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.

Russe

Imaging with the 130pds

Recommended Posts

Hi 130 pds owners :) i have mini guide scope 30mm 132 FL with asi 120 mini mono camera. It will be enough for guiding this little beast or i should buy somenthing bigger? Enyone trying to guide 130pds with mini guide scope?

Share this post


Link to post
Share on other sites
4 hours ago, Heizel said:

Hi 130 pds owners :) i have mini guide scope 30mm 132 FL with asi 120 mini mono camera. It will be enough for guiding this little beast or i should buy somenthing bigger? Enyone trying to guide 130pds with mini guide scope?

I had that mini guide scope in the finder shoe with an asi290mm and it wasn't good enough for me. I was averaging >1.3"/pixel in phd2. Moved to an evoguide 50 bolted onto a dovetail on the mounting rings and now much happier with my guiding at <0.8"/pixel. My imaging scale is ~0.9"/pixel, so anything higher than that results in less than stellar frames. Mounting it securely also makes an equally weighted contribution to good guiding.

HTH

Share this post


Link to post
Share on other sites

Take a look at my setup (if you're not blinded by the lights!). Camera parallel to counterweight bar, evoguide locked down on top dovetail of mounting rings.

 

Another good option would be keep to your mini guide scope on the findershoe for Sharpcap polar alignment routines and get and off-axis guider.

 

Hth

IMG_20200122_193943.jpg

  • Like 1

Share this post


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

Hi 130 pds owners :) i have mini guide scope 30mm 132 FL with asi 120 mini mono camera. It will be enough for guiding this little beast or i should buy somenthing bigger? Enyone trying to guide 130pds with mini guide scope?

Worth having a try.

I use a 50mm x 183mm guide scope which is probably a bit more reliable and on a good day gets ~ 0.60" (someone I know with a  similar setup gets 0.40" grr...)

Edited by Stub Mandrel

Share this post


Link to post
Share on other sites
6 hours ago, mAnKiNd said:

Take a look at my setup (if you're not blinded by the lights!). Camera parallel to counterweight bar, evoguide locked down on top dovetail of mounting rings.

 

Another good option would be keep to your mini guide scope on the findershoe for Sharpcap polar alignment routines and get and off-axis guider.

 

Hth

IMG_20200122_193943.jpg

Well done for coping with those lights! I use a 30mm long  'dewshield' made from camping mat lined with black flock; I bet if you used something like that you might see improved contrast.

  • Like 1

Share this post


Link to post
Share on other sites
11 minutes ago, Stub Mandrel said:

Well done for coping with those lights! I use a 30mm long  'dewshield' made from camping mat lined with black flock; I bet if you used something like that you might see improved contrast.

Thanks, I'll give that a try!

Share this post


Link to post
Share on other sites
On 06/02/2020 at 02:38, alacant said:

gs.thumb.jpg.90af40a003f7802e739dee13b9d14d76.jpg

 

Hi

2 alternatives shown here. An off axis guider with t7m or 60mm guide telescope, discontinued zwo120mm and 40mm dovetail clamp. Black shower cap optional.

HTH

IMG_20200301_200301.thumb.jpg.c5d18156a9c854eb99b9e97e463e690f.jpg

 

Thanks for sharing this tip! I got me thick black shower cap from ebay and I'd "like to believe" it's making a difference...my wife was giving me weird looks when I was opening up the parcel😂

  • Haha 3

Share this post


Link to post
Share on other sites

Thanks for reply, i order 50/190 guide scope and that is last puzzle in my setup. Waiting for clear skies! 

DSC_0110.JPG

  • Like 1

Share this post


Link to post
Share on other sites

Did some more lunar work on Monday night and attempted an HDR moon.  The diffraction and reflections weren't quite what I was expecting but actually I really like in the final image..  Still really pleased I chose the 130 PDS!

 

HDR Moon-Edit.jpg

  • Like 11
  • Thanks 1

Share this post


Link to post
Share on other sites

I have newly acquired the 130PDS and would like to try some basic AP with my Nikon D3200. I've ordered a T-ring https://www.amazon.co.uk/gp/product/B0002379UO/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Do I need anything else to connect the camera to the telescope?

