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Explore the Stars Tonight !

Explore the Stars Tonight !. Telescope views. You will also see. Globular Star-Clusters. M10. Over 100 Messier objects including Star-Clusters, Nebulae and Galaxies. More than 1000 “NGC” objects. Planets, Double-Stars, Variable-Stars, Comets and Asteroids. Orion Nebula. Moon.

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Explore the Stars Tonight !

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  1. Explore the Stars Tonight !

  2. Telescope views You will also see Globular Star-Clusters M10 • Over 100 Messier objects including Star-Clusters, Nebulae and Galaxies. • More than 1000 “NGC” objects. • Planets, Double-Stars, Variable-Stars, Comets and Asteroids. Orion Nebula Moon Open Star-Clusters Saturn's Ring-System Lunar Craters Emission Nebulae Deep-space Galaxies Double-Stars Star-forming hydrogen cloud Impact craters and mountains NGC4565 Albireo NGC3293 Saturn Galaxy, 50 million light-years distant Star-cluster of young hot stars 270.000km wide ring-system Show-piece coloured double star Viewing through a 12 inch telescope under a dark sky

  3. Gathers more light • Sees fainter objects • Sees further into space • Sees more detail Larger Mirror - Telescope Mirror / Lens Your Eye 38mm² Mirror 1 square = 1 square mm 17,600 squares 6 inch mirror How does a telescope “see” better than your eye? A telescope mirror has a large surface area to gather light from faint and distant celestial objects. Your eye has very few square millimeters of surface area to let in light. Wayne Mitchell

  4. 32mm Galaxy30 million light- years away Light from the distant galaxy is reflected by a mirror inside the telescope and reflected into the eye-piece. Sec Mirr Eye-Piece Wayne Mitchell

  5. Galaxy30 million light- years away The Galaxy image has been brightened and magnified. Sec Mirr 32mm Eye-Piece Wayne Mitchell

  6. Point telescope at object you wish to view. Finder-scope Telescope Eye-piece FOCUS Wayne Mitchell

  7. Centre Finder-Scope cross-hairs on object, in this case a STAR-CLUSTER Finder-scope FOCUS Look into Telescope Eye-Piece Star cluster Telescope Eye-piece 9X 100X Star-Cluster appears as a "fuzzy blob" in the Finder-Scope Wayne Mitchell

  8. Telescope Eye-piece FOCUS Locate Saturn using a Star-Map. Saturn looks like a bright yellow star. Point the telescope at Saturn Finder-scope Saturn Wayne Mitchell

  9. Telescope Eye-piece FOCUS Centre the Finder-Scope on Saturn Finder-scope 9X Look into the eye-piece 300X Wayne Mitchell

  10. Moon at 150X TELESCOPE Alpine valley: 130km long gash through hills, created by a violently large impact The “Straight Wall”: A geological fault in the moons crust about 240m high and 110km long Apennine Mountains: Peak heights of more than 5km, a daring challenge for any lunar rock climber. Wayne Mitchell

  11. Purpose of the Finder-Scope? Use the Finder-Scope first to find the object and to align the telescope up with the Eye-Piece The Finder-Scope “sees” a largearea of the sky, about 5 degrees as illustrated… The Eye-Piece “sees” a very small area of the sky, only about 1 degree… 5 degree field 1 degree Finder Scope 6X 32mm Wayne Mitchell

  12. Eye-Piece Power 32mm 10mm 32mm Low Power 10mm High Power Eye-Piece AHIGH magnification Eye-Piece “sees” asmall area. ALOWmagnification Eye-Piece “sees” alargerarea. You fit “more sky” into the Eye-Piece! Wayne Mitchell

  13. Example • Telescope Focal-Length = 1000mm • Eye-Piece Focal Length = 32mm • Magnification = 1000/32 = 31X 10mm High Power 32mm Low Power Eye-Piece Magnification is determined by the Telescope Focal-Length divided by the Eye-Piece Focal-Length. As you can see, a Low-Power Eye-Piece fits the whole Moon into its field Wayne Mitchell

  14. Magnification and Planets TELESCOPE Saturn 500X 100X 200X As you can see, a “medium” power yields a superior, well defined and sharp image. 200X, a “high” power, yielding bright and sharp planetary images in 8 inch or larger size telescopes. 100Xmagnification is a “low” power, yielding bright and sharp planetary images in most size telescopes. 500X, a “very high” power, yields dull and distorted planetary images in any size telescope.

  15. Photo of Orion Constellation • Look out for these 3 bright stars known as Orion’s Belt. • Take note of the surrounding brightest stars forming this pattern… • You have just identified the Orion star constellation • Use the following Star-Map to identify the bright star names and other celestial objects… The Orion constellation photographed by Wayne Mitchell

  16. STAR MAP OF O Star-Map of Orion Saiph Rigel (star) M42 (nebula) Sigma (star) Bellatrix Betelgeuse Telescope views on next slide White dots represent stars M42 Rigel Sigma

  17. Photo of Orion constellation Rigel M42 Sigma Rigel: A Double-Star, appears as a single star to the naked eye, but a telescope reveals Rigel’s close orbiting companion star. TELESCOPE Sigma Orionis: A Multiple-Star, also appears as a single star to the naked eye, but a telescope reveals 4 stars, gravitationally bound in a celestial dance… M42 Orion Nebula:A beautiful intricate mass of glowing hydrogen gas, home to the birth of new stars. Telescope views

  18. Earth’s rotation causes objects to “drift” in the telescope’s field of view as demonstrated below… DOBSONIAN EQUATORIAL Telescope view of Comet Reflector Telescope Reflector Telescope Compensation for the “Drifting” motion is achieved by frequently adjusting the telescope manually or by using a Motor-Driven equatorial mount.

  19. Both Telescopes identical DOBSONIAN EQUATORIAL Reflector Telescope Reflector Telescope Only the mountings differ

  20. REFLECTOR TELESCOPE REFLECTOR TELESCOPE • Optional motorized tracking of celestial objects. • Used for astro-photography. • Slow-motion hand-wheel adjustments. • Portable tripod assembly. • Larger aperture scope at a lower cost. • Fast set-up time. • Simple to use, “Push-Pull”. • Requires no polar alignment. EQUATORIAL TRIPOD DOBSONIAN BASE Wayne Mitchell

  21. 20 10 30 Recording MIN + _ Leave the shutter open for 30 minutes while telescope tracks the nebula. Attach camera to telescope and open shutter. The true colour is captured on film! Wayne Mitchell

  22. Newtonian Reflector Photo- Spiral Galaxy Ideal for DEEP-SPACE and WIDE-FIELD viewing

  23. Refractor Actual View!- Saturn Excellent for PLANETARY viewing

  24. Newtonian Reflector Actual View- Star-Cluster Ideal for DEEP-SPACE and WIDE-FIELD viewing

  25. Maksutov Cassegrain Actual View- Moon surface For use on LAND and SPACE

  26. Romance in the Stars... Symbolizing a “heart” – cluster NGC2547 in Vela

  27. Stars visible under a dark sky Stars visible from a city Take your telescope to a dark sky! Thousands more stars are present in this tiny area ..

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