saving money to buy eyepiece

garygoh · Post by **garygoh** » Sat Nov 29, 2003 9:22 pm

I am interested in buying a 4mm eyepiece for observing the moon, does anyone has any recommandation ? My budget is $100.

Post by **Airconvent** » Sun Nov 30, 2003 12:17 am

garygoh wrote:I am interested in buying a 4mm eyepiece for observing the moon, does anyone has any recommandation ? My budget is $100.

4mm means high magnification...so optics quality must be impt. Suggest you save for a radian instead! ...

ps...no prize for guessing I am a Radian fan....

Post by **weixing** » Sun Nov 30, 2003 1:38 am

Hi,
If you have a 2x barlow, get a 7.5mm Super Plossl or a Sky-Watcher 9mm or 6mm Wide Angle eyepiece. It will give you better eye relief and fit your buget.

Hope the information is useful.

garygoh · Post by **garygoh** » Sun Nov 30, 2003 8:34 am

But is there anybody selling any 4mm radian type of eyepiece ???

Debash · Post by **Debash** » Sun Nov 30, 2003 5:33 pm

Check out Astromart..http://www.astromart.com/classifieds.as ... ...selling for US$190+

Must have deep pockets to buy Televues.....certainly not for a beginner

Post by **weixing** » Sun Nov 30, 2003 8:51 pm

Hi,
I think Astro Scientific Centre in Omni Theatre got sell the TeleVue radian eyepiece. Also, please remember that the 4mm radian eyepiece use 7 elements, so the image may be not as bright as a Plossl or Orthoscopics eyepiece (no problem if you use it for viewing the moon) and prepare to pay more than S$300 to get it.

Anyway, I saw you got a Sky-Watcher 102, is it MCT or refractor ??

By the way, the Astro Scientific Centre don't open in monday. Hope the information is useful.

Post by **Airconvent** » Sun Nov 30, 2003 11:55 pm

weixing wrote:Hi,
I think Astro Scientific Centre in Omni Theatre got sell the TeleVue radian eyepiece. Also, please remember that the 4mm radian eyepiece use 7 elements, so the image may be not as bright as a Plossl or Orthoscopics eyepiece (no problem if you use it for viewing the moon) and prepare to pay more than S$300 to get it.

Anyway, I saw you got a Sky-Watcher 102, is it MCT or refractor ??

By the way, the Astro Scientific Centre don't open in monday. Hope the information is useful.

Be prepared to pay a significant premium if buying from astro scientific.
I think Elton is selling his...maybe you can check with him ?

rich

harlequin2902 · Post by **harlequin2902** » Mon Dec 01, 2003 1:02 pm

Be prepared to pay a significant premium if buying from astro scientific.

S$585.00 per Radian from A.S, the last time I saw.

addy · Post by **addy** » Mon Dec 01, 2003 7:18 pm

garygoh wrote:I am interested in buying a 4mm eyepiece for observing the moon, does anyone has any recommandation ? My budget is $100.

Check on Yahoo auctions... Someone is selling a Meade 4mm plossl for SGD60.. Check it out.. fits your budget perfectly.. But I second Weixing's advice about the eye relief.. Get a 2x barlow and a 7.5mm or 9mm eyepiece.. better eye relief.

clear skies..

Post by **acc** » Mon Dec 01, 2003 9:13 pm

Hi Gary
Think better not get a 4mm plossol or orthoscopic eyepiece as the eye-relief is extremely tight. The lens is real tiny as well, and can make observation a painful exercise for ur eye. U may end up looking like this

I second the 2x barlow and a 9mm ep. Or u can consider one of the Siebert optic eyepieces at www.siebertoptics.com

cc

SingAstro

saving money to buy eyepiece

saving money to buy eyepiece

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