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A few details regarding the pressure tune system. The amount of pressure being supplied to the etalon
cavity is minimal. It is the equivalent of going from -150m below sea level to about 3,000m. Or around 0.1
Bar, there is no risk of explosion. We are dealing with only a fraction of 1 atmosphere. When not in use we
recommend that you release the pressure by simply backing off the black handle from the cylinder body. If
the system unthreads completely, simply thread it back on 1 turn. It is not necessary to re-set the system
every time it is used. Re-setting may only be required if the system has been sitting for a long period of time.
Re-Focus:
When you feel you have tuned effectively, re-focus the telescope. The finer details should come
into view. Try to relax the eye while observing and let the details come to you.
Change the eyepiece:
When you have a good feel for observing at lower magnifications try to increase the
magnifications in small steps. Place an interesting artifact in the center of the field. Replace the 25mm with a
8 - 12mm eyepiece. Look thru the eyepiece and re-focus carefully. The image has dimmed slightly due to
higher magnification but the details should be easier to see. You can push the magnification as seeing
conditions allow.
Seeing conditions:
Please note that seeing conditions can affect the performance of your telescope in H-
alpha wavelength. Cloud cover, wind, humidity, and air turbulence caused by heat play a major role and can
complicate the observation of details.
Double-Stacking in H-alpha:
Double stacking is also possible with the LS60MT telescope. The additionally available double-stack filters
LS50FHa (item number 0550200) or LS60FHa (item number 0550250) can be simply screwed onto the front
of the LS60MT, no additional adapters are required. This will reduce the bandwidth to <0.5 Angstroms. This
significantly increases the contrast on the surface of the sun, which makes much more details visible on the
solar surface.
