Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_30_second_exp_2_winners.thumb.jpg.b5430b40547c40d344fd4493776ab99f.jpg

Search the Community

Showing results for tags 'dobsonian'.

The search index is currently processing. Current results may not be complete.


More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • Welcome
    • Welcome
  • Beginners
    • Getting Started General Help and Advice
    • Getting Started Equipment Help and Advice
    • Getting Started With Observing
    • Getting Started With Imaging
  • Community
    • Official SGL Announcements and Events
    • SGL Challenges and Competitions
    • SGL Star Parties
    • Star Parties & Astro Events
    • Celestial Events Heads Up
    • The Astro Lounge
  • Retailers
    • Sponsor Announcements and Offers
    • FLO Clearance Offers
    • IKI Observatory
    • Supplier Reviews
  • Astro Classifieds
    • For Sale / Swap
    • Wanted
  • Equipment
  • Observing
  • EEVA (Electronically Enhanced Visual Astronomy)
  • Imaging
  • Science
  • WADAS's WADAS Discussion Forum
  • Beaufort Club's Topics
  • Swindon Stargazers Club's Topics
  • East Midlands Stargazers''s Topics
  • Central Scotland Astro's Topics
  • SGL Cumbrian Skies's Topics
  • Herts, Beds and Bucks Group's Topics
  • SGL East Anglian Group's Topics
  • South Leicester Observers's Topics
  • South Wales Group's Topics
  • SGL Surrey Observers's Topics
  • South Yorkshire Stargazers's Topics
  • Yorkshire Astronomers's Topics
  • Devon and Cornwall's Topics
  • West Midlands's Topics
  • Essex Cloud Dodgers's Topics
  • Essex Cloud Dodgers's New equipment
  • NLO and Planetarium's Topics
  • Astronomical Society of Edinburgh's Discussion
  • Dorset Stargazers's Topics
  • Hairy Stars Club (Comets)'s Tutorials and Guides
  • Hairy Stars Club (Comets)'s General Discussion
  • Hairy Stars Club (Comets)'s Observing Campaigns
  • Hairy Stars Club (Comets)'s Analysis results
  • Hairy Stars Club (Comets)'s Useful Links
  • Pixinsight Users Club's Pixinsight Discussion Forum

Calendars

  • Astro TV
  • Celestial Events
  • SGL Calendar
  • Astro Society Events
  • Star Parties
  • WADAS's Events
  • Beaufort Club's Events
  • Astronomical Society of Edinburgh's Events
  • Dorset Stargazers's Events

Blogs

There are no results to display.

There are no results to display.


Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


AIM


MSN


Website URL


ICQ


Yahoo


Jabber


Skype


Interests


Location

Found 96 results

  1. Very happy with it! Wish the sky were clear, but as we all know, when we buy astro equipment, it's cloudy! Argh! The telescope was collected from David Lukehurst at noon and then we travelled back to Cambridge. John Nichol primary mirror: 37mm thickness, Suprax. Hilux coated. Optics 1/8 PV wavefront 1/27 wave RMS. Strehl .95. Secondary mirror: 62mm MA. Here a few photos:
  2. Hi, Looking for a 12" DOB (or larger) which can be transported to Prestwick, Ayrshire. Any brand, as long as the telescope is optically sound and in good working order. I'm a reliable buyer who has bought and sold on this site before. Thanks, Mark
  3. Hi all, Last night was the best night of astronomy I've had in my short time delving into this passion. It was simply incredible. Fortunately my dear friends the midgies have departed Scotland for another season. This means I can now stand at the scope without ingesting a lungful of tiny biting insects and concentrate on what I am observing. Always a plus! Two nights ago I went to my local dark spot with my 200p SW reflector. It was wonderful. LP map shows Bortle 4, but I would actually say it was a 3 or possibly a 'bright 2' when the lights go down a bit in the wee hours. Last night, I took the 20" dob and parked up. I am finding it easier and easier to move this beast around, but it's still a little bit of work to set up at the end of the day (literally). It can't all be so easy! I'm fairly new to astronomy and my scopes haven't seen a huge amount of use. After several failed attempts to get the GOTO working, I finally sussed it last night. It was just a few simple things really - small errors on my part such as a misplaced washer which blocked the azimuth from using its full range of motion, combined with a limited view at home which prevented me from doing a successful align. A huge relief to get the GOTO up and running, but I now feel a bit like I'm cheating! I don't feel guilty enough to not use the GOTO however Frankly, it's brilliant and was putting objects bang in the centre of the EP. I arrived about 6pm yesterday so plenty of time to set up. I left my counterweights at home and thus ended up strapping a small vinyl bag of tools and tyre jack to the underside of the mirror box with a tie-down. Worked really well actually! Can fine tune by removing a spanner or two. A few drops of rain blew through just before dusk but then rapidly cleared off, so all systems go. I tripped over the power cord after my first successful align. And then did it again a minute later after my second align! Will need to tidy that arrangement up or put some of my glow tape on the cable. Plenty of practice then doing an alignment, haha. M57 Ring Nebula for starters, I've been playing with my Baader 36mm aspheric quite a lot lately, I like the wide views. The Ring was fairly small through the 36mm but bright and crisply defined with an apparent faint blue tint. I then swapped to the 21mm Ethos and OIII which stayed in the focuser most of the night. Next stop was NGC6960, Western Veil Nebula or 'Witch's Broom Nebula' which was mind-blowing. It appeared as a silvery apparition which threaded right across the sky and extended well past the FOV from the 21mm Ethos. Scanning along its wispy tentacles was amazing. There's something unnerving about viewing it, it gives me goose-pimples, just otherworldly. The Eastern Veil and Pickering's Triangle in the central area were also clearly prominent, albeit slightly less luminous than 6960. The Veil was also clearly visible without the OIII, but with much more 'background noise', i.e. stars competing for attention. Following this, I slewed over to the Cocoon Nebula, but only saw a very dark lane practically void of stars. That was interesting in itself as it was so apparent by virtue of its darkness.. I don't know if I bumped the scope alignment of if I was just too impatient to punch another object in to the handset, but didn't spend a huge amount of time chasing it. In hindsight, I think I slewed to the wrong end of the dark lane. I'll find it next go. I then lined up on the Crescent Nebula which was easily visible, lots of fine filamentary details observable after some time studying it. A beauty. Next was Dumbbell Nebula which practically looked 3D through the big dob, just jumped right out at me. Another simply amazing sight. I spent quite a long time staring at it and could easily see the entire shape and structure extending from the 'Apple Core'. I remarked last night it looked like it was hanging inches in front of the scope. That's sheer aperture working I suppose! At the end, I spent some time just slewing around and having a mesmerising look across the sky, just taking in the depth and variable magnitude of stars that a big scope can display. I was already running on three hours' sleep from the previous night and by this time, I was starting to crash but was on a natural high. I crashed into the bed happily. Can't wait for another clear night with the big dob. I was a bit worried a few weeks ago that I'd bought something I didn't have the time or skill to fully appreciate, but getting the GOTO up and running and being able to rapidly slew to various objects really put things into perspective. My 200p is a wonderful, portable scope, but in comparison, 20" of aperture is simply a completely different level. It is like the difference between a small grainy 640px video and high definition 4k with the brightness cranked right up. Tonight I shall stay in, sleep well and dream about how much discarded glass is needed to cast a 36" mirror blank and how many years it would take me to figure it... Clear skies all
