Step 1
Choose Object
Select a catalog target or enter its angular size manually.
Step 2
Choose Equipment
Built-in camera used for this telescope.
The reducer or barlow multiplier is applied to the selected optic's native focal length.
Results
Calculated Field
Effective Focal Length—
Field Width—
Field Height—
Pixel Scale—
Target Fit—
Choose a camera and telescope or lens to calculate the field of view.
Preview
Visual Field of View
Camera frame
Select a target
—
Camera field
Target size