{"id":32351,"date":"2025-11-02T13:07:14","date_gmt":"2025-11-02T12:07:14","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=32351"},"modified":"2026-03-03T20:21:46","modified_gmt":"2026-03-03T19:21:46","slug":"bresser-ac-90-900-telescope-messier-ota","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/bresser-ac-90-900-telescoop-messier-ota\/","title":{"rendered":"Bresser AC 90\/900 Telescope Messier OTA"},"content":{"rendered":"

Bresser AC 90\/900 Telescope Messier OTA<\/strong><\/p>\n\n\n\n

Classic design with razor-sharp images<\/h3>\n\n\n\n

The Bresser AC 90\/900 is made for those who like to see the Moon, planets and star clusters in detail.
With its focal length of 900 mm, this refractor delivers a calm, high-contrast image - ideal for beginners and advanced users who want sharp, true-to-life results. The f\/10 aperture ratio reduces color aberrations, keeping your image bright and clean.<\/p>\n\n\n\n

\n
\"Bresser<\/figure>\n<\/figure>\n\n\n\n

Quickly ready to use<\/h3>\n\n\n\n

The telescope is compact, lightweight and easy to assemble. You can start observing right away thanks to the included accessories such as eyepiece, viewfinder and zenith mirror. Perfect if you want to quickly look into the sky without complicated settings.<\/p>\n\n\n\n

Suitable for Moon, planets and star clusters<\/h3>\n\n\n\n

With its 90 mm aperture, the telescope captures enough light to show details invisible to the naked eye.
The Moon shows deep craters and sharp edges, Jupiter its cloud bands and moons, and Saturn shines with its rings. Bright star clusters such as the Pleiades also come to life.<\/p>\n\n\n\n

\n
\"Bresser<\/figure>\n<\/figure>\n\n\n\n

Durably and reliably built<\/h3>\n\n\n\n

The aluminum tube construction is rugged but light, and the Vixen swallowtail makes it compatible with many mounts.
The telescope grows with you: ideal for expanding later with accessories or a stable mount.<\/p>\n\n\n\n

What to expect<\/h3>\n\n\n\n

\u2713 Moon: excellent fit
\u2713 Planets: visible in great detail
\u2713 Star clusters: bright and contrasty
\u2717 Deep-sky: limited by f\/10
\u2717 Astrophotography: not recommended<\/p>\n\n\n\n

Specifications<\/h3>\n\n\n\n

Optics<\/h4>\n\n\n\n
Feature<\/th>Description<\/th><\/tr><\/thead>
Design<\/td>Achromat (refractor)<\/td><\/tr>
Type<\/td>Refractor<\/td><\/tr>
Aperture (mm)<\/td>90<\/td><\/tr>
Focal length (mm)<\/td>900<\/td><\/tr>
Aperture ratio (f\/)<\/td>10<\/td><\/tr>
Resolution<\/td>1,28\u2033<\/td><\/tr>
Limit value (mag)<\/td>11,6<\/td><\/tr>
Light output relative to eye<\/td>170\u00d7<\/td><\/tr>
Max. useful magnification<\/td>180\u00d7<\/td><\/tr>
Tube construction<\/td>Full tube<\/td><\/tr>
Tube weight (kg)<\/td>2,5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Focuser<\/h4>\n\n\n\n
Feature<\/th>Description<\/th><\/tr><\/thead>
Design<\/td>Rack<\/td><\/tr>
Ocular connection<\/td>1,25\u2033<\/td><\/tr>
Connection (camera side)<\/td>T2<\/td><\/tr>
Reduction<\/td>Without<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Mount<\/h4>\n\n\n\n
Feature<\/th>Description<\/th><\/tr><\/thead>
Type of mount<\/td>Without a mount (OTA)<\/td><\/tr>
GoTo steering<\/td>No<\/td><\/tr>
Dovetail compatibility<\/td>Vixen-style<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Included accessories<\/h4>\n\n\n\n
Section<\/th>Description<\/th><\/tr><\/thead>
Ocular<\/td>26 mm Super Pl\u00f6ssl (1.25\u2033)<\/td><\/tr>
Seeker<\/td>6\u00d730 viewfinder<\/td><\/tr>
Zenith mirror<\/td>1.25\u2033, 90\u00b0 star diagonal<\/td><\/tr>
Solar filters<\/td>Yes<\/td><\/tr>
Dew cap<\/td>Yes<\/td><\/tr>
Tube Rings<\/td>Yes<\/td><\/tr>
Camera adapter<\/td>Smartphone adapter<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

General<\/h4>\n\n\n\n
Feature<\/th>Description<\/th><\/tr><\/thead>
Series<\/td>Messier<\/td><\/tr>
Total weight (kg)<\/td>2,5<\/td><\/tr>
Application<\/td>Moon & Planets, Star clusters, Nature observation<\/td><\/tr>
Astrophotography<\/td>No<\/td><\/tr>
Recommended for<\/td>Advanced<\/td><\/tr>
Observatory use<\/td>No<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

