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Diagonals - 167 - Super Savings! Save up to 33%


Super Savings! Up to 33% off on Diagonals at Back Country Imaging. Top brands include Cassini, Kenko, Vixen Optics, Unknown, Homyl, FidgetFidget, Astromania, SVBONY, AstroStreet, & Orion. Hurry! Limited time offers. Offers valid only while supplies last.



Cassini .965-inch Mirror Diagonal
Cassini .965-inch Mirror Diagonal
By Cassini
In Stock
$49.99

mpn: DM965, ean: 0859773004391,

Cassini Mirror diagonals increase the viewing comfort and usability of Refractor Telescopes. True astronomical telescopes will produce an upside down image. No erecting lenses, mirrors, or prisms are added. Having these elements in the telescope can ...


Kenko 421109 MILTOL PL10mm KF-EP-PL10 Zenith Mirror Kit (Black)
Kenko 421109 MILTOL PL10mm KF-EP-PL10 Zenith Mirror Kit (Black)
By Kenko
In Stock
$71.20

mpn: 421109, ean: 4961607421109,

Zenith Mirror SetsPlossl eyepiece 10mm. Eyepiece holder. Zenith Mirror. ...


Diagonal Prism
Diagonal Prism
By Vixen Optics
In Stock
$95.95

mpn: 3675-04, ean: 4955295367504,

3675 Features: -Accessory Type:Mounts. Dimensions: -Overall Product Weight:0.34...


MagiDeal 2'' Eyepiece 1.25'' Telescope Erecting Prism Diagonal Zenith Mirror 90 Degree Comfortable Viewing Position
MagiDeal 2" Eyepiece 1.25" Telescope Erecting Prism Diagonal Zenith Mirror 90 Degree Comfortable Viewing Position
By Unknown
In Stock
$179.97
$119.98
You Save: 33%

mpn: 0516000430006UKA, ean: 0706612477253,

4.9 out of 5 stars with 15 reviews
You will find what you want in Sports & Outdoors, Home & Kitchen, Beauty, Clothing, Health & Household, Tools & Improvement, Automotive Parts etc.Description: - 2" Eyepiece 1.25" Astronomy Telescope Erecting Prism Diagonal Mirror 90 Degree. - A more ...


Homyl Telescope Diagonal Prism for Orion Nikon Canon Astronomy Erecting Mirror High-definition Universal
Homyl Telescope Diagonal Prism for Orion Nikon Canon Astronomy Erecting Mirror High-definition Universal
By Homyl
In Stock
$161.17
$111.58
You Save: 31%

mpn: 051600043000662154264, ean: 0706612618465,

4.2 out of 5 stars with 20 reviews
Description: - 2" Eyepiece 1.25" Astronomy Telescope Erecting Prism Diagonal Mirror 90 Degree. - A more comfortable viewing position and clear image. - Fully Coated:high quality optical glass for maximum brightness. - High Reflectivity:built-in h...


MagiDeal 1.25'' Telescope Erecting Prism Eyepiece Universal Star Diagonal Mirror 45 Degree Slope Design
MagiDeal 1.25'' Telescope Erecting Prism Eyepiece Universal Star Diagonal Mirror 45 Degree Slope Design
By Unknown
In Stock
$50.97
$33.98
You Save: 33%

mpn: e61d41f91c4723b202034593ffe30af2, ean: 0707230631805,

4.4 out of 5 stars with 42 reviews
You will find what you want in Sports & Outdoors, Home & Kitchen, Beauty, Clothing, Health & Household, Tools & Improvement, Automotive Parts etc.Description: - 1.25"/31.7mm Astronomy Telescope Erecting Prism Diagonal Mirror 45 Degree. - Fully Coated...


Homyl 1.25'' Diagonal Prism for Newtonian Reflective Astronomy Telescope Mirror 2X Magnification Maximum Light Transmission
Homyl 1.25" Diagonal Prism for Newtonian Reflective Astronomy Telescope Mirror 2X Magnification Maximum Light Transmission
By Homyl
In Stock
$114.37
$79.18
You Save: 31%

mpn: f408f8b55cdb8182437985de21543b4a, ean: 0705220462620,

4.6 out of 5 stars with 35 reviews
Description: - For Newtonian Reflecting Telescope Eyepiece Erecting Prism 1.25"/31.7mm Star Diagonal Mirror. - High Refractivity:built-in high-definition refractive prism, to create a more comfortable viewing position and clear image. - 2X Magnific...


