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Found 13 results

  1. Looking at the Ricoh site, it gives eye relief for the 8 - 24 zoom as 18 to 22mm. FOV less than XWs, but how is the optical quality from 14 to 22mm compared to XW eps for those two focal lengths? Given the varying reports of field curvature etc, is the zoom's view for astronomical viewing better edge to edge, if not wider?
  2. This is a 8-28mm zoom eyepiece, 1.25" fit, branded as "Starguider" and sold by "Sky's the Limit". The claimed spec includes fully coated lenses, FOV 40-60 degrees (24-8), eye relief 18-15mm (24-8), internal blackening, and a T42 thread under the eyecup rubber. The suppliers claim that it is the same as the Sky-watcher and Celestron ones which it physically resembles. It also resembles the Seben 8-24mm zoom. The price was £42 + postage, which would be cheap even for a decent fixed eyepiece. The eyepiece comes in a truncated cone shaped protective case and looks well finished. However It had an internal rattle sounding as though a lens was not clamped down tight. The zoom sleeve was very stiff to turn but freed up a bit in daytime use. A daytime test in the 102mm Startravel revealed that the eyepiece worked and that the 40 deg field did not feel obnoxiously small. I was able to try the eyepiece on the night sky the same evening in the C8 SE Nexstar. Conditions: urban sky with moonlight, poor seeing. I used the eyepiece in a double star hunt with the following conclusions: Optically it seemed to work as well as my 8mm Celestron X-Cel (old model), and 10mm Baader Classic Ortho. Mechanically, I found that the stiff zoom action was a nuisance as it was hard to know if I was twisting hard in the right direction, and I had at times to shine a red light on the zoom scale, or grip the body to stop it rotating. The 6/8SE mount has some backlash, and does not take kindly to heavy-handedness at the eyepiece end, resulting in the desired object disappearing from the FOV. The eyepiece required re-focusing after a change in zoom level, which I found to be a nuisance especially when going to higher power. In the C8 SE the actual field of the zoom at 24mm is not wide enough to guarantee finding objects by GoTo in random parts of the sky, (even when I remembered to set the zoom to 24mm) so I had to use the 25mm kit Plossl for locating and then swap in the zoom eyepiece. At one point I found I was twisting hard in an effort to zoom the Celestron X-Cel, which has (in the dark) a similar look and feel and weight. This did not go well. I split several faint double stars at around 3" separation. This isn't a severe test, of course. I also looked at the Epsilon Lyrae double-double near the zenith, which was easily split (as it ought to be) at 8mm (250x) with the stars well separated and showing signs of an Airy disc and diffraction rings. In summary, the stiff zoom action was a nuisance, and the need to refocus after zooming was disappointing. Both reduce the attractiveness of this device vs separate (possibly parfocal)eyepieces. I would be interested to hear if owners of similar pattern 8-24 zoom eyepieces had the same issues. http://www.ebay.co.uk/itm/Starguider-8-24mm-1-25-Zoom-Telescope-Eyepiece-/162523741115?hash=item25d72b7bbb:g:AOUAAOSw5cRZIVNn
  3. Hi everybody, I´m looking for the Speers Waler Zomm 5-8mm. Shipping to Germany should be possible! I would be very happy about an offer! <email address removed> Best wishes and always CS
  4. Hi, if i want to maximise magnification for Moon imaging can i use one of those zoom eyepieces that are typically 7-21mm at the same time as a Barlow? I'm looking at some of the zoom eyepieces but they don't seem to have threads on them, like this one (i notice that people buy it along with a Barlow so it must be doable but i like to check before buying!) : https://www.amazon.co.uk/Seben-Telescope-Eyepiece-7-5-22-5mm-Astronomy/dp/B00EL5XU9S/ref=pd_sbs_421_2?_encoding=UTF8&psc=1&refRID=N3DP09GYBWEWZKQNJQPC Thanks, Gary.
