moonsat Posted March 2, 2021 Share Posted March 2, 2021 Just joined the group i have been playing at this for a while now and just have a cheap supermarket Dobson 76/350 with a H20 mm and sr 4mm (What does the H and R mean ) i want to progress now to a better scope any advice ? Link to comment Share on other sites More sharing options...
dave34 Posted March 2, 2021 Share Posted March 2, 2021 Welcome to the lounge. Link to comment Share on other sites More sharing options...
PeterCPC Posted March 2, 2021 Share Posted March 2, 2021 Hello and welcome. Link to comment Share on other sites More sharing options...
wulfrun Posted March 2, 2021 Share Posted March 2, 2021 Welcome to SGL. The H prefix probably means "Huygens" and the R in SR might be "Ramsden" but I'm not sure on that one. Both refer to the optical design IF that's what the manufacturer meant, which isn't certain. Take it with a pinch of salt. 2 Link to comment Share on other sites More sharing options...
Tiny Clanger Posted March 2, 2021 Share Posted March 2, 2021 31 minutes ago, moonsat said: Just joined the group i have been playing at this for a while now and just have a cheap supermarket Dobson 76/350 with a H20 mm and sr 4mm (What does the H and R mean ) i want to progress now to a better scope any advice ? Welcome. The 'H' means Huygens, which is a type of lens arrangement ,' SR; is Symmetric Ramsden another one. Both are old designs, simple and cheap to make. I'd suggest you make a first , bargain upgrade to a more modern plossl design , these are easiest to use when in mm of about 12 or over, and can be had for around £25 . Something like a 15mm woild sit nicely between the ones you already have and show you what an improvement can be made . Like one of these https://www.firstlightoptics.com/astro-essentials-eyepieces/astro-essentials-super-plossl-eyepiece.html Some further reading on eyepieces for you here and here 2 Link to comment Share on other sites More sharing options...
laudropb Posted March 2, 2021 Share Posted March 2, 2021 Hello and a warm welcome to the SGL. Link to comment Share on other sites More sharing options...
Floater Posted March 2, 2021 Share Posted March 2, 2021 Welcome. Hope you have lots of fun on the learning curve. 🙂 Link to comment Share on other sites More sharing options...
wookie1965 Posted March 2, 2021 Share Posted March 2, 2021 A warm welcome to SGL Link to comment Share on other sites More sharing options...
Neil H Posted March 2, 2021 Share Posted March 2, 2021 Hi welcome to a big friendly family Link to comment Share on other sites More sharing options...
sloz1664 Posted March 3, 2021 Share Posted March 3, 2021 Hi, and a very warm welcome to the Lounge Steve Link to comment Share on other sites More sharing options...
Waddensky Posted March 3, 2021 Share Posted March 3, 2021 On 02/03/2021 at 12:38, moonsat said: Just joined the group i have been playing at this for a while now and just have a cheap supermarket Dobson 76/350 with a H20 mm and sr 4mm (What does the H and R mean ) i want to progress now to a better scope any advice ? Hi, and welcome! Excellent explanations in this thread when it comes to the eyepieces. Both the Huygens and the Ramsden are fairly basic designs, and the 4 mm SR is next to useless (although my first wonderful telecope experiences were with one of these years ago!). If you'd like to progress to a better scope, you might consider a larger dobsonian, a 6" or 8". They usually come with plössl eyepieces, they are basic too but a lot better than the ones you have now. Still, your next telescope also depends on your budget, primary observing targets and some other considerations as ability to lift weight and where you'd like to observe (back garden or required to travel). So, enlighten us, so we can help you - but above all - enjoy your stay! 🙂 1 Link to comment Share on other sites More sharing options...
moonsat Posted March 3, 2021 Author Share Posted March 3, 2021 Skywatcher Skyliner 200P Dobsonian Telescope - Mint Is this a decent one to buy it comes with a Super 10 and 25 eyepieces 25 says wide angle eye relief and it is under 300 £ hardly used 1 Link to comment Share on other sites More sharing options...
