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Last time

Last time. About the use of binoculars. Telescope types. Types of mount. Finders, eye pieces, etc. Setting up and using visually. Martin Crow Crayford Manor House Astronomical Society. This week: Observing. About observation. Types of observation.

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Last time

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  1. Last time About the use of binoculars. Telescope types. Types of mount. Finders, eye pieces, etc. Setting up and using visually. Martin Crow Crayford Manor House Astronomical Society

  2. This week: Observing About observation Types of observation Martin Crow Crayford Manor House Astronomical Society

  3. So what are going to be seeing when we observe? Martin Crow Crayford Manor House Astronomical Society

  4. Our Solar System Martin Crow Crayford Manor House Astronomical Society

  5. Martin Crow Crayford Manor House Astronomical Society

  6. Martin Crow Crayford Manor House Astronomical Society

  7. Martin Crow Crayford Manor House Astronomical Society

  8. Our Solar System Martin Crow Crayford Manor House Astronomical Society

  9. Jupiter Saturn Mars Aldebaran Venus Mercury Martin Crow 2002 April 24 Martin Crow Crayford Manor House Astronomical Society

  10. 2010 April 04 Martin Crow Crayford Manor House Astronomical Society

  11. Our Solar System Martin Crow Crayford Manor House Astronomical Society

  12. Mars 2003 Aug 23 Martin Crow Crayford Manor House Astronomical Society

  13. Martin Crow Crayford Manor House Astronomical Society

  14. Martin Crow Crayford Manor House Astronomical Society

  15. Jupiter 2011 Nov 19 DMK 41as02, 2.5x powermate on C9.25 Processed in Avistax Martin Crow Martin Crow Crayford Manor House Astronomical Society

  16. Martin Crow Crayford Manor House Astronomical Society

  17. Our Solar System Martin Crow Crayford Manor House Astronomical Society

  18. Martin Crow Crayford Manor House Astronomical Society

  19. Martin Crow Crayford Manor House Astronomical Society

  20. Martin Crow Crayford Manor House Astronomical Society

  21. Martin Crow Crayford Manor House Astronomical Society

  22. Martin Crow Crayford Manor House Astronomical Society

  23. Martin Crow Crayford Manor House Astronomical Society

  24. Martin Crow Crayford Manor House Astronomical Society

  25. Martin Crow Crayford Manor House Astronomical Society

  26. Martin Crow Crayford Manor House Astronomical Society

  27. Martin Crow Crayford Manor House Astronomical Society

  28. The Magnitude system The scale of measuring brightness is believed to have originated with Hipparchus (190 BC – 120 BC). It divide up the visible stars into 6 brightness's, 1 for the brightest and 6 for the faintest. In 1856 Norman Pogson formalised this by defining a 1st magnitude star as 100 times brighter than a 6th magnitude star. Therefore the difference between magnitudes is the 5th root of 100 = 2.51. So: 1st to 2nd magnitude has difference of 2.51 1st to 3rd =2.51 x 2.51 = 6.3 1st to 4th = 2.51 x 2.51 x 2.51 = 15.8 1st to 5th =2.51 x 2.51 x 2.51 x 2.51 = 39.7 1st to 6th = 2.51 x 2.51 x 2.51 x 2.51 x 2.51 = 100 The star Vega is set at zero magnitude. This is its apparent magnitude. On this scale Sirius is -1.4, the Moon -12.74 and the Sun -26.74 Martin Crow Crayford Manor House Astronomical Society

  29. Types of observing Visual observing The eye is our primary means of exploring the world around us. Good for exploring the whole sky Doing meteor watches Martin Crow Crayford Manor House Astronomical Society

  30. Martin Crow Crayford Manor House Astronomical Society

  31. Types of observing Visual observing The eye is our primary means of exploring the world around us. Good for exploring the whole sky Doing meteor watches Martin Crow Crayford Manor House Astronomical Society

  32. Nick James Martin Crow Crayford Manor House Astronomical Society

  33. Types of observing Visual observing The eye is our primary means of exploring the world around us. Good for exploring the whole sky Doing meteor watches Observing eclipses of the Sun an Moon Martin Crow Crayford Manor House Astronomical Society

  34. Martin Crow Crayford Manor House Astronomical Society

  35. Martin Crow Crayford Manor House Astronomical Society

  36. Types of observing Visual observing The eye is our primary means of exploring the world around us. Good for exploring the whole sky Doing meteor watches Observing eclipses of the Sun an Moon Observing atmospheric phenomena Martin Crow Crayford Manor House Astronomical Society

  37. Honor Wheeler Martin Crow Crayford Manor House Astronomical Society

  38. Types of observing Visually assisted observing Binoculars Good for exploring the sky more deeply Variable stars Solar observing – not direct The Classical planets and some of the brighter asteroids Comets Martin Crow Crayford Manor House Astronomical Society

  39. Types of observing Visually assisted observing Telescopes Good for fainter objects Variable stars Double stars Solar observations – not direct Luna observations Planetary observations Martin Crow Crayford Manor House Astronomical Society

  40. Martin Crow Crayford Manor House Astronomical Society

  41. Types of observing Imaging Point and shoot and DSLR cameras on or off a tripod Good for wide field sky shots – constellations, atmospheric phenomena, meteors and planetary conjunctions. Martin Crow Crayford Manor House Astronomical Society

  42. Martin Crow Crayford Manor House Astronomical Society

  43. Martin Crow Crayford Manor House Astronomical Society

  44. Martin Crow Crayford Manor House Astronomical Society

  45. Martin Crow Crayford Manor House Astronomical Society

  46. Martin Crow Crayford Manor House Astronomical Society

  47. Martin Crow Crayford Manor House Astronomical Society

  48. Martin Crow Crayford Manor House Astronomical Society

  49. Honor Wheeler Martin Crow Crayford Manor House Astronomical Society

  50. Martin Crow Crayford Manor House Astronomical Society

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