Lunt Solar Systems LS40THa Manual

Lunt Solar Systems Kikkert LS40THa

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Manual

LS40THa H-alpha Solar-Telescope

Telescope for solar observation in the H-Alpha wavelength. The H-alpha wavelength is the most impressive

way to observe the sun, here prominences at the solar edge become visible, filaments and flares on the

surface, and much more.

Included Contents:

- LS40THa telescope

- H-alpha unit with tilt-tuning

- Blocking-filter B500, B600, or B1200

- 1.25 inch Helical focuser

- Dovetail bar (GP level) for installing at astronomical mounts

- 1/4-20 tapped base (standard thread for photo-tripods) inside the dovetail for installing at photo-tripods

- Sol-searcher

Please note: Please keep the foam insert from the delivery box. The optionally available transport-case for

the LS40THa (item number 0554010) is not supplied without such a foam insert, the original foam insert

from the delivery box fits exactly into this transport-case.

Congratulations and thank you for purchasing the LS40THa telescope from Lunt Solar Systems! The easy

handling makes this telescope ideal for starting H-Alpha solar observation. Due to its compact dimensions it

is also a good travel telescope for the experienced solar observers.

Safety Information:

There are inherent dangers when looking at the Sun thru any instrument. Lunt Solar Systems has taken your

safety very seriously in the design of our systems. With safety being the highest priority we ask that you read

and understand the operation of your telescope or filter system prior to use. Never attempt to disassemble

the telescope! Do not use your system if it is in someway compromised due to mishandling or damage.

Please contact our customer service with any questions or concerns regarding the safe use of your

instrument.

Never look at the Sun with your naked eye or with a telescope that is not specifically designed to do

so. Permanent and irreversible eye damage may result!

Never leave the solar telescope unsupervised while pointed at the Sun. People who are not familiar

with the correct operating procedures of the system may inadvertently replace the diagonal or

remove the filter itself not being aware of the integrated safety features of each.

The Lunt Solar Systems telescopes are not interchangeable with competitor products.

A Lunt Solar Systems solar telescope houses many optical elements that are all pre-aligned and fixed at the

factory. There are no user serviceable parts inside the scope. The telescope should never be taken apart.

This will not only void your warranty leading to costly repairs, it can only serve to further damage the

instrument and compromise its safety.

Most Lunt Solar Systems filters and telescopes house a delicate optical element referred to as an Etalon.

These Etalons are suspended in the system housing in an effort to both protect it and isolate it from outside

influences, which could de-tune the Etalon filter. Extensive research has been done to assure the best

performance of what is essentially the "heart" of the system while protecting it from the day-to-day bumps,

jarring, and vibrations of normal use. However, the instrument should never be subjected to shock due to

being dropped. Mishandling of the filters system will cause the Etalon to de-contact (not covered under

warranty) and will render the instrument useless until repaired.

The instrument should be stored in its original box, or in the optionally available transport case item number

0554010. As with any precision optical instrument it should be kept in as low a humidity area as possible.

With proper handling and care the filter should last a lifetime.

Okay let's get started...

Safety First!

- Always check any telescope before use for solar observing. Do not use any telescope or filter that

appears to be damaged. Verify that all glass and filters are in place.

- The Blocking Filter diagonal must always be used with the LUNT telescope or filter for solar

observing.

Install the LS40THa telescope on a astronomical mount or on a photo tripod.

Pull the blocking-filter diagonal out of the focuser by about 15mm and then tighten the clamping screw on

the side of the focuser.

First use an eyepiece with around 25mm focal length to have the largest possible field of view. Point the

telescope at the sun by using the sol-searcher. There is a small hole in the front of the sol-searcher, which

projects the sun onto the back of the white ground. When the sun is visible in the center of the white ground,

look through the eyepiece. Do you see a fuzzy round red ball? If not, make sure you have removed the dust

cap from the front of the telescope. After some trial and error the Sun should appear in the eyepiece.

Focus: It is amazing how many people walk up to a solar telescope and take a quick look thru without ever

focusing. Course focus is achieved by moving the diagonal drawtube in and out. Fine focus is achieved by

the Helical focuser. Focus so that the edge of the Sun is as sharp as possible.

Tuning: On the filter housing installed at the telescope front, there is a small

wheel, half embedded in the tube. Move the wheel all the way to the left, do not

move it too much against the stop! While looking through the telescope, slowly

turn the wheel to the right. After a few turns, you should see prominences at

the edge of the sun, and structures will also become visible on the surface. If

the wheel is turned too far, the prominences and other structures disappear

again. Turn the wheel back again in the other direction until the prominences

are at their most contrasting. When the most detail is visible, you have tuned

the system to the H-Alpha wavelength of 656.28nm. Once set (tuned), you do

not need to change the setting during observation.

The Etalon of the LS40THa is tilted rather quickly as you turn the wheel. Therefore, turn this wheel very

slowly to avoid missing the optimal tuning point.

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, for example a

prominence. 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.

Produkt Specifikationer

Mærke:	Lunt Solar Systems
Kategori:	Kikkert
Model:	LS40THa

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