USAGE:
The Calcium Quark has a standard eyepiece snout so that it can be
inserted directly into the eyepiece drawtube.
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
1.5 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.
Because the Quark requires additional backfocus, you will need to dial
the focus knob inward quite significantly. Included with the Calcium
quark are three front snouts that will allow you you extend or compress
the amount of backfocus used by the Quark by changing which snout is
threaded onto the front of the Quark:
Standard configuration (silver 1.25” snout): 67mm backfocus
2” front snout: 61mm backfocus.
1.25” black extension snout: 99mm backfocus. Remove diagonal.
If your telescope has limited focus travel and none of the included snouts
permit reaching focus, you may need to use a 1.25” diagonal instead of a
2” diagonal, or you may need to remove the diagonal entirely in order to
reach focus.
Knob tuning:
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.
Little change will be visible within 1.0Å of CWL range, as the Calcium II H
line is very wide.
