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Found 86 results

  1. A question for all 8" dob users. What is the shortest focal length EP usable for the telescope, I have a 7mm nirvana which is fantastic, they do a 4mm EP which would give 300x mag, my scope has a maximum potential of 400x but would the 4mm be pushing it?
  2. SOLD - Morpheus 6.5 - 76° eyepiece. 1¼" and 2" barrel Purchased about a month ago, a really great eyepiece - so still in mint condition. Includes the accessories in the photos. Asking £130.00 posted RM signed for (UK mainland). PP gift or add PP fees + Full courier cost (delivery & insurance) elsewhere Francis Reason for sale: Prefer longer focal lengths giving wider fov's
  3. Hi, I have a skywatcher 200p dob and was hoping someone would be able to recommend an eyepiece with a wide field of view that would help finding objects and observing larger objects like the Pleiades. I have had a look at an explore scientific 30mm with 82° FOV, but was unsure if it would be good with my scope. Thanks Katie
  4. Hello. True beginner given an Orion Skyquest XT8 (1200mm focal length; f5.9). I have had to collimate (all sorts of fun that was) as the scope had been moved quite a bit over time. Believe I have it very near perfect but will star test. Scope came with an Orion 25mm Plossl eyepiece so I am exploring what range of additional eyepieces I would like. From what I’ve read this scope is capable of a theoretical 400x magnification. Again in theory that would take me to 3mm as limit of eyepiece. But then I read about exit pupil limitations and scratching my newbie head. The majority of what I see suggests .7mm exit pupil minimum...? But it appears I would need to buy a much larger eyepiece focal length to avoid too small exit pupil. I wear eye glasses so would be buying longer eye relief pieces in case that is relevant. Advice truly welcome. Neill
  5. It's been a week since Christmas. How about some reports on new eyepieces received as gifts (or bought for yourself)? To get things started, I received a 17mm ES-92 and have had a couple of chances to use it in both a coma corrected dob and a flat field short tube refractor. It's easy to use with eyeglasses, has a very wide field of view that can be seen all at once without straining, is as sharp at the edge as a Delos (which is to say as sharp as at the center), has no discernable field curvature, and seems to have nearly constant angular magnification across the field. The weight and size do have to be managed, but it is well worth the effort. I haven't tried it without coma correction or flat field correction or with a barlow yet, so no reports on those aspects yet. I measured the AFOV to be 92 or 93 degrees as claimed using reverse projection with a flashlight shining into the field lens. Usable eye relief was measured to be 17mm using the same technique, so just a millimeter less than my measured 18mm for the 10mm Delos. Overall, I'm so stoked, I hope to get the 12mm and other focal lengths as they become available.
  6. J_M_Franklin

