iOptron C70A Series, Инструкция по эксплуатации

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5.1.8. Customer R.A. and DEC
Here you can go to a target by entering its R.A. and DEC coordinates.
5.2. Sync to Target
This operation will match the telescope's current coordinates to the Target Right Ascension and
Declination. It can be used to correct GOTO pointing error. After slewing to an object, press MENU -
then scroll to “
Sync to Target
” and press
ENTER . Follow the screen to perform the sync. Using this
function will re-align the telescope to the selected object. Multiple syncs can be performed if needed.
This operation is useful to find a faint star or nebula near a bright star.
“
Sync to Target
” will work after “
Select and Slew
” is performed. You can change the slew rate
to make the centering procedure easier. Simply press a number (1 through 9) key to change the speed.
The default slew rate is 64x.
“
Sync to Target
” will improve the local GOTO accuracy near by the synced star, which is useful
for finding a faint object nearby.
5.3. Alignment
This function is used for aligning the telescope to the celestial pole and to create a sky model to
calibrate the mount’s GOTONOVA ®
functionality.
Please keep in mind that the sky can’t be modeled by
only three stars. Choose different stars will result in different errors. For better results, planetarium
software and/or plate solving is recommended.
The hand controller provides a polar alignment via
“
Polar Iterate Align,
” which uses a set of 2
bright. This also provides a viable polar alignment
approach for those who can’t see the pole.
The system provides four alignment methods
to calibrate the mount’s GOTO function: “
Solar
System Align
”, “
One Star Alignment
”, “
Two Star Alignment
” and “
Three Star Alignment
”. The “
Two
Star Alignment
” may be used to refine the polar alignment. The mount has to be at Zero Position
before performing any alignment.
5.3.1. Position of Polaris/SigmaOct
This function displays the position of the Pole Star. In the Northern Hemisphere the position of
Polaris is displayed, while in the Southern Hemisphere the position of Sigma Octantis is shown.
5.3.2. One Star Alignment
Press MENU =>
“
Alignment
” => “
One Star Alignment .
” A list of alignment stars that are above
the horizon is computed based on your local time and location. With the mount in the Zero Position, use
the
▲ and ▼ buttons to select a star and press
ENTER . Center the target in your eyepiece using the
arrow keys. Press ENTER when finished. If your mount is set up correctly and polar aligned, one star
alignment should be sufficient for good GoTo accuracy. Linear RA and DEC error will be displayed after
one star alignment.
5.3.3. Two Star Alignment
Two Star Align can improve the
accuracy of the mount’s polar alignment. Press
MENU =>
“
Alignment
” => “
Two Star Alignment
” A list of alignment stars that are above the horizon is computed
based on your local time and location. With the mount at the Zero Position, use the
▲ and ▼ buttons to
select the first alignment star and press ENTER . Center the target in your eyepiece using the arrow
keys after the mount slews to it. Press ENTER when finished. The hand controller will prompt you to
choose a second star. After centering the second star, the two-star alignment is finished.