14
To adjust minutes, move the cursor to each digit and use the n
▲
or
▼
key to change the
number. To change the “behind” or “ahead of” UT, move the cursor to “ahead of” and using
▲
or
▼
key to toggle between “behind” and “ahead of”. For other parts of the world, you can find
out your “time zone” information from internet, such as
http://www.timeanddate.com/worldclock/
.
DO NOT COUNT DAYLIGHT SAVING TIME.
To set daylight saving time, use the
◄
or
►
key to move the cursor to the bottom of the
screen, use
▲
or
▼
button to toggle the Daylight Time Saving between X, which means “No”
and
√
, which means (Yes).
When the number is correct, press ENTER and go to “Setup Site Info” screen:
The longitude and latitude coordinates will be updated when the GPS picks up satellite
signals. “W/E” means west/east hemisphere; “N/S” means north/south hemisphere; “d” means
degree; “m” means minute; and “s” means second.
If for any reason your GPS can’t pick up a signal you can manually enter the GPS
coordinates. Press
◄
or
►
key to move the cursor and using
▲
or
▼
key to toggle between
“W” and “E”, “N” and “S”, or to change the numbers. It is always a good idea to do your home
work to get the GPS coordinates before traveling to a new observation site.
The site coordinates information can be found from internet, such as GPSVisualizer
(
http://www.gpsvisualizer.com/geocode
), by entering the city name or address. In case you only
find the site information in decimal format you can convert them into d:m:s format by multiplying
the decimal numbers by 60. For example, N47.53 can be changed to N47º31'48”: 47.53º = 47º
+0.53º, 0.53º=0.53x60'=31.8', 0.8'=0.8x60"=48". Therefore, 47.53º=47º31'48" or 47d31m48s.
Same as N47º31.8’: 31.8’=31’+0.8’, 0.8’=0.8x60”=48”.
4.2.2. Using your telescope
Selecting an Eyepiece:
1. Always begin viewing with the lowest power eyepiece. (Note: a 25 mm focal length
eyepiece has a lower power than a 10 mm one.) A formula can be used to determine the power
of each eyepiece: Telescope focal length divided by eyepiece focal length equals magnification.
Ex. 400mm ÷ 25mm = 16X (magnification). The rule of thumb is that the magnification should
not be too much larger than the OTA aperture, otherwise view and color distortion may occur.
2. A 45° Erecting Diagonal Prism is included in the R80 or MC90 telescope. The
Erecting Diagonal Prism is used to erect the image you will see. Astronomical telescopes are
designed in such a way that the image you see may be UPSIDE DOWN and REVERSED. This
is perfect for viewing celestial bodies. However, it will feel strange when observing a land object
or a bird.
Set up site info:
Longitude:
W071d27m47s
Latitude:
N42d15m40s
