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Found 72 results

  1. Fitted straight to Hyperion and couldn't get focus on Jupiter or Moon on either the 2" or 11/4". Had put some grease and loosened the focuser locking knob made it easier to adjust but still no joy. Took it back home and Hyperion had the 1.25" adapter fitted to which Barlow with its converter were attached. After removing the Hyperion 1.25" adapter, Barlow fits straight on with its converter. This makes it usable up to around 9mm (18mm/2). At higher magnification the focuser would need to extend more but it's at the limit. Need to think about 2" collar to let the Hyperion slot out further outside to increase the gap. Still, managed to get a view of Moon, Jupiter and Saturn at 9mm. Admittedly I can get 8mm without Zoom so this was more of a test. Oh, also NexYZ has arrived and it's actually very descend although it's tricky to operate Hyperion's zoom with it on.
  2. 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
  3. Hi SGL, My lovely wife bought me a SW Explorer 130 with the basic RA drive for my 40th birthday 8 years ago, and I've enjoyed using it on and off ever since. I've started getting more into it - it's a great beginner scope, but I'm - like lots of others on this forum - looking at upgrading. One of the things I found tricky with the scope was getting the focus just right at high magnification (I'm sure that's kind of obvious!). It does wobble quite a bit on the EQ2 mount when focusing. I get pretty good - if small - views of Jupiter, Saturn, (the Moon, of course) and have had hints of seeing some DSOs. I bought a 8mm BST Starguider, and it's a great improvement on the standard 10mm that comes with the scope, but if I push the scope by adding the 2x Barlow and the 8mm it's a blur and the focus seems to keep missing the sweet spot. I saw a post elsewhere on this forum by MakTheNight, (looks like they've left now - last post was 2 years ago) who added a Baader Helical Focuser that attached directly to the T-thread on the focusing apparatus on the SW. Link to that post is below. I got one and it is indeed a great improvement on fine tuning - the problem is I can't use it with the Barlow as the helical focuser is about an inch long and the focuser can't move far enough into the scope to focus with the Barlow and any of my eyepieces (the 8mm BST, or the 10 or 25mm standard eyepieces) . Clearly MakTheNight managed to get their setup to work with some specific eyepieces (a Luminos 10mm and 32mm Plossl) and a specific Barlow, so I tried looking up how I could work out what combination of eyepieces and Barlow would work, rather than randomly buying kit and having to return it because it won't work with my scope, but I haven't found anything useful yet. So I thought I'd take the plunge and ask here Can anyone help me figure out how I can calculate what combinations of eyepiece and Barlow would work with this setup? I'm also looking at upgrading the OTA and mount to a 200P and EQ5 at some point, so ideally would have a combination that could work with that too - the focal length and mirror is quite different - 1000mm on the 200P parabolic vs 900mm spherical on the 130. Many thanks! Simon
  4. I picked up a Celestron Omni last year quite cheaply and had originally been using that with stock eyepieces, which was fine. Since then I've bought a couple of BST Starguiders and a Hyperflex zoom, and I'm now wondering if I'd notice any difference with a better barlow (this is now being used on an F/5 150mm Newtonian). Otherwise, the pennies can be directed elsewhere. I'd not considered it before as the next rung up seemed to be around the £90-£100 mark, which seemed out of line with the rest of the spend. But I've seen some positive reviews of 3-element models in the region of £35-£40. In particular, I've read good things about the Revelation/GSO Astro 2.5x (though apparently closer to 2.2x) and the Baader Classic Q 2.25x. - does anyone have experience with both of these, and have a preference? - would I notice any significant difference with either, compared with the Omni? - I read somewhere that the Baader in particular required focussing the tube into the OTA to an extent that caused some image degradation. Obviously I'd want to avoid this if true, so is this a feature of the Baader, or of both, or of all (shorter?) barlows? (to be honest, I'd not thought to see whether this was happening with the Omni, I'll try to remember to check, if this weather ever breaks). Thanks in advance.
  5. After receiving great advice from this group, I decided to purchase this TeleVue 2x Barlow! It's going on my Skywatcher Evostar Pro 80mm. I have an ES 6.7 eyepiece I want to use with it. Can’t wait to give it a go!
