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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SV188P Dielectric Mirror Star Diagonal, 1.25 Inch 90 Degree Mirror Diagonal, 99% Reflectivity Dielectric Coatings with Brass Compression Rings

SV188P Dielectric Mirror Star Diagonal, 1.25 Inch 90 Degree Mirror Diagonal, 99% Reflectivity Dielectric Coatings with Brass Compression Rings

Product ID: 381043030

✨99% reflectivity

🔭1.25" compatibility

🛠️Brass compression rings

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Description

🌌 See the Universe Like Never Before!

UNIVERSAL FIT - Compatible with all standard 1.25" telescopes and accessories.
UNMATCHED CLARITY - Enjoy over 99% reflectivity for stunning astronomical views.
EFFORTLESS ADJUSTMENTS - Brass compression rings ensure your eyepieces stay secure and scratch-free.
ELEVATE YOUR STARGAZING - Experience celestial wonders with a 90-degree viewing angle.
COMFORT MEETS FUNCTIONALITY - Corrects image orientation for a natural viewing experience.

The SVBONY SV188P Dielectric Mirror Star Diagonal is a high-performance 1.25-inch diagonal designed for astronomers seeking superior image quality. With a 90-degree viewing angle and over 99% reflectivity, it enhances your stargazing experience while ensuring compatibility with standard telescopes and accessories. The brass compression rings provide secure adjustments without damaging your eyepieces.

Specifications

ASIN	B08QRY4V97
Best Sellers Rank	#1 in Telescope Diagonals
Customer Reviews	4.8 4.8 out of 5 stars (323)
Date First Available	December 16, 2020
Item Weight	7 ounces
Item model number	FF9171B
Manufacturer	SVBONY
Product Dimensions	4.4 x 3.3 x 2.4 inches

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