johninderby Posted March 3, 2021 Share Posted March 3, 2021 It is a good scope but the eyepieces are cheap low end stuff. The 25mm is usable but the 10mm is poor and are usually replaced fairly soon. Think of the stock eyepieces as something to get you started. A few weeks ago before the big price increase the scope sold for £299.00 or so new and could be picked up second hand for about £200.00 so it looks like the seller is trying to get what they paid for it if they are a private seller. However now they are bringing more now what with the price increase. 1 Link to comment Share on other sites More sharing options...
Waddensky Posted March 3, 2021 Share Posted March 3, 2021 15 minutes ago, moonsat said: Skywatcher Skyliner 200P Dobsonian Telescope - Mint Is this a decent one to buy it comes with a Super 10 and 25 eyepieces 25 says wide angle eye relief and it is under 300 £ hardly used Yes, excellent telescope. Those eyepieces are the plössls I mentioned. Not high-end of course but good enough to get started. Not familiar with the British prices on the used market but I'm sure others will chime in. Link to comment Share on other sites More sharing options...
Tiny Clanger Posted March 3, 2021 Share Posted March 3, 2021 21 minutes ago, moonsat said: Skywatcher Skyliner 200P Dobsonian Telescope - Mint Is this a decent one to buy it comes with a Super 10 and 25 eyepieces 25 says wide angle eye relief and it is under 300 £ hardly used A good 'scope, but do be aware of the size and weight of the thing before making a decision ! Link to comment Share on other sites More sharing options...
bingevader Posted March 3, 2021 Share Posted March 3, 2021 I agree with John, unless it was purchased very recently, then that does seem a lot for a second hand 200P! Link to comment Share on other sites More sharing options...
Tiny Clanger Posted March 3, 2021 Share Posted March 3, 2021 Those two eyepieces are the standard modified achromat (MA) ones supplied with many skywatcher 'scopes, the 25mm is OK, the 10mm not. You woud want to upgrade the 10mm to something better at the very least Link to comment Share on other sites More sharing options...
johninderby Posted March 3, 2021 Share Posted March 3, 2021 (edited) The Svbony Super Plossls can be picked up cheap on eBay at the moment. They are actually pretty decent eyepieces despite the price. https://www.ebay.co.uk/itm/SVBONY-Super-Plossl-Eyepiece-1-25-52-SPL-FMC-Eyepiece-for-Astro-Telescope-UK/392911234626?epid=4040205546&hash=item5b7b55a642:g:noQAAOSwxCZgM2ub https://www.ebay.co.uk/itm/SVBONY-1-25inc-SPL-Super-Plossl-Eyepieces-26mm-FMC-52-for-Astro-telescope-SV118/164266116070 Edited March 3, 2021 by johninderby Link to comment Share on other sites More sharing options...
Dave Lloyd Posted March 3, 2021 Share Posted March 3, 2021 Hi there and welcome. Link to comment Share on other sites More sharing options...
Spile Posted March 4, 2021 Share Posted March 4, 2021 Yes the 200P is a great Dobsonian. That used price is more than I paid for a new one last year though 😞 I would get use to it before considering any upgrades but it was a very short time before I replaced the EPs and got a Telrad. I've put my first impressions of the Skywatcher here and I would definitely recommend the finder safety harness. Link to comment Share on other sites More sharing options...
Waddensky Posted March 4, 2021 Share Posted March 4, 2021 10 minutes ago, Spile said: I would definitely recommend the finder safety harness This. I always wondered why it was designed this way. 1 Link to comment Share on other sites More sharing options...
Pete Presland Posted May 23, 2021 Share Posted May 23, 2021 Hi welcome to SGL from Pete in Bedfordshire 🙂 Link to comment Share on other sites More sharing options...
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