These all show optic viewers, can they be connected to tablets / smart phones etc.?

Yea, you can just have a camera directly hooked up to the scope (without using an eye piece) and then have the camera hooked up to a laptop or tablet or w/e.

Will this telescope track an object as it moves across the sky? I'm wanting to do 3-5 minute exposures continually for 3+ hours

Yes it will track. Not sure if the tracking is smooth enough for 3 to 5 minute exposures. I have had mixed success with 30 second exposures. The altitude and azimuth motors sometimes seem to go in a step function mode. All in all I am pretty happy with the scope but if I had to do it over again I would get an 8” on an equatorial mount. It would be lighter, more portable, easier to set up on a wet uneven lawn and more accurate tracking

How powerful are the motors on the sides of the tube for tracking purposes? does camera/smartphone weight move it easily?

I noticed that I can generally have exposures of up to 30 seconds or maybe even a minute before blurred lines become an issue, depending on the location of an object. And this is with a Nikon D5100

how can one use a projector to show many people with sky watcher telescope?

use a usb telescope camera. send to laptop computer. and then use display clone from the laptop computer output HDMI to the HDMI input port of the projector

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SkyWatcher Flextube 300 SynScan Dobsonian 12-inch Collapsible Computerized GoTo Large Aperture Telescope (S11820)

Product ID: 15865731

Details

Brand
Sky-Watcher
Eye Piece Lens Description
Plossl
Finderscope
Reflex
Focus Type
Auto Focus
Model Name
Sky-Watcher
Objective Lens Diameter
30.5

📱Built-in WiFi smartphone control

🔭12-inch large aperture

🛠️All-metal precision gearing

Description

🌌 Unlock the Universe: Big Aperture Meets Smart Tech for Next-Level Stargazing

STARGAZE LIKE A PRO - 12-inch 94% reflective borosilicate mirrors deliver ultra-bright, crystal-clear views of deep space.
ROCK SOLID PRECISION - All-metal gearing with dual DC servo motors ensures smooth, accurate automated tracking all night long.
SMART SKY NAVIGATION - Built-in WiFi and SynScan controller access 42,000+ celestial objects with one-touch GoTo precision.
EFFORTLESS PORTABILITY - Innovative collapsible tube design shrinks by 36% for easy transport without losing collimation.
COMPLETE READY TO USE KIT - Includes 2 eyepieces, 9x50 finder, and Crayford focuser—everything you need to start exploring immediately.

The SkyWatcher Flextube 300 SynScan Dobsonian is a 12-inch large-aperture telescope featuring a unique collapsible optical tube for portability, built-in WiFi for smartphone control, and an advanced computerized GoTo system with a 42,000+ object database. Its fully multi-coated borosilicate mirrors offer 94% reflectivity, while all-metal gearing ensures precise automated tracking. This complete package includes premium eyepieces and a finder scope, making it ideal for both serious astronomers and ambitious beginners seeking a powerful yet portable stargazing experience.

Specifications

Additional Features	Built-in WiFi
Asin	B00Z4HVMHO
Best Sellers Rank	#995 in Camera & Photo Products (See Top 100 in Camera & Photo Products) #102 in Telescope Refractors
Brand	Sky-Watcher
Built In Media	10mm Plossl, 25mm Plossl, 9x50 Finder
Coating	Fully multi-coated pyrex mirrors
Compatible Devices	Smartphone, Tablet
Customer Reviews	3.8 3.8 out of 5 stars (62) 3.8 out of 5 stars
Eye Piece Lens Description	Plossl
Finderscope	Reflex
Focal Length Description	1500 millimeters
Focus Type	Auto Focus
Global Trade Identification Number	00050234118200
Item Dimensions D X W X H	42"D x 28"W x 21"H
Item Weight	13.7 pounds
Manufacturer	Sky-Watcher
Manufacturer Part Number	S11820
Model Name	Sky-Watcher GoTo Collapsible Dobsonian 12" (305 mm)
Model Number	S11820
Mount	Altazimuth Mount
Number Of Items	1
Objective Lens Diameter	30.5 centimeters
Optical Tube Length	7 centimeters
Optical Tube Length Measurement	7 centimeters
Power Source	Adapter
Upc	050234118200
Warranty Description	2 Year
Zoom Ratio	12

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