2" Mirror diagonal with 96% reflectivity enhanced aluminum coatings

by TeleVue Print

What would you like to print?
(Reviews and Documents/Videos will not be printed)

Basic Product Information
Full Description
Tech Details
Supplied Accessories
Recommended Accessories
Images

Print
More product information
This 90° 2” mirror-type star diagonal has enhanced aluminum mirror coatings for 96% reflectivity. The mirror is overcoated with quartz for long life. The diagonal is designed for refractors with 2” focuser drawtubes, but will also work with Schmidt-Cassegrains by adding optional rear cell adapter #7785C. Optional 1.25” adapter #2715C allows the use of 1.25” eyepieces in the diagonal. A safety stop at the bottom of the 2” eyepiece holder tube prevents 2” eyepieces or 2” Barlows from hitting the surface of the mirror. However, if you use the #2715 1.25” adapter, it is possible that an exceptionally long 1.25” Barlow can project far enough into the diagonal to contact the mirror. Any damage caused in this way is not covered by warranty.

The mirror housing and its 2” focuser and eyepiece holder barrels are precision-machined from a single block of solid aluminum, rather than being simply a pair of less-rigid tubes screwed into a flimsy plastic mirror housing or sheet metal stamping, as is the case with lesser diagonals. A solid metal backplate over 4/10ths of an inch thick holds the mirror securely in place to assure permanent collimation of the diagonal’s parts. The 2” barrel that fits into the focuser or visual back is internally antireflection threaded for higher contrast. It is also threaded to accept standard 2” (48mm) filters. A groove cut into the outside of the 2” barrel acts as a safety stop to keep the diagonal from falling should the scope’s visual back or eyepiece holder thumbscrew loosen slightly from cold or use. The 2” eyepiece barrel uses a non-marring soft brass compression ring to hold eyepieces in place, rather than a thumbscrew that contacts the eyepiece barrel directly.

This is a very high quality 2” diagonal that is visibly superior in optics and workmanship to the economy and mid-priced 2” diagonals available from telescope manufacturers. It's a worthy upgrade for virtually any Schmidt-Cassegrain, Maksutov-Cassegrain, or refractor that uses a 2” star diagonal.

Weight:
The weight of this product.
19 oz
Warranty:
5 years
There are currently no Cloudy Nights reviews associated with this product

User Ratings/Reviews from our Customers (www.astronomics.com)
Overall Product Rating: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics(5.00)   # of Ratings: 1   (Only registered customers can rate)

(Only registered customers can rate)

5 - Great (100.00%) (1 user)
4 - Good (0.00%) (0 users)
3 - OK (0.00%) (0 users)
2 - Bad (0.00%) (0 users)
1 - Very Bad (0.00%) (0 users)
0% 50% 100%
astronomics image

Sort Ratings: 

  Show these ratings: ALLGreatGoodOKBadVery Bad

loading request
Showing comments 1-1 of 1
1. robert on 5/17/2013, said: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics
I have to say that prior to using the Tele Vue diagonal I did not believe that using a diagonal with 96% reflectivity would make much of a difference vs the basic diagonal that I was using. However after pairing it up with my Tele Vue Genesis scope and a Baader Hyperion 8-24mm click stop zoom lens I believe I know what Al Nagler means by going for a star walk. I was truly amazing difference, I felt like the stars just popped out of the sky into my eyepiece. Now I just have to get my hands on a Nagler eyepiece.
Was this comment helpful? Yes No   (0 people found this comment helpful, 0 did not)
Showing comments 1-1 of 1
We haven't recommended any accessories for this product quite yet... check back soon or call one of our experts (1-405-364-0858).
This product does not have supplied accessories... or supplied accessories have not been assigned.
Documents
No documents have been associated with this product.
Videos
No videos have been associated with this product.
There are currently no formulas associated with this product
TeleVue - 2" Mirror diagonal with 96% reflectivity enhanced aluminum coatings

Click icon(s) below & hover image above for zoom

TeleVue - 2" Mirror diagonal with 96% reflectivity enhanced aluminum coatingsCloseup of clamp ring mechanism, also showing internal anti-reflection threading.
 AstronomicsAstronomicsAstronomicsAstronomicsAstronomics (Average: 5.00 | Users: 1)  Only registered users can submit ratings - Register Here
Our Product #: 7780C
Manufacturer Product #: DSC-8001
Price: $215.00  FREE ground shipping - Click for more info
Congratulations. Your order qualifies for free ground shipping within the 48 contiguous United States.
MSRP: $240.00
Quantity:   

 E-mail this product to a friend E-mail this product to a friend

Your Email:  
Your Friend's Email:  
Confirm Friend's Email:  

Comments:
  200 characters or less
 

An email containing a link to this product has been sent to the email address you provided.

Clear Skies!
Astronomics

 Have a question? Do you have a question about this product?
 Found a better price? Found a lower price? Click to let us know... or call 800-422-7876 before you buy.

If you’ve found a lower delivered price on this product, let us know about it below. We’ll do our best to meet or beat that price and will get back to you within one business day with our best offer. Thanks for giving us the opportunity to give you a better deal.

Your Name:  
Price:  
From Who:  
Context:  Magazine AdOnline
Website Address:  
Cut and paste the web address into the box above
Your Email:  
Confirm Email:  


We’ll do our best to meet or beat that price and will get back to you within one business day with our best offer. Thanks for giving us the opportunity to give you a better deal.

Clear skies,
Astronomics


This 90° 2” mirror-type star diagonal has enhanced aluminum mirror coatings for 96% reflectivity. The mirror is overcoated with quartz for long life. The diagonal is designed for refractors with 2” focuser drawtubes . . .





. . . our 34th year