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Found 39 results

  1. Hi All, I purchased a GSO 6" f/4 Newtonian "Astrograph" late last year and eventually found that stars on one corner were egg shaped while taking images. I narrowed it down to improper centering of secondary mirror from the factory and resulting tilt. Long story short, after numerous iterations, I used the Advanced Newtonian collimation technique by Astro Shed guy and ended up with the below pic of the optics. Does it look ok or do I need to do more? I will be checking with a Howie this weekend too.
  2. Greetings stargazers, I'm considering buying a new telescope (my first telescope) for astrophotography, and some visual astronomy. But I can't decide which type should I get. I mainly want to photograph deep sky objects. After testing some variations in Stellarium I am worried that some deep sky objects won't fit into the aperture of an 8" reflector. I'm wondering which type should I get. And also I'm worried that I won't be able to photograph anything with a small refractor because I live near a city. I am also open to any suggestions for a beginner astrophotography telescope. (around 800$ would be perfect) Thank you:) I apologise if I made any writing mistakes. Edit: I'm considering buying a Bresser Messier 203/800 or a William Optics Zenithstar 61 but I'm still open to any suggestions.
  3. Good evening everyone, I'm looking into buying my first telescope. Interested in planets and DSOs. I've narrowed it down to 2 scopes: the Orion SkyView Pro 8" reflector and the Celestron Omni XLT 150 refractor. A few people on here highly suggest the SkyView pro 8", but I'm curious as to how much maintenance is going to come with it? I'm American living in Sicily, so it's not easy for me to go to a shop and ask for help! From the price and high ratings of it, it's very appealing. But on the other hand I understand the refractors require almost nothing, just keep the lens clean. Any comments?? Thanks
  4. When the barrel of my meridian 675x4.5" reflector telescope falls below around 30 degrees it just falls down, and will only come back up above 35 degrees. This makes it impossible to observe objects towards the horizon. Any help would be much appreciated.
  5. Been waiting for days in anticipation for the first clear night with my new SW 200P reflector and HEQ5 mount. I found instantly that I couldn't locate the North Star due to bloody trees and also the moon was so bright it made all other objects so much more dim in my scope. The Polaris Alignment scope LED's are so bright I couldn't align any star in the scope at all, let alone see through it. I did check it was clear and it didn't have the cap on or the weight bar obstructing it. I tried adjusting the brightness but found no settings in the SynScan handset for my model! I also found out that my clock ring rotates even if I lock them to the specific axis. (Annoying) In the end, instead of just messing around trying to align the damn thing I just span it around and zeroed in on the moon and other stars. I found pretty quickly that I can only focus on the moon IF I use a 2X barlow lense in the chain and that the focuser doesn't move back as far as my older Vixen refractor. Anywayyyy to make the most out of the full moon and the fact it was clear I took some photos and made a mosaic out of 54 individual photo's I took. The original photo is 388MB, so I've uploaded a much smaller version. My first proper AstroPhotography photo, any thoughts or solutions to the problems I found on my first night out? I'm hoping the next time I go out, it's much smoother. Enjoy. - Pesky
  6. Good evening dear members. Could you please help me choose a telescope: I would like to be able to see nebulae, galaxy, star clusters for example, and surely Jupiter, Saturn, To start first: I can spend 400-500£, I understand this is not much, but for now I am ready to get started. My wish is to photograph as well, but in a distant future, like 2-3 years from now, because when I look at my mother's pictures I understand -this is what I would like to do. Obviously the outcome will be different if I choose for viewing or for photography. I was advised a Dobsonian will be good for viewing DSOs, and a refractor for photography. What about reflector telescopes? I have found one Bresser reflector telescope (Bresser Messier AR-152S/760), is it any good? If I will find a decent telescope what upgrades will I need (lenses)? Your help is very much appreciated. PS: I live in Haslemere, Surrey, the sky is not as polluted as in London, where I used to live. Lovelight.
