What would be the ATO max focal length that you would use this guide scope with?

I don’t know what “ATO” is, but I like to have my guide scope about half of the focal length and half of the objective size of my main scope. This “rule” has worked pretty good for me. So, this guide scope is 120mm focal length, which means you’ll be good at least up to 250 mm,( which is the size scope I use this guide scope with), and probably a little bigger. You also have to take into consideration your pixel scale, which is another lengthy subject all together.

I need to know the specification for the objective lens to the focal plane (true backfocus). The 45mm cited is is focus travel, not backfocus.

Dear customer , Thanks for your contact. the objective lens to the focal plane is about 26mm. For accessories;we provide 2 months warranty;within 2 months;you can return for refund or replacement.If you have any other questions about warranty;please contact us freely;we will work with you win to win. If my reply still doesn't answer your question well or you want to know more details about this product,could you please contact us by message on Amazon? Because the customer's message can be seen in the first time on Amazon, and will solve the problem as soon as possible. Once I receive your response, I will try my best to answer your questions. Sincerely look forward to your reply. Best wishes ! Kelly

Why is the video showing an ota on a 20 dslr tripod?!?

Dear customer , Thanks for your contact. It could be connected to the SV503 telescope as a guide mirror. In addition, SV165 could be directly connected to a UNC 1/4-20 tripod and used directly as a small telescope. For accessories;we provide 2 months warranty;within 2 months;you can return for refund or replacement.If you have any other questions about warranty;please contact us freely;we will work with you win to win. If my reply still doesn't answer your question well or you want to know more details about this product,please contact us by message on Amazon. Because the customer's message can be seen in the first time on Amazon, and will solve the problem as soon as possible. Once I receive your response, I will try my best to answer your questions. Sincerely look forward to your reply. Best wishes ! Kelly

I'mlooking for recommendations for mounting to my ota w 90mm outer diameter...any ideas?

Dear customer , Thanks for your contact. You can search for B072BWKC5T at the Amazon front desk. For accessories;we provide 2 months warranty;within 2 months;you can return for refund or replacement.If you have any other questions about warranty;please contact us freely;we will work with you win to win. If my reply still doesn't answer your question well or you want to know more details about this product,could you please contact us by message on Amazon? Because the customer's message can be seen in the first time on Amazon, and will solve the problem as soon as possible. Once I receive your response, I will try my best to answer your questions. Sincerely look forward to your reply. Best wishes ! Kelly

Desertcart Logo

Deliver to Hong Kong

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🔭 Guide your stars like a pro—never miss a celestial moment!

COMPACT POWERHOUSE - Lightweight (342g) and portable design with included dovetail and 1/4” tripod mount—take your astrophotography setup anywhere with confidence.
SEAMLESS COMPATIBILITY - Designed to perfectly fit SV305 Pro, ZWO, QHY, and Orion auto guiding cameras with 1.25in and M42 mounts—plug and guide effortlessly.
PRECISION FOCUS CONTROL - Adjustable 45mm back focus and front focuser ensure lightning-fast target acquisition and razor-sharp star tracking.
CRYSTAL CLEAR VIEWS EVERY TIME - Fully multi-coated 30mm achromatic optics eliminate chromatic aberrations and reflections for stunningly sharp images.
DURABLE SCRATCH FREE MOUNTING - Nylon-tipped thumbscrews and CNC-machined aluminum body deliver premium durability without compromising your gear’s finish.

The SVBONY SV165 Mini Guide Scope is a precision-engineered 30mm f/4 achromatic finder scope optimized for mainstream auto guiding cameras like SV305 Pro, ZWO, QHY, and Orion. Featuring fully multi-coated optics, a 45mm adjustable back focus, and durable CNC-machined aluminum construction, it offers bright, sharp images and easy target acquisition. Its compact, lightweight design with nylon-tipped thumbscrews and dovetail mount ensures scratch-free, versatile use—ideal for both beginner and advanced astrophotographers seeking reliable, portable guiding performance.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

HK$1303

Duties & taxes incl.

Hong Kongstore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

ChatGPT - opens in a new tab Perplexity - opens in a new tab Claude - opens in a new tab Grok - opens in a new tab Google AI - opens in a new tab

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

View all Trustpilot reviews

Brand	SVBONY
Manufacturer	SVBONY
Model	FCAW9125A
Product Dimensions	6.6 x 5.7 x 2.8 cm; 342 Grams
Item model number	FCAW9125A
Power Source	Adapter
Batteries Included	No
Batteries Required	No
Does it contain liquid?	No
Manufacturer	SVBONY
Item Weight	342 g

SVBONY SV165 Mini Guide Scope 30mm F4 Finder Scope for SV305 Pro ZWO QHY Orion Auto Guiding Cameras

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions