Real Astronomy with Small Telescopes: Step-by-Step Activities for Discovery (The Patrick Moore Practical Astronomy Series)
Language: English
Pages: 148
ISBN: 1846284783
Format: PDF / Kindle (mobi) / ePub
This book demonstrates the use of an 80mm refractor and shows how it can be used as a real scientific instrument. The author is an experienced small telescope user and an astronomy educator, and he provides step-by-step instructions for numerous scientific activities. Users will find many activities and projects suitable for an 80mm refractor or 90mm reflector or Maksutov that have not been published elsewhere. Emphasis is on measurement and discovery activities rather than on casual observing. This book will provide amateur observers with the knowledge and skill that will help them make genuine contributions to the field of astronomy.
A Brief History of Time: From the Big Bang to Black Holes
Photographic Atlas of the Moon
50 Things To See With A Small Telescope
Dark Cosmos: In Search of Our Universe's Missing Mass and Energy
Photography of the Moon . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Lunar Occultations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Chapter Eight The Planets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61 Sketching the Planets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horizontal banding of clouds or it could be a true physical difference between the polar and equatorial dimensions. We can determine which by photographing the planet and measuring its equatorial and polar diameters. Proceed as described in the previous sections. Take several pictures, download them and save the best. Use a metric scale to measure the polar and equatorial diameters of the planet on your best print. They can also be measured on a computer monitor using the linear scale described.
Maximum brightness during their observation. For 80-mm refractors, the stars should have maxima brighter than eighth magnitude. When these stars approach maximum brightness their reddish color becomes obvious and they usually stand out among other stars in the field. Lists of variable star maxima for each month are published in Sky and Telescope, Astronomy Now and other astronomy periodicals. The AAVSO annually publishes Bulletin 68, a comprehensive list of predictions of long period variable.
Any stars in the camera’s viewing screen. On the other hand if the telescope is rigidly mounted and you have been careful not to move it, the large field of view should include the variable and reference stars. 117 118 Real Astronomy with Small Telescopes Processing the Image When printing the digital image of a variable star field don’t computer enhance either brightness or contrast as that will alter the magnitude vs. image brightness linearity. Fainter stars will be enhanced more than.
The north–south edge of the block with its shadow. At the same time adjust the mount on its azimuth axis so the shadow of the polar axis is perpendicular to the east–west direction of the block by referring to the previously drawn line. Once you have established alignment, you can mark the orientation of the block for nighttime reference. With the GEM we avoid the awkward positions for observing circumpolar objects characteristic of fork-mounted equatorials. Simply slide the mount along the.