Hallo to you,
Can you let me know,
1. Does this Zhumell spotting scope with an angled eyepiece, or any similar other model, have ED aperture lens.
2. is there any significant chromatic aberation with this model
A big plus for striking blows for literacy but should not
your own text set an example,
(it is to 'writing' not 'caps' that 'all' refers) hence
"writing ALL in caps" ,
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Re: General suitability for birding
A) You have not stated to which model of Zhumell scope (of which I have never heard) this refers, but the new Swarovski has not only superb optical quality, but also a binocular eyepiece.
B) Thank you for stating the blindingly obvious in the second part of your query, which appears to be in response to some previous interaction between yourself and Fixya, the details of which you have not indicated.
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You don't say whether this is an astronomical telescope or a terrestrial one (spotting scope). However, I have a Vivitar scope which was sold as an astronomical scope, but is actually a spotting scope, although it uses astronomical style eyepieces, so...
I am not sure that it is the eyepiece you want, either. It is hard to break an eyepiece, but much easier to break the eyepiece mount or diagonal mirror fitting.
Most astronomical telescopes use a standard fitting eyepiece with a 1.25 inch outside diameter barrel. You can measure the mount where the eyepiece goes to make sure that yours is this size, then search on eBay or Amazon for "1.25 eyepiece" and you will find many available. It doesn't have to be made by Vivitar, any make will fit.
The other variable will be the focal length of the eyepiece, which is what determines it's power. The power of the scope will be the focal length of the main objective divided by the focal length of the eyepiece, so a 9mm eyepiece will give a higher magnification (and be dimmer and harder to focus and find objects) than a 20mm eyepiece. It is usual to have two or three different focal length eyepieces for viewing different objects.
I'm not sure of which telescope and finder you have but I can give you some general instructions.
If your finder scope is is the type that is like a tiny telescope then you should see a set of cross hairs when you look into it. The goal is so that when the object is in the center of the cross hairs you should be able to find it in your telescope eyepiece.. To do this you need to align the finder scope,
I usually use a terrestrial object to do this. I use these because they don't move like stars do. You can choose road sign, a spot on a tree or a street light though that can disturb your night vision. Aim your finder at this object and center it in the finder. Check to see if it is in the eyepiece of your telescope. Use a low power eyepiece to give you a wider field. The low power eyepieces have higher numbers such as 25mm. If the object is not in your eyepiece find it and center it. Check your finder again. You need to adjust the finder so that the object is in the center of the cross hairs.
There are usually 1 to 3 thumb screws to adjust this. If there a three you go back and forth until it is centered. Check your eyepiece again to make sure the scope is still centered. You can use a higher power eyepiece (lower number) to refine this since it displays a narrower field. Just repeat the process.
Once this is done, you find the object in the sky in your finder and center it and it should be there in your eyepiece.
sounds like it was designed to use only the eyepiece that came with it. here is an idea...mount the scope on a tripod with no eyepiece in it...now take an 1 1/4" eyepice and place against the scope where you would put the eyepiece ..try to focus..if you cant, then slowly bring the eyepiece away from the scope till you see a sharp image..im sure a machine shop can make a sleeve to screw into your scope and hold 1 1/4" at that point.any questions i can answer call me email@example.com 5088331232