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USAGE:
The Scout is an F/3.75 native achromatic doublet objective with an
integrated 4.3x telecentric barlow, this results in an approximately
930mm F/15.5 image to provide the best performance.
Because of the included barlow, and ample backfocus is available and a
large magnification is achieved with normal focal length eyepieces.
The filter must be plugged in using the supplied power supply. The
etalon cavity is precision heated to regulate the wavelength of the filter
output.
Any other USB power source you wish to use must be rated for at least 2
amps at 5 volts. Computer USB ports and cell phone chargers do not
normally support this much power.
After letting the filter come up to temperature and settle, the light will turn
green and viewing can begin.
Knob tuning:
If the image lacks contrast, you may need to adjust the center
wavelength of the filter.
A knob is provided to adjust the center wavelength of the filter. Turn the
knob counter clockwise to lower the wavelength towards the blue by up
to 0.5Å. Turn clockwise to raise the wavelength towards the red by up to
0.5Å. Each click of the knob is 0.1Å.
Heavy accessories or a loose connection can cause droop, which results
in blue shift. Turn the knob clockwise 2-3 clicks and wait 5-10 minutes to
see if the view is improved.
Additional tuning can be performed, just keep in mind that after every
adjustment of the knob the filter must settle in temperature for
approximately 5-10 minutes before your change becomes effective.
Tuning can also be used to observe Doppler shifted features moving
towards or away from you. A feature moving towards you will be brighter
in blue (counterclockwise) wing shift, away from you will be reddened
(clockwise knob tuning).
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