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Question: What is the sequence of placing Barrow Lens, Eye Piece and the Filters in the telescope( physically)? Is combining multiple filters useful? I own NexStar 130.
Document: Bought this kit for a Celestron NextStar 8-inch SC scope. Most of these eyepieces are useless because the Celestron telescopes don't have the quality optics necessary to take advantage of their power. The most powerful eye piece (not lens or filter) would probably only be useful for looking directly at the sun (it's soooooo dark).
I own a Celestron NexStar SLT 130. I was looking for an eyepiece kit to expand beyond the two (9 mm and 25 mm) that came with the telescope. I have been very pleased with the kit. The eyepieces seem pretty good to me, though I am definitely on the amateur side of the spectrum. My only negative comment is that it would have been nice to not duplicate my existing 9 mm eyepiece (the kit comes with 4, 6, 9, 15 and 32 mm).
I am very happy with this as an accessory to my scope. My gazing experiences would be much less fulfilling without the plossl lenses especially. The filters are extemeley useful as well for planetary gazing. A must for a serious observer without the cash to pay for multiple lenses from $50 - $500, and even higher. The case is sturdy, well padded, and has room for addition peices, so it does better than just hold them and look cool.
I am happy with the purchase, this kit is awesome. All the various lens elements are good and filters are useful, only there was no extra hole cut in the sponge as shown in the pictures.
I'm not going to imply that these are the best eyepieces available but they are good eyepieces and they are incredibly affordable. They are essentially Celestron's "Omni" series Plossl eyepieces, which are their least expensive series and retail for $30 - $40 each. Just the eyepieces alone are worth the $100. The barlow lens is a quality piece but is fairly redundant with these eyepieces unless you have a very short focal ratio telescope.
The thing you attach to a telescope is called an "EYEPIECE" -- not a "lens".Secondly, any "set" of eyepieces is generally going to be 90 percent useless. That's because most of the higher powered eyepieces in the set will only get used once or twice -- until you finally realize that high powers are only useful on a telescope if you're in a VERY DARK LOCATION, with almost perfect sky conditions (an extremely rare combination!
The lenses and filters work well with the Celestron Nextron 130 SLT Computerized Telescope. I would have given it an excellent rating if the filters would work with lenses that came with the telescope, but the lenses don't have threads to attach the filters. The lenses that came with the kit have the needed threads. Celestron should include this information on their website.
Also the 8 and 6 mm lens I also can't focus clearly. No problems with the 32, 17, and 13 mm lenses. I thought is has to do with the telescope but using the factory 25 mm lens it works just fine. So I am returning this accessory and follow the advice of buying 2-3 high quality eye pieces for better optics.
good basic accessories for my Celestron NexStar 4 SE Telescope. reasonably priced for filters and magnifier. case and individual pieces are all of decent quality/construction. well made for a decent price point.
The 32mm is the best in the set, and probably the one you'll use the most.The 2X Barlow is of average quality, but can be very useful -- it'll turn the 32mm into a 16mm without cutting eye-relief (good, if you wear glasses).The Moon filter is a necessity if you want to do any lunar observing.
Answer: It is always better to keep the filter to the closest point from your eye. In this case, immediately below the eyepiece. Combining multiple filters may be useful to watch bright phases of moon and venus. For order sake, i would say Barlow, Filter, Eyepiece and Your Eye in order. The filters have thread which can help u screw and pile up. So Enjoy!!