2" Orion Refractor Telescope Mirror Diagonal | Orion Telescopes

Orion Telescopes

1-800-447-1001
Live Chat
Email Us

Why Buy From Orion

30 Day Money Back Guarantee
Safe & Secure Shopping
Same Day Shipping
Easy Returns
Sale Price Guarantee
Free Technical Support

More Information

Images

Images

2" Orion Refractor Telescope Mirror Diagonal

Subscribe

Quantity:

Accepted Payment

More Shipping Information

Mirror diagonal with a 90° design features polished optics to yield maximum performance of big 2" telescope eyepieces
2" diagonal for use with refractor telescopes
Accepts 2" eyepieces and includes 1.25" eyepiece adapter for use with smaller 1.25" eyepieces and accessories
Fits 2" focusers on refractor telescopes
A convenient accessory for switching between large 2" and 1.25" eyepieces when viewing with a refractor telescope

Learn more

Item # 08850

Print

Add to Wish List

Email Friend

More Info

Many observers prefer to use a good-quality mirror diagonal instead of a prism diagonal with high-end telescope systems. The mirror in this 2" Orion Refractor Mirror Diagonal is meticulously polished to yield maximum performance. Housing is made of black-anodized aluminum. Barrel is internally blackened. This 2" diagonal accepts both 2" and 1.25" eyepieces (with included adapter). The 2" eyepiece holder has two locking setscrews for maximum eyepiece security. This telescope diagonal renders images that are right-side up and reversed left to right (therefore, not recommended for terrestrial observing).

Diagonals are not suitable for use with Newtonian reflector telescopes due to insufficient focus travel.

Warranty

Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-676-1343.

Specs

Barrel size

2"
Coatings

Coatings

Lenses are coated with an antireflective material to ensure that as little light as possible is reflected away, so more gets to your eye. Good lenses are at least "fully coated," with a single layer of magnesium fluoride applied to each air-to-glass lens surface. Multiple layers of coatings are even more effective; the term "multi-coated" means one or more lens surfaces have multiple coatings. "Fully multi-coated" is even better, meaning that all lens surfaces are multiple-layer coated. Mirror star diagonals are coated with a reflective material similar to telescope mirrors in order to reflect the light into the eyepiece. Standard aluminum coatings reflect between 88%-92%, and enhanced aluminum reflects 97%. Dielectric coatings use a different process to deposit a coating that reflects 99% of the light. In addition to the higher reflectivity, Dielectric coatings are much more durable than aluminum coatings, so they last longer and can be cleaned with less risk of damage.

Standard aluminum
Optical quality

Optical quality

"Diffraction Limited" means that the limits of image detail are determined by the physical properties of light, and not by optical defects in the telescope.

Diffraction limited
Filter threads

Yes
Compression ring

Compression ring

Instead of a single thumb screw locking the eyepiece in place, a brass ring compressed by a thumb screw secures the eyepiece. This spreads clamping force over a larger area of the eyepiece's barrel, which provides a better connection. The compression ring also prevents the tip of the thumb screw from producing unsightly scratches and divots on the eyepiece barrel.

No
2"-1.25" adapter

Included
Weight (oz.)

20
Warranty

One year

Shipping Info

Orders received by noon Pacific Time for in-stock items ship the same business day. Orders received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

Reviews

1-800-447-1001
Live Chat
Email Us

Why Buy From Orion

30 Day Money Back Guarantee
Safe & Secure Shopping
Same Day Shipping
Easy Returns
Sale Price Guarantee
Free Technical Support

More Information

ABOUT SSL CERTIFICATES

We Also Suggest

{ entityId: 8727, entityType: 'product' }

Step up to

2" Orion Dielectric Mirror Star Diagonal

The 2" Orion Dielectric Mirror Star Diagonal boasts 99% reflectivity giving you very bright images. It is very durable and includes a 2"-1.25" adapter so you can use all your 1.25" and 2" eyepieces.

{ entityId: 5825, entityType: 'product' }

Orion Deluxe 6-Piece Optics Cleaning Kit

The Orion Deluxe 6-Piece Optics Cleaning Kit contains everything you need to care for any optical surface. Includes Ultra Brush Dust Remover, Dust Pro Compressed Air, Cleaning Fluid, 2 Booklets of Premium-Grade Lens Tissue, and Ten Cotton Swabs.