  6. Hi Tonight I was looking at Jupiter and got some nice views with a range of eyepeices. The best image detail wise and for clarity of image was a 15mm, which on my 8" Evolution gives me appx 135X I tried using my Televue 2X Barlow which normally works fine. I can't remember exactly which eyepiece this happened with, maybe the 15mm or a 9mm, but when I used the barlow the planetary image would soon disappear out of the eyepiece. The mount seemed to otherwise be tracking OK although notice the planets seem to move out of the eyepiece view after a while. So did I have too much magnification with the Barlow? I think I did manage to get focus, the image just wouldn't stay put. Thanks for any insights or advice Siouxsie
  7. Hi, I am pretty much new in Astronomy. Recently I have bought Meade Polaris 127mm telescope. The Barlow(2x) which Meade has provided is pretty basic. It gives pretty blurry view. I have read few blogs and get to know that for 127mm, 2x-3x magnification is more than enough. Now I’m confused in its specs(element in it). Wondering which one I choose, 2.5x Barlow 3 element or 2x Barlow with 2 element to get clear and crisp viewing. Ryaen
  8. I am looking for a really good Barlow, that doesn't compromise the performance even of the greatest EP's. Speaking of good EP, I already have a 3.5mm Delos - "Barlowing it" puts any scope on its edge anyway. I intend to use it on my 90/600 APO and possibly a c11 in the not-so-far future. Any recommendations, which one to take? Right now, I am looking at the Powermate 2x. I see, it's a corrected optics, but is it also APOchromatic? Other, quite exotic piece I found and seems interesting, is the Baader Fluorit Flatfield Converter. Latter seems interesting for planetary photography too.
  9. Hello everyone, I've got a question. I want to upgrade the visual back on the Mak 127. The standard back on the Mak is not pleasant to work with as seen in the image. I need to get rid of this plastic thing. I purchased a mak to sct adapter when I bought the scope, I never got around to doing anything until now as I've just acquired a Baader 2.25x barlow as shown in the image. Now, I've had a go of attaching the the Baader Barlow into the original plastic thing on the mak, it works .... but I'm not happy with the connection being made with the two locking screws, as there is still movement when the barlow, t-ring and Canon DSLR are all in the train. I've been having a look on FLO for some work around, does anyone have some input as to whether this will work. Mak to sct adapter-> Baader 2 inch to 1.25 reducer adapter->Baader 2.25x barlow + T ring & DSLR https://www.firstlightoptics.com/adapters/baader-2-to-125-reducer-adapter.html https://www.firstlightoptics.com/adapters/BaaderT2ext-1508153.html Any input or a better way of securing everything is greatly appreciated! Another option I've come across is this , Baader ClickLock 2"-1.25" Adapter and Baader T2 Extension Tube to bring it to 40mm when attached to the mak to sct adapter. Anyone have any experience with this?
  10. Hello there My budget for eyepieces is $1,000. I started off thinking I would get a Celestron eyepiece kit for about $200, for example. After trying a few out, I soon realised that I wanted eyepieces of higher quality. My mindset is that I'm investing $2,000 in my telescope, a Celestron 9.25 SCT, and I want to be able to extract from that scope the very best views that I can. Wishlist - I'm looking to buy 3 eyepieces maximum (not including a Barlow) Ideally - if possible - I would like to get eyepieces that I can use on both my telescopes, but my priority is toward the 9.25" as that is the bigger investment. Both my telescopes have 1.25" barrels. * Cassie - A Celestron Newtonian. Aperture = 130mm, FL = 650mm, FR = f5 Max useable magnification between 250x and 307x * The Cubble Space Telescope - A Celestron SCT. Aperture = 235mm FL = 2350mm, FR = f10 Max useable magnification between 460x and 550x I don't feel comfortable spending more than about $300 on each eyepiece I want these eyepieces to last as long as possible. I try to look after thinbgs if I can. Decent eye relief if possible I will purchase a Barlow separately Field of view - something 60% + Usage - My observing will be probably 80% solar system planets & moon, 20% deeper sky objects I'm not that in atsrophotogarphy. I have a little Celestron NexImage 10 with which I am hoping to make some videos and stacked images of Jupiter, Saturn and detailed imaging of Pluto ( ) I really just want the WOW factor right now. Enjoying the thrill of Saturn;s rings, tracking Jupiter's 4 main moons, detailed lunar observing etc. Questions - So what would be your suggestions or advice, please? I have been looking at the Tele Vue Delos & Delite range. The Nagler range looks nice but I'm note sure if I need 82' field of view. A bit pricey, too. Explore Scientific's offerings are a possibilty. What's the deal with zoom eyepieces? Does that mean you can have an eyepiece that will do the job, for example, of a 6mm, 7mm, 8mm and 9mm eyepiece all in one? Is there a trade off?? What's the catch?? Regarding Barlows, I was thinking of just keeping it simple and getting a decent 2x lens without spending crazy money. Something in the $150 range. Or would I need a high end Barlow to complement the better eyepieces I am hoping for??? Overall, I'm looking for 2 or 3 eyepieces and 1 Barlow with a $1,000 budget. Any thoughts, ideas, advice or opinions all gratefully received, thank you.