  4. Hello folks, for long I have been browsing the internet to find a suitable 10in dob and despite lack of reviews, I have decided to take the plunge with the Bresser Messier 10in Dobsonian. There was some doubt at first, especially when considering the popularity of similar scopes from Skywatcher, Meade and GSO. Even though Bresser is relatively new to the market, it has some clever features: 1. The massive 2.5in hexagonal rack and pinion focuser is very solid and the movement is smooth. Despite being only single speed, Bresser sells an a dual speed 10:1 extension. However, I find the movement precise enough and do not need the extension at the moment. 2. Optical finder scope feels a bit cheap but it is a nice upgrade over the red dot finder I had on my previous scope. 3. Rocker box style base allows disassembling the scope into two pieces (OTA and base). 4. Tube rings allows the scope to be easily balanced when adding weight + after adding a suitable dovetail plate, the OTA can be used on an equatorial mount (if you plan to upgrade to an eq mount, I would consider the 8in model, as an eq mount for the 10in would be expensive). The only negative comments I can give about the scope is the production process. There were some minor issues with the assembly with the scope as parts did not fit properly. First problem was with one hole drilled deeper (loosening the particular screw fixed the issue). Another problem was with the altitude wheel as it made the OTA to pop out from the rocker box. (A loose screw on one of the plastic pads between the box and altitude wheels was causing this. Make sure all these screws are tightened and below the surface of the pads). Lastly, I assume there must have been a mistake in the quantity of items included (I got twice as many screws for the rockerbox and 2 eyepieces instead of one, both were 25mm super plossl but the standard was a 1.25in advertised on the bresser webpage, while the other was a 2in wide angle) I did not have the opportunity to test the scope outside properly due to clouds. Update: 01.06.2017 Had the chance to try it out on the moon and jupiter to a max magnification of around 160x. The results were very sharp and detailed views. Unfortunately, clouds rolled in before it got dark enough to observe DSO's. I am waiting for clouds to clear and a package with a 42mm wide angle eyepiece and a 2in GSO 2x ED barlow to arrive next week.
  5. Hello all! I just installed this Lacerta 1:10 Micro Transmission focuser on my 8” Skywatcher Dobsonian. It is a direct replacement for the stock focuser and works extremely well. I was surprised at how easy it was to install! Ordered it from 365Astronomy and got fast shipping.
  6. I need a a really accurate,easy to use collimating tool. I have a used laser collimator but it does not fit snugly in the focuser so I feel it’s not very accurate. The idea of collimating causes me some anxiety anyway, so accurate and easy is the key! Can any of you offer any suggestions to help me out?
  7. Hello all! I am mounting an Explore Scientific 8x50 Right Angle Erect Image Illuminated Finder Scope on my Skywatcher Dobsonian. The original Skywatcher mount only had one bolt hole. The Explore Scientific base requires two bolts. I was told to make sure to have the primary mirror cover in place and to place a cotton sock over the secondary mirror. My concern is drilling into the tube itself. Are there any other precautions I need to take so that that it doesn’t look like it was drilled by a bunch of Wallys? LoL! Greg
  8. WOW! Had a great view! Used my Pocket Sky Atlas to plan the night, then I just shot right out there! Saw the 7 Sisters (Pleiades), then hopped to the Orion Nebula! Used my ES 18 mm to find it then switched to the Morpheus 12.5 mm and could actually see wispy parts of the Nebula! ( I guess that’s what it was! LoL!) Really amazing! Called the wife out to take a look. Next I want to find Andromeda! Greg
