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Found 116 results

  1. Hi, i have made a video where i show a coople of eyepieces that i use and like, and also show how a barlow works, compared to the "Powermate" from Televue. And how is the FOV affected when changing the magnification with different eyepieces? Feel free to comment and give me feedback - I hope you like the video! /Daniel
  2. I am looking for a Vixen HR 3.4mm eyepiece. I have a 2.4 and it is great on a good night, but usually a bit too much power for my FLT132. Is there a chance you have one that you don't use? Thanks for looking Ian B
  3. Gt my telescope based on recommendations here years ago. Its getting dusty though. Really just want to see as many planets in solar system as possible please. I read plenty but its too much to remember sorry. Struggled just looking at the moon Most things said barlows are a stepping stone. Can someone point out an eye piece on first light optics or something similar in UK please. Its for me and my 6 year old space obsessed son. Also a polarising filter if there worth it. Is a collimater cap as easy as a laser? I wont get round to making one so ill buy. Last step would then be plumbers tape on the eyepiece threads right? Thanks
  4. Hi, I'm just wanting some advice on the eye relief and the quality of the 6mm Omni ep. I have a Nextar 127slt MAK. Can someone please tell me if I should buy it? Thank you, Spacecake
  5. Hello, I am having a problem with a relatively expensive flat field eyepiece in a combination with a newtonian reflector. I am unable to achieve proper focus with that eyepiece because when I focus it on axis, the edges are blurry. When I focus it at the edge, the center field is out of focus. I don't want to mention the concrete type of this eyepiece because I received it with a spot on the bottom barrel, therefore I cannot be sure whether it has been dropped. This eyepiece has very good reviews on this forum. Optically it looks good and there is no rattle. My question is whether these flat field eyepieces are usable with newtonians as these telescopes doesn't generally suffer from the field curvature. Many thanks for help.
  6. Baader optical wonder solution is practically Isopropyl alcohol. Instead of £12 for a 70mL of it, buy a 1000 mL of Isopropyl alcohol for £22 (before pandemic it was only £5). They have also smaller bottles which will be cheaper of course. The Baader solution and Isopropyl alcohol don’t remove the toughest of fungi on optics, only a few of the less deep set ones can be treated with them. I have used both for cleaning eyepieces and on certain stage of cleaning several 8 to 12 inch mirrors. They both worked identical. When applied through an optical cleaning fabric, they remove ( dissolve) fatty oils and fingerprints on optical surfaces. I had cleaned a 12 inch mirror once which for some unknown reason had ice cream stain on it (cleaning followed standard operation procedure for cleaning coated aluminised mirrors).
  7. Hello everyone I've just bought my first telescope, a 10 inch Dobsonian, Saxon brand (same as Skywatcher). In daylight I've collimated it with a laser collimator. Also in delight I've centred the finderscope on a house on the horizon (probably 5 km away). The image is inverted and the left side appears on the right. I understand that's normal. The house is also centred in the eyepiece and the view is inverted and left appears right, as with the finder scope. BUT the horizon is at about a 60 degree angle ( see pdf sketch attached). Is this normal? Or am I doing something wrong? Or is there a problem with the telescope? Many thanks in advance Susan telescope views25082020_2.pdf
  8. Does anyone who has one of these zoom eyepieces know if there is a t-thread hidden under the twist-up rubber eye-cups like there are on some other zooms? I don't have a zoom in my set yet and don't want to break the bank. I just aim to use it mainly for visual e.g. being lazy with one 'no faff' eyepiece or when I'm being more dedicated, scoping out the seeing at different magnifications before changing to a dedicated eyepiece. I'd only use it for occasional photography but would rather buy one with a T-thread. For reference here are the different branded versions I can find: OVL Hyperflex version: https://www.firstlightoptics.com/ovl-eyepieces/hyperflex-72mm-215mm-eyepiece.html Skywatcher Hyperflex version: https://www.365astronomy.com/SkyWatcher-HyperFlex-7E-7.2-21.5mm-High-Performance-Zoom-Eyepiece.html I had read in the previous thread that the Lunt version of this zoom is also generic but the only one I can find looks quite different and is twice as expensive and has a different field of view so not sure about that? https://www.firstlightoptics.com/lunt-solar-accessories/lunt-125-zoom-eyepiece-72mm-215mm.html Thanks for any feedback (or any other recommendations for circa £100 zoom lens that might have a hidden T-thread)!!!
