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_celestial_motion.thumb.jpg.a9e9349c45f96ed7928eb32f1baf76ed.jpg

Recommended Posts

Hi! I am very new to SGL (just signed up a couple of mins earlier) and to astronomy as well, though I have been facinated with celestial bodies since I can remember.  I recently purchased a Celestron Powerseeker 127EQ but now I’m having troubles using it and I can’t seem to see anything through it. I also have a Celestron collimating eyepiece but I still can’t seem to make it work. Anyone here who has experience with the same scope? Would appreciate if we could chat a bit as I would be really interested in your experience and how you ultimately made it work!

Share this post


Link to post
Share on other sites

PeterCPC thanks a lot!! I was actually able to set up my 127EQ a couple of times now but when I look through it I see nothing... I was thinking maybe it’s about the telescope not being collimated so I tried using Celestron collimating eyepiece but to no success. :(

Share this post


Link to post
Share on other sites

I owned some years ago a similar scope but it was the 114 version.  I found the mount difficult to use but the optics great.

Are you by any chance trying to use the Barlow lens?  I could never see anything with the Barlow lens.  I would try initially using the lowest powered eye piece.  Point to something bright like the Moon and get it in focus.  Then if you want to increase the focus, replace the eye piece with a stronger one and re-focus.  But with this mount you will need to be quick as objects will pass out of the field of view (FOV) very quickly as the Earth rotates.  This is why the Barlow lens (doubling the magnification) makes it much more tricky.  

Once you have the Moon in focus you can move to other targets. 

HTH

Carole 

  • Thanks 1

Share this post


Link to post
Share on other sites
16 minutes ago, anachristina said:

PeterCPC thanks a lot!! I was actually able to set up my 127EQ a couple of times now but when I look through it I see nothing... I was thinking maybe it’s about the telescope not being collimated so I tried using Celestron collimating eyepiece but to no success. :(

If you can see nothing it's not the collimation, it's something else. Collimation improves the view in terms of resolution and sharpness but even an uncollimated scope will show reasonably good images of the stars, planets, the moon etc.

Perhaps you could give us more details of what you have been trying to view, the accessories you are using with the scope at the time and the results. We will then hopefully be able to diagonse the problem :icon_biggrin:

  • Thanks 1

Share this post


Link to post
Share on other sites

As John says, a bit more info needed but I am guessing that you are not focusing. Can you see something in the distance during the day - but stay well away from the Sun!!

Peter

  • Like 1
  • Thanks 1

Share this post


Link to post
Share on other sites

I can’t thank you guys enough for replying to me! Anyway here are a couple of photos I tried taking by putting the camera of my phone directly above my 20mm erecting eyepiece. That’s a fair representation of what I see when I peek through the eyepiece... when I took this I was in our living room with bright lights on, and I was trying to look outside the window...

699E4C12-13D0-4481-9DA5-75E6ECB0E9F7.jpeg

507B84F4-3B33-4A45-B290-0868B7ACD00A.jpeg

Share this post


Link to post
Share on other sites

It just looks far out of focus. Turn the focuser knobs and see if it starts to form an Image. Remember that your telescope is designed for observing the stars so it won't be able to focus on nearby objects, just those very far away. 

  • Like 2
  • Thanks 1

Share this post


Link to post
Share on other sites

If you want to do quick focusing testing which I assembled scope for the first time

1) If you have bigger room size put your telescope at the other end of the room

2) On small piece draw a 10 cm rectangle or square on plane paper write couple of lines with height not more than 5-10 mm inside circle or square

3) Stick the paper on plain wall and distance between telescope and wall should be 3 to 4 meter

4) From finder scope try to focus on circle or square and gradually try to find text you have written

This technique is useful to find whether your scope is assembled properly and can do basic focusing

  • Thanks 1

Share this post


Link to post
Share on other sites
5 hours ago, carastro said:

I owned some years ago a similar scope but it was the 114 version.  I found the mount difficult to use but the optics great.