  9. Hey guys. After many years of waiting, I've decided to finally go for my first telescope. Yet, today find myself stuck between two excellent entry-level options, so I'm looking for some help. Before I get straight to my questions, I'd like to share some information about what I'm expecting to do with the equipment (among other stuff). - Objectives: Deep Sky, and some planetary observation. No interest in astrophotography, GoTo, or any other device (maybe/eventually in the future). - Budget: Given complementary I'll be getting a 2x Barlow (SkyWatcher; achromatic), and a starguider laser collimator (1.25-2), these are my two best available options to fit on its range. - Light pollution: Low-Med. Being that said, here are my questions: - Mount: After days of heavy research, so far hardly found a review about it; What do you guys think about the AZEQ AVANT type of mount?; Could it beat Dobsonians?; Would it be a better option in my case? and if so, why? - Conventional Tube vs Heritage's Compact Flex Tube: What are the differences (pros-cons) I can expect from one and the other? (despite no difference between mirrors and diameter). - Explorer 130P AZEQ AVANT (newbie question): Would it be possible to transport the whole structure armed from one spot to the other in my yard? Any help/opinion welcomed. Happy 2019!
  10. A couple images I was able to take with my iPhone and my Dobsonian XT8. using the Camera +2 app Anyone know any other good phone apps? ?
  11. Hi there, Jon from Montreal, just saying hi. Got my first REAL telescope today. Skywatcher Classic 200P Dobsonian 8". I say real cause the 2 other telescopes I've own have been bought at art store or toys r us. Unfortunately I have yet to use my new Dob' due to all this cloud cover, hopefully it will clear up at least for the weekend. If any one has any advice to give me, about eye pieces etc.. feel free to
  12. In my struggles with finding someone who wants to head out to the desert to do some late night observing... I have taken to my back yard in LA.... Honestly I know these images are not anything compared to the things that people post here... but I am slowly working on adapting to the living xD And with taking the images with a cellphone camera... lol... I cant really complain... iPhone X Camera, 2x Barlow, 25mm Eyepiece... I know sad attempt... but planning my trip out to the desert for when the real camera gets here! If anyone has any advice for city observing... They would be very appreciated... I know that there is a filter that is designed to try to remove most of the city lights.... but I have no idea what its called.
  13. Looking at this scope as my first decent scope. Anyone know pros v cons?
  14. After a long wait (ordered on May, received it on August) I finally received my new baby The scope is the Sumerian Optics Alkaid, 12 inches version (300mm). http://www.sumerianoptics.com/products-price/ It was ordered from Teleskop Express (DE) It's a bit expensive for a dobsonian telescope, but I was really looking into something very portable. The "fold into a hand-luggage compliant suitcase" feature is really amazing. Not many airline companies do actually allow so much weight (16 KG), but still you can find a few, and I'm gonna see what happens on my next trip in Italy in a couple of days. I haven't yet used it a lot, due to weather, moon, and laziness but these are my first impressions: Unboxing The scope was very well packaged, it was a mess to cleanup the house with all that foam peanuts This of course is all very nice for transport, what was less nice is that all this, and the protective cotton over the mirrors, did create a lot of dust and filaments all over the mirrors. Nothing serious, cleaned most of it with a little air pump, but they might think of a different protection layer for the mirrors. Assembling The first time you read through the provided manual, get it wrong on a few steps, but overall instructions are clear enough, and most of the pieces can be mounted in one way only, so it's quite straightforward. Mounting the suitcase back requires some attention too, but there are instructions for this as well, so it's easy. After doing it a couple of times, you can really assemble and disassemble the whole thing in a matter of 5/10 minutes. Collimation This is where I'm still having some problems. Some of them due to the scope it self, but some might also be because of my inexperience with it, and with the Cheshire tool (I was previously using laser collimators on smaller newtonians). The secondary collimation is quite straightforward. I'm still having some minor issues in aligning it to the focuser, but with more experience it should get better. The primary is what troubles me most. Both the secondary and the primary use a two screws system. The third one is fixed, and you should align it by moving the other two. This in theory should work, but it seems that the two screws don't have enough run to compensate for major misalignments. Also, the screws movement is quite irregular, and after a few tries, one of them became very very hard to move. I will try again using some grease, otherwise I might think of replacing them with some plain old allen keys. Movements and stability Movements seem to be quite smooth. The scope is also provided with a shock cord "counterweight" system for balancing heavier eyepieces. I don't have any (yet), but I'm planning