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_dslr_mirrorlesss_winners.thumb.jpg.9deb4a8db27e7485a7bb99d98667c94e.jpg

Mcrogers1

Hello All!

Recommended Posts

Hello,

 

This is my first post and I would like to thank the community for helping me tremendously already.

I just found out that my Mesu 200 is ready and I should have it in Oklahoma soon. Lucas Mesu has been great to interact with and answered numerous questions that I've had throughout the process. SiTech has been great in that area as well.

This sites posts and user experience is what led me to making the decision to get a Mesu 200. I also go over Cloudy Nights forums as well but this site seems to have a broader user base on the mount. Along with the Mesu I have an AT8RC CF and AT115EDT that will be mounted in tandem. Both scopes have FeatherTouch focusers controlled by an Optec FocusLynx dual channel controller. The STF-8300M and SX FW will be swapped back and forth depending on target size. My filters are Baader LRGB/NB  and figured I would upgrade from the CGEM DX before going with some Astrodon 3nm. Just purchased an Optec Flat Panel for automated flats as well.  I didn't know a taco from a telescope a year ago and now realize that there is always something else you would like to buy. The Mesu will be it for a while (maybe a dew control system). It's taken a year of saving then buying to put this together but I'm sure it'll keep me busy for years to come.

I'll probably be picking your brains on setup of the Mesu and be pestering anyone that uses it with ACP as this is the control software that I will use in my backyard observatory. Any advice in that regards I would like to cut and paste to the ACP forums if that is permitted.

Again thank you so much.

Mike

Clears skies and steady tracking.

 

  • Like 1

Share this post


Link to post
Share on other sites

Greetings, Mike, and welcome aboard SGL - it's nice of you to join us!

Have no fears in asking us all any astro-based questions - we love helping to find answers and sharing our collective knowledge-base.

Clear & dark skies,

Dave

Share this post


Link to post
Share on other sites

Hi Mike and welcome to SGL - The Mesu is a great mount, I'm very pleased with mine :) There's lots of helpful and knowledgeable folks on the forum, so I'm sure you'll be up and running in no time :)

Look forward to seeing you around :)

  • Like 1

Share this post


Link to post
Share on other sites

Hello Mike and a warm welcome to S G L, enjoy your new kit, and enjoy 

the community.

Good Luck and Clear Sky's.

Share this post


Link to post
Share on other sites

Hi Mike, welcome to SGL :smile:

Nice kit you have there. I wouldn't mind a Mesu myself.

Share this post


Link to post
Share on other sites

Hi Mike and welcome to SGL, nice set up you have for your AP and in addition; the forum will be at hand for all those awkward problems you may get stuck with. Enjoy the forum and your AP :) 

Share this post


Link to post
Share on other sites

Hi Mike

Welcome to the forum... You're in for a treat with the Mesu: it works like a dream. I've not had a single sub that showed any tracking problems. Mine is one of the older ServoCat / ArgoNavis units. I've had a TOA150 + C11 mounted in both tandem and piggyback configurations, and the mount coped without problems (I get much shorter damping times in piggyback mode). Currently I'm running the TOA150 with an Altair Wave 80 piggybacked. 

Quote

The Mesu will be it for a while.

Of course it will... :laugh2:

Quote

(maybe a dew control system)

And there it is!

Hope all goes well with the Mesu. Show us some pictures of your setup under Oklahoma skies when it's ready.

Nigel

 

  • Like 1

Share this post


Link to post
Share on other sites

Well after 21 days the mount is finally here. The mount arrived in good condition along with the nice counterweights Lucas Mesu made. He built a solid crate to ship in and this has a section of wood that screws in over the mount. Attached to this section is a cylinder that fits down into the counterweight shaft to prevent movement. Lucas was nice enough to throw a pier adapter for free. He's really good person to do business with.

 I have people coming in from out of town to install it in my observatory. Even though the obsv is in my backyard I had to go full remote. Being hooked up to a medical machine for 8 hrs night prevents me from going out for rain and power failures. Still have to install the MVO Controls motor panel but the obsv has power and the motor is mounted. I can say that Jim at MVO Controls is a good guy like Lucas and builds his own system as well.  

Mesu 200.jpg

  • Like 1

Share this post


Link to post
Share on other sites

I'm jealous.  I've currently have a mesu on order for two months and counting  (oops, looks like you mentioned 21 days of travel).  He is also charging me for the adapter.  Any way could measure the inside diameter of those counterweights?  I'm looking to source some counterweights from Celestron and have the center bored out to fit.  Thanks.

Edited by prostcj

Share this post


Link to post
Share on other sites

It should be ready soon. I placed my order at the end of August and it was ready on Oct 27.

The counterweight holes are 40mm.