Sorry if this is too much a newbie question. I thought the people on this thread would be best able to answer.

Share this post


Link to post
Share on other sites
Posted (edited)
2 hours ago, PatrickO said:

I have newly acquired the 130PDS and would like to try some basic AP with my Nikon D3200. I've ordered a T-ring https://www.amazon.co.uk/gp/product/B0002379UO/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Do I need anything else to connect the camera to the telescope?

Sorry if this is too much a newbie question. I thought the people on this thread would be best able to answer.

Yes, you will need something that will screw onto the T-ring and then go into the 2" focusser tube (I think try googling "2 inch t-ring adapter).  For me that is my coma corrector.  I also have a 2-1.25" eyepiece adapter from which the 1.25" can unscrew and be replaced by the T-Ring to do the job.  I can't remember if that came with the PDS or my 200P though (though I think the latter) so it might be that one of the accessories you already own will do the job

Edited by OllieN
Clarification

Share this post


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

Yes, you will need something that will screw onto the T-ring and then go into the 2" focusser tube (I think try googling "2 inch t-ring adapter).  For me that is my coma corrector.  I also have a 2-1.25" eyepiece adapter from which the 1.25" can unscrew and be replaced by the T-Ring to do the job.  I can't remember if that came with the PDS or my 200P though (though I think the latter) so it might be that one of the accessories you already own will do the job

If I remove the eyepiece holder there is a screw thread. Will the adapter screw straight into that?

Thanks

Share this post


Link to post
Share on other sites

Hi all

Just wondering if anyone has used a Moonlite CR2 focuser with the 130 PDS ?

I have a new camera and filter wheel that is heavier than my old DSLR, this combined with my fickle SW autofocuser tensioning means that I am experiencing what I think is focuser ‘sag’. I certainly have tilt that seems gravitational and when I put a laser collimator in the focuser tube I can wobble it so that the red dot moves around the primary mirror donut.

I’m getting nowhere trying to improve this so I wondered if investing in a premium focuser might be the answer ? I’ve read that Moonlite focusers are good but are they really solid ? Solid enough to hold a large imaging train without unwanted sag ?

These focusers cost a lot of money and I’d have to save up for quite a while to get one, but I don’t mind doing that if it going to help solve my problem.     

Share this post


Link to post
Share on other sites
Posted (edited)
12 minutes ago, Spaced Out said:

Hi all

Just wondering if anyone has used a Moonlite CR2 focuser with the 130 PDS ?

I have a new camera and filter wheel that is heavier than my old DSLR, this combined with my fickle SW autofocuser tensioning means that I am experiencing what I think is focuser ‘sag’. I certainly have tilt that seems gravitational and when I put a laser collimator in the focuser tube I can wobble it so that the red dot moves around the primary mirror donut.

I’m getting nowhere trying to improve this so I wondered if investing in a premium focuser might be the answer ? I’ve read that Moonlite focusers are good but are they really solid ? Solid enough to hold a large imaging train without unwanted sag ?

These focusers cost a lot of money and I’d have to save up for quite a while to get one, but I don’t mind doing that if it going to help solve my problem.     

Difficult choice I got to the point when I was thinking of either getting a moon light focuser or moving onto a refractor, in the end I decided it was a false economy to try putting a £300 focuser onto a £160 scope and saved for the refactor instead. The original focuser is fine for a DSLR or a OSC cooled camera, but by the time its having to hold a dedicated mono camera and a 8 position filter wheel it just cant hack it. The main issue is that you colimate with the light weight colimation tool in it and then the whole thing moves when you put the camera system on and hey presto your colimation is wrong.

Edited by Adam J
  • Like 1

Share this post


Link to post
Share on other sites
Posted (edited)
6 hours ago, Adam J said:

The main issue is that you colimate with the light weight colimation tool in it and then the whole thing moves when you put the camera system on and hey presto your colimation is wrong.

