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View the Latest Diagonals & Prism Reviews
Item
Submitted By
GSO 2" 90-deg 99% Dielectric Mirror Diagonal for SCTs
Great product and great company
Great product and great company to deal with
Great product and great company to deal with
GSO 2" 90-deg 99% Dielectric Mirror Diagonal for Refractors
Best upgrade since...sliced bread
Now we can see forever!
Now we can see forever!
GSO 2" 90-deg 99% Dielectric Mirror Diagonal for Refractors
GSO 2" 90 Diagonal
Beautiful to use and beautiful look at.
Highly recommended.
AgenaAstro delivers promptly.
Their service is second to none.
Beautiful to use and beautiful look at.
Highly recommended.
AgenaAstro delivers promptly.
Their service is second to none.
GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal with Compression Ring
1.25" GSO Dielectric 90° Diagonal
I have 4 - 2" dielectric William Optics diagonals, but needed a good 1.25" diagonal. So I 'rolled the dice' and got a GSO model. The low price was an added incentive. It arrived quickly, as always with Agena, and I plugged it into my 150mm Maksutov. ...
I have 4 - 2" dielectric William Optics diagonals, but needed a good 1.25" diagonal. So I 'rolled the dice' and got a GSO model. The low price was an added incentive. It arrived quickly, as always with Agena, and I plugged it into my 150mm Maksutov. ...
Dec 20, 2017
GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal with Compression Ring
GSO 1.25" Dielectric diagonal
I got this to update an old Celestron C5. This diagonal is well made, nicely finished and packaged and a bargain at its selling price. I was able to compare it to others I have that are similar, but more expensive. My Tele Vue is clearly better optic...
I got this to update an old Celestron C5. This diagonal is well made, nicely finished and packaged and a bargain at its selling price. I was able to compare it to others I have that are similar, but more expensive. My Tele Vue is clearly better optic...
GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal with Compression Ring
Nice diagonal
Arrived quickly from Agena, this diagonal looks as good as any I have ever had. Appears to be well made, much better than the stock diagonals that are shipped with scopes. Always a great experience buying from Agena Astro, I always look to them first...
Arrived quickly from Agena, this diagonal looks as good as any I have ever had. Appears to be well made, much better than the stock diagonals that are shipped with scopes. Always a great experience buying from Agena Astro, I always look to them first...
Dec 20, 2017
Baader T-2 90° 32mm Prism Diagonal with 1.25" Nosepiece and Eyepiece Holder # PRISM-1...
Very Versatile Diagonal
I've very impressed with the build quality and versatility of this diagonal. I've swapped out the 1-1/4" nosepiece with the Baader Deluxe Short (15mm) SCT Female to T2 Male T-Adapter # T2-21 2408160 for use with my C8.
I've very impressed with the build quality and versatility of this diagonal. I've swapped out the 1-1/4" nosepiece with the Baader Deluxe Short (15mm) SCT Female to T2 Male T-Adapter # T2-21 2408160 for use with my C8.
GSO 1.25" 90-deg Erect Image Amici Prism Diagonal # PD90
Excellent correct image diagonal
Some correct image diagonals, because of the Amici prism corner show a line in the image. Not this diagonal. The image is very clean and sharp with no artifacts to be seen. A very good price too!
Some correct image diagonals, because of the Amici prism corner show a line in the image. Not this diagonal. The image is very clean and sharp with no artifacts to be seen. A very good price too!
William Optics 2" 99% Dura Bright RotoLock Mirror Diagonal for SCTs # D-DIG2D-ROTO-SCT
Great!
Fabulous diagonal! Very high quality.
Fabulous diagonal! Very high quality.
GSO 2" 90-deg 99% Dielectric Mirror Diagonal for Refractors
Agena GSO 2" Dielectric Diagonal
Excellent materials and workmanship - a fine 2" diagonal - worth every penny. No need to pay more. Compression in both 2" and 1.25". Highly recommended.
Excellent materials and workmanship - a fine 2" diagonal - worth every penny. No need to pay more. Compression in both 2" and 1.25". Highly recommended.
Dec 16, 2017
Baader T-2 90° 32mm Prism Diagonal with 1.25" Nosepiece and Eyepiece Holder # PRISM-1...
Great build, fast arrival, SCREWED DOWN TIGHT.
It's a beautiful little diagonal, clear optics, nice to see Jupiter through. Arrived very quickly and well-packed. BUT, the focusing ring was screwed down wicked tight and wouldn't budge at first. I almost reached for pliers after Agena rea...
It's a beautiful little diagonal, clear optics, nice to see Jupiter through. Arrived very quickly and well-packed. BUT, the focusing ring was screwed down wicked tight and wouldn't budge at first. I almost reached for pliers after Agena rea...
William Optics 1.25" 45-deg Erecting Prism Diagonal
William Erecting Prism
A really great purchase. My refractor telescope is now great for terrestrial viewing
A really great purchase. My refractor telescope is now great for terrestrial viewing
GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal with Compression Ring
Buy it
It is a good diagonal mirror for that price. It is good for short tubes in which chromatic aberration with diagonal prisms is seen.
It is a good diagonal mirror for that price. It is good for short tubes in which chromatic aberration with diagonal prisms is seen.
Baader 2" Clicklock 90° Star Diagonal with Carl Zeiss Prism # PRISM-2Z 2456117
Baader 2 inch BBHS StarDiagonal
I purchased one of these several years ago from Agena when it was on sale... it's very well-made ... side-by-side comparison with the TeleVue Everbright 2 inch diagonal, which I think is the best star diagonal available, this Baader diagonal was...
I purchased one of these several years ago from Agena when it was on sale... it's very well-made ... side-by-side comparison with the TeleVue Everbright 2 inch diagonal, which I think is the best star diagonal available, this Baader diagonal was...
Baader T-2 90° Prism Star Diagonal Body # T2-01C 2456005
Great clear view.
Using this to replace stock Celestron diagonal. I am really impressed with Baader Planetarium!
Using this to replace stock Celestron diagonal. I am really impressed with Baader Planetarium!
GSO 2" 90-deg Mirror Diagonal for SCTs
It is what I needed.
It is what I needed.
It is what I needed.
William Optics SCT Thread Adapter for 2" Diagonal
William Optics SCT Thread Adapter for 2" Diagonal
Nicely made, works well, and looks nice, too. Perfect fit on my diagonal and I would recommend this item for anyone looking to switch diagonal nose pieces.
Nicely made, works well, and looks nice, too. Perfect fit on my diagonal and I would recommend this item for anyone looking to switch diagonal nose pieces.
Baader T-2 BBHS Dielectric Mirror Diagonal Body # MAX-1S 2456103
Solid build
As always with Baader products, this diagonal is solidly built and performs as expected.
As always with Baader products, this diagonal is solidly built and performs as expected.
Nov 15, 2017
Baader T-2 90° 32mm Prism Diagonal with 1.25" Nosepiece and Eyepiece Holder # PRISM-1...
Great Product, recommended.
Great Product, recommended.
Great Product, recommended.
Baader 2" 90° Erecting Amici Prism Diagonal with 1.25" Eyepiece Adapter # AMICI-2 2956152
Good erecting prism
Good building quality, good image quality also.
Highly recommended
Good building quality, good image quality also.
Highly recommended
Nov 11, 2017
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