MagiDeal For Newtonian Reflecting Telescope Erecting Roof Prism Barlow Lens 2X High Power 1.25'' Interface Optical Glass
MagiDeal For Newtonian Reflecting Telescope Erecting Roof Prism Barlow Lens 2X High Power 1.25" Interface Optical Glass
By Unknown
In Stock
$128.97
$85.98
You Save: 33%

mpn: STK0177003464, ean: 0705220418375,

4.4 out of 5 stars with 49 reviews
You will find what you want in Sports & Outdoors, Home & Kitchen, Beauty, Clothing, Health & Household, Tools & Improvement, Automotive Parts etc.Description: - For Newtonian Reflecting Telescope Eyepiece Erecting Prism 1.25"/31.7mm Star Diagonal Mir...


Homyl For Newtonian Reflecting Astronomical Telescope Erecting Prism 1.5X Multi-Coated Lens 1.25'' /31.7mm
Homyl For Newtonian Reflecting Astronomical Telescope Erecting Prism 1.5X Multi-Coated Lens 1.25'' /31.7mm
By Homyl
In Stock
$116.97
$80.98
You Save: 31%

mpn: f87ce36e451e0df7b444bc400302a1fc, ean: 0712758458650,

4.8 out of 5 stars with 42 reviews
Description: - This image rectifier universal erecting prism is a new roof design for Newtonian reflector telescopes. - 1.5X Magnification Barlow Lens Effect:Rectifies the image and magnifies the image by 1.5x. - High Refractivity:built-in high-d...


FidgetFidget LED Side Mirror Turn Signal Indicator Light 1 Pair2007-16
FidgetFidget LED Side Mirror Turn Signal Indicator Light 1 Pair2007-16
By FidgetFidget
In Stock
$48.79

mpn: KumorefunW-DHARSH-87-BBB043B340, ean: 6954236536946,

Specification:100% brand new and high qualityType: LED Side Mirror Turn Signal Indicator Light1pair including Left and RightFitment: for Chevrolet Captiva 2007-2016(ONLY Suitable for the vehicle which Driver Side is on the Left!)Voltage: 12VEasy to i...


MagiDeal 1.5X Erecting Prism Multi-Coated Lens for 1.25 Newtonian Reflector Telescope Image Rectifier
MagiDeal 1.5X Erecting Prism Multi-Coated Lens for 1.25 Newtonian Reflector Telescope Image Rectifier
By Unknown
In Stock
$131.97
$87.98
You Save: 33%

mpn: STK0177003585, ean: 0712758295613,

4.6 out of 5 stars with 35 reviews
You will find what you want in Sports & Outdoors, Home & Kitchen, Beauty, Clothing, Health & Household, Tools & Improvement, Automotive Parts etc.Description: - This image rectifier universal erecting prism is a new roof design for Newtonian reflecto...


1.25'' Format Mirror Diagonal
1.25" Format Mirror Diagonal
By Cassini
In Stock
$18.95
$12.99
You Save: 31%

mpn: DM125, ean: 0859773004407,

4.9 out of 5 stars with 19 reviews
Cassini Mirror diagonals increase the viewing comfort and usability of Refractor Telescopes. True astronomical telescopes will produce an upside down image. No erecting lenses, mirrors, or prisms are added. Having these elements in the telescope can ...


Astromania 1.25'' 90-degree Erecting Prism optical Prism inside rather than a mirror which makes your image clear and sharp
Astromania 1.25" 90-degree Erecting Prism optical Prism inside rather than a mirror which makes your image clear and sharp
By Astromania
In Stock
$32.99

mpn: SKU_AM_EP1D90, ean: 6970019291093,

Astromania 1.25" 90-degree Erecting Prism. This is an economical 1.25" 90-deg prism diagonal for astronomical telescopes and spotting scopes. With this 90-degree erecting prism transform your telescope into a telescope for nature observation. This is...


