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Thread: Highest useful magnification

  1. #11
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    Default Re: Highest useful magnification



    Thanks, maybe I should have purchased a Dob instead, this is my first scope. Are Dobs better for deep sky observation? I really wanted a Mak instead of a Schmidt, but amazon was out of them. In your opinion what is better a Mak or a Sch? Sorry maybe to many questions at once.

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    Default Re: Highest useful magnification

    M31 should be visible even in somewhat heavy light pollution. M31 is a very bright galaxy.

    It doesn't really matter if you're in a valley or on a hill. You don't want to be looking near the horizon anyway. I try not to look at anything until it is at least 30 degrees above the horizon. The higher the better. The higher in the sky an object is the less atmosphere you have to look through. That thick atmosphere can greatly affect views, especially low on the horizon where it is very thick.

    I'd go for a dob over a schmidt/mak. It sounds like you are interested more in galaxies. If that's the case you'll want aperture. Dobs typically cost less per inch of aperture than other scopes which means you can gather more photons for less money.
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    Default Re: Highest useful magnification

    Thanks, what is a Globular?

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    Default Re: Highest useful magnification

    Quote Originally Posted by Jaminrc View Post
    Thanks, what is a Globular?
    Referring to a globular cluster: Globular cluster - Wikipedia, the free encyclopedia

    M13 s one the most famous globular clusters in the night sky and right now is prime time for observing it. It's in Hercules. Give it a try.
    Messier 13 - Wikipedia, the free encyclopedia
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    Default Re: Highest useful magnification

    Thanks , so barlows are alright on the planets right. I was very interested in jupiter but, it is only visible one hour before sunrise. Is it still possible to view it then? If not when will be able to get a good view in the following months?

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    Default Re: Highest useful magnification

    Thanks again.

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    Default Re: Highest useful magnification

    Thanks I will give it a try thanks for the nfo it is very helpful because I really don't know what to view that is currently in the night sky.

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    Default Re: Highest useful magnification

    Jupiter will rise earlier and earlier every night. Eventually, Jupiter will be up at a reasonable time.

    If you want to figure out what's in the night sky on a given night take a look at these:

    Download Stellarium. It's free software and it works very well.


    This site will show you the available targets in the night sky for a particular time, position, etc. It has useful filters that allow you to customize observation lists. - Tonight's Sky
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    Default Re: Highest useful magnification

    Quote Originally Posted by Jaminrc View Post
    Thanks, maybe I should have purchased a Dob instead, this is my first scope. Are Dobs better for deep sky observation? I really wanted a Mak instead of a Schmidt, but amazon was out of them. In your opinion what is better a Mak or a Sch? Sorry maybe to many questions at once.
    I own an 8" dob. It may not have all the bells and whistles, but I spend a lot more time hunting down and viewing my targets rather than spending a lot of time just trying to figure out how to operate my scope. That doesn't mean that the other types of scopes aren't good. It just means that I'm lazy, I guess!

    I also own a 2X barlow. To tell you the truth, it doesn't get much use. I prefer having a range of magnifications in my eyepieces instead. Just seems to be a little quicker and easier to just slip an EP into the focuser instead of messing with both the barlow and the EP's. Here again...laziness maybe. And the barlow does darken a bit what you're trying to see. It is useful at certain times and it's nice to have if needed, but a barlow isn't one of the things I'd set out to buy right off the bat.

    As for FOV's...I'll spend most of a viewing session using my Baader Hyperions that have a 68 degree FOV. They also have a generous eye relief(20mm) which is great since I wear eye glasses. I do have a couple of planetary eyepeices at lower magnifications, but aren't pulled out of the case often due to living in SW Missouri. The humidity and haziness really limits the seeing. Thus, limiting useful magnification.

    Galaxy hunting takes some fairly good seeing and the ability to capture quite a bit of light. My 8" does a decent job at the light capturing, but by no means does it do a great job. M81 and M82 are a bit of a challenge. But what a cool view when you can get both of them in the same FOV!! Andromeda is pretty easy. I'm lucky enough to live in the country and light pollution isn't too much of an issue. Andromeda can be seen naked eye as a smudge of light. It is big and it's neat to look at it's two friends that are in close proximity.

    One thing to remember, the best kind of scope is one that will get used.
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    Default Re: Highest useful magnification

    Thanks, I have stalarium, but is Jupiter visible at one hour before sunrise ? According to Skyweek it says it's rise is at one hour before sunrise. I have been outside at that time and there is a lot of light out then. I also have never tried to view it at that paticular time because, I figured that the light would mess things up. Thanks again any info would be appreciated.

 

 
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