Are you by any chance trying to use the Barlow lens?  I could never see anything with the Barlow lens.  I would try initially using the lowest powered eye piece.  Point to something bright like the Moon and get it in focus.  Then if you want to increase the focus, replace the eye piece with a stronger one and re-focus.  But with this mount you will need to be quick as objects will pass out of the field of view (FOV) very quickly as the Earth rotates.  This is why the Barlow lens (doubling the magnification) makes it much more tricky.  

Once you have the Moon in focus you can move to other targets. 

HTH

Carole 

Did you own the "PowerSeeker" 114mm reflector kit, and of the same series as that of the OP, or the "AstroMaster" 114mm?

Share this post


Link to post
Share on other sites
9 hours ago, anachristina said:

Hi! I am very new to SGL (just signed up a couple of mins earlier) and to astronomy as well, though I have been facinated with celestial bodies since I can remember.  I recently purchased a Celestron Powerseeker 127EQ but now I’m having troubles using it and I can’t seem to see anything through it. I also have a Celestron collimating eyepiece but I still can’t seem to make it work. Anyone here who has experience with the same scope? Would appreciate if we could chat a bit as I would be really interested in your experience and how you ultimately made it work!

Hello,

The Celestron "PowerSeeker" 127mm f/8 catadioptric is an economical alternative to a Celestron C5 or 5SE, a Schmidt-Cassegrain.  It's quite popular among the entry-level kits for that very reason.  I don't have one myself, not quite yet, but I will be getting one in future, and for an overhaul as I would want to get the best out it as well.

As with all reflectors, even the modified-Cassegrains(Schmidt and Maksutov), collimation, alignment of the optical system, is necessary, to be checked upon its arrival from the factory overseas, and occasionally thereafter as it's moved about and used.

The "PowerSeeker" 127mm sports a barlowing lens assembly at the end of the drawtube of the focusser, and may prove problematic when attempting to collimate the telescope...

http://www.whichtelescope.com/images/CatadioptricNewtonian2.gif

The telescope is not a conventional, traditional Newtonian, although "Newtonian" is at times included within vendor advertisements.  The telescope is, rather, a loose simulation of a rare design known as a Jones-Bird, which was developed in the U.S. back in the 1940s and '50s.  The lens assembly, as noted above, makes collimating the telescope a bit difficult for those first starting out.  It's not impossible, however.  If you intend to keep the kit, I would strongly suggest researching online the methods used to collimate one, and for sharp and pleasing images throughout its range of magnifications.  Use the phrase "Bird Jones collimation" when searching with your favourite web-browser.  There are also a few YouTube videos available on the subject.

Best of luck, and enjoy.

  • Thanks 1

Share this post


Link to post
Share on other sites
Quote

Did you own the "PowerSeeker" 114mm reflector kit

Yup that one.  No idea regarding series but the principal should be the same.

Carole 

Share this post


Link to post
Share on other sites
11 hours ago, anachristina said:

....  Anyway here are a couple of photos I tried taking by putting the camera of my phone directly above my 20mm erecting eyepiece. That’s a fair representation of what I see when I peek through the eyepiece... when I took this I was in our living room with bright lights on, and I was trying to look outside the window...

What were you trying to view through the window and how far away was it ?

 

Share this post


Link to post
Share on other sites
1 hour ago, John said:

What were you trying to view through the window and how far away was it ?

 

I was first trying to view the rooftop of the house accross us, then I also tried pointint at the sky... I’ll try adjusting the focuser again to get a better view. I was trying to adjust it last night but I still had a hard time seeing clear pics. I will try again this morning though!

Share this post


Link to post
Share on other sites
7 hours ago, carastro said:

Yup that one.  No idea regarding series but the principal should be the same.

Carole 

Yes, that's the long-focus Newtonian, a true Newtonian, and the same 114mm f/8 OTA as I have within this Meade kit...

kit4c.jpg.58147cfed6f78c332992493f4792b265.jpg

The OP's OTA however, whilst of the "PowerSeeker" series, is, as evident by now, quite different.

