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PLEASE BE INFORMED DUE TO COVID19 OUR DELIVERY MAY TAKE LONGER THAN USUAL. THANK YOU FOR YOUR UNDERSTANDING!
DUE TO COVID19 OUR DELIVERY MAY TAKE LONGER THAN USUAL. THANK YOU FOR YOUR UNDERSTANDING!

Explore Scientific 3" Diagonal

$685.99

The Explore Scientific 3-inch Dielectric-Coated Diagonal Mirror comes complete with 2 inch Adapter and dust covers. Solid construction and light weight, this first surface coated diagonal mirror reflects 99% of the light to help maintain the brightest possible image from your telescope.

The insert barrel is a double taper, so it can be smoothly inserted or withdrawn from the focuser. The wide part of the taper prevents the diagonal from accidentally falling out of the focuser if the set screw loosens up. Eyepieces are secured in the diagonal with a compression ring lock on both the two-inch eyepiece holder and the 1.25-inch eyepiece holder (sold separately).

Item Number: DD03–01CF
Weight: 2.0lb; .90kg
Length: 104.8mm
Width: 60.9mm
Height: 127.0mm

Free Shipping Everyday to Canada!
(Except to Yukon, Northwest Territories, Nunavut, and other areas deemed as "remote" by Canada Post or Purolator)
On orders above $100

Orders are processed: Monday – Friday from 8am – 3:30pm MT

(Public Holidays Excluded)

Order Confirmation: After placing an order, you will receive an order confirmation by e-mail. This means we’ve received your order in our system and have pre-authorized your credit card for the purchase. If your item is back-ordered or otherwise unavailable, we will void the pre-authorization charge and contact you to inform you by e-mail. If your item(s) are available for immediate shipment (within 7 business days unless noted longer on the product page), we will process the charges and submit the order for shipment.

Tracking Numbers will be sent to your email once your order has shipped.

In some cases, we may need to contact you before your order can be shipped. To ensure there is no delay, please respond to any email/phone call from our Customer Service team.

We proudly use the following Shipping Methods and will choose the best available in terms of price and delivery times at the time of shipment.

Price Guarantee Policy:

We want to ensure our customers get the products they need at the best possible price. If you find another online store that offers a lower price than us within one month of your purchase date, please let us know and we will refund your original payment for the difference. 

To request your partial refund simply e-mail us a link to the same product on our competitors website within one month from the date of your order and we will process the credit accordingly.

Our 100% Price Guarantee has some limitations:

  • You must purchase the item from our website before requesting your Price Match Guarantee
  • Promotions such as rebates and buy one, get one free offers are not eligible
  • The item must be in stock on the competitors website
  • The competitor must be an online store, they may not have a retail location
  • The website can not be a discounter or auction website (ie; eBay, overstock, etc..)
  • The competitor must be an Authorized Retailer for the product in question
  • The Price Match Guarantee includes the item price and the shipping charges, it excludes sales tax