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Rob_UK_SE

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About Rob_UK_SE

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    Star Forming

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    East Sussex
  1. Thank you for the offer, emadoussa. Regrettably, I am unable to deliver the telescope.
  2. Offered for sale is a Sky-Watcher 300p flextube 12” dobsonian telescope. All original parts are included (tools, eyepieces, 1.25” & 2” extensions, OTA caps and finderscope) as well as a light shroud and Telrad finder (in a hard case). The telescope and base are in superb cosmetic, mechanical and optical condition. The primary mirror is very clean and has produced some wonderful results. Everything has been stored inside the house to keep it dry. Shortly after purchasing this telescope, just over a year ago, I was diagnosed with a frozen shoulder (unrelated to using it). Therefore, I have only been able to use the dob a handful of times. With the new year approaching I think it’s time that this goes to a new home where it will receive some proper use! Asking price is £475 for cash on collection from Hailsham, East Sussex. Please find some photographs below:
  3. I am sure that I'm not alone in trying to complete a set of BGOs with somewhat limited success. The announcement of Kasai's new HC eyepiece, which looked pretty much identical to the Baader model, was news to my ears. I was particularly excited to see that Teleskop-express.de have started to stock them. However, looking on Kasai Trading's website today I see that there is a new announcement declaring this eyepiece line will not be continuing after all. Also, the product specific page has disappeared from their sitemap? http://www.kasai-trading.jp/notice.htm If I am reading this correctly, it is such sad news. This new eyepiece looked to be the only way we might get our hands on a 12mm or 9mm BGO equivalent in the foreseeable future. Even the Japanese volcano tops are becoming more difficult to find. I am left wondering whether there has been a dispute with Baader. Perhaps Kasai Trading has been forbidden from selling the HC line? I'm sure time will reveal the full story. I have copied below a text translation (thanks to good old Google) from the Kasai Trading website: ● The end of the project & Barrow reproduction eyepiece lens ● domestic With the closures of OEM domestic manufacturers, We have been pushing more aggressively than earlier this year, a project to reproduce at home the products handled by our supply has been stopped, for various reasons difficult to overcome, this project will cease I was forced to quit without obtain. It is up to you I feel very sorry for customers who folded more than anything, looking forward to the re-sale of the product to derail it in the middle of the road also, and regret extremely, I know you want the understanding humbly.※ This product is out of stock already famine, was being finished handling is as follows. All species HC-Or, AP-20mm, EWV-16mm, EWV-32mm, 2インチ2 × Barrow is in stock at this time ※, the product is scheduled to be completed as soon as the dearth handling is as follows. AP-5/7.5/10/12.5/15mm, short piece ball Barrow EWV-10mm, 3, 1.5 × species short Barrow 2 If you would like, is to get the product as soon as possible the above stock I would suggest. Please excuse the rather odd language generated by Google's translation (some of it is a little confusing), but you hopefully get the general idea. It is rather disappointing to think that this very fine eyepiece line may never be reproduced again. Clear skies to all, Rob
  4. I think it is worth starting with the old saying 'the best scope is the one you can use most regularly'. Both scope designs are very good for the money. However, there is a significant difference between their weight and portability. I have a Lightbridge and am a huge fan of its ability to collapse into a much smaller package. I can managing the 12 with no issue at all. I can also move the tube when it is fully built - should I wish to re-locate at speed. The flextube is, without question, far better out of the box. The Meade is a wonderful scope, but the do require so upgrades (then they really shine). Skywatcher scopes hold collimation well and usually have good springs etc. The lightbridge rocker is not quite as substantial and will require collimation each session due to the truss design. If you have not seen a 14 / 16 flextube in person you really should... they are HUGE! I was put off purchasing one after seeing a 400p. I am sure the views are fantastic but the rocker will not go through a conventional doorway (neither the 14 or 16 Skywatcher will). The Meade should be ok. As mentioned, the Meade will require a greater number of tweaks immediately. In addition to the usual bits (telrad, bobs knobs, etc) you would need to look at some sort of counter weight system - particularly if you plan to use heavier eyepieces such as the larger Naglers etc. I use taxi magnets on mine and then attach dumbbell weights as required. The flextube has a slightly better balancing point and is more friendly to heavier eyepieces. The views are probably very similar between the two 16s. In my opinion, the 14 is too close to a 12 to justify the significant difference in weight and size (I think only 33% more light?). I would have suggest having a good look at the lightbridge 12 and the flextube 300p too. Best regards, Rob
  5. Rob_UK_SE

