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  1. #1
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    Default Lens and filter kits



    Hey everyone I'm pretty sure I figured out which first scope I want, the zhumell 8 in dob. Now I'm wondering if I should spend the extra money and get the telrad finder. and one of those lens filter sets. I was looking at the Zhumell and celestron sets. has anybody bought either of these sets and would you reccomend them? Or should I just wait and use the supplied lenses, and by separately? Any info would be great thanks.

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    Default

    Hi Nate.. I have not seen the filter sets, but I would like to put a good word in for the Telrad finder. I had a red dot finder that came stock with my telescope and hesitated on buying the telrad.. it's just another RDF right? It is worthy addition IMO, so much easier to judge the location of objects.. but then, I use software that supports Telrad rings. If not, there are many charts online that do. Sorry I have no links for them.

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  4. #3
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    Default

    Hi Nate ... As far as the accessories go , I would get the scope and eyepieces it comes with , buy a telrad finder and mabey a good barlow ...See how the eyepieces the scope comes with ...A barlow doubles the focal length of the scope so you are doubling the eyepieces you have ...I would not buy a eyepiece set if it were me ...I would get another low power eyepiece like a 40mm for bright wide field views ...
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  6. #4
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    Default A good barlow lens

    What would be a good barlow lens that won't break the bank but is still good? I'm going to buy a 8 inch dob. Any suggestions would be great.

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    Default

    Definitely the Telrad - it will probably be the best investment you make for the scope.

    The eyepiece/filter kits are generally disappointing. The widest plossls (30-ish down to about 17-ish) will get used, but the rest is a lot of high power plossls that have narrow fields, short eye relief, and produce more magnification than you will want on almost any occasion. Likewise, the colour filters are for specialized planetary viewing and most of them you will never use. Put that amount of money into one additional carefully-chosen eyepiece, or a decent barlow, or a single narrowband filter, and you will be much better off.

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    Default

    Telrad is the best choice.

    As far as filters go, for just observing, both Orion and Lumicon make very good filters. I, myself, use Lumicon filters--line and narrowband filters for deep sky objects to filter out light pollution and color filters for planetary observing. Only in advanced astrophotography would you want to put out the money for very high-end line filters such as those made by Astrodon. But with a Dob for just observing through the eyepiece you wouldn't need such high-end filters.

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    Default

    Quote Originally Posted by Nate View Post
    What would be a good barlow lens that won't break the bank but is still good? I'm going to buy a 8 inch dob. Any suggestions would be great.
    If the scope has a 2in. focuser i would get a 2in. barlow ...You can get 2inchers in 1.5 power 2 power and i believe 3 power ...Which ever barlow you decide on make sure it is "fully-multi-coated" The coatings allow more light to reach your eyes ....When you add a barlow to your optical light train , you are adding more glass so that will cut down on incoming light ...Fully-multicoatings have multiple coatings on all surfaces ....You would think coatings would cut down on the light entering but it is the other way around ... Clear skys to you nate ...
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    Default

    Hey nate, I'm in the same situation as you.
    I just bought my 8" dob, and I'm looking at some accessories.
    Like you I choose to go with the telrad.
    For a Barlow I was looking at the 2" ones, but they are half the price of my scope. I did find 1 2" barlow from university optics, but I'm not sure how good it is. In the end I decided to go with the Orion shorty 2x 1.25" Barlow for now, and when I get some money I'll buy the bigger one.
    I also plan on buying the Antares Variable moon polarizer filter, this one as slightly bigger options for variable polarization than the Orion one, which is why I choose it for only 3 dollars more.
    I also decided on the Baader Planetarium Hyperion eye pieces, sense I can only buy one at the moment, I'm having trouble deciding which one. With the eye pieces that come with the scope, the opening for your eye is very small. (10mm will be about 10mm opening) Which is very strenuous to look threw for any amount of time. The Hyperions have a 20mm opening on all models. Sense I'll be getting started by looking at the moon, and you can literally look at it for hours, just cruising around, the more comfortable eye pieces were a big factor to me. Plus it's something that wont need replacing you will always use it.

    Anyway, just my newbie 2cents.

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