If that camera system allows for fast enough downloads, you may be able to collimate on a star with it. Or at least check collimation on a star (star test). If you then point to another star and collimation has shifted, you know it is the focuser that is to blame. Putting a £300 focuser on a £160 telescope may seem overkill, but you end up with a £460 imaging system that still may be good value for its money. That new focuser doesn't have to cost £300 either. I have the low profile SW Crayford focuser on my MN190, and it holds my ASI + efw + oag well enough. I doubt it costs as much as a Moonlite.

Btw, you should also check the primary mirror support, to make sure that doesn't move. Another possible source of shifting collimation 

Just my €0.02.

Edited by wimvb
  • Like 2

Share this post


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

If that camera system allows for fast enough downloads, you may be able to collimate on a star with it. Or at least check collimation on a star (star test). If you then point to another star and collimation has shifted, you know it is the focuser that is to blame. Putting a £300 focuser on a £160 telescope may seem overkill, but you end up with a £460 imaging system that still may be good value for its money. That new focuser doesn't have to cost £300 either. I have the low profile SW Crayford focuser on my MN190, and it holds my ASI + efw + oag well enough. I doubt it costs as much as a Moonlite.

Btw, you should also check the primary mirror support, to make sure that doesn't move. Another possible source of shifting collimation 

Just my €0.02.

The problem is that the 130PDS has a very low tube diameter and so virtually nothing fits it except for the moonlight as they made a special kit to allow it to be mounted. Most focusers available only fit tubes down to 6 inch Newtonian size. In so far as I have been able to find its the moonlight or nothing on the 130PDS. 

  • Like 2

Share this post


Link to post
Share on other sites
22 minutes ago, wimvb said:

Not sure that will work

Ok, so you also need the adapter ring. Ridiculously priced at $44 but still a lot cheaper than the moonlight.

Cheers

  • Like 1

Share this post


Link to post
Share on other sites

This is my firts test  lights with 130pds. Picture are not perfect, stars not super round and there is a coma at the edges but im very happy :). 33 min exposure taken from my red/white zone balcony-  double cluster in perseus 

gromada podwójna w perseuszu.jpg

  • Like 5

Share this post


Link to post
Share on other sites
23 hours ago, Adam J said:

Difficult choice I got to the point when I was thinking of either getting a moon light focuser or moving onto a refractor, in the end I decided it was a false economy to try putting a £300 focuser onto a £160 scope and saved for the refactor instead. The original focuser is fine for a DSLR or a OSC cooled camera, but by the time its having to hold a dedicated mono camera and a 8 position filter wheel it just cant hack it. The main issue is that you colimate with the light weight colimation tool in it and then the whole thing moves when you put the camera system on and hey presto your colimation is wrong.

Thanks for this. I think I am committed (= attached !) to the 130 PDS for now, been using it with DSLRs and learning the ropes, I’ve really enjoyed it so far. I’m just disappointed I’ve spent a big wedge on a camera upgrade only to discover the stock focuser doesn’t like the weight and my images show sag/tilt. I am using an ASI 1600 + EFW + OAG + Baader MPCC + various spacers, it all weighs 1.28 kg !

I am happy save up and buy a Moonlite if it is the right tool for eliminating this sag/tilt issue. I’d love someone to come on her and say yes I had a similar problem and yes the Moonlite solved it ! That would give me some confidence that I am thinking along the right lines. 🤔 

Share this post


Link to post
Share on other sites
On 07/03/2020 at 10:59, wimvb said:

Thank you. This looks interesting, certainly worth considering I reckon.

Share this post


Link to post
Share on other sites

Hi all

Has anyone here fitted a Baader Steeltrack/Diamond Steeltrack or a TS Optics Monorail focuser to their 130 PDS ? If so, how was it to fit and how does it perform ?

Thanks

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   2 members

  • Similar Content

    • By laks20
      Hello 
      I have a telescope -SkyWatcher Explorer-130P SupaTrak Newtonian Reflector auto Telescope  and it has a  heavy duty tracking device ( pic attached). I have had this scope for a few years and did pretty much basic with this and never understood how to use this device. I have the time now to spend with the scope during this social distancing time and I am totally unaware of how to efficiently use the tracking. I know how to move up, down, left and right. I don't think it has wifi and it looks very basic ...please can someone explain how to set this up. Pleaseeeeee can someone help .......I have searched everywhere but I can't find any material on this.
      Also , If i buy SynScan ( with wifi ) will it work with my scope? Thanks in advance xx


    • By The-MathMog
      Because of the current situation, I have, as many of you guys probably have too, spend a lot more time under the stars when possible.