    hello from barry

    Welcome to SGL Barry.
  6. Rob_UK_SE

    Hello

    Hi John, Welcome to SGL! Wishing you clear skies. Rob
  7. Rob_UK_SE

    Eyepieces for Meade Lightbridge

    Your decision whether to purchase 2" or 1.25" eyepieces depends on whether you are looking for wide field views and or how much you wish to see in the eyepiece. How much we see is, in part, determined by the field of view. There can be a significant difference in price between these eyepieces, but also their performance too. A cheaper 2" eyepiece can produce some vey disappointing results, whereas a 1.25" eyepiece of a similar power (such as a Baader Ortho design) never disappoints. For the moon, planets, globular clusters, double stars, etc you will be looking for greater magnification. I would recommend and eyepiece that is around 8mm for medium power viewing. This would result in views with 159x magnification, more than enough to see the planets well on most nights. For galaxies and nebula most observers use lower power (low magnification) eyepieces. Therefore, something around 24mm or greater would be preferred. This would result in a magnification 52x in your scope and would be perfect for M81 & M82, M31, the veil nebula, etc. Interestingly, If you look through a 40mm 1.25" eyepiece with a 42mm field of view, you will see more or less the same amount of sky as a 24mm 1.25" with a 62 degree field of view. This is because you see the same amount of sky with both, but one of them (the 40mm) presents the view in a much smaller size. If you look through a 22mm eyepiece with 82 degrees field of view, you will actually see slightly more sky than the 24mm 1.25" eyepiece. Another benefit is increased contrast when you view with slightly increased magnification. 2" eyepieces are more expensive because there is more glass required and a lot of design work to achieve a non distorted view. Ultimately, 2" eyepieces let you see more sky - in some cases, much more sky. When you look through a 2" eyepiece with 100 degrees field of view it is a bit like looking through a window from a space ship sometimes, but you pay a hefty price for this. My recommendation would be to consider Celestron's X-Cel LX eyepieces. They are very reasonably priced at around £70 each eyepiece. Perhaps just the 25mm and 8mm / 10mm to start. If you find you are looking for other sizes then you might add something in between, or with a little more power. It is very tempting to purchase a full set (at great expense) straight away, but you will find there are certain sizes you are always reaching for. Please find a link below: http://www.firstligh...x-eyepiece.html First Light Optics (the site's sponsor) are an excellent company and have never let me down. They would be my first call. However, Harrison Telescopes and Telescope House are also very fine companies. I have attached an image showing the different eyepiece sizes to that illustrates the amount of sky you would see with a 10" telescope (similar to yours). Regards, Rob
  8. Well, I am now a very happy owner of a Meade 12" Lightbridge. It arrived early this morning and was out of the boxes in no time at all. I was surprised to see that there have been a few updates made to the 12" Lightbridge, at least compared to ones I have read about online. Firstly, the trusses are now black, rather than silver. I was very pleased to see this, despite a sense of very mild frustration having purchased the black foam truss covers - I'll just have to double up! Meade have also updated the collimation and mirror locking screws to ones similar to Bob's Knobs. Sadly the springs are still terrible and I look forward to the new ones arriving in the post from Bob's Knobs. The focuser is nice a smooth with the fine adjustment having virtually no impact on OTA vibration. The azimuth bearing is also very smooth. All looks promising. The only negative is a typical Meade issue - quality control. Although a minor point, the felt has only been stuck to one side of the altitude bearings. Ed, at Harrison Telescopes, has spoken to Meade already about this on my behalf. It's certainly not his fault, but it is frustrating that Meade aren't checking for details like this before telescopes leave the factory. Thte Lightbridge is quite a lot larger than the Skywatcher 250px dob it replaces. Although, all credit to Skywatcher -the 250px is far better balanced. I have made up a basic counter weight system for the Lightbridge and will have to bulk order some more taxi magnates as a more permanent solution. After a few tests I have worked out that I will need around 2.5=3kg of counter weight to balance the 31 Nagler, light shroud and a Telrad. I have attached a photo of the 250px and 12" Lightbridge to illustrate the size difference. Looking at the Met Office's site there may even be a bit of clear sky tomorrow evening... this would, perhaps, be a first - to actually be able to use a new scope on the same weekend it arrived would surely be madness! Regards, Rob
  9. Rob_UK_SE