  5. I've had a zoom EP on my radar for a while now, ease of use and more time actually observing is important to me. So when a second hand Pentax came up on SGL no less and at a very affordable price I couldn't resist. Specifications I will use the first light optics link so you can read up on it a bit more here's the link: https://www.firstlightoptics.com/pentax/pentax-xl-8-24mm-zoom.html First impressions What can I say it's certainly a big eyepiece but not as heavy as I thought it would be. It feels solid and just oozes quality, nothing in the design of the EP has been compromised or overlooked. When I first turned the EP so the ER went from the least to full extent it felt so smooth I smiled to myself same for the magnification which felt almost as smooth very reassuring. First session Telescope - Celeston Nexstar 6SE I setup for my session same way I always do no changes what so ever on how I position the tube on my stand. I did use a higher mag then what I usually do around the 17mm mark rather then 25mm and honestly I've never had more accurate alignment. When putting the eyepiece in the diagonal I was very careful to tighten the pins enough and make sure the line which shows what mag it's at was facing up. So onto my targets first up was Saturn, really good detail on the rings I could definitely see different shades of colour and the rings were simply breathtaking. I could make out 2 of the moons fairly easily but my attention was mainly focused on the planet. Conditons allowed me to go up to around 10mm anymore and the degradation was apparent immediately this did improve later on in the night. The Pentax was extremely forgiving on we're I positioned my eye I did use the ER to the max setting. Comfort was immediately apparent, no blackouts or any sort of trouble finding my correct eye position. I did try observing with my glasses on but I've never been comfortable with wearing my glasses during observations. I think you could definitely use this EP with glasses on but not for me. Next on my list was the moon I added my moon filter and started at 24mm. The moon had a very detailed cool look about it, the craters and mountain ranges along the terminator were almost 3D it was stunning. What I also found within the first 20 minutes of observing was the zoom mechanism was very easy to use almost intuitive along with focusing as your increasing mag it all seemed very natural. I also popped in my 2x Barlow just to see if I could, I managed to get up to 12mm which would be around 6mm with the Barlow and the views were still pin sharp, it was like I was on a mission to the moon incredible. For my last observations of the night I chose M13/M52. M13 was stunning as always but what became more apparent was the crisp and detailed view of the stars and surrounding star field. I was able to identify a lot more then a low/med/high intensity of brightness for each star. I tried to portray this in my observational sketch and the actual cluster I've never seen it so prominent or big as it was at 17.5mm. M52 this was my first observation of this stunning open cluster. Immediately apparent again was all the stars were pinpoint and sharp throughout. I kept my mag at 24mm and for the first time felt a bit constricted with the 40 degree field of view but what made up for it was the detail and contrast sharp across the field and a lovely dark background stunning. Conclusion I was going to do a pros/cons section but I soon realised I don't have enough cons. As far as I can tell there's 2 cons price and fov. If I'm honest the price is justified 1 EP which is magically 7 and fov I believe is personal taste to an extent. Fov was only an issue for me at 24mm when observing an open cluster and to be honest I expected this. What was apparent through out was how easy it all was, how clear crisp and detailed everything was. The zoom mechanism adjusting your focus all went hand in hand. The comfort factor was huge not once was I frustrated with eye position or reflecting light artificial or natural/moon. So I'm very happy with my purchase, honestly I can't see why everyone hasn't got a zoom? Here are a few pics of the Pentax for your viewing pleasure. Thank you for reading my review. Clear skies ✨💫🌙🎨🔭 Richard
  6. Baader Zoom with LS50

    The Baader zoom is known for it's great versatile performance with h-alpha. Unfortunately as many of you Lunt 50mm owners know, it does not reach focus with the scope due to a lack of in focus. I saw saguaro's post here: http://www.cloudynights.com/topic/475199-anyone-with-the-new-lunt-50mm-pt/?p=6476959 but the adapters would set me back $40+. I went ahead and ordered a shorter eyepiece holder for the blocking filter- one that is 15mm tall vs the 30mm height of the original. Made sure to get one with setscrews to protect my eyepiece barrels from scratches. Arrived from China surprisingly fast- 9 days from the day I ordered. Box The pieces. Original on left, new one on right. Height difference. Original on left again. Attached to blocking filter. Original configuration seen first. Zoom in blocking filter. Notice the small gap. It's caused by the eyepiece barrel resting on the blocking filter. Not by any means a bad thing. Proof it reaches focus. There's still some extra in travel left.
  7. I'm Astonished!

    Have a look at this: And the original (after a bit of Pshop Levels etc.). I took this with a Canon 60D and a Canon 70-300 lens @300, and am amazed that this is possible without a telescope. It took a fair bit of learning and processing, but I got there. The original 12 lights and 6 darks were stacked in DSS then the massive amount of vignetting was removed using PixIsight, then the image was messed about with (technical phrase) in Pshop. Part of the lower edge is missing due to encroachment of the vignetting, but overall I'm pleased and encouraged. 12 x 30s on a Star Adventurer. The challenge now is to do it better! Any ideas on how I can avoid the speckled background noise? Cheers, Neil.
