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  2. RiponJas

    Hello from Sussex!

    Hello there and welcome
  3. I might be wrong but I think that scope has a spherical mirror, I'm not sure they can be collimated with a laser. They also already have a built in Barlow system hence the 1400mm focal length in, what looks from the photos, a much shorter tube I've no direct experience of this so I'm happy to be corrected Edit: I see I've been beaten to it
  4. The proper way to test your collimator is to set it in V-blocks, point it at a wall a good few metres away, and rotate it. If it is true the dot on the wall will rotate on its axis, if it is is out of true the dot will describe a circle. Suitable V-blocks can be made using a block of wood and 4 large nails: just bang in the nails at an angle to cross each other to like this: X, with one x in front at the other like a miniature saw horse. For the purposes of this test they will be plenty accurate enough. Edit: I cross posted with Peter above and didn't know that the laser wouldn't work with a Bird Jones. Could it be that the camera simply can't reach perfect focus with this scope? Is your best focus at the limit of the focuser travel or does best focus still leave you with a bit of free movement? Olly
  5. Hello and welcome to SGL. The Saxon 1400 is a type of telescope known as s Jones Bird reflector. The telescope uses a spherical primary mirror and a corrector lens built into the focuser draw tube to correct the inherent spherical aberrations of the primary and also give the telescope its 1400mm focal length. This type of telescope tends to give a sharpish image at the centre and less sharp towards the edge. The optical design also means that laser collimators do not work with it so you will need to use the traditional methods of collimating ie collimation cap or collimating using a star.
  6. Hi, I can only comment visual, but it is a good scope for the price. I tested two samples and both where very good collimated. The focuser is also sturdy enough for heavier eyepieces. Color is visible at higher magnifications (120x and above) using an artificial star but ok for the short focal length. I am still considering the scope for grab and go also. cs, Uli
  7. 5 years old ? That's cradle snatching. ....... Old is Thinkpad X41 12" Netbook, plus dock left in warm room ready to go. Lightweight magnesium frame, cost thousands when new. Runs guiding and imaging fine but way too slow for image processing, so slip the memory card out of the slot and indoors to the Desktop PC. Good to hear things are happdning at last.
  8. PeterCPC

    Hello from Sussex!

    Hello and welcome. Peter
  9. Hi, yes, I was very lucky to have the chance testing and comparing both scopes. Both are very fine instruments. cs, Uli
  10. Short shift session , set up at 10 and away about midnight as the sky grew ever brighter with the moon. I'm not a great fan of eq mounted Newts, so I set up just to view north and east . This also enabled handy ep height at the zenith . The OO has a single secondary vane , it gives fairly clean diffraction rings. I cut a cardboard aperture mask , this covered the focus tube and whole secondary vane. This gave some razor sharp views, starting with Alkalurops. The companion split obviously even at lower power . "La Superba" gave stunning colour , really worth finding (Y CNv), much improved with aperture reduction. Went through to some views in Hercules , Marsic, Eltanin,Sarin and Rasalgethi. Lifting up the aperture cardboard, over to NGC 6229, a lovely bright core on this globular cluster. A very fine view of Bode's. Some views of Canes Venatici area, NGC 4490 ("cocoon"),.NGC 4449,NGC 5005,even the streak of NGC 4631 ("whale "), M106 and M94 . Great to be out temperature about 15 degrees and sqm 19.14 mag. Clear skies ! Nick.
  11. Thanks all for the advice, some food for thought, I'll give FLO a call and see what 8" dob I can get for my budget
  12. It would help if you told us what mount you are using. Peter
  13. Hi all, Absolute newby here - my first foray into astronomy. I bought a Saxon 1400mm 6" refractor secondhand complete with a EQ mount for a bargain price and I'm keen to get it working properly for both planetary and deep space observations. I invested in a few extras such as a laser collimator and a 3x barlow. I think I have a handle on how it all works including the EQ mount. I took the scope out for a test over Easter - which just happened to coincide with a ISS transit of the full moon. Rippa, I thought, that would be great to capture on my first night of observations. The problem I have is the complete inability to focus the scope to anything like sharp enough. I have some photos I took with the scope attached: The scene with the normal camera lens for my daylight practice session A shot of a distant house with the telescope (using a Nikon D7000 on a t-mount adaptor) The same house with the barlow attached A shot of the moon- no barlow - as sharp as I could get it - certainly no way to see the silhouette of the ISS with the scope this out of focus When I was collumating the scope, I noticed a that the reflection on the primary mirror was not a single spot but rather a line ... which means that the laser on the collimator target is a line rather than a dot I confirmed that this is not a problem with the shape of the laser beam coming from the collimator by showing the shape on my hand at a distance of 14m I'm not sure if the distortion of the laser is the fault of the secondary mirror or the lens(es) in the bottom of the eyepiece mount. I'm also not sure if this distortion is what is causing the inability to focus the scope, but I suspect that both issues are symptoms of the same problem. I'd appreciate any ideas on what to do next to resolve the focus issue.
  14. Today
  15. Good to hear! Only problem I have is trying out AP in the future. The only tracking mount I have currently is a Nexstar 4/5se alt az mount which I worry would strain the motors under the unbalanced load of the scope and dslr attached. Will short exposures of say 15 seconds cause star trails and field rotation to be apparent(assuming the mount tracks correctly)?
  16. Don't hesitate so much to stand up for your rights! The guy sold you a mount with a flaw! It is your right to get a new one or be reimbursed. You do not need to show him all kinds of pictures to make your case
  17. Can I download these number of photo's, Ciaran?
  18. Glad its working Not sure about the resolution, never changed mine from default. There is something about font size in Configuration / Tools. One is for the Screen and the other the Graphics so not sure what affect changing this will have? Steve
  19. I'm new to astronomy, but i kid you not, i was viewing the moon this morning (Mon, 22/04/19 around 5am BST, Liverpool, UK) at 500x mag with my 130mm/900mm Newtonian and although there was a bit of image wobble, i could see really well! I'm expecting almost everyone to laugh at me or call me a liar but i swear it's true! I put a 3.6mm plossl on the 2x Barlow, effectively making the plossl a 1.8mm, just to see how bad the image would be, but was shocked when i actually managed to get a sharp focus ?? It's opened my eyes, literally, to what's possible when seeing, optics and collimation etc all come together perfectly! I'm assuming it would never happen with anything else as the Moon is very unique in that it's relatively huge, very very bright, and obvs silly close to earth, in astronomical terms.
  20. For deep sky observations, can you make suggestion which will be more fitted with my behavior: mobility is not a big concern as a least 11" aperture is must whereupon computerized stuff is no good choice for me.
  21. Nice work Steve. What kind of Altitude was Jove at at this early hour of the morning?
  22. Help me understand how this equatorial mount CGE pro own a price tag of 5000 usd? As a beginner; will it be a smart choice for me?
  23. I am using a SW 50ED finder guider, and a ASI Zwo 290mini with 2.9um pixels. Alan
  24. The re-do is much better, nice photo!
  25. What camera and guide scope are you using? https://openphdguiding.org/manual/?section=Trouble_shooting.htm
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