  11. Hello you wonderful people,sorry i have not been on here much lately,busy life and terrible cold/flu, i am considering purchasing a Barlow lense, and i would very much appreciate your thoughts and input, as a total newbie, i dont know very much, i know i want to get a 1,25 x2 barlow, but is it ok to buy a generic or should i buy a brand name and spend a little more, does it matter what i buy. I have seen them ranging from £6.00 upwards i was thinking of getting the celestron for about £25. Anyway thank you very much for taking the time to read and comment, best regards Dave.
  12. Hi I have a Meade sct and I’m a complete novice and was wonder where to install my 2x Barlow lens. Thanks in advance for help
  13. Hi there, I am still new to amateur astronomy and astrophotography. I recently took my first steps towards moon and Jupiter photography. While I am satisfied with my moon pictures, I am struggling with Jupiter. I am a bit desperate, so I hope that maybe someone good give me a couple of useful hints so I can learn and improve. When shooting Jupiter without any barlow lense or eyepiece, I manage to get a sharp picture and am actually reasonably satisfied with the results (see attachments named "ok.."). I use Firecapture to shoot something like 3000 single images (mostly JPEG because I had issues with other formats.. maybe this is one of my first mistakes) and stack them afterwards. When recording AVI movies with Firecapture and dissecting them to single pictures afterwards, my results are less sharp than taking photos, so I sticked to recording images instead of movies. When the image is stacked, I continue with editing using Registax. After tweaking around, I obtain a sharp image of Jupiter as a result. Now to my issue: I want to obtain bigger images from planets, especially Jupiter, and therefore bought a premium 3x barlow lense. I tested it on the moon and was very satisifed when comparing the view (and images) to my cheap 2x barlow lense. So I think I managed to see the difference and I think that the new barlow lense does quite well. When putting the ASI ZWO cam into the barlow lense and shooting Jupiter, the effects of the seeing increases (as I expected) and the image starts getting more noisy, but the single frames I see within Firecapture are still ok (at least that is what I think, maybe I am wrong there). I play around with the values for gain and shutter speed, select the Jupiter profile and start shooting (max. 180s because of Jupiter's rotation, I receive around 20 - 50 FPS, depends on the shutter speed, ofc). After 3 minutes, I receive between 2000 and 4500 single JPEGs, depending on my settings. Of course I know BMP or TIFF should be better, however I often have issues with Firecatpure's BMPs/TIFFs when putting them into pre-processing software such as Pipp. I pre-process, stack and edit my images and then still have a blurry Jupiter in front of me (see attachment, images named "stack.."). No matter what I do and how I tune the settings within Registax, Jupiter won't become any sharper when using the stacks which were recorded through my 3 x barlow lense. Could this be because of my recordings (bad image format, not enough frames..)? Do I need more frames when recording through a barlow lense? Or can't I do any better under the conditions of my site (see below)? Are there any tricks when recording through a barlow, do I need other settings or shall I use another software? I attached the stacked image ("stack6_raw.tif") and am curious if someone could get more out of it. For me, this tif looks like the stacked pictures of the small Jupiter pictures, and I managed to get them sharper. So I wonder if it's me or if I simply can't expect more when using a barlow lense? If so, how can I shoot bigger and sharper pictures of Jupiter then (without having to switch my telescope, I know that my Newton is not the "planet killer"). I am greatful for all hints! My equipment and software I use: EQ6-R Pro with GoTo 8" inch Newton (200PDS 200mm 1000mm f/5) 3x Premium Barlow ASI ZWO 290 Color and cooled Recording: Firecapture Preprocessing: Pipp (Planetary, output in TIF) Stacking: Autostackert 3 Editin: Registax6 My site: Germany Small town, lots of light pollution, but it's still "ok" Mid - strong seeing on most days stack6_raw.tif single_stack6.tif single_small_jupiter.tif
  14. Selling an 2x ED Barlow - not required and I'm pretty sure I only used it once! It's this one on FLO - http://www.firstlightoptics.com/skywatcher-eyepieces/skywatcher-ed-deluxe-2x-two-inch-barlow-lens.html Caps but no box, but will be securely packed and protected for delivery. Pics to follow later... £35 Price includes UK delivery
  15. Found an old (apparently USA model) celestron C8 SCT a while back, its a bit hit n miss with collimation and the optics - (some very strange star test shapes :P) but when it works it works well Here is a couple images from a couple months back. Thanks for looking. This particular night seeing was reasonably good, and collimation wasn't too bad either. Celestron C8 / ASI120MC / 2X barlow - captured in sharpcap2, stacked in autostakkert!2, wavelets in registax6
  16. My telescope is the Skywatcher Explorer 130P GoTo Is it worth getting a 2.5mm EP for my telescope or a x3 Barlow lens. I'm asking because i would love to see mars and Saturn closer up for finer detail.