SVBONY 1.25'' 45 Degree Erecting Image Diagonal Prism Zenith Mirror for Refractor Catadioptric Telescope and Astronomical Telescope Eyepiece
SVBONY 1.25" 45 Degree Erecting Image Diagonal Prism Zenith Mirror for Refractor Catadioptric Telescope and Astronomical Telescope Eyepiece
By SVBONY
In Stock
$19.99

mpn: 4331908552, ean: 0714559073797,

SVBONY 45 degree erecting image diagonal prism for telescope and any standard 1.25" eyepieceIt's easily correct upside down and left right reversed image;makes it easier to navigate the day and night skies with telescope in correct positionYou can in...


AstroStreet 1.25-Inch Astrophotography Flip Mirror Diagonal
AstroStreet 1.25-Inch Astrophotography Flip Mirror Diagonal
By AstroStreet
In Stock
$99.00

mpn: 462204, ean: 4573272462204,

The Star Gear Original Flip Mirror makes framing and focusing celestial objects for CCD astrophotography as easy as flipping a helicoid![Weight] approximately 280g[Accessories] wrench for adjustment, boxThe Star Gear Original Flip Mirror makes framin...


Astromania 1.25'' 45-degree Diagonal Prism optical Prism inside rather than a mirror which makes your image clear and sharp
Astromania 1.25" 45-degree Diagonal Prism optical Prism inside rather than a mirror which makes your image clear and sharp
By Astromania
In Stock
$27.99

mpn: SKU_AM_DP1D45, ean: 6970019291079,

Whether it's the Moon, Jupiter or a beautiful nebula - in order to enjoy observing at the telescope you should always be comfortable. In many telescopes, that is only possible by using a star diagonal - which directs the image upwards by 45.This Astr...


SVBONY 1.25'' Diagonal Mirror 45 Degree Diagonal Prism Eyepiece Combined with 25mm Eyepiece for Refractor Maksutov Cassegrain telescope
SVBONY 1.25" Diagonal Mirror 45 Degree Diagonal Prism Eyepiece Combined with 25mm Eyepiece for Refractor Maksutov Cassegrain telescope
By SVBONY
In Stock
$29.99

mpn: EP125, ean: 0609378745553,

Make any refractor telescope or Maksutov-Cassegrain telescope into high-performance;SVBONY 45 degree erecting image is a good choice Views through 45-deg diagonal mirror the images appears right-side-up and correct left-to-right;making it ideal for f...


Orion 8763 1.25-Inch Prism Star Telescope Diagonal
Orion 8763 1.25-Inch Prism Star Telescope Diagonal
By Orion
In Stock
$42.01

mpn: 8763, ean: 0759270087630,

This precision 90-degree star diagonal for telescopes features fully coated prisms to deliver superior image fidelity. The prism diagonal features a machined aluminum eyepiece holder and a chrome-plated metal barrel that's conveniently threaded for 1...


Orion 8880 1.25-Inch Dielectric Mirror Star Diagonal
Orion 8880 1.25-Inch Dielectric Mirror Star Diagonal
By Orion
In Stock
$97.70

mpn: 8880, ean: 0759270088804,

The Orion 1.25" Dielectric Mirror Star Diagonal is an ideal choice for refractor and Cassegrain telescope owners who wish to obtain the brightest views possible while using a diagonal. This high-quality mirror diagonal features sophisticated, lab-tes...


Astromania 1.25'' 90-degree Diagonal Mirror - More comfortable viewing orientation as you observe from above, filter thread for any 1.25'' filter and accepts standard 1.25'' eyepieces
Astromania 1.25" 90-degree Diagonal Mirror - More comfortable viewing orientation as you observe from above, filter thread for any 1.25" filter and accepts standard 1.25" eyepieces
By Astromania
In Stock
$21.99

mpn: SKU_AM_DM1D90, ean: 6970019291086,

Whether it's the Moon, Jupiter or a beautiful nebula - in order to enjoy observing at the telescope you should always be comfortable. In many telescopes, that is only possible by using a star diagonal - which directs the image upwards by 90.This Astr...



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