  9. Hi all, With the advice I'm getting here, I'm planning to start my hobby with Skywatcher Maksutov 102 telescope. There are several models with this optical design, BUT it looks like they all sold out! Almost all... FLO still could sell a Mak on the older EQ2 mount. https://www.firstlightoptics.com/maksutov/skywatcher-skymax-102-eq2.html What would yo say about this combination - is it an obsolete scope, or the same as modern versions? How it this mount? I gather it can be also used as Alt-As, right? And one more question, with this long focal length I think as a beginner I'm running into an issue of finding objects with it's FoV. What eyepieces would you recommend to add immediately to this scope? A good price/performance would be great! For instance, should I add a 0,5 reducer or a 35-40 mm eyepiece, should I immediately replace 10mm? I've read the great post of @The Warthog, so have an idea what focal lengths I'll need (10, 15, 25, 40). Just want to check your opinion what could be ideal price/performer. Thank you!
  10. Hi all I’m getting back into the hobby after some time away I always seemed to spend a lot of time switching between eye pieces so this time I was thinking of having just 4 ep to choose from as opposed to 12. I have a an 8”sct and was thinking of getting the Explore Scientific 82° im considering the following 30mm 18mm 11mm 6.7mm first do you think these particular e/p will work well with this scope and does the choice above sound sufficient. regards Lee
  11. Hi SGL, is there any plugin or setting that can (more) accurately depict views through an eyepiece? I'm aware of the oculars, but what I'm after is the shimmer of the planets, dimming of DSOs when using smaller scopes, planetary detail dependent on telescope size etc. Thanks
  12. Hi i own Celestron 130EQ which comes with 20mm erect EP and 10mm EP.... i bought a GSO ED 3x Barlow... The focus is not very sharp while using Barlow... Is it the EP at fault ???? Is it worth upgrading to Kelner or a Plossl ????
  13. Televue 20mm Plossl Eyepiece Boxed with original documentation This is not the smooth barrelled version £60 plus £5 tracked P&P Paypal preferred Collection from Cheltenham welcome
  14. Hi, I have been enjoying using the Celestron AstroMaster EQ90 over the last couple of weeks, mainly on the developing moon until it got too bright. But I got seduced by a secondhand bargain, (I hope), in the form of a Skywatcher 130/650 Newtonian on a eq2 mount with an old version of a motordrive. After decontamination to be allowed into the house, I've cleaned it up and was pretty pleased with the views of the Strawberry moon last night, just using the small opening in the tube cover, I'm still waiting for my moon filter to be delivered. I can't find much info on the scope. Can anyone tell me if the primary reflector would be a parabolic and if not does it matter that much. The primary mirror is pretty dirty, actually had a dead fly stuck on it, I carefully removed the holder and mirror and gently blew the fly off and hopefully some of the dirt with a very low powered airline. It's still dirty but the views of the moon and some of the stars seemed good to me. How dirty can you let the mirror get and what effect would I see to know I should clean it? Also the eyepiece holder is threaded on the outside at the 'top', is this for attaching a camera T ring directly to? Hopefully pictures will attach. Graceful for any advise.
  15. Hi Looking to add a good quality low mag EP to my collection. Was thinking somewhere 28mm and above, can take 1.25 or 2" and as wide a FoV I can get. Thinking in the Williams, Explore Scientific, Baader, TeleV... range or other good quality without having to sell a kidney to buy... Lee
  16. Hi everyone! Like a lot of new amateurs I am completely overwhelmed with the choice of eyepieces. I have a Sky Watcher 250P Classic on a dob for visual astronomy. I have recently purchased the Hyperion IV 8-24mm zoom (with 2.25 Barlow) as my general roaming around EP. Now potentially looking for a high powered EP with large FoV to get those detailed views of planets and DSOs - the question is which should I buy? I was thinking something in the 2.5-6mm range and happy to go up to say £250 price point for the right EP. So, what is the wisdom? A 6mm and Barlow, or some where between 2.5 (pushing the scope) and 5mm without Barlow? Thanks! Lee
  17. Why there's black line around in my view 20mm eyepiece? Celestron ExploraScope 70AZ
  18. Hi there! I’m looking forward towards purchasing a new wide FOV eyepiece from FLO (first light Optics ) and I do to know which one to pick! i will be using it on my f/6 8” Skywatcher dob and hoping to get good views of the Orion’s nebula , (large nebulae in general) andromeda and others. I ve heard the panaview 32mm is a good choice but I d like to know about the other options as well. I would like the budget to be around 100€ Clear skies, Kronos.
  19. Looking for my first televue eyepiece 25mm 1.25" barrel plossl, happy with used as long as great quality, bank transfer preferred payment Sorry, can't stretch to other Televue models
  20. 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
  21. 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
  22. 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.
  23. 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
  24. 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
  25. 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.
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