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Explore Scientific Generation II 12 inch f/5 Truss Tube Dobsonian Telescope

Explore Scientific Generation II 12 inch f/5 Truss Tube Dobsonian Telescope

Regular price $1,999.99
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  • Visit our About Page to learn more

This is a Generation II telescope. All updates have been performed on this telescope. No telescope type has changed the hobby quite as much as the Dobsonian. Before the introduction of the Dobsonian by John Dobson, the vast majority of amateur telescopes consisted of small telescopes with primitive mechanics - barely enough to see the polar caps of Mars or the rings of Saturn. Larger telescopes, such as the Schmidt-Cassegrain were reserved for the wealthy. The ingenious combination of simple yet effective mechanisms with the greatest possible opening gives the Dobsonian telescope a unique triumphant march around the world. Nowhere do you get as much light for your money like a good Dobson. Disassembly of the scope without tools ensures a trouble-free transport of this great scope even in small cars. The entire structure has been optimized for maximum stiffness with minimal weight. The combination of high altitude bearings with optimized aluminum structures allows fine adjustment flows at high magnifications.

The ideal workhorse for the deep sky observers. A 305mm mirror collects more than 1,800 times as much light as the naked eye. Details on planets and deep sky objects will be visible even for inexperienced observers. Bright star clusters are resolved to the core, and the sight of the terminator on the moon is an unforgettable experience.

Includes 2" focuser with helical gearing and 10:1 reduction; LED Red Dot Finder, collimation assist tool; soft light baffle and two radial main mirror fan for fast temperature equilibrium. AA Battery Pack for fans not included.

The scope is ready for the use with our optional coma corrector.

Video

Specs

Item Number DOB1245–01
f/ratio f/5
Focal length 1,525 mm
Primary mirror diameter 35 cm
Secondary obstruction 24%
Mirror cell support points 9
Truss pole length 88 cm
Truss pole diameter 20 mm
Secondary cage assembly diameter 38 cm OD
Secondary cage assembly weight 6.5 pounds
Secondary cage assembly height 17 cm
Mirror box/rocker box height 42.5 cm
Mirror box weight * 50 pounds
Height to center of eyepiece at zenith 142.24 cm
Theoretical limiting stellar magnitude 0.38 arc sec
Theoretical Rayleigh limit 0.45 arc sec
Theoretical limiting magnitude 15.11 mag
Theoretical maximum magnification 600x
* Mirror weight can vary because of the manufacturing process; these values are approximate

Warranty

Limited Warranty is one year, which converts to the Explore STAR Transferrable Product Warranty when product is registered within 60 days of purchase. Click Here to register.

Manual

To download printable PDF manual Click Here

CA Residents: Prop 65 WARNING(S)

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    • A tracking number will be provided when the manufacturer ships out the items. Please allow up to 5 business days to be provided with a tracking number

      30-Day Return Policy: no postage, no restocking fee, no worries!

      Astraeus Optics will cover shipping fees as well as any restocking fee that the manufacturer enforces.


      To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. Custom made items are not eligible for returns or refunds.

      There are certain situations where only partial refunds are granted: (if applicable)

      • Any item not in its original condition, is damaged or missing parts for reasons not due to our error.
      • Any item that is returned more than 30 days after delivery


      You can request a refund by Contacting Us.
      We will credit you for the total purchase price upon the receipt of your return. Products returned under this policy are eligible for a refund to the original method of payment.


      Defective Product Returns

      We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at support@astraeusoptics.com


      Refunds

      We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
      If more than 15 business days have passed since we’ve approved your return, please contact us at support@astraeusoptics.com

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