope straight forward. There is no need to be able to know any of the stars in the night sky to align the AZ90 GOTO. Simply use the supplied bubble level and compass to level and point the telescope North. Then simply follow the instructions on the handset’s screen to complete alignment. The whole process only takes a few minutes.

Opticstar AZ90 GOTO and AZ80 GOTO side by side.
Opticstar AZ90 GOTO and AZ80 GOTO side by side.

Specification of Opticstar AZ GOTO Telescopes
Model Opticstar AZ90 GOTO
Aperture 90mm
Optical design maksutov
Focal length 1250mm
Focal ratio F/13.8
Maximum Practical Magnification x178
Viewfinder red dot finder
Handset Advanced GOTO Handset with database of 272,000 objects, 8-line display and built-in red LED light. Features quick star alignment without any knowledge of the star names or constellations.
Eyepieces 25mm & 10mm
Magnification w/25mm eyep x50
Magnification w/10mm eyep x125
Telescope mounting Altazimuth fork type
Motor drive dual axis motors
Field tripod steel, adjustable
Accessory tray included
Total telescope weight 5.7kg
Telescope weight (no tripod) 3.6kg
Batteries 8 x AA batteries (not included)
Power requirements 12VDC, 1A (tip positive)

Opticstar ARC90/EQ700, AZ90 GOTO and AZ80 GOTO side by side.
Opticstar ARC90 / EQ700, AZ90 GOTO and AZ80 GOTO side by side.

We are constantly checking the accuracy of the technical data. We are prepared to provide more detailed information on request. Technical data is subject to change without notice.

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Cash Back on Opticstar
Imaging Products
updated: 8th September 2017
Opticstar cashback offer.

Customers who purchase any Opticstar telescopes, Opticstar optical tubes or Opticstar mounts listed on this page qualify for a 10% cash back on any Opticstar astronomy cameras purchased at the same time or at a later date.

This offer is valid for 1 year commencing on the date that the Opticstar product is purchased from the Opticstar website or the Opticstar showroom.

Any additional purchases at a later date of Opticstar products that qualify for this offer will renew the cash back period to 1 full year.

Opticstar astronomy cameras that qualify for this offer include the following: Once an Opticstar CCD or CMOS camera has been purchased within a year of the qualifying Opticstar purchase, the cash back can be claimed by contacting Opticstar by email or over the phone quoting the receipt number(s). Please allow up to 14 days to process the payment.

Sample Images
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The M20 nebula shot by John Haunton with the Opticstar DS-145M ICE.
We want to hear your comments.
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updated: 28th February 2019
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