I live in the USA and thats why shipping took longer because of customs and the Holidays. The mount was in my city for a about a week. If Lucas ships via TNT be sure to call the New York office once it gets there to get a tracking number for the subcontractor they will be using. This is faster because the subcontractor's system is quicker than what's relayed to TNT for an update.  TNT used XPO Logistics and they have a bad reputation across the country but are actually quite good here in Oklahoma City. Not trying to alarm you but you'll have to stay on top of tracking to coordinate delivery.

Lucas is great to work with and will answer any questions you have. I know he responded to about 50 of mine.

Edit: I just noticed you're in the US. Customs was only $60 so that's good news.

Hope you get your Mesu 200 soon.

Mike

Edited by Mcrogers1

Share this post


Link to post
Share on other sites

Thanks Mike,

I knew the shaft was stated as 40mm so I wasn't sure if I had the machine shop bore to 40mm and the shaft was exactly 40mm that the weights would fit.  I might just have the shaft bore to 41mm or something slightly larger so I don't have to wait on the shaft to get here.  That's hopeful news about customs.  I know when I ordered my Moravian G4 camera I didn't pay any additional customs charges.

Share this post


Link to post
Share on other sites
On 29/11/2016 at 16:57, Mcrogers1 said:

Well after 21 days the mount is finally here. The mount arrived in good condition along with the nice counterweights Lucas Mesu made. He built a solid crate to ship in and this has a section of wood that screws in over the mount. Attached to this section is a cylinder that fits down into the counterweight shaft to prevent movement. Lucas was nice enough to throw a pier adapter for free. He's really good person to do business with.

 I have people coming in from out of town to install it in my observatory. Even though the obsv is in my backyard I had to go full remote. Being hooked up to a medical machine for 8 hrs night prevents me from going out for rain and power failures. Still have to install the MVO Controls motor panel but the obsv has power and the motor is mounted. I can say that Jim at MVO Controls is a good guy like Lucas and builds his own system as well.  

Mesu 200.jpg

Looks really good! I am also in the process of a future purchase of a Mesu 200 mount. I come from a Neq6pro moded (running for a couple of years) and want to upgrade to forget about tracking issues and also being able to load it with heavier stuff.

Waiting for your first light and some more images when fully installed in your obsy :)

Share this post


Link to post
Share on other sites
On 12/6/2016 at 15:57, astrocatinfo said:

Looks really good! I am also in the process of a future purchase of a Mesu 200 mount. I come from a Neq6pro moded (running for a couple of years) and want to upgrade to forget about tracking issues and also being able to load it with heavier stuff.

Waiting for your first light and some more images when fully installed in your obsy :)

I can't wait to get going too. Like most people I have weeks of clouds after getting any new equipment.

Share this post


Link to post
Share on other sites

Slowly getting the equipment in the obsv. Now if the weather would just cooperate. I think every piece of astrogear comes with 2 weeks of free clouds. I can say the Mesu 200 is easy to balance and I might add the second counterweight when I get the camera installed. Not having to deal with clutches is really nice. Balancing is a lot easier that I thought. The mount stays in place after I power down. Can't wait to finish the set-up.
 

 

mesu 200 AT8RC 115EDT.jpg

mesu 200 AT8RC 115EDT_1.jpg

Edited by Mcrogers1
  • Like 3

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 Astroscot2
      For sale,   Mesu 200 heavy duty portable pier £220 hardy used, 50% off new price.  Could be  adapted to fit other EQ mounts.
       
      Buyer collects due to size and weight.  Glasgow area.
       
      Mark

    • By MakeItSo
      Hi Folks, 
      Thanks for reading. 
      I am upgrading my mount for my observatory. I will be doing AP primarily but to be honest,  I also enjoy some visual.  I need about 30-40kg capacity. I had my heart set on the ridiculously expensive 10 Micron 2000 (coming in a about 12k when you figure all the extras needed). Something seemed wrong about that price....!
      I now have an opportunity to get a Mesu 200 Mark II. The mounts engineering looks unquestionable and I have yet to hear anything bad said about these mounts. The price is also very attractive compared to the 10 Micron. My issue is the control. I’m going to be honest - the controller looks rudimentary (and with no screen, controlling from the computer for visual may be annoying). I have no knowledge of Sidereal technology at all. I am very close to purchasing this mount but I would like some feedback on user experience regarding the software and control of the mount. I note the new version will have the Scitech I controller but I thought (perhaps incorrectly that the older version has the II controller). I am not sure if this is significant or not. 
      Opinions and feedback greatly appreciated. 
      Simon
    • By Astroscot2
      For sale,   Mesu 200 heavy duty portable pier £220 hardy used, 50% off new price.  Easily adapted to fit other EQ mounts.
       
      Buyer collects due to size and weight.  Glasgow area.
       
      Mark

    • By angryowl
      I’ve been struggling with elongated stars for the past few months now and have tried numerous things and read through similar threads here and on other forums with no success. This is really starting to get to me as I’ve lost track of the number of clear nights wasted so far.

      The elongation direction is not consistent at all and varies over different parts of the sky.