Bresser AC 90\/900 comes with achromatic optical tube, SP 26 mm eyepiece, 6\u00d730 viewfinder, 90\u00b0 star diagonal, integrated dew cap, Vixen-Style tube rings, solar filters and smartphone camera adapter.<\/p>","protected":false},"featured_media":96602,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[128],"product_cat":[51,567],"product_tag":[],"class_list":["post-32351","product","type-product","status-publish","has-post-thumbnail","product_brand-bresser","product_cat-telescopen","product_cat-refractors","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":31930,"url":"https:\/\/staging.telescoop.nl\/en\/bresser-messier-90-900-refractor-exos-1\/","url_meta":{"origin":32351,"position":0},"title":"Bresser Messier 90\/900 Refractor EXOS-1","author":"","date":"01-11-2025","format":false,"excerpt":"Bresser AC 90\/900 comes with EXOS-1 mount, 26mm Super Pl\u00f6ssl eyepiece, 6x30 viewfinder, 90\u00b0 zenith prism, solar filter, rotating star chart, smartphone adapter, counterweight and steel tripod - perfect for beginners who want sharp images of the moon, planets and star clusters.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-900-Telescoop-Messier-EXOS-1-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-900-Telescoop-Messier-EXOS-1-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-900-Telescoop-Messier-EXOS-1-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-900-Telescoop-Messier-EXOS-1-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":12398,"url":"https:\/\/staging.telescoop.nl\/en\/bresser-messier-90-900-refractor-nano-az\/","url_meta":{"origin":32351,"position":1},"title":"Bresser Messier 90\/900 Refractor Nano AZ","author":"Info telescoop","date":"27-02-2025","format":false,"excerpt":"\u00a0 Bresser Telescope AC 90\/900 Messier Nano AZ comes with 90 mm aperture, 900 mm focal length, Nano AZ mount, tripod, an eyepiece, an optical viewfinder - a complete beginner's set with serious optics.","rel":"","context":"With 1 comment","block_context":{"text":"With 1 comment","link":"https:\/\/staging.telescoop.nl\/en\/bresser-messier-90-900-refractor-nano-az\/#comments"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Bresser-Telescoop-AC-90-900-Messier-Nano-AZ.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Bresser-Telescoop-AC-90-900-Messier-Nano-AZ.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Bresser-Telescoop-AC-90-900-Messier-Nano-AZ.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Bresser-Telescoop-AC-90-900-Messier-Nano-AZ.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Bresser-Telescoop-AC-90-900-Messier-Nano-AZ.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Bresser-Telescoop-AC-90-900-Messier-Nano-AZ.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":32142,"url":"https:\/\/staging.telescoop.nl\/en\/bresser-messier-90-900-refractor-goto\/","url_meta":{"origin":32351,"position":2},"title":"Bresser Messier 90\/900 Refractor GoTo","author":"","date":"01-11-2025","format":false,"excerpt":"Bresser AC 90\/900 EXOS 2 comes with EXOS-2 GoTo mount and hand controller, stainless steel tripod, 6\u00d730 viewfinder, 26 mm eyepiece, 90\u00b0 star diagonal and solar filters.\u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-900-EXOS-2-Telescoop-Messier-GoTo-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-900-EXOS-2-Telescoop-Messier-GoTo-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-900-EXOS-2-Telescoop-Messier-GoTo-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-900-EXOS-2-Telescoop-Messier-GoTo-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":32335,"url":"https:\/\/staging.telescoop.nl\/en\/bresser-messier-ac-90-1200-messier-ota\/","url_meta":{"origin":32351,"position":3},"title":"Bresser Messier AC 90\/1200 Messier OTA","author":"Info telescoop","date":"02-11-2025","format":false,"excerpt":"Bresser AC 90\/1200 comes with achromatic optical tube, integrated dew cap, SP 26 mm eyepiece, 6\u00d730 viewfinder, 90\u00b0 star diagonal, Vixen-Style tube rings and solar filters.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-1200-Telescoop-Messier-OTA-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-1200-Telescoop-Messier-OTA-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-1200-Telescoop-Messier-OTA-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/Bresser-AC-90-1200-Telescoop-Messier-OTA-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":31911,"url":"https:\/\/staging.telescoop.nl\/en\/bresser-90-900-refractor-az-eq-taurus\/","url_meta":{"origin":32351,"position":4},"title":"Bresser 90\/900 Refractor AZ-EQ Taurus","author":"","date":"01-11-2025","format":false,"excerpt":"Bresser AC 90\/900 comes with AZ-EQ mount, aluminum tripod, red dot viewfinder, 4mm and 20mm eyepieces, 3x Barlow lens, 90\u00b0 star prism, solar filter and smartphone adapter - 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