      It has literally been over a year since last I was out doing some astrophotography because of work.

      So here is my second take after the long break, NGC 3344 (The Sliced Onion Galaxy).
      Initially I thought it would be a lot fainter than it was, so it was basically a shot in the dark, of just trying to get back at doing this.
      But the final image actually showed a lot more detail than I would've hoped for!
      Spring lent a lot of clear night, but those seems to be gone already. I would've hoped for a few more hours to add some more luminance data to it, as I did have to push it quite a bit.
      I am not too happy with the shape of the stars either. Guiding was not very stable through the night, even though balance and polar alignment seemed to be good. Might need to update my Celestron PEC data? 

      Any advice or feedback is very welcome! 🤩
      NGC 3344 (Sliced Onion Galaxy)
      _______________________
      Image:
      Luminance - 13x16 min
      RGB - 2x16 min each
      Flat and Dark calibrated
      Gain 111
      Offset 40
      Total Integration - 5 Hours 4 minutes  (LRGB)
      _____________________
      Gear Used:
      Skywatcher 150PDS
      Celestron AVX Mount
      ZWO ASI 183MM-Pro
      Baader 2'' Neodymium Filter
      Baader 1,25'' RGB Filters
      ZWO Mini EFW
      Explore Scientific Coma Corrector
      ToupTek Camera G-1200-KMB Mono Guider
      Orion Mini 50mm Guidescope
      ______________________
      Software:
      Sharpcap
      PHD 2
      Photoshop CS2
      Deep Sky Stacker
      Stellarium/Stellarium Scope
      Astrotortilla

    • By merlin100
      I'm tempted to go down the route of getting myself a brand new reflector...  My friend's old Meade 114/900 is a good telescope, but I want something of my own and with a bit more light gathering power.  To this end, I've been looking at a couple of different models and manufactures.  
      https://www.firstlightoptics.com/beginner-telescopes/skywatcher-explorer-130.html
      https://www.firstlightoptics.com/beginner-telescopes/skywatcher-explorer-130p.html
      https://www.firstlightoptics.com/reflectors/skywatcher-explorer-130m.html
      https://www.amazon.co.uk/Meade-Instruments-Polaris-Reflector-Telescope/dp/B01FG8JEGG
      I must admit, the Skywatcher Explorer 130M floats my boat, as it's motorised with a speed controller.
      Any thoughts or observations?🤔
    • By stevebb
      Celestron C8 XLT + extras and SkyWatcher Star Travel 80 (ST80)
      I have a Celestron C8 with XLT Starbrite coatings. Will include the full length base plate, both visual and imaging backs, scope rings, front 8" end cap and the finder scope with it. No box I'm afraid. Optics are good and clean, focal length is huge - 2300mm from memory. This lot would cost close to £1300 new and one with less spec went for £750 on fleabay recently. Might be interested in a part exchange or will let it go for £450 collection only.
      Also, I have a SkyWatcher Star Traveler 80 - good optics, used as a guide scope - just the scope itself (does not include the barlow in the photo) - now including dovetail bar and scope rings looking at around £50 for it.
      I have decided to save up for another refractor, WO, Equinox or even toward an Esprit. However, I would also consider p/ex for an Intel NUC and/or Pegasus Astro Pocket Powerbox.
      Please excuse some of the colours - I used my astro modded 6D which was in the observatory so the "nice" purple is actually black !!
      Both these are collection only.




    • By Clear Skies!
      I am going to buy Skywatcher EQ5 Pro Go-To mount. But, unfortunately, I am low on budget.
      So, does someone know where can I buy the cheapest EQ5 pro mount?
      Yesterday there was a low price for it (350 €), but they changed it.
      Thank you for your time!
×
×
  • Create New...

Important Information

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