Orion StarBlast 4.5 Instruction Manual

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Summary of Contents:

[Page 1] Orion StarBlast 4.5

MEO Central Library (757) 385-0150 and the Library Telescope Program of the Back Bay Amateur Astronomers WARNING: Never look directly at the Sun through this telescope or its finder scope — even for an inst...

[Page 2] Orion StarBlast 4.5

Introduction The BBAA is a 501(c)(3) non-profit scientific and educational organization dedicated to “Bringing Astronomy to the People of Hampton Roads.” Founded on December 14, 1978, we are a group of amateur astronomers drawn together by a co...

[Page 3] Orion StarBlast 4.5

Telescope Parts 1) Eyepiece (Zoom 8 to 24 mm) 2) EZ Finder with AA battery box (See picture below) 3) Telescope tube 4) Focuser (See picture below) 5) Tube Clamp 6) Altitude Clamp 7) Mirror Assembly 8) Support 9) Handle 10) Eyepiece rack (removed) 1...

[Page 4] Orion StarBlast 4.5

4 Focuser 15) Focus wheels 16) Eyepiece securing screws (Don’t attempt to adjust) EZ Finder II ...

[Page 5] Orion StarBlast 4.5

Transporting the Telescope The easiest way to carry the scope is to use the handle (Number 9 in the picture on page 3). If the scope is too heavy for you to do that you can place your forearm under the telescope tube when it is in a level position,...

[Page 6] Orion StarBlast 4.5

Aligning the Mirrors Again, please don’t. If it seems that the telescope is in need of adjustment, please tell the Librarian. Fog on the mirrors and eyepieces One of the odd things that happens when star gazing is that dew forms on pretty much ev...

[Page 7] Orion StarBlast 4.5

Getting Started Please read the instructions and practice with the telescope inside before you take it out in the dark. The image will be much better if you let the telescope cool down to air temperature before you start observing. This is a “Pu...

[Page 8] Orion StarBlast 4.5

Do You Wear Eyeglasses? If so, you will probably be able to observe with your glasses off by just refocusing the telescope to your unaided vision. If your eyes are astigmatic, images will probably appear best with glasses on. This is because a tele...

[Page 9] Orion StarBlast 4.5

Operating the EZ Finder A “finderscope” helps you point the scope. It is similar to a rifle sight. The EZ Finder works by projecting a tiny red dot onto a screen mounted in the front of the unit, so that when you look through the screen, the re...

[Page 10] Orion StarBlast 4.5

Align the Finderscope It is important that the finderscope and the telescope tube are parallel and pointing in the same direction. With the eyepiece adjusted for low power (24 mm), aim the telescope in the general direction of an object at least 1/...

[Page 11] Orion StarBlast 4.5

What to Expect Depending upon what is in the sky; Planets will look small, but you might be able to see cloud bands on Jupiter or the rings of Saturn. Craters on the Moon will be clear and numerous, the waxing and waning of Venus should be visible,...

[Page 12] Orion StarBlast 4.5

border between the dark and light portions of the disk (called the “terminator”). Use the Map on the telescope tube to find the major craters and features. If the Moon is too bright, or you want a bit more contrast, remove the small gray plug fr...

[Page 13] Orion StarBlast 4.5

Deep-Sky Objects Under dark skies, you can see lots of fascinating deep-sky objects, including nebulas, star clusters, and a variety of different types of galaxies. Most deep-sky objects are very faint, so it is important that you find an observing s...

[Page 14] Orion StarBlast 4.5

Messier made this list to help observers identify objects that might be mistaken for comets. Messer’s list includes some of the brightest and most attractive deep sky objects observable from the northern hemisphere Star Clusters are particularly...

[Page 15] Orion StarBlast 4.5

When To Go Observing “Seeing” and Transparency Atmospheric conditions vary significantly from night to night. “Seeing” refers to the steadiness of the Earth’s atmosphere at a given time. In conditions of poor seeing, atmospheric turbulenc...

[Page 16] Orion StarBlast 4.5

Weather Forecasting On the BBAA website you can find Clear Sky Charts [9] for the Hampton Roads area. The chart is a time line for weather. If you click on the chart, you will link to a detailed explanation. You will also find links to other cha...

[Page 17] Orion StarBlast 4.5

Website Links (1) Astronomical League: https://www.astroleague.org/ (2) NASA Night Sky Network: https://nightsky.jpl.nasa.gov/ (3) Back Bay Amateur Astronomers website: backbayastro.org (4) BBAA Contact Email: [email protected] (5) Monthly Sky C...

[Page 18] Orion StarBlast 4.5

Quote The immense distances to the stars and the galaxies mean that we see everything in space in the past – some as they were before the Earth came to be. Telescopes are time machines. — Carl Sagan Please say “Thank you” to the librarian f...