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Items 1 - 25 of 28
Apertura 1.25" Carbon Dielectric Diagonal Full View

Apertura 1.25" Carbon Dielectric Mirror Diagonal - D1CF

SKU: APT-D1CF
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 1.25" Barrel
  • Diagonal Size - Telescope Side: 1.25" Barrel
  • Includes Eyepiece Adapter: No, 1.25" Eyepiece Adapter Sold Separately
  • Optics Type and/or Coatings: Dielectric Coatings
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$79.95

Apertura 2" SCT Twist Lock Carbon Dielectric Mirror Diagonal - D2QCFSCT

SKU: APT-D2QCFSCT
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
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$139.95

High Point 2" Dielectric Mirror Diagonal - HPS-D2

SKU: HPS-D2
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
$109.95
Explore Scientific 2" Dielectric Diagonal

Explore Scientific 2" Dielectric Diagonal - DD02-00CF

SKU: EXS-DD02-00CF
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
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$169.99 $129.99

Orion 2" Dielectric Mirror Star Diagonal - 08727

SKU: ORI-08727
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
$129.99

Orion 1.25" Dielectric Mirror Star Diagonal - 08880

SKU: ORI-08880
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 1.25" Barrel
  • Diagonal Size - Telescope Side: 1.25" Barrel
  • Optics Type and/or Coatings: Dielectric Coatings
$99.99
High Point 1.25" Dielectric Mirror Diagonal

High Point 1.25" Dielectric Mirror Diagonal - HPS-D1

SKU: HPS-D1
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 1.25" Barrel
  • Diagonal Size - Telescope Side: 1.25" Barrel
  • Optics Type and/or Coatings: Dielectric Coatings
$69.95

High Point 2" Quartz Dielectric Diagonal - HPS-D2Q

SKU: HPS-D2Q
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings , Quartz Optics
$129.95

High Point 2" SCT Quartz Dielectric Diagonal - D2QSCT

SKU: HPS-D2QSCT
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: SCT Threads
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings , Quartz Optics
$139.95

High Point SCT Dielectric Diagonal - 2" - HPS-D2SCT

SKU: HPS-D2SCT
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: SCT Threads
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
$114.95

William Optics Dura Bright 2" Carbon Dielectric Diagonal - D-DIG2D-C-DB-T

SKU: WYO-D-DIG2D-C-DB-T
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
$139.00

Meade 2" Diagonal with SCT Adapter - 07680

SKU: MEA-07680
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel with SCT Adapter
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
$149.99
Explore Scientific 3" CF Dielectric Diagonal

Explore Scientific 3" Carbon Fiber Dielectric Diagonal - DD03-01CF

SKU: EXS-DD03-01CF
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 3" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: 3" to 2" Adapter Included, 1.25" Adapter Sold Separately
  • Optics Type and/or Coatings: Dielectric Coatings
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$489.99 $399.99
William Optics 1.25" Dielectric Diagonal with Carbon Fiber Side Plates

William Optics 1.25" Dielectric Diagonal W/ Carbon Fiber Plates - D-125D-C-DB

SKU: WYO-D-125D-C-DB
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 1.25" Barrel
  • Diagonal Size - Telescope Side: 1.25" Barrel
  • Optics Type and/or Coatings: Dielectric Coatings
$95.00
Stellarvue 1.25" Enhanced Dielectric Diagonal

Stellarvue 1.25" Enhanced Dielectric Diagonal - D1030

SKU: STV-D1030
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 1.25" Barrel
  • Diagonal Size - Telescope Side: 1.25" Barrel
  • Optics Type and/or Coatings: Dielectric Coatings
$99.00
Orion Twist-Tight Dielectric Mirror Diagonal - 1.25"

Orion 1.25" Twist-Tight Dielectric Mirror Star Diagonal - 40901

SKU: ORI-40901
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 1.25" Barrel
  • Diagonal Size - Telescope Side: 1.25" Barrel
  • Optics Type and/or Coatings: Dielectric Coatings
$119.99
Orion Twist-Tight Dielectric Mirror Diagonal - 2"

Orion 2" Twist-Tight Dielectric Mirror Star Diagonal - 40902

SKU: ORI-40902
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
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$159.99
Stellarvue 2" Dielectric Star Diagonal

Stellarvue 2" Dielectric Carbon Fiber Star Diagonal - D1028CF

SKU: STV-D1028CF
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
$189.00
iOptron 1.25" Dielectric Mirror Star Diagonal

iOptron 1.25" Dielectric Mirror Star Diagonal - 6231

SKU: IOP-6231
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 1.25" Barrel
  • Diagonal Size - Telescope Side: 1.25" Barrel
  • Optics Type and/or Coatings: Dielectric Coatings
$79.00
iOptron 2" Dielectric Star Diagonal

iOptron 2" Dielectric Star Diagonal - 6232

SKU: IOP-6232
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
$110.00
Explore Scientific 2" Dielectric Diagonal

Explore Scientific 2" Dielectric Diagonal - DD02-00CF - Silver Grade Refurb

SKU: EXS-DD02-00CF-SG
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
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$139.99 $104.99

Stellarvue 2" Quartz Dielectric Star Diagonal - D1040Q

SKU: STV-D1040Q
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings , Quartz Optics
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$249.00
Celestron 1.25" Dielectric Star Diagonal with Twist-Lock

Celestron 1.25" Dielectric Star Diagonal with Twist-Lock - 93571

SKU: CEL-93571
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 1.25" Barrel
  • Diagonal Size - Telescope Side: 1.25" Barrel
  • Optics Type and/or Coatings: Dielectric Coatings
$119.95 $114.95
Celestron 2" Dielectric Star Diagonal with Twist-Lock and 1.25" Adapter

Celestron 2" Dielectric Star Diagonal with Twist-Lock - 93573

SKU: CEL-93573
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
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$189.95 $184.95
Apertura 2" Dielectric Star Diagonal

Apertura 2" Dielectric Star Diagonal - A-D2

SKU: APT-A-D2
  • Diagonal Type: Mirror Diagonal
  • Diagonal Size - Eyepiece Side: 2" Barrel
  • Diagonal Size - Telescope Side: 2" Barrel
  • Includes Eyepiece Adapter: Yes, 2" to 1.25"
  • Optics Type and/or Coatings: Dielectric Coatings
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$109.95

High Point Scientific carries the most popular telescope brands among astronomy enthusiasts, including Celestron, Baader Planetarium, Orion, and many more. We also design our own astronomy products under the High Point brand, to give you the best selection of products at the price you’re looking for.


We work directly with manufacturers to give you a wide selection of products from many other brands like Meade, TeleVue, Explore Scientific, Coronado, and iOptron. While we have dedicated many hours researching what telescope brands you - our customers - are looking for, we encourage you to explore up and coming brands on our website such as William Optics, Pentax, SkyWatcher, and Stellarvue.


High Point Scientific offers many of the latest brands to choose from for telescope accessories. Just a few of these brands include AstroZap, ADM Accessories, Losmandy, Takahashi, and JMI. It’s important to make sure you have the correct accessories for your aspirations and budget and our experts are here to make sure you find them.


Astro-imaging is a growing industry, not just for photographers, but for astronomy hobbyists as well. With so many quality, affordable products, it’s easy to see why! Brands like QSI, ZWO, and QHY have designed some of the best astrophotography cameras in the industry, and we have them right here at High Point!

High Point Scientific is rated 4.9/5 based on 1347 reviews