    Adapter Required

    Hi all, not sure if this is the right place for this, but cannot decide which is the better one.. Here is my problem; I have an old Telephoto lens that is an 86mm achromatic and has a variable focal length of 600 to 1300mm. I have had this years and don't really use it anymore, it's no good for astrophotography as it stands but after some experimenting with various eyepieces jerry rigged in the end of the lens I have found it makes a very good and effective refractor telescope...and as I want a larger finder/secondary scope on my LX90 this would seem to be a good use for old equipment. The lens has a 42mmx0.75mm male thread on the end for the attachment of camera adapters. I have had a look for a female threaded adapter that would allow the use of either a single or interchangeable eyepieces on the lens. Does anyone know of any such adapter, or perhaps a couple of adapters that would allow the end game I want... Thanks everyone. Jim
  7. I Just bought a celestron astromaster 130EQ and I am still getting used to star hopping plus the red dot star pointer is a bit annoying. Will it be beneficial to invest in a 40mm eyepiece to make star hopping easier ? Will the larger field of view provided by the 40mm eyepiece be worthwhile ?
  8. Hey. Got a new 12 inch reflector and it takes 2 inch eyepieces. I have a 26 mm and a 32mm on their way. However, what would be the lowest useable eyepiece for it? Focal length is 1600mm (f/5.3). For example, revelation go down to 50mm, would this be of a use, or not? Also, what about going above 20mm, say a 15mm? Thanks.
  9. Thanks to recommendations from this forum, I recently purchased a Bresser AR-102s/600 refractor. (I apologise for the rubbish weather lately, it is obviously my fault. ) The supplied (1.25in) diagonal is very cheap, all-plastic construction. Even the barrels. And I would like to upgrade as soon as possible. This telescope accepts 2" accessories, so I want to begin by getting a decent diagonal, then upgrade eyepieces later. I had my eye on a William Optics 2" Dielectric Diagonal, but then saw an Altair Quartz Dielectric Diagonal 2" Push-fit for almost half the price. Altair also make a 2" Lightwave Premium Dielectric Diagonal, which falls roughly in the middle of the price range. I've heard very good things about the Williams Optics diagonal. My question is what are the Altair like. And is it worth spending the extra, for what is a relatively "budget" range OTA? Recommendations for 2" eypieces that I should consider are also welcome. Thanks.
  10. Hi all, I'm looking at buying a Skyliner 200p scope second-hand, but it doesn't included a mount or eyepieces. Is it possible to: - Pair this scope with reasonably a priced mount (<£100) or even a tripod used for birdwatching (do you need a specific mount for this scope?) - Get an OK set of eyepieces (<£50) used for seeing planets and some beginner DSO. - Advise me on a telescope mount and eyepieces compatible with the Skyliner 200p for the prices stated above. The reason i'm asking is because my funds are limited ATM, so i'd like to buy a decent telescope with the intention of upgrading its accessories as funds permit and my astronomical knowledge advances. Any advice would be greatly appreciated.
  11. Offered for sale is a Meade 5000 series 60 degree 9mm plossl eyepiece in excellent optical and cosmetic condition with original caps and box (sorry about the poor picture, but you get the idea). This line doesn't get the best reviews, but for a number of years this was my best high power eyepiece and is very good on axis. Personally I think that Meade were pushing it a bit at 60 degrees. If you treat this eyepiece as a normal plossl (with tight eye relief and a twist up eye guard that I have used) it's well built and optically better than the average. I've seen some nice Jovian detail with it, but once a 9mm Vixen SLV and recently Baader Morpheus made their appearance this eyepiece isn't getting much use and it's time to move it on. The price is £30 including postage and packaging within the UK. Payment by PayPal or cash on collection please. Please feel free to contact me with any questions. James
  12. Hi all I am putting together an oil-bath auto-collimator rig to check over my reflectors. It occurred to me to use an off-axis guider body and its pick-off prism to feed the light source in - no heath robinson pipe assembling. Then I can just use a positive eyepiece where the camera should go to examine the ronchi lines to estimate the optics quality. This raises the question - I would need to put the ronchi screen on the telescope side of the prism - say in a filter mount . Is this too far from the source ? Is the source to ronchi screen distance important ? Cheers Mike
  13. Celestron Luminos 82° 15mm Baader Hyperion 21mm. Celestron Luminos 82° 15mm eyepiece in mint condition -boxed - £50 -SOLD Baader Hyperion 1.25" 21mm eyepiece, never used, (I now have a nagler 22, while waiting for a clear sky) mint and boxed -£50 -SOLD Collection, or add £5 for postage per item. (also on ABS)
  14. Hi. I am new to astrophotography and want to start using an eyepiece camera with my Celestron eq130. Can anyone recommend a decent camera for a small budget, say £50. Also, do these type of cameras just fit into the telescope, or do they fit into a Barlow lens ??
  15. I have been reading that my 25mm 8SE Celestron eyepeice may not be very good in a Skywatcher 150P, and the supplied 10mm and 25mm are going to be average at best. I've also been reading that 4mm or 5mm is usable in the 150P, BST or TMB Planetary are names that seem to crop up a lot, but then someone mentioned Celestron X-Cel LX. I have not upgraded my standard 8SE 25mm yet so could certainly consider doing that, but would mostly like to get a nice high magnification eyepiece to go with the 150P which should be arriving at my door any minute now. Would the 5mm X-Cel LX be a good choice? What would be a good matching barlow to use with the 150P (and 8SE, if possible)? The only barlow I own is the one that came with the ST80, so, yeah.. Thank you.
  16. Hi everyone, I just bought my first telescope, a Celestron NexStar C8, and have been having a wonderful time learning to use it. I bought it used, and it came with enough accessories to get me going. However, I have recently been searching for nebula filters, and have learned a lot about both filters and eyepieces from reading through the forums. My question is this: My scope came with a set of eyepieces (the Celestron eyepiece case, 1.5") and a couple others that are 1.5" as well. As I began researching eyepieces, I see that it is common to have 2" sizes as well. Would my scope accommodate a 2" eyepiece? If so, are there any benefits to me using a larger eyepiece? The 1.5" filters and eyepieces are a little less pricey, but if I can increase my scope's performance through using 2" eyepieces I will strongly consider doing so. Thanks for any and all info!
  17. ajc0502