to buy a 1KG ep with a big FOV, so I tested balancing with a 1KG counterweight attached to the focuser, and it seems to hold on quite well. I also bought a third shock cord in addition to the two provided, just in case I need more traction. Red dot finderscope Mixed feelings with this: it certainly looks nice, and it also has a green setting (for daily usage/bright objects I guess?). But to align it you need an allen key (included), which feels a bit uncomfortable, and the window doesn't seem clear enough, blocking too much light, so it's a bit difficult to point at faint objects/stars. The finderscope is also too close to the tube, so it's not very comfortable. I will have a few more runs, and then decide if I want to replace it with a different one (I have a Celestron Starpointer Pro, which I have used with quite some satisfaction). Light shroud There is a little shroud provided, but honestly I haven't even tried it, I really didn't like the idea of an open truss. Instead, I sewed a full length shroud using some lycra cloth. I added some magnets to the top and bottom of the telescope, in order to keep the shroud in place. First light I had a quite unlucky first light, actually. There was too much dew, and the moon rose slightly after 11 pm. I just made it to view a couple of objects (easly resolved polaris b, the ring nebula), but the eyepieces got quickly covered with dew. In a way that was also useful though, since I both tested that my light shroud protected quite well the primary mirror (no sign of dew in there), and the built in anti-dew of the secondary, that in 5 minutes cleared it out. Overall impressions I still have to familiarise with it, particularly with the collimation, but I am really satisfied with this setup. The portability side is quite amazing, I could put it in the back of a quite small car, with lots of room to spare! I'm looking forward to a few more detailed tests over the next few weeks, in a fairly darker spot. I'm a bit worried about the airplane trip, but we'll see about that...
  15. Good day to all who come by this post. I have a old 10 inch Dob that i made about 7/8 years ago that is rather knackered after so many nights observing. The scope was not very well made as it was my first attempt at building one. since then ive lern't so much, building about half a dozen scopes. Especially after building my 20" and reading David Kriege and Richard Berrys book The Dobsonian Telescope. Which i highly recommend. As you can see from the image attached the old scope was based on Obsession telescopes, Ultra compact design. the secondary cage was originally one ring with the spider protruding up like a pyramid. i decided to change this to a fully enclosed cage dew to stray light and wanting to mount dew controller and other things to it. Also another thing that ive not seen on any other scope is all the axes ran on bearings this worked really well but Teflon and formica is just as good if not better and i find its easier to get the scope balanced. I also used telescopic camera tripod poles for the poles this was sometimes a hinderance as i would have to re collimate a couple of times during the night. All in all the scope worked fairly well and ive had so many fantastic nights with it but its time to rebuild. I had some materials left over from the 20 inch Dob build and ive spent about £100 on new hardware and poles. I gave the mirrors a good clean the other day they are in good condition with no sign of ageing. The rebuild will be very similar to the 20" so it will be like a little brother to the 20" The build is imminent so will post update very soon Thanks for reading. Pete
  16. Anyone fancy a punt on this 10" dobsonian. Needs TLC but cheap. No connection with seller of course. https://www.gumtree.com/p/telescopes/10-dobsonian-reflector-telescope-custom-built/1308162351
  17. Hi again About 2 years ago i built a 4.5 inch ultralite fold out travel / hiking Dobsonian. weighing in at about 2.5 kilos with eyepieces, collimator and tools. Here is a link to a Thread about the 4.5 Dob - http://stargazerslounge.com/topic/237230-45-compact-travel-scope-for-hiking/?hl=compact This works well but i always felt i could get it lighter and more compact when packet down also me loving building scopes so much i will find any excuse to build another one. This time i have decided to go all metal. Mainly using Aluminium. i want to design the dob as minimal as possible. All i need to do now is design the mount. probably something very simple. here are some plans and some of the build so far. thanks for reading. Pete