{"afterScroll":"","unitSize":210,"scrollSpeed":500,"widgetClass":"SnapToScrollerWidget","snapClosest":true,"direction":"vertical","bindings":{"bind0":{"element":"#_widget89278110007_trigger","type":"scrollend","fn":"function(event, pageNum) { PagedDataSetFilmstripLoaderWidget.loadPage(\'#relatedItems\', Math.floor(pageNum)); }"}},"beforeScroll":"","animateScroll":"true","scrollAmount":1050}

{entityCount: 2}

{"imageThreshold":5,"dataModel":{"cacheEntitiesInRequest":false,"imageHeight":90,"dataProviderWidget":"com.fry.ocpsdk.widget.catalog.dataproviders.RelatedItemsDataProviderWidget","direction":"vertical","entityTypeId":"4","entityId":"8850","itemViewerWidget":"com.fry.starter.widget.viewers.ItemViewerWidget","imageWidth":90},"widgetClass":"PagedDataSetFilmstripLoaderWidget","emptyItemViewer":"<div class=\"image\"></div><div class=\"info\"><div class=\"name\"></div><div class=\"orionPrice\"></div></div>","direction":"vertical","loadThreshold":1,"pages":10,"pageSize":"5"}

{"dragByHandle":true,"cssSelector":"ql-category","dragByBody":false,"widgetClass":"OverlayWidget","bindings":{"bind0":{"element":".Quicklook > .trigger","type":"quicklookselected","fn":"function(){$.fnProxy(arguments,\'#_widget89278110020\',OverlayWidget.show,\'OverlayWidget.show\');}"},"bind1":{"element":".PagedDataSetFilmstripLoader > .trigger","type":"itemsloaded","fn":"function(event, startIndex, itemCount, newItems) { QuickLookWidget.assignEvents(newItems); $(\".Quicklook > .trigger\", newItems).bind(\"quicklookselected\", function(event, source, x, y) { OverlayWidget.show(\'#_widget89278110020\', event, source, x, y); }); }"}},"effectOnHide":"fade","effectOnShowOptions":"{}","closeOnBackgroundClick":true,"effectOnHideOptions":"{}","effectOnShowSpeed":"","onScreenPadding":10,"allowOffScreenOverlay":false,"effectOnHideSpeed":"1200","effectOnShow":"fade","captureClicks":true}

ABOUT SSL CERTIFICATES

Payment Options

Why Buy From Orion

30 Day Money Back Guarantee
Safe & Secure Shopping
Same Day Shipping
Easy Returns
Sale Price Guarantee
Free Technical Support

More Information

Shop our Catalog

Shop Our Catalogs

Check out our colorful catalogs, filled with hundreds of quality products.

See the eCatalogs Request a Print Catalog

Check out the Orion Facebook page

Check Orion on YouTube

800-447-1001
Telescope.com
© 2002-2013 Orion Telescopes & Binoculars All rights reserved
DMCA/Copyright
Terms and Conditions
Privacy & Security

About Orion Telescopes & Binoculars

Since 1975 Orion Telescopes & Binoculars has been offering telescopes for sale direct to customers, with an unswerving commitment to best quality products, value and unmatched customer care. Our 100% satisfaction guarantee says it all.

Orion offers telescopes for every level: Beginner, Intermediate, Advanced, and Expert. From our entry level beginner telescopes for amateur astronomers to our Dobsonian telescopes to our most advanced Cassegrain telescopes and accessories, you can find the best telescope for you. And you'll enjoy discount prices by buying your telescope online, direct from Orion. Not sure how to choose a telescope? Orion's Telescope Buyer's Guide is a great place to start.

Orion binoculars are known for quality optics at a great price. We offer binoculars for every viewing interest, including astronomical binoculars, compact binoculars, waterproof binoculars, birding binoculars, and sport and hunting binoculars.

Orion's telescope and astrophotography accessories will enhance your telescope enjoyment without breaking the bank. Expand your viewing experience with accessories ranging from moon filters to power-boosting Barlow lenses to advanced computerized telescope mounts. Capture breathtaking photos with our affordable astrophotography cameras. And when you're stargazing, Orion's telescope cases and covers, observing gear, red LED flashlights, astronomy books and star charts will make your observing sessions more convenient, comfortable and meaningful.

At Orion, we are committed to sharing our knowledge and passion for astronomy and astrophotography with the amateur astronomy community. Visit the Orion Community Center for in-depth information on telescopes, binoculars, and astrophotography. You can find astrophotography "how to" tips and share your best astronomy pictures here. Submit astronomy articles, events, and reviews, and even become a featured Orion customer!