  7. Hi everyone, I'm looking to buy an 8" newt for astrophotography with my Canon 6D full frame. I'm really only going to be using it for imaging so visual problems (such as back focus) aren't too much of a concern for me. I'm aware that probably whatever scope I get won't cover a full frame sensor without vignetting, but does anyone have an opinion on which would be the best? I have a CGEM mount and Baader MPCC mkIII. The ones I've been looking at right now are: 1.Orion 8" f/3.9 Newtonian Astrograph 2.Astro-Tech f/4 Imaging Newtonian I've also heard of the Sky-Watcher Quattro series and Meade LX70 series, I just haven't heard as much about either of those. Also, optics are my #1 concern. Things like weight or minor mechanical shortcomings that I could potentially fix are not as great factors. Thanks for your input! Patrick
  8. 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
  9. The awful seeing conditions continue where I am but I at least managed to get this in between the clouds last night: Details: Tasco 302012 114mm reflector telescope. Afocal through 40mm wide angle EP with Canon HF100 Camcorder. 9 Second movie clip at 1080p 60fps stacked in Registax 6 and processed in Photoshop CS3
  10. Hope someone with more experience than I, which basically means anyone that has successfully collimated a Newtonian, can answer a couple of compound questions I have based on my first and only attempt at secondary collimation of my SkyWatcher Flextube 250. 1) All three of my secondary collimation screws were extremely snug before I did anything and I was only able to comfortably turn them counter-clockwise. Is this normal? Do I need to loosen all three screws first before I can properly start collimation? Should I be turning any screw beyond "snug"? 2) Before collimating, I placed a yellow sheet inside my OTA opposite my focuser tube and I placed a red sheet between my secondary and primary. The view this gave through my focuser tube was of a red circle surrounded by a partial yellow ring (the secondary mirror stalk blocking a portion of this yellow annulus). While independently turning each of the secondary collimation screws counter-clockwise I looked down the focuser tube (both with and without a sight tube installed) expecting to see some change in the shape of the red area (more or less circular) and/or the yellow area (less or more even thickness). I turned the screws no more that 2 complete revolutions. I did not perceive any appreciable difference in what I saw and I turned each screw back (clockwise) to their original tightness before working with another of the screws. Does it make sense that I didn't perceive any change? Should I have turned the screws more revolutions? Should I have loosened more than one at a time? Very confused and looking for your help. Thanks
  11. This has been sat boxed up in my garage for a couple of years now since moving to a town with lots of trees and light pollution! It's in great condition optically and physically other than a scratch on the outer paintwork that it's had since I got it (see the bottom picture). Comes complete with tube rings as seen on the pictures. Buyer can collect or I can meet at the Kelling Star Party with it as I'm only a few miles down the road. Reduced to £160. Bob
  12. Hello,i'm gonna buy the skywatcher heritage 100p(dobsonian reflector).Many people say that one of the first things you need to do is to collimate your telescope even though you just received it.Please tell what to do is this necessary and how can i collimate my telescope easiy if needed?
  13. Hello All, I recently upgraded from a department store 50mm refractor and got the Celestron Powerseeker 127Eq, but after researching a bit more, I have found out that there are problems in the design of this reflector (Barlow lens built-in). I am currently comparing the Meade Polaris 130EQ, Celestron Astromaster 130EQ and Meade Polaris 127EQ. I just need to know any important details about all 3 of them and know which is the best choice (mount, its setting circles, optics, EPs, etc). I want to know if there are any design problems that come with it (like the C P 127EQ). I would be also be glad to know about how well these telescopes can track celestial objects and if their setting circles are accurate. I know these are a wholesome amount of question, but this will be my first "real" telescope and I hope on using it for the next couple of years, Thanks a lot!!
  14. Hello Dear Friends(I have two!) and Community, I acquired this lil guy over the weekend. Like many other users I had been hesitant about a reflector (collimation, and whatnot) but at 22 Euros I could not pass. Actually I simply wanted the mount (my first manual EQ!!), as it looked to be good for my starter needs. Now the data plate (real thin sheet steel!) says it's a Revue, (an old German optical/lens/eyeglass company I believe) however it's got a Japan label elsewhere and my guess is it's a re-badged Vixen. Am I right and would anyone like to enlighten me on what a gem or stinker it is? I gave it a nice cleaning (simple green, damp cloth) and used a hair dryer to hopefully loosen and rid it of cob webs that were inside (not a lot but I certainly could not there in there). Btw: What are the Dec and RA knobs normally called? I love the tiny bulb lamp (works!! 2xAAs) Last but not least the EPs (5,10,20mm) came with one each screw-on sun and moon filters (How cool is that!!!?) I appreciate all insights in advance! John
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