All Sky User Manual
October 11, 2014
All Sky User Manual
Page 26
E. SHUTTER vs SENSE UP
One of the decisions you will be making is how much exposure do I need. The
answer to this question depends upon your seeing conditions and outside
environment lighting.
You want to capture as many star as you ca, so you will need the maximum
exposure that the sky conditions can provide. But, you may have other non-sky
objects that contain a light source in camera’s field of view. So will a long
exposure will cause that objects light source to overpower the stars in the image.
The technique is to determine which is best you’re your outside situation.
Setting
E. SHUTTER
manually to a value say to
x1024
will always give you that
exposure (for
x1024
that would be
17s
) The
E.SHUTTER’s
exposure rate will always
be at that value and a new image will appear when that exposure time is done
(ie every
17s
) no matter what the sky conditions are.
Setting
E.SHUTTER
to
AUTO
or
1/60
will allow you access to
SENSE-UP
which will
allow you to keep doubling the exposure time, but in this case the camera will
determine the amount of doubling it should perform without over exposing the
image. It may deem that
4 seconds
is best (even though you might disagree
and you had set it to
8 seconds
, that is at
x512
).
Check them both out to see which technique is best you your situation.
Summary of Contents for All Sky
Page 77: ......
