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Explore Scientific

DOB1245-00

Explore Scientific - Generation II - 12-inch Truss Tube Dobsonian Telescope - DOB1245-00

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Description

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 2in 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.

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

Video

Specs

Item Number DOB1245?00
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.

CA Residents: Prop 65 WARNING(S)

Order Confirmation:

As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

Order Shipment:

If your order is stock and we process the charges to your credit card, it will ship within five business days from the date of your order.  We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at support@hyperion-astronomy.com

Damages:

Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery.  If your item(s) do arrived damaged, please send photos support@hyperion-astronomy.com

 and we will process an insurance claim on your behalf.

Cancellations & Refunds:

 If you order has shipped, you (the buyer) will also be responsible for actual return shipping charges. Refunds will only be issued to the original credit card that you use when placing your order.