Bresser National Geographic 9062000 Mode D'emploi page 13

4. Alignment
In order to use your telescope's Go To mode, you must align the telescope
properly so it knows where it is pointing when it is turned on. There are three
ways to align your telescope: one-, two- and three-star alignment.
Step 1: To start the alignment, press the centre key (5) on the handbox and
select the first menu option, 'Telescope Align'. There you will be able to choose
between one-, two- and three-star alignment.
The more stars you use for the alignment the higher the slewing precision of
your telescope will be.
One-Star Alignment:
Step 2: After you select this option, you will be prompted to select a target star.
The software will select a star that is very visible in the night sky. If you happen
to know of a star you can see with the naked eye, you can choose it by pressing
the up and down arrow keys and then selecting it with the centre key (5). In
most cases, you will want to select the first option presented to you. Do so by
pressing the centre key (5).
Step 3: The telescope will now slew to that star and will prompt you to centre
it in the field of view, which you can do by using the arrow keys. The star you're
focusing on is the brightest star in the region your telescope is pointing at.
When the star is centred, confirm the position with the centre key (5). The
telescope is now aligned.
Two- and Three-Star Alignment:
The procedure is similar to one-star alignment. The only difference is that you'll
have to repeat steps 2 and 3 twice or thrice depending on the type of alignment
you've chosen.
Note: If you have aligned the telescope, don't move it manually. Use the arrow
keys on the handbox to make adjustments. If you do move it manually or change
the tripod orientation, the telescope has to be realigned.
5. Further Adjustment:
Target Sync:
With this method, you can further improve the alignment of the telescope. After
slewing to a star target you know, you can centre the object precisely in the
field of view. Press the centre key (5) and select 'Telescope Align', then 'Target
Sync'. The telescope will align to that target and have more precise positioning
for further targets you want to observe.
Backlash Correction:
You can improve the precision of the telescope by training the backlash correc-
tion of the axis. This must be done separately for each axis and is not necessary
for most cases.
Simply go to the main menu by pressing the centre key (5) and select 'Telescope
Align' and then 'RA BKlash Corr.' to adjust the right ascension axis (horizontal
axis) or 'DEC BKlash Corr.' to adjust the declination axis (vertical axis). Then
follow the on-screen instructions.
Part III – Menus
Initial Start:
Welcome screen
Date and Time
Daylight saving
Status: off
Status: on
Custom Site
Name:
Lon:
Lat:
Zone:
Country & City
Country: up and down
City: left and right
OTA Zero
Main Menu Overview:
• Telescope Align
• One Star Align Aligns the telescope with a single star
• Two Star Align Aligns the telescope with two stars
• Three Star Align Aligns the telescope with three stars
• Target Sync Further improves the alignment
of the telescope
• RA BKlash Corr. Calibrate RA axis backlash
• DEC Bklash Corr. Calibrate DEC axis backlash
• Navigation
• Solar System Object catalogue of the solar system
• Constellation Catalogue with the stellar constellations
• Famous Star Famous star catalogue
• Messier Catal. Catalogue with bright deep-sky objects
• NGC Catalog. Extensive catalogue with broad variety
• IC Catalogue Catalogue with faint objects
• Sh2 Catalog. Catalogue with faint objects
• Bright Star Cat Catalogue with bright stars
• SAO Star Catal. Extensive star catalogue
• Customer Objects Allows you to store your own objects
• Input RA and DEC Insert a custom point in the sky
• Custom Land Goal Insert a custom land target
• Utilities
• Current Objects Currently visible objects
• Object Rise/Set Rising and setting time of an object
• Curr. Lunar Phase The current lunar phase
• Timer Timer function
• Alarm Set up an alarm
• Eyepiece FOV Field of view of the eyepiece
• Eyepiece Magn. Magnification of the eyepiece
• Display Illumin. Display brightness
• Parkposition Slew to park position
• Setup
• Time and Date Enter time and date
• Daylight Saving Enable/disable daylight saving
• Site Setting Set the current location
• Country & City Set the current location according to a city
• Custom Site Set the current location by using
GPS coordinates
• Sky/Land Switch between sky and land targets
• Sky Target Setting for sky observation
• Land Target Setting for land target observation
• AZ / EQ Switch between Azimuthal
and equatorial mounting
• Alt Telescope Alt./AZ mount type
• Equ Telescope EQ mount type
• Telescope Mount Configure telescope mount settings
• Tracking Rate Set the tracking rate
• Star Speed
• Solar Speed
• Moon Speed
• Customize Speed
• Language Change the language
• Telescope Model
• Reset Reset to factory settings
Part IV – Observation
After aligning the telescope, the motors in the mount will begin to move the
telescope so that the Earth's rotation is compensated for and the objects stay
in the field of view of the telescope.
Note: If you have aligned the telescope, don't move it manually. Use the arrow
keys on the handbox to make adjustments. If you do move it manually or change
the tripod position, the telescope has to be realigned.
Once you have aligned the telescope, you can slew to every object in the night
sky. This is done by pressing the centre key (5) on the handbox and selecting
the 'Navigation' option from the menu.
Select the object catalogue you prefer from the menu by using the arrow keys.
Press the centre key (5) to confirm your selection.
When you select an object catalogue, the first object of the catalogue will be
displayed. You can change the currently displayed object by pressing the up
and down arrow keys.
Select the object you want to view with the telescope by pressing the centre key
(5). The telescope will then slew to that position.
Example: Let's observe Jupiter.
EN
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