      The kit:

      Mesu 200, Celestron RASA, 60mm StarGuider guidescope, QHY5L-II guidecam, Atik 414EX main imaging camera, Baader UFC, Baader F2 High Speed narrowband filters.


      Things tried so far:

      Tested for cable drag and recently started routing all cables coming off the scope at the back of the dovetail.
      Both RA and DEC balance is spot on. This was performed several times with a digital fishing scale and the balance points marked.
      I’ve always used SharpCap for PA but also tried several runs of PHD static and drift alignment with the same results.
      Read the entire SiTech Operations manual for the Mesu as at one point I was getting elongation mostly in Ra and though the mount may not be tracking at a correct sidereal rate. There’s a method of calculating the proper track rate and have spent a couple of imaging sessions doing this with limited success. The method involves measuring the drift of a star in Ra in an interval of 10 minutes. Then after some clever math, one can change the Ra motor ticks in the ServoConfig configuration for the mount. This worked, but only for the position in the sky where the drift was measured and as soon as the mount was pointed to another part of the sky, the issue would immediately reappear. What’s worse is that the same tracking rate would no longer give round stars on a different night in the same position in the sky it did for the night before.
      Short exposures of a minute or shorter in any position in the sky give perfectly round stars. This eliminates collimation, issues with the camera or any other optical element in the light path as I see it.
      Differential flexure between the main scope and the guide scope is a non-factor as I get elongation during unguided exposures. Tried tweaking the settings in PHD2 thinking I might be able to guide it out. Results, again, vary depending on the night and position the scope is in. Sometimes guiding would give almost acceptable stars and some improvement over unguided and other times it would simply make matters worse.
      Additionally, rotating the camera 90 degrees results in the direction of elongation being rotated as well. The camera is coupled to the front corrector plate via screw adapters which I simply can’t see flexing.
      The only time I can get round stars is with the scope pointing near the Zenith.

      I’m at a point now that the only thing making sense is flexure within the RASA or imaging train. I know the camera is tightly fixed to the corrector plate so there can’t be any play there. The only place where flexure could occur would be at the main RASA Losmandy mounting plate. The plate is screwed in to the front and back aluminium holders by four M5 screws I believe. Thought these might have loosened over time but after checking, they’re as tight as they’d go.

      Not sure how solid a RASA should be and I didn’t really test or look at this when I got the scope as there was no need, but when fully mounted, the scope can be easily rocked by applying light pressure to the top mounting plate. This is not an issue with the Mesu head as it’s simply rock solid and can’t move it at all regardless of the force applied. At this point it’s all pointing to the scope/mounting plate flexing due to gravity as the scope is not exactly light. This could explain the odd behaviour throughout different parts of the sky as the scope is flexing in different directions.

      Trying to determine if it is indeed the scope flexing, I’ve done some testing yesterday. Setup everything as usual during the day and focused on a brick wall roughly 30 meters away on a day with no wind. Mount was off and both axes were locked with the mount hooks, so mount tracking errors or movement would be eliminated this way. Started with 5 short consecutive exposures, then at 10 minute intervals another 5 exposures were taken until 40 minutes elapsed. Each set of 5 exposures were integrated in PI using an average combination with no normalisation or any pixel rejection algorithms. This was done with the scope on both the East and West side of the pier pointing at the same brick wall and with the mirror both locked and unlocked.

      Combining these integrated images into GIFs and plotting the Ra and Dec orientation clearly shows considerable drift over the course of 40 minutes. As can be seen the drift is not purely in Ra or Dec, but a combination of both.

      Mirror locked. Scope on East side of pier.

      Mirror unlocked. Scope on East side of pier.

      Mirror locked. Scope on West side of pier.

      Mirror unlocked. Scope on West side of pier.


      These next four GIFs show the result of pushing on the scope’s top mounting bar. The direction of movement when applying pressure on the scope is very similar to the direction of drift in the first two GIFs. If I’m not mistaken this would indicate that the RASA is indeed flexing/sagging due to gravity. The scope was purchased from FLO about two years ago. Would this be considered normal behaviour or am I just barking up the wrong tree here?


      Mirror locked. Scope on East side of pier. Before and after pressure applied on scope mounting bar.

      Mirror unlocked. Scope on East side of pier. Before and after pressure applied on scope mounting bar.

      Mirror locked. Scope on West side of pier. Before and after pressure applied on scope mounting bar.

      Mirror unlocked. Scope on West side of pier. Before and after pressure applied on scope mounting bar.
       
      I find it hard to believe that the image should drift this much over the course of 40 mins, but then again, I may be wrong and this isn’t out of the ordinary???

      Any help with this from the awesome and knowledgeable SGL comunity would be greatly appreciated as I’m simply out of ideas and things to try.

    • By Star101
      I am experimenting with my full colour camera and narrowband filters.
      I was hoping to get 20 or more subs on this but the clouds rolled in. 8 x 600s is all I could manage. The season is young, there will be more chances :)
×
×
  • Create New...

Important Information

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