The celestial body search browser appears by clicking the ‘Binoculars’ icon located on the toolbar.
In addition to this section, please refer to the sections
“Celestial body search” and
“Search and guiding setting” for additional information.
Celestial body guiding modes
StellarWindow provides three different guiding modes. The default guiding mode is the
‘Guiding Ring Mode’ *1 that comes with audio guidance.
The Guiding Ring Mode is the default guiding mode.
After starting the celestial body guiding procedure, the guiding
ring shown below appears in the center of the screen and the audio guidance begins by default.
This mode is designed to be used in combination with the auxiliary
sensor.
The angle (angle indicator) displayed on the guiding ring refers to the angular distance*2
to reach the desired celestial body.
Change the sensor’s pointing direction gradually
towards the arrow’s direction shown in the guiding ring.
This gradually decreases the figure shown by the angle indicator.
The desired celestial body can be found as a result of this procedure. The celestial body
guiding procedure is completed when the desired celestial body is guided into the inner ring marked by broken
lines.
Guiding Ring Mode
The Guiding Ring Mode is the default guiding mode.
In the case of the guiding ring shown above,the desired celestial body can be discovered by moving
towards the upper left at an angle of 74°.
Audio guidance
The audio guidance is provided by default when the Guiding Ring Mode is in use. It is provided
to enable the user to guide the desired celestial body without looking at the screen.
This is useful in the case when the sensor is extended and attached to binoculars. After
specifying the desired celestial body, the audio guidance enables the user to keep looking
into the binoculars instead of looking at the PC screen to guide the desired celestial body
into the binoculars’ viewing field.*3
The audio guidance uses a synthesized voice and is roughly provided as below
Voice： “Audio guidance begins. The target object is located at the azimuthal angle of
AAAA° and the altitude of BBBB°.
Voice： “Remaining angles are CCCC° [left/right] , DDDD° [upward/downward].
The following guidance is repeated at the time interval (unit: second) specified.｛
Voice： “EEEE° [left/right], FFFF° [upward/downward].”
The repeating of the above guidance finishes when:｛
(Viewing field center - Target coordinates < Guiding completion angle);
｝
｝
Voice： “The target object is in sight.”
Variables:
AAAA： Azimuth angle of the horizontal coordinates of the target object.
BBBB： Altitude of the horizontal coordinates of the target object.
CCCC： Horizontal angular distance to reach the target object at the time of the search procedure initiation.
DDDD： Vertical angular distance to reach the target object at the time of the search procedure initiation.
EEEE： Current horizontal angular distance to reach the target object.
FFFF： Current vertical angular distance to reach the target object.
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The audio guidance does not read aloud the data of the horizontal direction and that of the vertical direction as negative values with the former read as the left/right direction applicable to the current viewing field and the latter as the
up/down direction applicable to the current viewing field. When either the horizontal direction or the vertical direction
enters the guiding completion angle range, the audio guidance does not read aloud the data of such a direction.
Due to a time lag occurring before the audio guidance reads aloud data, the current sensor location and the angle read
aloud by the audio guidance may not match if moving the sensor quickly.
Please note that the audio guidance cannot be canceled until the guiding procedure is completed. If it is necessary to cancel it immediately, use the mouse to scroll instead of the sensor to complete the guiding procedure.
This guiding mode is designed to be used when the mouse is in use. The screen automatically scrolls to reach the desired celestial body and the viewing angle is then automatically adjusted so that it becomes optimum to observe such an object. While the image of the desired celestial body is enlarged in the same way as when the viewing angle automatic adjustment
is performed, unique zoom-out feature applies with this mode to zoom out the image of the celestial body.
As the screen automatically scrolls to reach the desired celestial body, the sensor interlock is automatically canceled when the guiding procedure begins.
It is strongly recommended to use this guiding mode instead of the Guiding Ring Mode when the mouse is in use as there is no need for the guiding ring to remain displayed on the screen.
The automatic enlargement feature of the Automatic Enlargement and Scroll Mode is excluded from this mode. When
using this mode, the size of the viewing field remains unchanged and the screen automatically scrolls to guide the desired celestial body.
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*1 Guiding ring
The ‘guiding ring’ is a term with StellarWindow. to express the ‘ring’ designed for the guiding of celestial bodies. In some versions, “guiding circle“ or “guide circle“ is used instead.
*2 Angular distance
An angular distance, indicated in degrees, describes the length of the celestial globe’s great circle as an angle.
*3 Celestial body guiding based on the audio guidance
The developer of StellarWindow carried out repeated experiments of the audio guidance guiding procedure using binoculars.
Initially, it was difficult to guide the desired celestial body accurately as the target point tended to be overshot.
After becoming used to the sensor’s movement characteristics, however, this procedure became easy and the developer was able to guide the target object on the first try by solely following the audio guidance.
A guiding completion angle can be optionally set at 1° in order to produce a higher level of guiding accuracy.
If the completion angle is too narrow, however, it may be difficult to complete the guiding procedure until becoming used to the procedure itself. It is therefore recommended to set the completion angle at approximately 10° initially and practice to be able to
roughly aim at a desired direction.
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