Will this fit into the svbony guide scope? the svbony guide scope is reflected and i would like to have the image flipped upright.

thanks for your question, for SV188P dielectric mirror star diagonal, it can only fit with SV198 Guide scope. here is the link: https://www.amazon.com/dp/B09C8913FZ?ref=myi_title_dp If any, please contact us through Amazon message.

Svbony, is this diagonal actually painted red on the inside as some buyers indicated?

Unless there are two versions of this diagonal just know that the side panels ARE red on the outside AND inside. As some buyers report this could cause a reddish reflection that might cast a red hue onto what is being viewed, particularly brighter objects I would guess. Due to cloudiness, I haven't been able to test that possibility yet. Otherwise it's a nice 99% diagonal.

Does this diagonal have a stop to keep a standard size Barlow tube from colliding with the mirror?

thanks for the question. For the SVBONY SV188P Dielectric Mirror Star Diagonal, there is no blocking thing, the end where the eyepiece or accessories are installed, there is about 45mm long installation space in the inner section, don't worry about touching the lens.

"when use the sv188p with maksutov-cassegrain (mak-cass) or schmidt-cassegrain telescope, you need a special adapter." what is the needed adapter?

thanks for your question. If your telescope has a two-inch interface, you may need a 2-inch to 1.25-inch adapter ring.

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SVBONY SV188P Dielectric Mirror Star Diagonal, 90 Degree Mirror Diagonal, 99% Reflectivity Dielectric Coatings with Brass Compression Rings (1.25 inch)

Product ID: 387957015

Details

Brand
SVBONY
Focus type
Fixed Focus
Model name
FF9171B
Objective lens diameter
31.75
Product dimensions
11.2D x 6.1W x

🌟99% reflectivity dielectric coatings

🔄90° viewing angle for ergonomic comfort

🛠️Brass compression ring for secure eyepiece fit

€ 107.90

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Description

🔭 Elevate your stargazing game with precision and comfort!

LOCK IN STABILITY - Built-in brass compression ring and thumbscrew prevent eyepiece rotation, keeping your view steady during adjustments.
COMFORT MEETS PRECISION - 90-degree diagonal angle transforms your telescope’s light path for effortless, strain-free viewing of celestial wonders.
UNIVERSAL COMPATIBILITY - Fits all standard 1.25-inch eyepieces, filters, and Barlow lenses—upgrade your setup without hassle.
CRYSTAL CLEAR VIEWS EVERY NIGHT - Super-flat dielectric mirror ensures over 99% light reflection for flawless astronomical observations.
TRUSTED BY STARGAZERS WORLDWIDE - Top-rated with 4.8 stars and praised for premium build quality—join the elite community of astronomy pros.

The SVBONY SV188P Dielectric Mirror Star Diagonal features a super-flat mirror with advanced dielectric coatings delivering over 99% reflectivity. Designed for 1.25-inch telescopes, it offers a 90-degree viewing angle for ergonomic comfort and includes a brass compression ring to securely hold eyepieces in place. Ideal for professional and amateur astronomers seeking crystal-clear, stable views of the night sky.

Specifications

ASIN	B08QRY4V97
Additional Features	Dielectric coatings for reduced light loss and 90-degree viewing angle
Best Sellers Rank	#60,390 in Electronics ( See Top 100 in Electronics ) #2 in Telescope Diagonals
Brand	SVBONY
Built-In Media	1X SVBONY SV188P Dielectric Mirror Star Diagonal
Compatible Devices	Eyepieces, Filters
Customer Reviews	4.8 4.8 out of 5 stars (322)
Finderscope	no
Focus Type	Fixed Focus
Item Dimensions D x W x H	11.2D x 6.1W x 8.4H centimeters
Item Weight	0.2 Kilograms
Manufacturer	SVBONY
Manufacturer Part Number	FCAF9171B
Model Name	FF9171B
Model Number	FF9171B
Number of Items	1
Objective Lens Diameter	31.75 Millimeters
Unit Count	1 Count

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€ 107.90

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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2 weeks ago

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