help

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help

Postby clare louise » Fri Jul 24, 2015 8:49 pm

Hi
I am new to astronomy and have just got a celestron astromaster 114
I need some more lenes as i would like to eventually view planets and stars
Thanks Clare
clare louise
 
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Re: help

Postby uea74 » Sun Aug 02, 2015 3:35 pm

114mm dia, f/8.8 (near enough), focal length 1000mm.
It should have come with a 10mm and a 20mm eyepiece, they are likely Hygens, doubt if they are MA's.

Depends on how much you want to spend per eyepiece.
Plossl's are the obvious, they are sort of £25 upwards.
I will ignore the ones you have, it is just easier.
I would have said an 8mm, 10mm, 18mm or 20mm and a 30mm or 32mm.

The 8mm will give 125x and IF it delivers a clear image you will see Saturn and the rings.
10mm, 100x, for when the 8mm does not deliver the goods.
18mm for sort of middle ground,
30mm for starting out to locate things.

One proviso: The scope has a spherical mirror and the scope may or may not do well at 120x. So you may want to ignore the lure of magnification and go for a 10mm and a 12mm instead of the 8mm and 10mm.

When Jupiter comes back a 12mm is enough to see that.
Mars will remain a little disc whatever.

Add a location - town - as there may be an astro club within reach.
uea74
 
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