    Eyepieces

    Hi everyone! My telescope came with 2 eyepieces, a super 25mm and a super 10mm. The other day I was looking at the moon (using my super 25mm and a x2 Barlow as always) and I decided to swap round my super 25mm to my super 10mm and it was a much better image! I could see right into the surface and view the craters inside the craters! Can someone please explain why the smaller diameter eyepiece works better? Thanks
  18. Hey, whenever I clean my eyepieces or filters, theres always a mark left from the cleaning tissue. What am I doing wrong or is this normal? Also, Im using optical grade tissue paper. Is it better to use a microfiber cloth? Thanks for the advice.
  19. I've upgraded to a set of BST starguider eyepieces so I have the following HR Eyepieces for sale. All in excellent condition, £20 each plus postage 25mm, 9mm, 5mm
  20. My old Celestron X-Cel 10mm is OK for the 8SE but perhaps I would want something better in this range for the f9 100ED. Suggestions? I don't want to go mad, maybe up to around £100. I have a 5mm X-Cel LX which ought to be OK, I think. If I can stick to the Celestrons it should maintain some consistency in my collection, are the Luminos's a good choice for this scope? Should they also improve views in my 8SE and 150P?
  21. Hey Everybody! I would like to know, what eyepieces do you use. Im planning on to buying new ones. But i dont want anything cheap.(Not really expensive either) (Max +-160 dollars). I would like to have some eyepieces with big field of view for nebulas, galaxies etc. , and then some eyepieces which are great for observing planets with lot of details. Some good eye relief would be great too. My telescope is Dobson 203/1200. Thanks for your suggestions!!!
  22. Hello! I recently bought a Vivitar 76700 on a whim because it was on a sale. I've been able to get it to work alright, but was having trouble viewing the moon because of its brightness, so I ordered a moon filter. In doing research I found that 1.25" is the most common and it seemed that's what would fit mine. It arrived today and in trying to test it, the moon filter is too big to be compatible with any of the eyepieces/tubes. I have googled endlessly and 1. cannot seem to find any smaller moon filters or 2. find any explanation for why it doesn't fit the eyepieces that came with the scope, or really any extra information on the telescope. I know that most of the reviews say this model is not great, but I'm not using it for anything serious. Like I said, bought it really cheap on a whim. I'd like to be able to use this moon filter and not have to return it or get a new one. I read a review that said this telescope model is compatible with 1.25" eyepieces but I don't see how that could be the case because the 1.25" moon filter seems too big for any part of the viewing apparatus. Does anyone know anything more about this particular telescope? Or if there is some kind of adaptor I could use to make this work for me? Thank you!
  23. Offered for sale is an Explore Scientific 68 degree Maxvision 24mm eyepiece in excellent optical and cosmetic condition with original caps and box. This is the 1.25" eyepiece that sold out some time ago. The performance is very good, but I have a 24mm Televue Panoptic that I prefer and this eyepiece isn't getting used enough to keep. The price is £50 including postage and packaging within the UK. Payment by PayPal or cash on collection please. Please feel free to contact me with any questions. James
  24. Hello all! I am a total noob and I have an eyepiece and a Barlow lens question: I have the Gskyer AZ70700 Refractor Telescope that I bought from amazon for my father and we have been using it for a week. It came with the 10 and 25mm eyepieces and a 3x Barlow lens. My father's old "BRESSER TRAVEL 20-60X60 SPOTTING SCOPE" that our cat destroyed had a zooming option that my father loved so after some research, I've also ordered the "Celestron 8-24mm Zoom Eyepiece (1.25")" from amazon and I hope it will work well with the telescope when it arrives in a week. I also assumed it would be a better quality eyepiece than the eyepieces that came with the telescope. Now my question is: Do you think a 5mm eyepiece would work well with my telescope? If so, what is the best 5mm eyepiece that I can buy below $30. Another question I have is that the 3x Barlow Lens that I have is making the view blurry and not clear like when I don't use the Barlow lens. Do you think a 2x Barlow lens would be better for our telescope? If so, what is the best 2x Barlow lens that I can buy below $30. I saw 2 Barlow lenses that were made by SVBONY and Solomark that are around $16 but I don't know if they are the right ones for our telescope and I wouldn't know which one to buy. I assume maybe I won't need to buy the 5mm eyepiece for better viewing if the 2x Barlow lense will work with my 10mm eyepiece or with the Celestron 8-24mm Zoom Eyepiece. What do you guys think? I would really appreciate any answers.
  25. Hey guys, I recently purchased the Orion XT6 and I've been very pleased thus far. I've been using a 25mm eyepiece, and was slightly disappointed. I'm very new and didn't realize all the technical stuff about eyepieces. I'm very much into viewing things like the planets, not as much deep space. (Jupiter and Saturn especially) So, that being said, should I get a 10mm, a x2 Barlow or should I just get something else? I'm really looking forward to seeing your suggestions! (If you have any photos of Jupiter or the planets using one of the eyepieces with no added zoom from the camera, etc that would also be great) cheers, Tom
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