  18. I wouldn't want to miss observing the Sun in a full-size 300mm filter, the detail compared to smaller instruments is such a joy to see. I do have an off-axis mask for my 300mm dob but not all the time. If daytime seeing is too bad for such a large scope, I'll switch to a smaller one, but the extra resolution and ease of spotting micro-detail thanks to the brightness is something I can't do without. A sheet of 500mm wide Baader fillm allowed me to craft this. I had enough left to cut several smaller filters. To protect it I made a storage box from cardboard of obvious origin. The box had to be custom-made to save space in my dwelling, and it also hosts a bahtinov mask for nighttime. At f/5 fine focus is not too hard with the smooth single-speed focuser, but in order to enjoy moments of clarity immediately at high power, I pre-focus with the bahtinov, which sees through turbulence, what a nice invention, and simply wait for calmer air. No need to rush to fine focus and waste precious moments. This mask needs to be copied in some sort of plastic, the cardboard trial proved the number and width of the slits are fine. The rear of the filter shows the four clips mating the four button screw heads outside the tube. And this lateral view shows the sandwiching. A rigid backing plus two layers of lightweight neoprene foam cut from a cheap mat in tiger-stripe deco, its poor taste matching its 7€ price. The bottom sheet used to be a shower booth panel, my neighbor had in its garage. Hey, do you need that? No? Okay, thanks! The Baader film is held between the neoprene sheets by staples and many strips of tape. The neoprene is held to the shower booth sheet by little collars, and its edges are sewn together for a finished look. Oversize 10mm stitches didn't take too long to do, and the foam layers can be separated for replacing the film, something glue would prevent. Holes in the neoprene allow to check that the clips' bolts are always tight. Close-up of a clip. They are made of a material whose name I forgot, I only remember it is made in the UK (thanks, guys!). This is a PVC foam that's much easier to cut, drill and sand than full-density PVC, and it's much lighter (thanks, air bubbles!), which is essential for an item that's at the front of a scope where leverage is maximal. My GSO dob has four of these screw heads, one for each spider vane. They proved very convenient for attaching the filter. The black knob is an add-on to move the scope without having to grab the large tube with both hands. Pretty obvious what we're seeing here. Note the clip is flush with the tube, and pressed hard against the scope's metal rim for a very secure and tight fit. Only four clips but eight attachment points, really. Building this with tight tolerances was more lengthy but more reassuring. It is impossible to disengage a clip by accident because tolerances are too narrow, and the shower booth plastic tough spring action doesn't allow it. But should it happen three clips would hold the filter safely. All three layers of frame material are flexible, so, to remove the filter from the tube you just bend it at a corner while you lift the clip, and the clip disengages. I already rebalanced the dob by pulling the 7-kilo mirror to the rear thanks to shorter and tougher cell springs but I'm working on a sliding counterweight made of pliable steel ribbon. Adhesive felt pads protect the paint. Thanks to the large hole the 300mm filter is not too heavy (and it's used without the finder) but the off-axis mask has only a 115mm hole, so it's heavier and may require this. While I study the combinations of heavy or lightweight eyepieces, finder/no finder, mask, filter, I can change the experimental counterweight by cutting off or adding pieces of steel ribbon. Little mounting nuts and bolts through the many holes, there's always one at the right place. Ever hated to feel the Sun while loving to watch it? If you have no sunshield you did. Heat is a discomfort on the head, and light kills off contrast. So I cut a plastic folder in this weird pattern to allow sliding it between the shower booth plastic and the neoprene mat. When it's stuck there it makes quite a large area of shadow, that's such a relief. But that's also only a prototype that wants to be made again with a better material. Has to be opaque, quite thin, very lightweight, but rigid enough. I'll stumble upon the right material sooner or later.
  19. Skywatcher 14” FlexTube Dobsonian GOTO with extras Skywatcher Skyliner 350P 14" F/4.5 FlexTube GOTO for sale. Comes with : Skywatcher PowerTank 17Ah. Heater strip on the secondary mirror. does NOT come with the Dew Controller. Telrad Finder and Telrad Riser Base. Skywatcher 9x50 Finderscope 25mmSkywatcher Super Plossl eyepiece Skywatcher 2x Barlow lens. Dual-Speed 2" Crayford Focuser with 1.25" adapter Astrozap light shroud for Skywatcher FlexTube Cheshire Collimating Eyepiece Laser Collimating Eyepiece. This a big scope with great views. Can be used as a goto or a push to scope. In excellent condition. The scope can be assembled and disassembled in about 10 minutes or so. £1000 Buyer collects. Nottingham NG7 Area. Thanks
