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View the Latest Optical Accessory Reviews

Item
Submitted By
GSO 1.25
GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal with Compression Ring
5.0
excelent upgrade
Finish and quality are very good,, just waiting for a clear night in cloudy Florida to enjoy it
GSO 1.25
GSO 1.25" 45-deg Erect Image Amici Prism Diagonal # PD45
5.0
Nice
It gives the result what you expected.
Celestron Star Pointer Pro Unity (1x) Finder # 51635
Celestron Star Pointer Pro Unity (1x) Finder # 51635
5.0
Great service!
Agenda customer service top notch! First product I received had a reticle display defect. Scott and company did not hesitate to contact Celestron and get a new one out to me ASAP. New finder works perfectly!
William Optics Red Dot Finder with Quick Release Bracket # M-RDF-P
William Optics Red Dot Finder with Quick Release Bracket # M-RDF-P
5.0
Way better than a finderscope
Way better than a finderscope is
Celestron Large Base for StarSense / Finderscope # 51710-10
Celestron Large Base for StarSense / Finderscope # 51710-10
5.0
Well made
Used on a Celestron C8 for the Celestron 50mm right angle finder. Works perfectly.
Explore Scientific 1.25
Explore Scientific 1.25" 5x Focal Extender / Barlow # FE05-125
5.0
Makes a real difference
Bought this for a Explore Scientific ED102-FCD100 for the purposes of astrophotography and specifically planets such as Saturn & Jupiter. A major difference in imaging over a 2x barlow that has been used in the past. Image is magnified and still ...
Meade Series 5000 2
Meade Series 5000 2" Enhanced Dielectric Diagonal w/ SCT Adapter # 07680
2.0
Poorly constructed
I bought this in September 2018 to use with my Tel-Vue 2" eyepieces. The barrel eyepiece receiver on the diagonal came loose and would wobble making it less secure to hold any eyepiece in place. I bought this setup to make it easier to move the ...
GSO 0.965
GSO 0.965"/1.25" 90-deg Hybrid Mirror Star Diagonal
5.0
Performs very well in all
Performs very well in all my 60's refractors. Sturdy, too!
GSO 1.25
GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal with Compression Ring
5.0
Well made , accepts filters
Well made , accepts filters on telescope end, holds heavier eyepieces securely.
BST 1.25
BST 1.25" Variable Transmission Polarizing Filter
5.0
1.25" Variable Polarizer
This is great for lunar viewing. I can vary the polarity for the best contrast and brightness for viewing specific features and areas of the moon. I generally use half of my 2" polarizer on the front of the diagonal, and half of the 1.25" ...
BST 2
BST 2" Variable Transmission Polarizing Filter
5.0
2" Variable Polarizer
This is great for lunar viewing. I can vary the polarity for the best contrast and brightness for viewing specific features and areas of the moon. I had been placing half on the front of the diagonal, and half on the EP. The last time I used it, I fo...
Meade Series 4000 #126 1.25
Meade Series 4000 #126 1.25" 2x Short-Focus Barlow Lens # 07273
4.0
Better than a Telescope's Pack-In
This is much better in build and optical quality than what you would get included in a Telecope Package. Definitely replace the one you got with your scope with this one.
GSO 2
GSO 2" 2x ED Barlow Lens # GS22B
4.0
More than adequate
For cheap , Comes to focus with all my eyepieces in both of my short focus Newtonians.

No complaints. using with pans and naglers
ZWO 1.25
ZWO 1.25" IR Cut Filter # IRCUT1
5.0
UV/IR 2”
Works as advertised!
Riser for Telrad Reflex Finder - 2
Riser for Telrad Reflex Finder - 2" Riser # 2102
5.0
Telrad-ier
Riser definitely improved utility - recommended!
Tele Vue DIOPTRX Astigmatism Corrector - 3.50 # DRX-0350
Tele Vue DIOPTRX Astigmatism Corrector - 3.50 # DRX-0350
5.0
A real asset for those of us with astigmatism
I was having trouble viewing with my eyeglasses, but without them it was totally pointless. Someone recommended the Tele Vue Dioptrx. I compared my prescription to their options and decided the strongest (3.5) correction was probably best. I'm a...
GSO 2
GSO 2" 2x ED Barlow Lens # GS22B
5.0
Excellent barlow
Nice price for a quality 2" Barlow. I like the fact I can unscrew the lens from the Barlow tube and screw it into my 2" eyepieces. Keep up the great work!
Optolong Ultra High Contrast UHC Nebula Filter - 1.25
Optolong Ultra High Contrast UHC Nebula Filter - 1.25"
5.0
Very Pleased
I purchased this Optolong broadband type of UHC for my ST-80 clone for visual use as I was concerned that a narrowband UHC- which I use on my larger telescopes-would dim the image too much due to the small aperture. I was quite pleased with the resul...
* Cosmetic Blem * Antares 2-Ring 50mm Finder Bracket with Vixen/Synta Style Dovetail Base # F50FB
* Cosmetic Blem * Antares 2-Ring 50mm Finder Bracket with Vixen/Synta Style Dovetail...
5.0
Finder holder
Great item. Even though the description says “blemish” I can’t find anything wrong with it. Be aware that this is a short holder and that it not give enough clearance over the main OTA.