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Thread: Eyepiece or filter..

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    Default Eyepiece or filter..



    G'day everyone. Merry Christmas to all!!

    My kind family have given me some vouchers for an astronomy shop in the uk and I'm not sure what to use it on. I'm very much a beginner building my equipment up. I have a skywatcher 200p eq5 scope and I've added an raci finder scope and dual speed focuser. I have the stock 10mm and 25mm eyepieces and 2x Barlow that came with the scope. I've also got some cheapish series 500 plossls from a uk shop, a 25mm, 15mm, and 6.5mm, although I don't tend to use them. I also have a moon filter. On my rather long list of equipment to buy in the future are good eyepieces and a few filters. I'm thinking either an ES 82 11mm eyepiece or a badder uhc-s filter but I don't know which will show me more compared to what I already own. I do want a better set of eyepieces but will the filter be best to get first? I'm working on a few astroleague programmes including southern sky telescope and lunar and sun spots.

    Any opinions would be great.

    Kev

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    Default Re: Eyepiece or filter..

    Hi Kev. Here's the way I look at it: A filter isn't going to show you what you can't already see. It's just gonna improve the contrast some. An eyepiece however, that is where the rubber meets the road, so to speak, and an eyepiece will improve the view, whether by filling a needed gap in focal length for your collection, or by providing better eye relief, a sharper, brighter view, wider FOV, whatever the case may be.

    I'd put my money on an eyepiece. The filter can come later once you have a good EP to put it on.
    Bryan

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    Default Re: Eyepiece or filter..

    Ditto on the eyepieces.
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    Default Re: Eyepiece or filter..

    That's exactly the kind of explanation I was looking for. Cheers guys. I shall be ordering later this afternoon.
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    Default Re: Eyepiece or filter..

    The only problem now is...the shop I have vouchers for (and most other shops) is out of stock of the ES 82 11mm. I mostly use my stock 10mm so I'm thinking maybe I should order the 8.8mm now and see how I go. Hmmm. Does anyone own and use both the 11mm and 8.8mm or is I a case of one or the other?

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    Default Re: Eyepiece or filter..

    Quote Originally Posted by shackybracky View Post
    The only problem now is...the shop I have vouchers for (and most other shops) is out of stock of the ES 82 11mm. I mostly use my stock 10mm so I'm thinking maybe I should order the 8.8mm now and see how I go. Hmmm. Does anyone own and use both the 11mm and 8.8mm or is I a case of one or the other?
    I've got them both, as well as the 14mm. I really like the 11mm. I do a lot of galaxy hunting. I typically start out with the 18mm, and work my way down in focal length through the series and evaluate how each enhances or detracts from the view. I often end with the 11mm.

    I must say, I've only recently added the 8.8mm to the mix, and have yet to have a decent first light experience with this EP. I do anticipate it fitting in nicely with the 11mm to add that extra bit of oomph with my galaxy observing (as well as with other targets). I'm confident it will serve me well and earn it's place in my EP case.

    Probably doesn't help you much though.
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    Default Re: Eyepiece or filter..

    Not really

    I've been able to use my 10mm with the Barlow quite a bit recently and also barlowed the 6.5mm plossl on Jupiter and had the best view I've ever had of the planet so I'm tempted to try the 8.8mm. I could order the 14mm but I've read mixed reviews on it.
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    Default Re: Eyepiece or filter..

    Eyepiece for me any day . I would just wait until the one you want comes into stock rather than buying something else :-)
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    Default Re: Eyepiece or filter..

    I agree with Bryan about the eyepieces. I have the ES 82 24 through 4.7, and I think the 11 and 8.8 will do quite well for you. Regarding the ES 82 14mm, I am sure most of the negative comments you've seen may have had to do with field curvature (FC). That does seem to be the thing most will pick on. It does indeed have FC, but I will say it does not bother me at all, and I find that all the positive attributes of the eyepiece far outweigh the minor bit of FC that I detect. That said, I know as individuals we each react differently to eyepiece aberrations and some find it very offensive. In my case I didn't even notice it until I specifically went looking for it. As a comparison, the Pentax XW 14mm also suffers from FC yet is still quite popular.

    I will differ slightly with Bryan on the filter stuff. Certain filters can show you something that you might not otherwise see - in certain cases. However, the Baader UHC-S is not one of those certain filters. It is a light pollution reduction filter, broad banded in nature. In areas with moderate to low light pollution levels it can give you a very subtle boost in contrast, and when I say subtle - I mean an inexperienced observer would likely not see any difference. It will not allow you to see something that you couldn't already see before. Also in areas with significant light pollution they tend to become useless because a high level of sky glow will overwhelm the filter.

    I would never recommend filters for beginners. One needs to get settled in with eyepieces and learn their equipment, and the sky of course. Then if you really feel you want to add filtration, I would go for a narrow band nebula filter such as the DGM Optics NPB (narrow pass band) filter. It can help boost contrast on emission and many planetary nebulae.

    Hope some of that helps, and you have fund spending your vouchers!
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    Default Re: Eyepiece or filter..

    Thanks for all the replies! It really has helped. I'm definitely going for an eyepiece, just not 100% sure which one. I've emailed the shop to see when they might have the 11mm in stock but they're closed until new year. I feel i'll eventually use both and chose the 11mm first because it was closer (very slightly) to the 10mm stock eyepiece I've been using than the 8.8mm. Even if I order the 8.8mm today it won't get posted until the shop opens again and I'll find out about the 11mm then so I'll wait and see what they say.

    Thanks again.

 

 
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