  20. Hello, I am sorry in advance if this specific subject has been discussed before, but couldn't find it. In any case, I need your wisdom I am a proud owner of the best-seller Skywatcher 200P Dobsonian (8" 203mm aperture, 1200mm FL). Like many, I started relatively cheap because I wanted to know if I'd love the hobby or not. Turns out I did. Also like many, after the first few months of pure visual joy, I got incepted with the idea of AP. A couple years later, I am using a DSLR, a ZWO ASI 224MC and recently a TV Powermate 2.5x. These have all been incrementally improving the quality of my shots, which are planetary only for now. The big elephant in the room is that this specific OTA is not ideal for AP, especially planetary. However I am thinking of moving on to the next step, and acquiring an HEQ5, to convert and put the Dob 8" OTA on it for visual and AP. Here is where I would like your opinion. Do you think that would be a waste? I have heard that this tube being so big, heavy and bulky, would push the HEQ5 at its limits for visual, and a NO NO for AP, especially with heavy powermates and the ZWO on it. Is that true? And, assuming it is true, should I completely ditch the Dob, and focus on choosing a new better OTA? I was hoping to do that incrementally for practical and monetary reasons, for example this year doing the conversion, and 1-2 years from now getting a proper tube. However if it turns out to be a waste, I would like to avoid that path. Honest opinions will be appreciated. Thanks in advance, Alex
  21. I've been given a lovely Dobsonian, the balance isn't quite right, I need slightly more weight at the back, how do I alter the weight? Also, I need advice in collimating it, without a collimator, is there any other way to get it all sorted? Thanks in advance.
  22. I am building a newtonian reflector telescope, and I could use some help. This is my first DIY telescope, so I am pretty unprepared and don't know where to buy some stuff, namely optics. I am planning on going for a 8" aperture, but I can't find a website that sells mirrors. What website or sites has good quality mirrors but isn't to expensive, and what mirror coating is best? All help is appreciated, thank you in advance!
  23. Skywatcher Skyliner 150P Dobsonian Perfect first scope - simple to setup and use. Used Skywatcher Skyliner 150P Newtonian telescope on a Dobsonian base. Excellent condition. Comes complete with fnderscope, boxed 2x Barlow, Super 10mm and 25mm eyepieces plus a Meade 9.7mm Plossl eyepiece. £150. Inspection welcome. Collection only from Rushden, Northamptonshire.
  24. Hi stargazers! I don't have a DSLR, but I have expensive mirrorless camera so I need wide lens on top of the eyepiece. I need at least 65 degree fov. I did research but I still didn't find anything good. Luminous Thank you in advance!
  25. Hi, I bougth a skywatcher skyliner 200p (a newtonian dobsonian telescope) and I should receive it in 2 weeks. Since I know nothing yet of the practicalities of astronomy I wonder what accessories I should get initially for it if any. I would love to hear your advice. Collimation : From what I gathered, collimation seems a necessary thing to perform, even with new telescope, right? I read a lot of good and bad thing about laser and only good thing about cheshire. Since I ll be alone operating the telescope, which one should I get if any ? a cheshire like this one https://www.ebay.co.uk/itm/Ascension-1-25-Short-Cheshire-Collimation-Eyepiece-UK/322431518490?hash=item4b126a871a:g:VYkAAOSwWxNYrXEi or a laser (in which case which one would you recommend )? Any resources on how to perform collimation. That sounds a bit scary Finders: I heard a lot about telrad and I am considering one is a rigel quickfinder similar or better ? (https://www.firstlightoptics.com/finders/rigel-quikfinder-compact-reflex-sight.html) Can these be installed without hassle on my skywatcher ? I also heard that the default straight finder installed on the skywatcher is not very nice to use as you need to bend yourself (and the image is inverted) Should I get a right angle one like : https://www.firstlightoptics.com/finders/skywatcher-9x50-right-angled-erecting-finderscope.html How would I install it? Is it as simple as replacing the straight one ? precise finding In order to find objects in the sky, I though first to buy a push to telescope like the orion xt8i but because of the price, I decided to go with the simple skywatcher skyliner 200p. This now means I have to learn to navigate in the sky, which is probably a good thing anyway. Finders helps here but to be precise, I thought about "setting circles" and inclinationmeters but these would require some time to built it and attach it. What do you think? Any good resources ? Probably something I can reconsider later? I might instead try the "skeye" app (https://play.google.com/store/apps/details?id=com.lavadip.skeye) but I ll need to find a way to fix my phone on the telescope. Protection / care: Is there any precaution I should take when storing my telescope (while not in use)? Any useful accessories ? Filters: Since the moon is such easy target and fascinating on its own. should I get a moon filter ? What about planetary filter, are they worth it ? Any other thing I should consider getting ? Any recommended books ? Cheers Ronan
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.