Congratulations on your purchase of the Orion Mini 50mm Guide Scope – a “new breed” of simple, compact, and light­ weight guide scope designed for use with the Orion StarShoot AutoGuider, Orion StarShoot Planetary Imager & AutoGuider, or similar, sensitive small-chip CCD cameras. It’s ideal for guiding long-exposure astrophotographs with short to medium focal length telescopes up to 1500mm focal length. Its bright, wide-field optics serve up lots of potential guide stars on your autoguider’s CCD sensor, and it’s small enough to stash in an accessory case!

 

 

 

 

 

Adjustment

 

 

Lock ring

thumbscrews (x3)

 

 

 

 

 

 

Thumbscrews,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

camera

 

 

 

 

 

 

Objective

 

 

 

 

attachment

 

 

 

 

 

 

 

 

 

 

 

 

lens cell

 

O-ring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(not visible)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bracket

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Adapter plate

 

 

 

 

 

 

1.25"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Holder

 

 

Socket head

 

 

 

Dovetail foot

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

screws (x2)

 

 

 

 

 

 

#8-32 Screws

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.5mm

 

Hex nuts

 

 

 

 

 

Allen

 

 

 

 

 

 

wrench

 

 

Dovetail base

 

 

 

 

 

 

 

 

 

 

 

1.25" Parfocal ring

Figure 1. The Mini 50mm Guide Scope and included components

Parts List

1Guide scope optical tube assembly

1Dovetail bracket

1Dovetail base

2#8-32 x 3/8" flat (countersunk) Phillips head screws, and 2 hex nuts

2#8-32 x ½" length flat (countersunk) Phillips head screws

1Adapter plate

1Socket head screw, ¼"-20 x 1"

1Socket head screw, ¼"-20 x 1/2"

1Parfocal ring, 1.25"

1Allen wrench, 1.5mm

Assembly

The Mini Guide Scope comes fully assembled and mounted in the dovetail bracket. Refer to Figure 1 to familiarize yourself with the features and parts of the guide scope.

Mounting the Mini Guide Scope

The Mini 50mm Guide Scope’s mounting bracket has a dovetail foot that fits the Orion dovetail finder scope base included on many Orion telescopes. The guide scope also comes with a separate dovetail base (Orion part #7214), with two #8-32 x 3/8" flat Phillips-head screws and two hex nuts, for custom installations.

To mount the Mini 50mm Guide Scope on a dovetail plate such as Orion’s Wide or Narrow Universal mounting plates, or similar plates produced under other brands, we’ve included an adapter plate that makes it easy. The Mini Guide Scope can then be piggybacked on top of your main instrument’s tube rings, or on a side-by- side saddle plate, for autoguiding.

On the adapter plate there are three threaded holes. The two outer ones are for attaching the dovetail base to the adapter plate, using the two included #8-32 x ½" length flat (countersunk) Phillips head screws. (These are the longer of the four #8-32 screws.) Once the dovetail base is securely attached, you can mount the adapter plate onto a dovetail mounting bar or plate by inserting one of the supplied 1/4"-20 socket head screws up through an unthreaded hole or slot in the dovetail plate and into the ¼"-20 hole in the center of the adapter plate. Tighten with a 3/16" Allen wrench (user supplied). We have provided two different socket head screws for your convenience, one is ½" long, the other 1" long. Choose the one that best fits your mounting bar or plate.

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Orion 8891 instruction manual Parts List, Assembly, Mounting the Mini Guide Scope
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8891 specifications

The Orion 8891 represents a significant advancement in the realm of technological innovation and user-centric design. As a premier product in its category, the Orion 8891 combines a range of outstanding features and advanced technologies tailored to meet the demands of today's users.

At the heart of the Orion 8891 is its robust processing capability. Powered by a next-generation multi-core processor, it delivers lightning-fast performance, ensuring seamless multitasking and efficient operation of even the most resource-intensive applications. This processor is coupled with an optimized thermal management system that enhances performance stability while maintaining an energy-efficient footprint.

The display is another standout feature of the Orion 8891. Equipped with a high-resolution display that boasts vibrant colors and deep contrasts, this unit offers an immersive viewing experience. The screen is designed with eye-care technology, reducing blue light emission and helping to minimize eye strain during extended usage. This makes it an ideal choice for both professional and recreational activities.

Connectivity options on the Orion 8891 are extensive. It supports the latest wireless technologies, including Wi-Fi 6 and Bluetooth 5.0, ensuring rapid data transfer and strong connections. Additionally, the incorporation of multiple USB ports, including USB-C, allows for versatile connectivity with a host of devices and peripherals.

Security features have not been overlooked in the Orion 8891. It includes advanced biometric authentication technology, such as a fingerprint scanner, which provides users with enhanced security and peace of mind. Furthermore, it has built-in encryption protocols that protect sensitive data from unauthorized access.

The design of the Orion 8891 is both sleek and functional. With its lightweight chassis and ergonomic design, users can easily transport it without sacrificing durability. The device is built with premium materials, offering both aesthetics and resilience.

In terms of battery life, the Orion 8891 excels, with a high-capacity battery that provides extended usage on a single charge. This is complemented by fast-charging technology, allowing users to quickly recharge and return to their tasks without prolonged downtime.

Overall, the Orion 8891 stands out due to its powerful performance, cutting-edge features, and thoughtful design elements, making it a compelling choice for professionals, gamers, and everyday users alike.
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