  8. In between doing jobs at work I've been trying to find some reviews of the Baader Zoom MK3 being used on a C8 or a 127mak. With no luck I thought I would put it out there on SGL to see if anyone of here can confirm if it is any good on any of these 2 scopes as I'm planning to sell off my collection of BSTs to fund it. I do like the idea of having the one eyepiece which I can just stick in my pocket meaning less to carry around with my my grab and go setup. What do people think then? Is the Baader good on slow scopes? Clear skies.
  9. Finally, the zoom and barlow arrived, almost 4 weeks after the order. The delayed was caused by strong sale before Christmas which made the adapter out of stock according to APM. Anyway here's some pictures: 1. Unboxing: Well packed zoom and barlow Leica zoom out of box and case: Leica zoom and Baader VIP barlow: 2, Some Phisical data: The Zoom weighs 470/510gram with/without 2" adapter, 115mm long with the adapter, here's a picture together with my other big boys (Skywather AERO 40mm, Baader Aspheric 31mm and Maxvision 24mm) With the 1.25" VIP added to Leica for 1.5x, the zoom becomes longer than 40mm Aero: 3. Coating: Very dark, a picture togethere with BCO 18mm: Looking at a white background, Leica is at least as white as BCO 18mm. First impression: The weather forecast pointing to some less cloudy nights towards the weekend, I'm keeping my fingers crossed for that.
  10. I have had my Hyperion Zoom Mk.III for quite a while now and I was wondering, if I should review it here, because what there is to say about an eyepiece, really? You just shove it into your focuser and look down the glass end, right? Well, since the Hyperion Zoom is effectively 5 eyepieces in 1 (I don’t really think it’s that big of a deal), it is not really a “static” piece of equipment, and there is lot of “accessory” for it, I thought I’d give it a try. Optics Optically, the eyepiece is a “seven element eyepiece, with multi-coated optics for remarkable sharpness, contrast and colour correction.” I am in no way an expert in optics, but I have to say that the quality of the image outperforms my pervious eyepieces, primarily in sharpness and contrast. I even had a 12mm Hyperion normal eyepiece for some time, and when compared, the views through the two were pretty much the same. Even in my F/5 dobsonian, the image distortion at the edge of the field of view is really not bad - though there, I do not really notice it that much; it is only when I zoom out to 24mm focal length that the distortions become really noticeable. There is a shaft, sticking out of the body of the eyepiece, in which the movable part of the zoom mechanism moves in and out, and I simply never get tired of the action-packed zoom action. One problem can arise though, and that is that any imperfections on the surface of the lenses inside the eyepiece can get, due to its zoom nature, visible at some point - that way, I once noticed a quite large piece of dirt inside the optics, which came into focus in 12mm position - this was really bothering me, because it was extremely disturbing, especially when observing the Sun or the Moon. Luckily, somehow, the piece of dirt disappeared (after bumping the EP gently on the table), so there is no need for returning it to the supplier. The piece of dirt did not appear again ever since. It is said that normal eyepieces outperform zoom eyepieces, but I am not so sure. Well, on one hand, you get a narrower field of view, that is true, but the quality of the image delivered (with Hyperion Zoom in particular) is really very good and if you are not traditionalist, or fond of ultra-wide fields of view, this age-old paradigm suddenly gets null and void and a concept of having half a dozen eyepieces suddenly gets, well, stupid. Having one decent Zoom eyepiece just seems more practical. Personally, since I have bought my Hyperion Zoom, I have not felt any need of buying a new eyepiece (for the particular range of magnifications), because it embodies everything I do (and will) need at the moment. Furthermore, the edges of the lenses are apparently blackened, and the EP’s construction allows very little or practically no reflections of brighter objects. Accessory The Hyperion Zoom comes with a wide range of “accessory”, if that is the right word; basically you get two different rubber eye cups (I even got a rubber eye shield, but I am not sure if that was part of the package, or a gift from the supplier), and both allow you to use the eyepiece comfortably, even when you are a glasses wearer; the eye relief is generous enough to allow that, though I am sure there are EPs with better eye relief than Hyperion Zoom. Furthermore, you get adapters for both 2” and 1.25” focusers. I personally prefer to use the 2” one with my 300P, because it feels more firm and solid, and the inside of the 2” adapter is “baffled”, which seems nice. One thing that I do not really get is that when you use 2” adapter, you can’t use 1.25” colour filters at the same time. The shaft, in which the movable part of the eyepiece moves in, is of just the right diameter, and it even has a thread on the end of it; but somehow, the boffins at Baader did not think to make it standard 1.25” filter thread, and that is a pity. I think it would be wonderful to have a freedom of filter choice, but that way, you can only use 2” filters with the 2” adapter and 1.25” filters with the 1.25” adapter; too bad. Perhaps, they will