Opticstar 450CD series, User Manual

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For the more serious observations and tracking of night sky objects you will greatly
ing your telescope with a digital or film camera. In this
ase the video camera needs to be attached to the main optical tube of your telescope
and o
your video camera while taking advantage of your telescope’s tracking
ttaching Lenses to the Opticstar Video Camera
a standard female C/CS screw mount
ns will perform well with your camera. As a matter of fact performance may be
eteriorated by a factor of 2 to 4 times. Opticstar provides lenses that best match your
amera’s architecture, CCD type, CCD size and functions.
general the format size of the lens must be preferably equal to or greater than the
rmat size of the camera that is used with. If the lens used is of smaller size
eripheral parts of the image will be cut-off (tunnel vision effect). For example:
o
A 1/2" lens on a 1/2" format camera will produce a rectangular image with
maximum field of view (optimum).
o
A 1/3" lens on a 1/3" format camera will produce a rectangular image with
maximum field of view (optimum).
o
A 1/2" lens on a 1/3" format camera will produce a rectangular image with a
somewhat reduced field of view.
Tracking
Alternatively you may wish to use you astro-camera to aid tracking during long
exposure photography when us
c
pr perly aligned before use.
You may also want to deploy this arrangement to take video footage of the night sky
ith
Using your Opticstar Camera
w
capabilities.
A
Your Opticstar camera comes equipped with
that supports various types of lenses. Standard and ZOOM manual Lenses can be
easily attached to your camera as can automatic lenses. When using automatic lenses
a control cable supplied with the lens will connect it to the camera.
Special care has to be taken when purchasing lenses that are best suited to your
pticstar camera. That a lens will fit it does not necessarily mean that this particular O
le
d
c
In
fo
p
o
A 1/3" lens on a 1/2" format camera will produce a rather compromised
image, not recommended (worst case).
© Opticstar Ltd 2003, 2004
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