  17. Are these same as the Baader, or different lenses in a Baader body?
  18. For less extreme magnification than 2x but which would take 2 inch eps, I was considering the Antares 1.6x Barlow. Using it in my 500mm refractor and 1260mm dob the latter with a Paracorr 2. Is this a good Barlow to get?
  19. Hello (again) I have a Skywatcher Deluxe 2x Barlow for sale. Hardly used, so in great nick! £15 inc. postage. Thanks
  20. Great little Barlow, but as I have an ES FE, I don't really need it. Excellent condition and it will be posted in a bolt box. £22 posted to mainland UK. PayPal preferred.
  21. so I'm getting a new set up that's a lot easier on the back and I've got everything ironed out expect one critical element, pardon the pun. Here is the layout http://www.telescope.com/mobile/checkout/basket.cmd my dilemma is choosing a decent 2" Barlow. I've narrowed the choice between the Celestron 2" 2.5x luminos https://www.telescopesplus.com/collections/telescope-accessories/products/celestron-2-inch-luminos-2-5x-barlow-lens and the orion 2" 2x http://www.telescope.com/mobileProduct/Accessories/Barlow-Lenses/Orion-2-2x-Barlow-Lens/pc/3/c/41/102344.uts I'm only looking between those two and I would greatly appreciate any words of wisdom from those of you who use one or the other on their 10" dobsonian telescope. Thanks for the assistance and clear skies everyone.
  22. Datyson DC623 x3 "Achromatic" Barlow lens, Chinese made, cost about £12 inc postage (from ebay). On arrival I saw it was all-metal and finished in black. All the screw parts were rattly loose so I was easily able to confirm that it contained just one negative lens element. I wanted something to check out how my f5 200p Helios behaved at around x300, so I took a chance on ordering one of these cheap Barlows. In my 127mm Mak it made the view bigger without adding any obvious crud of its own. In my f5 Startravel, it worked and the aberration of the scope itself masked any possible defects in the Barlow. In the 200p, paired with a Baader Classic Ortho 10mm, it split the double Pi Aquilae (1.4") which I had struggled to see otherwise. Verdict: worth considering if you don't need or can't afford a premium quality Barlow. The lens alone would cost more than the asking price if ordered from an optic lens supplier.
  23. After a great hour viewing i stuck the dmk 21 mono into the 9.25 sct and put the IR pass 742nm filter and did a few barlow shots then just some random rilles ect enjoy i did avaerage 1200 frames 900 stacked
  24. Having had another go at imaging Jupiter, I used both a Celestron Ex-Cel 2x and an unbranded 3x barlow. Comparing the results of the two, the 2x drizzled 1.5x looks better than the 3x. I guess I'm stating the obvious that all barlows are not equal, but the question then is, how do you choose one? Given I have a Meade 8" SCT as my primary planetary scope (2000mm focal length, f/10), I'm thinking about getting a nicer barlow at or above 3x specifically for use in planetary imaging. Any specific suggestions?
  25. This may be a dumb question but can you stack barlows together? like a x3 under a x2 or the other way, would it be x5 or x6?? I was thinking of getting a x3 barlow for higher magifacation .
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