Software Bisque Knowledge Base Article – 1187
CREATING A FIELD OF VIEW INDICATOR FOR BINOCULARS
ISSUE
How can I use TheSky6 to create a field of view indicator for my binoculars?
RESOLUTION
TheSky6 can be used to create custom field of view indicators for virtually any optical configuration, including binoculars.
-
Determine the field of view of the binoculars. This value is normally included with the product documentation, or is available on the manufacturer’s web site. In this example, we’ll use a 4 degree field of view.
-
Click View | Field of View Indicators to display the Field of View Indicators dialog box. Normally, FOVIs are based on a combination of a telescope and either an eyepiece or CCD detector. So, we’ll first define a “dummy” telescope and “dummy” eyepiece to create a basic field of view indicator, and then edit the properties of the FOVI specifically for binoculars.
-
Click the Telescopes tab and then click Create.
-
On the Create/Edit Telescope dialog box, enter Binocular in the description text box and then click OK.
-
Click the Eyepieces tab and then click Create.
-
On the Create/Edit Eyepiece dialog box, enter Binocular Eyepiece in the description text box and then click OK.
-
Click the Create FOVIs tab.
-
Click the My Eyepiece option and then select Binocular Eyepiece from the list.
-
Select Binocular from the telescope list and then click Add My FOVI.
-
Click the My FOVIs tab, and then select Binocular + Binocular Eyepiece from the list and then click Edit to display the Create/Edit Detector Geometry dialog box.
-
In the Edit text box, edit the description to read My Binoculars (or other) and then select Element 1 in the Elements list box.
-
Click Circle in the Shape group, and then enter 240 (60 minutes/degree * 4 degrees for this example) in the X and Y Size text box.
-
Select the Binocular on the My FOVI list and then click the On option.
-
Click OK.
The binocular field of view indicator is now displayed.
To convert your binocular’s field of view from degrees to minutes, use this simple equation:
Field of view in arcminutes =
|
Field of view in degrees x 60 minutes/degree |
APPLIES TO
TheSky6, all Editions.
Last Reviewed: 03/25/2005