Solar Filters

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kingkong
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Joined: Wed Mar 24, 2004 4:33 pm
Location: Borneo

Post by kingkong »

weixing wrote: Before you mount on your telescope, check the filter against the sun.. hold the filter in front of the sun at one arm length. If there are holes, you should see a pin point of bright light on the filter.
ah. of course. :wink:
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Kamikazer
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Joined: Wed Oct 08, 2003 3:35 pm
Location: Hinamizawa

Post by Kamikazer »

are solar filters required for solar projection on a cardboard?
K.L. Lee
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weixing
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Favourite scope: Vixen R200SS & Celestron 6" F5 Achro Refractor
Location: (Tampines) Earth of Solar System in Orion Arm of Milky Way Galaxy in Local Group Galaxies Cluster

Post by weixing »

Hi,
are solar filters required for solar projection on a cardboard?
No... you should not use a solar filters for solar projection. But this method is not suitable for scope that use mirror, because the heat may damage the mirror.

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
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ChaosKnight
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Joined: Sun Oct 05, 2003 6:54 pm

Post by ChaosKnight »

kingkong wrote: next thing is how to aim....?
can use a piece of cardboard behind the finder scope. stand in front of the finder scope with back to the sun. and use the projection on the paper to aim.
probably have to close off or remove the finder scope when observing through the eyepiece. otherwise may get zapped. :shock:
What i do is to remove the eyepiece, then aim through the tube. You should be able to see one big bright patch when your scope is pointed at the sun.
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weixing
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Favourite scope: Vixen R200SS & Celestron 6" F5 Achro Refractor
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Post by weixing »

What i do is to remove the eyepiece, then aim through the tube. You should be able to see one big bright patch when your scope is pointed at the sun.
Hi,
I personally do not recommend anyone to use this method... it is extremely dangerous!!

I hope anyone who observe the sun use the proper equipment, method and observe all safety precaution... Please remember that you got only one pair of eye.

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
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fizzy123
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Location: Tampines

Post by fizzy123 »

Actually to aim at the sun during solar projection, just aim the scope normally and observe the scope shadow, the scope is aiming at sun when the shadow is the smallest and most defined. :wink: :roll:
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ChaosKnight
Posts: 293
Joined: Sun Oct 05, 2003 6:54 pm

Post by ChaosKnight »

weixing wrote:
What i do is to remove the eyepiece, then aim through the tube. You should be able to see one big bright patch when your scope is pointed at the sun.
Hi,
I personally do not recommend anyone to use this method... it is extremely dangerous!!

I hope anyone who observe the sun use the proper equipment, method and observe all safety precaution... Please remember that you got only one pair of eye.

Have a nice day.
I hope i didn't cause any misunderstanding. i aim through the tube with a full-aperture solar filter in place. Why don't you try it. i find it better than the shadow method.
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