Filter Wheels For
Visual and Imaging
Having started to do
some deep sky imaging using the SBIG ST-10E CCD camera I had a
look around for a Colour Filter Wheel. I had already seen the
True Technology Flip Mirror with filter holder, but wanted something
I could use remotely. The benefit of the Flip Mirror was when
not set up for goto, or if I was having problems focusing I could
at least use the eyepiece to check the approximate position of
the object I was about to image.
In addition having
a selection of 2" Lumicon filters, and 1.25" planetary
filters, it would be nice to use those in a similar manner. Looking
at my choices it was down to the SBIG unit - tried and tested,
or the new Visual motorised unit from True Technology which seemed
to satisfy more of my needs. Having now got the upgrade for Maxim
DL which includes the TT CFW and ST-10E I went for the motorised
visual wheel from True Technology.
The SBIG ST-10E on
the True Technology Custom Filter Wheel
A special hand unit
allows power via the ST-10E, it also allows the use of more than
3 filters in the Maxim DL software.
SBIG ST-10E on Celestron
C11 using NGFS & also on Takahashi FS128
This shows the CFW
with the position of the 1.25 IR blocker for CCD work and my filter
wheel combination. One with Lumicon Deep Sky - OIII - HBeta -
UHC - and ND filters. The 8 way wheel has 1.25" Meade planetary
filters, and the other 2" has the Clear - Red, Green, and
Blue filters for Tricolour imaging along with the visual diagonal.
As mentioned before
this filter wheel assembly allows for visual use of the filter
31mm Nagler on both
Celestron C11 and Takahashi FS128
As with a CCD camera
it is possible to use one of the many adapters to couple up an
Astrovid video or 35mm camera for the same sort of applications.
Again Celestron C11
and Takahashi FS128.
Follow the link for
examples of images obtained by Tri Colour Imaging
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