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Thread: Newbie

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    jdc75's Avatar
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    Default Newbie



    Hi, I've been lucky to have been given a skywatcher telescope which i think is a 130pm newtonian reflector with an EQ2 mount. The thing is it has only got one eyepiece which is super 10 long eye relief. I just need some advice on eyepieces to purchase so i can see planets and galaxies to the potential of the telescope. I am totally new to this astronomy thing so go easy on me

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    Hello jdc, and welcome to Astronomy Forum! You are lucky indeed to be gifted with such a nice scope to start off.

    Eyepieces are a very deep and broad subject, and what you will like best for your scope will depend on subjective factors like the focal length of your scope, budgetary factors and on and on. In your shoes, I'd arrange to get your scope to a star party hosted by a local astronomy club. Get to know some new friends, and ask their advice. Even more important, ask if you can try some of their ep's in your scope.

    That said, I'd go for inexpensive (unless your pockets are "deep" ) long focal length ep's which will give you widefield views, maybe a 30mm to start and go from there.

    Again, welcome and clear skies!

    Bob
    6 inch F/5 GEM mounted reflector

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    Hello BobDob and thanks for the welcome and reply, I'm presuming the focal length is 900 as it says on the side F=900 ?? I've had a look around for a club but there seem to be none local to me but i'll keep looking! I probably just need something to get me started. Whats a barlow eyepiece and is the lense i've got a powerful one or is there better eyepieces to fulfill my goals of getting good images of planets etc. I've seen saturn through this eyepiece but it was tiny and i was abit disappinted but happy that i could see it! Sorry for all the questions as i havn't a clue.

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    Your questions are good ones and no apologies needed. Your scope is right at f/7 (objective diameter devided into focal length of the optical train), which is reasonably good for widefield observing. Shorter f/l's give wider views, longer give more narrow. Planetary views are better with longer f/l's. You will often hear the term "planet killer" applied to scopes with f/l's of f/10 or longer. So, don't hope for these results from your scope.

    Your 10mm eyepiece is pretty powerful. That is, it is good for more detailed views of any given object. Generally speaking, viewing conditions will determine the guality of observing on any given night. The better the conditions, the higher power (shorter focal length) ep's you can use without the image degrading.

    The barlow lens will double (better) or triple (not as good, in my opinion) the power of any given ep. So, it serves to increase the number of choices available to you for the conditions at the moment.

    If you have the budget for it, there are basic eyepiece sets, some of which include a barlow lens, which will contain a range of f/l's. Orion, Celestron, Meade and others market them. You can often pick them up used from forums such as Cloudy Nights or AstroMart. Usually, the are being sold by AA's who are getting rid of their starter sets and going into more expensive, higher quality ep's.

    I'm not the resident expert with all of this. Others will be along and contribute, I have no doubt. If you have more questions or need clarification of the above, fire away.

    6 inch F/5 GEM mounted reflector

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    Thanks again BobDob, that has helped alot!

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    Hi jdc75 ...Welcome aboard the forums ...Like bob was saying getting a starter set is a good idea if you can pick up a set used ...But stay clear if you have to buy a set new ... They are not worth the money when you have to pay full price ...Another thing to consider is a decient 40mm wide field eyepiece , When you use this with a barlow you would have a 20mm eyepiece ...Add that to your 10mm and you could use that with a barlow and have a 5mm eyepiece ...Baiscly a barlow doubles your eyepieces so if you got one and a good barlow you would have 4 eyepieces .....If you get a barlow though get a quality one as you have to look through these and cheap ones will have poor views... You might check these guys ... Agena AstroProducts - Telescopes, Eyepieces, Binoculars and Accessories for the Astronomy Enthusiast with FREE US Shipping
    16in Night sky
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    classic Big-mac , Meade eye pieces with a few odd balls thrown in ...
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    Jdc75 welcome to the forum. you have some very solid advise already, A planisphere would help also & download a program called Stellarium. It is free and works great.

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    Hi jdc75,

    Welcome to Astronomy Forum.

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    Hi jdc, welcome to the forum.
    "Folks are basically decent, conventional wisdom would say. Well we read about the exceptions in the papers everyday." -- Neil Peart

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    Hi JDC. Welcome. All good advice from the other members. When I got my Orion 120mm refractor it came with the basic Orion 10mm and 25mm Sirius eyepieces. I used them for awhile before I made any decisions on upgrading. Much of what you can do is based on seeing conditions at your site. I actually used the 25mm a lot more than the 10mm because of viewing conditions. I hunted around with the 25mm with the wider view. I used the 10mm for brighter objects like the moon and planets. Just some perspective from another beginner. Len
    Len
    Astro Tech 150mm mak f/12 -
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    8 inch reflector f/4.9 - VRC8 (RC Mod for Mallincam)
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    TV Radian 6 mm / Baader Hyperion Eyepieces 8,13,17,24 mm / Meade SWA 28,34 mm/ES 82 11mm

 

 
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