    Hi from 'the colonies'.

    Hi Dave, welcome to SGL. Canada is a beautiful country. Toronto is on my 'to visit' list. My wife is from Ottawa and we try to get over there whenever possible. Regards, Rob
  10. Well, I took the plunge today and ordered the dob! After much pondering following the many helpful suggestions on this thread (thank you to all), and trawling through a number of older discussions, I ended up ordering a Lightbridge 12" - mainly because Ed at Harrison Telescopes was very reasonable about a Saturday delivery and the scope is in stock. He also mentioned that it has recently had a duel speed focuser upgrade which will at least get me through the first few months (before a Moonlite is affordable). Again following advice, I have ordered the upgraded springs and knobs from Bob's Knobs and a decent light shroud. I am working on the principle that if I order a scope when the weather is truly shocking, I may have clear skies when I finally get the thing built? ... perhaps this is just wishful thinking. Alternatively, I may have just condemned the astronomy world to a month of bad weather. Steve, it would indeed be great to meet up again. How's the dob build going? Hopefully we will start to see darker skies over the next couple of months (just in time for a nice full moon on the only clear night!). I look forward to posting a first light review... Regards, Rob
  11. An update... I have taken the Tele Vue scope off various sale sites and have firmly decided to keep it. However, I still intend to get something a little larger for DSOs. Therefore, the 10" dob has to go and will be replaced with either a 12" or 14". To be honest, a third scope would land me in soo much trouble with my better half that there is no other option . This is the only way I can justify the upgrade. I have called around and completely failed to find a 14" Flextube in stock to view, however, looking at the rocker dimensions I think it is probably just too big and heavy. If finances allow it, I would sooner order the 16" as it is so similar in weight to the 14" anyway. I know this question has been posted a fairly health number of times on SGL, but given everyones current experiences which would you go for: Skywatcher 12" Flextube or a 12" Meade Lightbridge. Both are the same money, one requires an immediate upgrade to the springs, the other is slightly heavier and more bulky. Which would you suggest has marginally better optics? Anything else that makes one slightly more appealing than the other? I'm afraid I have turned this thread into yet another Skywatcher vs Meade posting... sorry folks. Rob
  12. Following the many helpful suggestions (thank you to all), I drove to Telescope House hoping to look at the size and weight of some of the dobs discussed. They had a 16” Lightbridge and seeing one with daylight allowed me to realise just how big the thing really is. My only previous experience of one was Steve's, however, the weather (typical sudden cloud) put a stop to experiencing it in ‘full glory’. After my visit, and further consideration, my head did tell me that a 16” dob is just too much for me to manage on my own - even though my heart was ready to hand over my bank card and run – well, stagger out slowly, dragging a series of rather large boxes! Unfortunately, Telescope House don't sell the 14" Skywatcher flextube so I was unable to see one in the flesh, but I am wondering if it is similar in scale to the 16" - particularly when considering the size and weight of the base being so similar to the 16" Lightbridge? They did have the 12” lightbridge. Interestingly, it was somewhat bigger than I remember from previous use of friends’ 1500mm focal length dobs. Perhaps I am better off scaling my ideas down in favour of a 12” dob (which would probably result in the sale of my 10" dob) then keeping the Tele Vue for those moonlit nights and changeable weather moments. Not to criticize Skywatcher or Meade scopes (after all, I own a Skywatcher dob too), but I am now a little concerned now about selling the Tele Vue towards a dob that may have a limited lifespan when compare to the scope I would sell to pay for it. I am still searching for a 14” to see one up close, but increasingly with an understanding of why so many choose 12” as their large scope. Maybe this is the better way forward, keep the refractor, but upgrade the 10" to a 12” dob for DSO. Oh the joy of aperture fever… Rob