address that on Mk.IV. Furthermore, you get a wash of dust covers, just in case you use any of the possible combinations of eye cups and adapters, which means you can easily lose one if you are not careful. The eyepiece also comes with rather elegant leather-ish bag for you to store it in, which I, think is a rather nice touch. Usage The most prominent feature of this Zoom eyepiece is its…well…zoom capability. The eyepiece has click stops at 8, 12, 16, 20 and 24 mm focal lengths, which means that it can deliver a wide range of magnifications, depending on your telescope’s focal length. I for instance have a 305/1500 dobsonian, which means that I get 62x, 75x, 94x, 125x and 187x magnifications, which is a range good enough for most objects up there. It should be said that the EP’s field of view varies with focal length - basically, the shorter the focal length, the wider the field of view; the longer the focal length, the narrower the field of view (it’s actually 68° FOV with 8mm and 50° FOV with 24mm). Of course you can use any focal length between the click-stop position as well. Furthermore, though advertised, the eyepiece is not perfectly parfocal (meaning that it holds focus at all focal lengths), which means you have to refocus every time you change the EP’s focal length. I know that there are eyepieces with better FOV that are perfectly parfocal, but these can get way more expensive than the Hyperion Zoom. It is fair to say that I have heard that some people find their zoomy Hyperions stuck when it’s freezing out there, and thus the eyepiece needs regreasing. However, I have used mine in temperature below -7°C all night, and although the zoom action felt more stiff, it did not get stuck even a bit, so if there really is a problem with it freezing solid, I reckon it is an effect prominent overtime. However, the Hyperion Zoom is not that cheap - it costs roughly the same as two fixed focal length Hyperion eyepieces, which is quite a lot, but then, you get a variety of magnifying power in one eyepiece, and it is just great not having to change the eyepieces all the time, every time you want to try different power. One of the best things on this eyepiece comes with it zoom capability - without having to change the eyepieces, you can toy around with magnifications to see which magnification delivers the best contrast on the object you are looking at - this is due to the fact that the contrast of the background often changes with magnification (e.g. when you zoom in, the background gets darker), which means that some dim objects can miraculously pop up, or seem more distinct. There is a slight issue with having to refocus all the time but when you concentrate on some fuzzy blob, you see the change in contrast when you change magnifications, even though the image is not perfectly focused. This gives you an ability of very quickly and easily changing the views through your telescope to see which one fits the situation the best, and I think this is one of the main advantages of any zoom eyepiece. The eyepiece itself is quite bulky and heavy (when compared to standard 1.25” eyepieces), which on its own is ok - you get a good sense of its build quality and heftiness - but it becomes a problem when you want to use the eyepiece with some more basic, entry level telescopes. For instance, I have a Skywatcher 114/900 with a plastic 1.25” rack-and-pinion focuser and it really struggles with the Hyperion Zoom. The eyepiece is so heavy that it bends the focuser tube this way and that way and upsets the balance of the whole setup considerably. This means that perfect collimation, is, at this point, really unimportant. I have yet to try the eyepiece in my Firstscope 76, but I reckon it will handle the eyepiece a bit better, because its focuser feels slightly more robust. Upsides “5-in-1” zoom concept No need for eyepiece swapping Zoom ability lets you find the ideal contrast magnification Decent build-quality, big and robust Wide range of accessory (adaptors, eye cups) Good contrast and sharpness, comparable to fixed focal-length Hyperions Smooth zoom action, even in low temperatures Good eye relief Good for afocal projection No inside reflections Downsides Narrower field of view with low magnifications Inability to use 1.25” filters with 2” adapter More expensive than regular eyepieces Dirt inside the optics can get into focus, which is really annoying Apparently can freeze solid in sub-zero temperatures (not proven) Heavy Not suitable for entry-level telescopes
  11. Hi all, this is the Sun as seen from southern Ireland the 07th of July. Single shot taken with a Nikon D3100, Sigma 70-300mm telezoom lens, Baader Solar Filter.
  12. Hi guys, It has been a while (a couple of months) since I have had my new Baader Hyperion Zoom Mk.III eyepiece but today, when obseving the Sun, I have noticed quite a prominent piece of dirt in the FOV. A bit of investigating later, it seems, that the dirt is stuck somewhere inside the mechanics of the eyepiece, bringing it into focus somewhere between 16mm focal length. Looking through the eyepiece against the bright background, I have notice at least two other smaller pieces of dirt, but the one large in question is the one that is really bugging me. I know there is a way to disassemble the eyepiece and clean it, but I'm positive that cleaning it DIY will only make it worse. My question is - is the piece of dirt reason enough to send it back under the warranty? Thanks