Incidentally, Meade did one better with that kit, as they included a sturdier EQ2-class mount.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By AstroRuz
      Skywatcher 150/1200 f8 planetary Newtonian.
      Bought this originally intending to set up a planetary rig but circumstances call for sale.
      Will come with eyepieces and a collimation eyepiece. Not used by myself and has seen very little use. Mirrors in good condition
      Collection only
      £50



    • By Viktorious
      Time for yet another cry for help when it comes to choosing diagonal. I have read the many similar threads and gathered some knowledge (too many to start linking). I have come some way in my process and now that it is coming to final decisions I would like to hear from the experts. Not many of threads I have read end with the OP returning to deliver some review/verdict of his/her final decision. While I wait for response on some thread where I asked about the result, the eagerness in me forces me to write my own thread. Perhaps some of the people asking these questions before can now answer in my thread as experts!

      I have the Nexstar Evolution 9.25 and am currently using the stock diagonal. My eyepieces are the Baader 8-24 mm zoom and the stock 40 mm Plössl. I would also like to upgrade EPs and there I'm looking at something better in 24 mm range, as well some nice low power for more FOV. I'm following threads about EPs and SCTs with great interest for this (on CN). Can say that I'm currently leaning towards the 1.25" 24 mm ES 68° and 2" 36 mm Hyperion aspheric (if going 2" route).

      I'm thinking 2 alternatives (including a budget alternative for one of them). I'm looking at Baader mainly for ClickLock (and expect good optics):
      Baader T2 Zeiss prism with a 1.25" ClickLock EP (T2 part #08) -OR- the 2" prism with 2" ClickLock (splurging that is). The budget alternative would be to get the non-Zeiss T2 prism instead for the 1.25". Worth noting that I would like to get the Celestron f/6.3 Reducer/Corrector. This would be for future purposes of delving into EAA but of course I would use it visually as well (especially if choosing the T2 route). The reasoning for my alternatives:
      Go for the 2" Zeiss prism to theoretically get the best of the best in visual terms. I would make better use of the 46 mm baffle tube opening. Theoretically possible to combine with the R/C thanks to relative short light path (although not necessarily needed with 2" EPs). Downside of going to 2" accessories would be the cost, EPs, filters etc., on top of diagonal. Would not be able to spend all these costs at once. Cheaper route with T2 prism (especially the non-Zeiss), not only diagonal but also the other accessories. Cost of the R/C would be comparable to e.g. the 36 mm aspheric and give similar power and FOV with the 24 mm ES, i.e. the 24 mm would act as both. Extra plus is the ClickLock clamp for 1.25" with built in fine focusing not involving the mirror. Downside of knowing that not all light coming out of baffle tube is used. To get the wide FOV (24 mm + R/C) I'm adding glass to the optical train (theoretically not a good thing). I'm leaning towards the T2 as it would be a cheaper diagonal and for EPs I would only need the 24 mm and then the reducer instead of a 30-40 mm, so saving the expense of one EP. Then I would already have the reducer for continuing into EAA. The questions I hope the experts here can help with:
      The old reducer vs 2" diagonal question. With R/C and the 24 mm I can get roughly the same mag and FOV as e.g. the 36 mm Hyperion (technically 38 mm vs 36 mm and 68° vs 72°). Also reading good things about the ES 68° and with R/C the EP should behave the same. Am I missing something here? The logics say that the I would lose some contrast with the R/C (not using full opening + adding elements), correct? Possibly flatter fields though (not important now, hopefully the EP threads might tell soon enough). The Zeiss vs non-Zeiss T2? Big differences? I have read a few posts on this so most to get some updated views here (have read that Baader has changed some things over the years). Using the R/C (f/6.3) with these prisms. I know f/7 is mentioned as "the limit" but also remember BillP's test where he was happy down to f/6 with the prisms (in 2014 at least). Perhaps most important: have I missed some other obvious alternative here? Maybe I have forgotten some question here but perhaps for the best as I assume those who have gotten this far are tired of reading now. Thanks for getting here though!