  13. I'm really grateful to you all for sharing your views on this this topic. Ultimately, I am going to have to compromise – I do recognise this. In an ideal world I would keep the Tele Vue as well, however, funds simply won't allow this. The two dob idea has really grown on me and your thoughts have helped to solidify this - thank you. I have now advertised the scope and hope to unlock the money tied up in it shortly. However, I am now wondering whether the Skywatcher is the best scope for my budget after your post Moonshane commenting on Skywatcher Dobs. Perhaps I should be looking at alternative large dob options? For example, should I be considering the Meade Lightbridge 16 for a little more money, or the Orion 12 intelliscope (not that I am looking for the intelliscope bit) for the same money as the 14" Skywatcher? As my wife and I are both around 5ft. 8" I have been slightly put off the idea of standing on a platform for observing, but maybe this is worrying over nothing. As we will be loosing a high quality instrument to fund this dob I would like to end up with something we would be happy to settle for (once the usual upgrades / mods have been completed etc). This really does need to be a scope that has some longevity. I genuinely have finished my eyepiece collection and have no need to either upgrade or purchase additional glass - I would like to think I am investing in a large aperture scope that is a keeper for, perhaps, approximately 10 years. So my final dilemma is weighing up between a 14" Skywatcher Flextube vs 16 Meade Lightbridge vs 12” Orion Intelliscope vs something else that I don't key know of... Eek! Best regards, Rob
  14. Greetings fellow stargazers, I find myself with a rather frustrating dilemma... We have recently moved to a new home that (finally) benefits from pretty dark skies and a south east position from the garden. I now also have the ability to store the scopes in a securely locked garage. Since the move, the Skywatcher Dob (10”) has been out on every clear night and our Tele Vue 102 refractor has remained permanently indoors. I am relatively new to dobsonian scopes having come from the SCT then Refractor camp, but am absolutely sold on their design. The set up time is half that of our refractor. The only area the refractor really wins on is cooling down to thermal equilibrium. I always believed that a high quality APO was the best companion to a dob, however, I am now starting to think that a 10” dob is a good ‘Grab and Go’ companion to a much bigger dob – such as Skywatcher’s new 350p flextube? I have the room to store it, however, it will probably be just me setting it up. The frustrating bit is that will have to sell the Tele Vue 102 to finance the 14 dob and required upgrades (Moonlight focuser, Astrozap light shroud, Telrad / Rigel finder, etc). After consideration the 16" would be just too big for me to handle, but I think the 14" might be ok? As wonderful as the views are through the Tele Vue unfortunately aperture fever (may) win over as the hunt for galaxies is my guilty pleasure – an area that the Tele Vue was never really designed for- its more of a planetary / double star scope. It would be a great scope for astrophotography, however, I am purely a visual observer. Does anyone else use a smaller dob as a grab and go, with a bigger scope for those moon free nights? I am so very tempted to go down this road, but don't know enough about the 350p flextube to take the plunge yet - there isn't that much available online about them. Would you do it... sell the refractor for a big(ish) dob + little(ish) dob? Best regards, Rob
  15. Rob_UK_SE

    What eyepieces to stay away from?

    My shortest lived eyepiece experience was courtesy of the old Celestron X-Cel (not the newer LX version). On paper they looked quite attractive with good eye relief etc, however, they suffered horrendous amounts of kidney beaning. They were promptly returned to the store. Considering your budget, perhaps stay away from all things green (Tele Vue). Once you start down that path it's most certainly a slippery slope towards a full set. Not a bad thing as such, but very bad for the wallet. Best regards, Rob
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