Moon filter and eyepiece

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Kaki Flyer
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Joined: Thu Nov 25, 2004 9:24 pm

Moon filter and eyepiece

Post by Kaki Flyer »

Can someone tell me where can I get cheap & good moon filter? And which eyepiece (barlow 2x or 3x or 6mm) is best to use with FS114 scope? What is the diff between the above eyepiece?
And anybody selling?

Thanks.
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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 »

Hi,
Your First Scope 114 is the long tube one or the short tube one??

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
Kaki Flyer
Posts: 21
Joined: Thu Nov 25, 2004 9:24 pm

Post by Kaki Flyer »

I got the long tube one, as advice by fellow friends here :).
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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,
What eyepieces does it come with?? 20mm and 10mm SMA or plossl??

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
Kaki Flyer
Posts: 21
Joined: Thu Nov 25, 2004 9:24 pm

Post by Kaki Flyer »

Yes, 20mm (45x) and 10mm (90x).
2 x Barlow = just 2x ?
Kaki Flyer
Posts: 21
Joined: Thu Nov 25, 2004 9:24 pm

Post by Kaki Flyer »

BTW, what is diagonal and what is it use for? Is it another kind of eyepiece? Thanks.
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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,
Yes, 20mm (45x) and 10mm (90x).
Then just get a 2x barlow will do... it will give your scope maximum practical magnification 180x. If you really want another eyepiece, I got a Celestron 15mm on sale which will give you 60x and 120x when use with 2x barlow.
BTW, what is diagonal and what is it use for? Is it another kind of eyepiece? Thanks.
A newtonian don't need to use a diagonal. It is normally use by a Refractor/SCT/MCT for easy viewing when the scope is pointing at a high angle.

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
Kaki Flyer
Posts: 21
Joined: Thu Nov 25, 2004 9:24 pm

Post by Kaki Flyer »

Can I say that Barlow is actually an adaptor to an eyepiece? Then isn't a 3x barlow better than 2x?

Thanks I don't need somethnig inbetween, maybe I should look for a barlow first.

Thanks.
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weixing
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Joined: Wed Oct 01, 2003 12:22 am
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,
Can I say that Barlow is actually an adaptor to an eyepiece?
Check this website for more information on what a barlow do: http://www.belmontnc.4dw.net/optics.htm#Barlows
Then isn't a 3x barlow better than 2x?
That depend on what magnification you require. For example, if you use your 10mm eyepiece with a 3x barlow, you'll get 270x which IMHO is too high magnification for your scope in Singapore sky.

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
Kaki Flyer
Posts: 21
Joined: Thu Nov 25, 2004 9:24 pm

Post by Kaki Flyer »

Thanks. :)
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