      Thanks,
      Viktor
    • By ssuummoonnaa
      Hi, I have recently bought the celestron AM 130 EQ. when setting up , I wrongly assembled the counter weight first rather than adjusting the lattitude knob both at the front and rear side. That made the counter weight pull towards the floor and now the lattitude adjustment knob is jammed, I cant move it counter clockwise. The pin at lattitude is showing 0 degree. What to do. Please help. 

    • By dragorom7
      Hello, i am new to this forum, i made my account here because i need help.
      So few weeks ago i ordered a USB to Serial cable to be able to Control my Telescope with my computer using stellarium.
      It arrived today.
      So i made my Star Alignment, then i plugged the cable to my Telescope and Computer, i installed the Cable driver and ASCOM Platform + ASCOM Celestron Driver.
      I started DriverConnect.exe and put the Celestron Driver i downloaded, and did the properties informations ( had to tick on "Advanced Setup" and "Show All COM Ports" ) and i put "COM8" on "COM Port", then i pressed "OK" and then "Connect"
      Result:
      Create              Creating device
      Connected           Connecting to device
      Error               System.Exception: Connect to COM1 failed, no Celestron scope detected
         to System.Dynamic.ComRuntimeHelpers.CheckThrowException(Int32 hresult, ExcepInfo& excepInfo, UInt32 argErr, String message)
         to CallSite.Target(Closure , CallSite , ComObject , Boolean )
         to ASCOM.DriverConnect.ConnectForm.btnConnect_Click(Object sender, EventArgs e) in C:\ASCOM Build\Export\ASCOM.DriverConnect\ConnectForm.cs:line 268
      Dispose             Disposing of device
      ReleaseComObject    Releasing COM instance
      ReleaseComObject    Completed release. Count: 0
      GC Collect          Starting garbage collection
      GC Collect          Completed garbage collection
       
      "Connect to COM1 failed, no Celestron scope detected"

      In Stellarium i set-up everything, the plug-in and restarted the app, then added my telescope  and i says it's "connected" but i can't find my telescope.
       
      Telescope:
      Celestron NexStar 127SLT
      The Cable i bought:
      https://www.amazon.com/Telescope-CP2102-Adapter-Control-Console/dp/B077G37VL1/
      PC Specs:
      Windows 10 Pro, GTX 970, 8GB Ram(DDR4), i7 6700 3.4Ghz
       
      Looking forward for your help, thanks in advance,
      dragorom7.
    • By CrystalFox
      Hello guys,
      I recently got into astronomy so I bought my first telescope. I've read through several articles and the recommendation for a beginner's telescope (value/price) was Celestron Astromaster 130EQ-MD. I bought this from someone who was not really using it and it is in a very good condition. Prior to actually purchasing this, I've watched countless videos on how the telescope works, what needs to be done - latitude, RA/DEC alignment, polar alignment, etc..
      After reading through all available manuals and videos, I finally brought it home from the seller (they've had it for around 5 years but it wasn't used much). After setting up the tripod, mounting the telescope and familiarising myself with all the different knobs, I pointed the mount/telescope towards north. The first thing I had to do was setting up the latitude. Since I am based in London, the latitude is around 52 degrees. Afterwards, I had to align the declination axis so the telescope can be balanced. As I understand it, you should be able to move it to any position on the axis and it should stay in that position. If the front or rear was heavier, I would either pushing or pulling the telescope after unlocking the brackets holding it together. This is where the issues began, I could balance the telescope so it doesn't move while in the horizontal position, however, when pointing it towards north, it would exclusively lean towards one direction - to the left. If the telescope was pointing to north, north-east or east, it would pull towards the west all the time. It is probably easier to show it in the video. I've spent three days trying to balance the telescope by using different methods and it just would not work. 
      I've also tried balancing the RA axis first. This could be somehow done, but the declination axis would still pull the telescope to the left.
      It is extremely frustrating as I don't know what could be causing this. Balancing the telescope should be relatively easy from what I have heard - either push it or pull it depending on where the weight is. However, I have been really struggling to get it set-up.
      I would be thankful for any suggestions and please feel free to ask any questions so I can help with finding out what is wrong.
       
      Thank you.
      VID_20190918_202940.mp4


×
×
  • Create New...

Important Information

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