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View the Latest Optical Accessory Reviews

Item
Submitted By
Celestron 9x50mm Right Angle Correct Image Illuminated Finder Scope with Bracket # 93781
Celestron 9x50mm Right Angle Correct Image Illuminated Finder Scope with Bracket # 93781
4.0
Very nice finder scope with a less than useful mount for me.
I really liked the finder, and the illuminated reticle on it is very nice. The mount though, it just didn't mount to my scope, and it is very low. I bought a mount that stands off of my scope 3" so I can see through my finder, going from t...
Explore Scientific 1.25
Explore Scientific 1.25" 3x Focal Extender / Barlow # FE03-125
5.0
A Must for Planetary Imaging with shorter focal lengths
So much better for planetary imaging that a barlow. Why? You can place this anywhere in the optical train without complicating your required backfocus.
GSO 8x50mm Right Angle Correct-Image Finder with Bracket
GSO 8x50mm Right Angle Correct-Image Finder with Bracket
5.0
Great value finder.
OEM type finder. Great quality, great value. No sense wasting money on more expensive finders when this one does all you need to do.
GSO 2
GSO 2" 90-deg 99% Quartz Dielectric Mirror Diagonal for SCTs
5.0
Quality Quality Quality
Makes the stock diagonal feel and look like a toy...
GSO 2
GSO 2" 2x ED Barlow Lens # GS22B
5.0
High quality, well constructed barlow. Useful in many ways.
Great value! I can see how this got great reviews. No regrets, this is the one to buy.
Optolong Ultra High Contrast UHC Nebula Filter - 1.25
Optolong Ultra High Contrast UHC Nebula Filter - 1.25"
5.0
Excellent Product
Excellent Product
Telrad Telescope Reflex Finder with Mounting Base # 1001
Telrad Telescope Reflex Finder with Mounting Base # 1001
5.0
Great Service
Shipped quickly and arrived on time.
Agena Synta / Vixen Style Dovetail Mounting Base / Shoe for Finders - For SCT # SCTFURB
Agena Synta / Vixen Style Dovetail Mounting Base / Shoe for Finders - For SCT # SCTFURB
5.0
Fit my C8 very well
Fit my C8 very well used the same screws the original finder came with.
GSO 1.25
GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal with Compression Ring
5.0
Bright
Needed a new better diag than what came with the scope. Tried the GSO and it is every bit as bright as my Televues.
GSO 1.25
GSO 1.25" 90-deg Mirror Star Diagonal for Refractors # GSST
5.0
GSO Star Diagonal 1.25"
Purchased it when it was on sale for $27. What a bargain, well built and high light reflectivity. Agena Astro ships fast and it's free. Top notch service and free shipping. Agena Astro can't be beat. This star diagonal I purchased for $2...
Optolong LRGB Imaging Filter Set - 1.25
Optolong LRGB Imaging Filter Set - 1.25"
5.0
Optolong 2” LRGB filter set
I’m using these filters with my Altair 183m monochrome camera. The filters are installed on a 6 position Orion 2” filter slide. This combination provides excellent images for post processing with small adjustments required in focus between images...
Baader Premium Eyepiece Filter: Yellow, 495nm Longpass - 1.25
Baader Premium Eyepiece Filter: Yellow, 495nm Longpass - 1.25" # FCFY-1 2458301
5.0
Solid Chromatic Aberration Removal
Following the advise of experienced owners of fast acromats, there was a higher preference towards the 495LP over the Fringe Killer to remove CA. I have done basic tests and found the CA to be under control in my G'n'G SW120ST. Star fields ...
DayStar Original Quark Eyepiece Solar Filter for Refractors: H-Alpha Prominence Model # DSZ4P
DayStar Original Quark Eyepiece Solar Filter for Refractors: H-Alpha Prominence Model...
4.0
Great but
Negative point: As the product is shielded and I do not have technical assistance in my country, I would like electrical connection to be stronger. It seems a fragile.
GSO 2
GSO 2" 2x ED Barlow Lens # GS22B
5.0
No Plastic Here
Was surprised by the high quality and all-metal, heavy-duty construction of the slotted 2" casing with it's matched-set 1.25 adapter. Excellent large ED Barlow. I am well pleased with it after use in both my Bresser AR 152L/1200 and Exp Sci...
ZWO 1.25
ZWO 1.25" IR Cut Filter # IRCUT1
5.0
ZWO IR Cut
Works to keep the star bloat down.
Agena Extra M5 Base for Multi Reticle Reflex Finder with Type 0 Bracket
Agena Extra M5 Base for Multi Reticle Reflex Finder with Type 0 Bracket
5.0
William optics style finder base
Works as described.
Agena Synta / Vixen Style Dovetail Mounting Base / Shoe for Finders - M4 Screw for GSO Crayford Focuser # CFURB
Agena Synta / Vixen Style Dovetail Mounting Base / Shoe for Finders - M4 Screw for GSO...
5.0
Agena Synta / Vixen Style Dovetail Mounting Base / Shoe for Finders -
Perfect fit w/no alteration needed to fit an Orion 9x50 RACI finder. Simple installation to GSO focuser - 3 minutes and shoe and finder we're mounted! Quality item at a very reasonable price. Can't beat the shipping! Agena always comes thro...
Baader Double Stacked Solar Continuum Filter - 1.25
Baader Double Stacked Solar Continuum Filter - 1.25" # FSOL-1D 2458392
5.0
Solar Continuum Double Stack
Esse filtro faz o que promete! Já tive um simples antes, mas esse duplo melhora ainda mais o contraste na superfície do Sol, deixando os granulos solares e as células de convecção muito mais fáceis de serem fotografadas. Meu uso é basicamente ...
Optolong City Light Supression / Light Pollution Reduction CLS-CCD Filter - 1.25
Optolong City Light Supression / Light Pollution Reduction CLS-CCD Filter - 1.25"
5.0
CLS-CCD filter
I live in a heavily light-polluted city and this filter has become my go-to imaging filter. A great filter for anyone who deals with city viewing.