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Explore Scientific Truss Tube Dobsonian Telescopes
DANGER!
Never use a telescope for solar observing without a special filter! Immediate permanent damage to your eyes will occur
as soon as you are pointing the telescope at or near the sun. Since eye damage will occur faster than your eye lid
closing reflex and it is very often painless you will react too slow – and the permanent eye damage will already have
taken place. Never point your telescope or the finder scope at or near the sun. Never look though your telescope while
it is moving. Never leave your telescope alone during the daytime without covering the main mirror. Realize that even
skew sun rays can be concentrated by the mirror and cause burns in the vicinity of the telescope, eye damage and fire.
During a observation children have to be supervised at all times.
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Summary of Contents for Explore Scientific Truss Tube Dobsonian Telescopes
- Page 1 User Manual Explore Scientific Truss Tube Dobsonian Telescopes DANGER! Never use a telescope for solar observing without a special filter! Immediate permanent damage to your eyes will occur as soon as you are pointing the telescope at or near the sun. Since eye damage will occur faster than your eye lid closing reflex and it is very often painless you will react too slow –...
- Page 2 Accessory Explore Scientific service All Explore Scientific telescopes and telescope accessories are subject to constant technical improvement. Minor changes of product specifications that happen during the improvement of the product are subject to change without notice. Please keep this manual for future reference and do not throw it away.
- Page 3 Figure 1 Figure 1: Telescope parts overview 1. Focusser with 10:1 reduction 2. Secondary cage unit with secondary mirror 3. Collimation-tool for the main mirror 4. Trusses 5. Altitude wheels 6. Rockerbox 7. Lid mirror box 8. Mirror box 9. Red dot finder...
- Page 4 Unboxing and checking contents When you open the box you should see the following picture (figure 2): Figure 2 The trusses are already assembled in four pairs. At the bottom of the picture you will notice the collimation tool that will help you collimating the main mirror of the telescope.
- Page 5 Figure Now you can see two boxes – on the left side there ist he box that contains the mirror box and there ist he box that contains the rocker box to the right. On the outer left you can see one of the altitude wheels, the stray light cover for the secondary cage is visible in the upper part of the box.
- Page 6 Inside the mirror box you will see a foam insert that contains some small parts and the red dot finder. This foam insert also serves as a transport securing device for the main mirror. It also gives you the opportunity to store/transport eyepieces or accessories.
- Page 7 However – due to the fast optical system of the telescope and the sophisticated collimation unit that is unique in the Explore Scientific dobsonians we will discuss this in detail. Do not get repelled by the length of the description –...
- Page 8 (with the eyepiece removed). If the telescope is collimated the astronomer should see the concentric images of his eye, the secondary mirror, the main mirror and the focuser. However, your Explore Scientific dobsonian has a much faster f-ratio. For this reason the secondary mirror has to be shifted from its centered position in two directions –...
- Page 9 one of the collimation screws is doing. When you have centered all images as in figure 7 the rough collimation of your telescope is finished. Fine Collimation During fine collimation we watch Polaris with high magnification. Please take care that the telescope has time to adapt to the ambient temperature before starting collimation –...
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Page 10: Aligning The Viewfinder
Using your Dobsonian Your Explore Scientific dobsonian is a optical precision instrument. Keep that in mind and use the telescope with care. Damage that is due to improper handling is not covered in the warranty. Try to avoid exposing your telescope to vibrations – this may cause the telescope to loose collimation. - Page 11 During their orbit around the sun the planets are continuously changing their position on the sky. You can find the actual position of the planets in astronomy circulars and soon on the information center of the Explore Scientific homepage. The following...
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Page 12: Calculating Magnification
Tipps and Tricks Marking with luminous paint: As noted above in the section about assembly it is very helpful to mark the positions oft he altitude wheels and the trusses. This helps assembling the telescope at night, and keeps collimation issues at a minimum. There are only a few things that are as frustrating as loosing screws in the grass –... - Page 13 Specifications 10“ Model Tube: Open truss design Upper tube ring: Metal tubing, incl. secondary spider and holder, plus focuser and truss connectors. Mirror box: with main mirror and cell, fans and truss connectors Trusses: Powder coated aluminum with connectors. Secondary spider: 4-arm, steel Main mirror: 10”...
- Page 14 The Explore Scientific nebula filters come with a individual test protocol – so you can be sure to get excellent filters. The portfolio of Explore Scientific accessories is constantly improved –...
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Page 15: Service And Maintenance
General Your Explore Scientific truss dobsonian is a precision instrument that will provide many years of fun. When you are treating this telescope with the same care as for example a expensive camera, it is very unlikely that you will ever need to return it for service or maintenance.. -
Page 16: Warranty
Serial-#.: ..............................Problem description: ..........................Name: ................................. Postal code / City: ............................Street: ................................. Telephone: ..............................Date of Purchase: ............................Signature: ..............................Explore Scientific GmbH Dieselstr. 5 · D - 85748 Garching-Hochbrück service@explorescientific.de www.explorescientific.de Irrtümer und technische Änderungen vorbehalten! ANL01169XXENG0214EXPLORE...
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