Celestron Advanced VX Mount and Tripod Celestron PWI Telescope Control Softwar - Page 14

StarSense Manual Alignment

Page 14 highlights

If you have not yet calibrated the StarSense camera, you can click "Calibrate" in the StarSense Automatic window. Otherwise, click "Ready", and the following options will appear: Select "Use Default 4 Points," and the StarSense Auto Alignment process will begin. The mount will then automatically slew around the sky. The StarSense camera will capture 4 images in different areas of the sky to complete the alignment. This takes two to three minutes. If there are parts of the sky where the StarSense camera's view is obstructed (i.e. by nearby objects like buildings or trees), StarSense will continue to slew around the sky until it can capture at least 4 images of clear sky. Once completed, you will receive an "Alignment Complete!" message, and you are now aligned and ready to observe using CPWI. If you want to choose where in the sky the mount will slew to obtain alignment references, select "Custom Points". This also allows more than 4 alignment points to be used in the Auto-Alignment. Once selected, the StarSense User Auto Alignment Creator window will appear. Use this window to select regions of sky that have a clear view from your location. 0° denotes the horizon, while 90° is zenith. Select at least 4 points. You can choose more than 4 points; this will add additional alignment references to the mount model. More reference points will provide better pointing (and tracking) accuracy across the entire sky but will take more time to complete. There will generally be little benefit from selecting more than 10 alignment points. After you have selected the alignment points, select "Complete." A pop-up window will appear and ask if you want to save your user auto-alignment references points. Select "Yes" if you want to use the chosen alignment points for future use, and you'll be prompted for a file location on your computer to save the file. You can use this file later by selecting "Load Custom Points" from the StarSense Automatic window. StarSense Manual Alignment StarSense Auto Alignment is about as hands-off as it gets, but it also has its limitations. Depending on your location, sections of the sky may be blocked by a tree, building, or mountaintop. StarSense is unaware of these natural limitations and may slew to sections of the sky that are obstructed from the StarSense camera's field of view. This is OK because StarSense will automatically keep scanning the sky until it finds a clear view, but it causes the alignment to take longer. To speed up the process, consider using StarSense Manual Alignment if your observing location has many areas of obstructed sky. You can perform a StarSense Manual Alignment by selecting "Perform Alignment" from the Alignment section of the Menu, and then selecting "StarSense Manual Alignment" from the Select an Alignment Method window. If the mount has home switches or sensors, CPWI will automatically move the mount to the home position. Otherwise, make sure you have the mount homed or at index marks. Alt/Az mounts should be pointing roughly north with the optical tube level, and EQ mounts should be roughly polar aligned. If you have not yet calibrated the StarSense camera, you can click "Calibrate" in the StarSense Automatic window. Otherwise, click "Ready," and the Select Capture Point window will appear along with the Slew Controls window. Now, use the slew controls to manually slew the mount to a region of sky that has a clear view from your location. Then, click "Solve Here" from the Select Capture Point window. The StarSense camera will take an image and plate-solve it to create an alignment point. Repeat this process at least 3 additional times to obtain at least 4 alignment points. The telescope is now aligned and ready to be used with CPWI. You can repeat this process more than 4 times to obtain even greater pointing accuracy. For best results across the entire sky, use alignment points that are widely spaced apart. 12

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If you have not yet calibrated the StarSense camera, you can click “Calibrate” in the StarSense Automatic window. Otherwise, click
“Ready”, and the following options will appear:
Select “Use Default 4 Points,” and the StarSense Auto Alignment process will begin. The mount will then automatically slew around
the sky. The StarSense camera will capture 4 images in different areas of the sky to complete the alignment. This takes two to three
minutes. If there are parts of the sky where the StarSense camera’s view is obstructed (i.e. by nearby objects like buildings or trees),
StarSense will continue to slew around the sky until it can capture at least 4 images of clear sky. Once completed, you will receive an
“Alignment Complete!” message, and you are now aligned and ready to observe using CPWI.
If you want to choose where in the sky the mount will slew
to obtain alignment references, select “Custom Points”.
This also allows more than 4 alignment points to be used
in the Auto-Alignment. Once selected, the StarSense User
Auto Alignment Creator window will appear.
Use this window to select regions of sky that have a clear
view from your location. 0° denotes the horizon, while 90° is
zenith. Select at least 4 points. You can choose more than
4 points; this will add additional alignment references to
the mount model. More reference points will provide better
pointing (and tracking) accuracy across the entire sky but
will take more time to complete. There will generally be little
benefit from selecting more than 10 alignment points. After
you have selected the alignment points, select “Complete.”
A pop-up window will appear and ask if you want to save
your user auto-alignment references points. Select “Yes” if
you want to use the chosen alignment points for future use,
and you’ll be prompted for a file location on your computer
to save the file. You can use this file later by selecting “Load
Custom Points” from the StarSense Automatic window.
StarSense Manual Alignment
StarSense Auto Alignment is about as hands-off as it gets, but it also has its limitations. Depending on your location, sections of the
sky may be blocked by a tree, building, or mountaintop. StarSense is unaware of these natural limitations and may slew to sections of
the sky that are obstructed from the StarSense camera’s field of view. This is OK because StarSense will automatically keep scanning
the sky until it finds a clear view, but it causes the alignment to take longer. To speed up the process, consider using StarSense
Manual Alignment if your observing location has many areas of obstructed sky.
You can perform a StarSense Manual Alignment by selecting “Perform Alignment” from the Alignment section of the Menu, and then
selecting “StarSense Manual Alignment” from the Select an Alignment Method window. If the mount has home switches or sensors,
CPWI will automatically move the mount to the home position. Otherwise, make sure you have the mount homed or at index marks.
Alt/Az mounts should be pointing roughly north with the optical tube level, and EQ mounts should be roughly polar aligned. If you have
not yet calibrated the StarSense camera, you can click “Calibrate” in the StarSense Automatic window. Otherwise, click “Ready,” and
the Select Capture Point window will appear along with the Slew Controls window. Now, use the slew controls to manually slew the
mount to a region of sky that has a clear view from your location. Then, click “Solve Here” from the Select Capture Point window. The
StarSense camera will take an image and plate-solve it to create an alignment point. Repeat this process at least 3 additional times to
obtain at least 4 alignment points. The telescope is now aligned and ready to be used with CPWI. You can repeat this process more
than 4 times to obtain even greater pointing accuracy. For best results across the entire sky, use alignment points that are widely
spaced apart.