Date   

Re: #EXOS2 My RA on my mount is wiggling, Causing Star Trailing!!! #EXOS2

nickerson.joseph@...
 

Are you saying it's suppose to wiggle like that? 


Re: #EXOS2 My RA on my mount is wiggling, Causing Star Trailing!!! #EXOS2

NewAP
 

I have similar issue with IEXOS-100, there might be several reasons I suspect:
First is the periodic error due to the imperfection of the gears, it causes the rocking along RA.
secondly seems the tracking rate is slightly off but I guess it will take some effort to change it, but you can try tweak it a bit by setting the custom sidereal rate, +-2 to start with.

Best,
Yi 
--
Canon 6D, Sigma 150-600mm, IEXOS-100


IEXOS-100 can't get round stars due to RA erros? #iEXOS-100

NewAP
 

Have IEXOS-100 for over a year, used for unguided imaging, and noticed that I could not get round stars, it was always elongated along RA.
Thought moving to guided imaging will resolve this issue so did the move recently, still can't fix egg shaped stars.

Imaged with Canon 6D at 300mm, 600mm over 30 sec, 60 sec. Tried to tweak the pulse rate from 0.4 to 0.5 and 0.6 without any major improvements.
Still get elongated stars, for bright stars the trails are so obvious.

I removed the motor covers and noticed that the DEC pulley seems to be more smooth than the RA pulley, which is definitely not acentric so well, but not sure if that could be the cause.

PHD2 reported RA peak-peak 30-50 seems to be OK. RA RMS errors seem to be reasonable as well (1.x arcsec/s), but the drift limited exposure was very low in the 0.3-0.7 second range.
PHD2 logs have been uploaded, so are some sample pictures.

Please help and suggest. Quite confused and thought maybe I am unlucky the unit has problems with RA tracking?

NY
--
Canon 6D, Sigma 150-600mm, IEXOS-100


#EXOS2 My RA on my mount is wiggling, Causing Star Trailing!!! #EXOS2

nickerson.joseph@...
 
Edited

HELP!!! I have been using the EXOS2-GT w/PMC8 for about 6 months and have been mostly happy with the purchase. Most my frustrations stemming from just being new to the hobby. I use my mount for astrophotography only and noticed over the last month I was losing more and more subs to the same issue of  very slight star trail. My last few sessions though I am now losing over 50% of my subs regardless of exposure time. My polar alignment is spot on using shape cap, my guiding stays under .20 on RA and DEC. Today as I was making sure all my equipment was secure when I noticed that there is "play" on the mounts RA, no matter how much a crank the clutch, I still get movement, with or without power on the mount, Parked or Un-parked. My DEC is solid as a rock. I can only assume this is my issue. I have been calling Explore Scientific all day today but no one is answering. I am not sure where to go from here...Any assistance would be greatly appreciated. I have attached a sub of the star trail and a video of the play. Sincerely.....


Re: Connection Issue #EXOS2 #pmc-eight

Al Parise
 

lol

yea the 12v power brick that came with the mount
somewhere on the line closer to the brick is a weak spot
when i fiddle with it the power flashes on/off
so the unit must not have been getting full power, thus the 2 lights flashing

I found another power brick, off a portable hd case,  with same output and pin size
and it works, full power

going to order a new cord


Re: Connection Issue #EXOS2 #pmc-eight

Wes Mcdonald
 

You know al I almost asked if you had the pmc8 turned on😂 but didn’t.  It’s an old joke about computer phone support. “ well sir before we begin let me just ask you if you have plugged in and turned on your computer”🤬😅

Anyhow that’s great.  What power cord are you taking about, the 12v power line brick or another thing you made?

Wes

--
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired


Re: Connection Issue #EXOS2 #pmc-eight

Al Parise
 

Hi Wes
problem solved
was the power cord
found another cord and all works now
5       Received: ESGp0000000!
4       ComManager:     Serial Returned: ESGp0000000!
3       ComManager:     Start Sending Serial Message: ESGp0!
2       Sending via Serial: ESGp0!

the lights that were flashing are now solid
plus now 2 different lights doing their thing

so if these lights are flashing and no other lights (serial on left)
led 6 power red - top left
and led 2 wifi green - mid bottom
then its the power cord
should add this to the trouble shooter or knowledge base

Wes thanks for your time
really appreciated

regards
Al


Re: Connection Issue #EXOS2 #pmc-eight

Al Parise
 

Hi Wes
I may have found the issue
I been moving the box around and took it to my desktop pc
installed all software and drivers and it would not connect
moved it back to my laptop and noticed while plugging in power
there was no power to box
ran cord thru my fingers then came to  a spot in the cord  then the box lit up
lol
yes positive, no pmc8 wifi network
with serial port on left
these lights on the pmc8 box are flashing, no other lights doing anything
led 6 power red - top left
and led 2 wifi green - mid bottom

looking for another cord
maybe not enough power thru cord, so lights flashing ?
what a pita
will advise
regards


Re: Connection Issue #EXOS2 #pmc-eight

Wes Mcdonald
 

Al:

The PMC8 network needs to appear in the WiFi network connections...are you sure it is not?  This does not sound good.

AS you view PMC8 front panel with serial port on left, tell me again what flights you see and what they are doing?

Wes.


--
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired


Re: Connection Issue #EXOS2 #pmc-eight

Al Parise
 

Hi Wes
ok
win device manager - usb serial com port 7, driver looks good, no complaints
got new ftdi cable installed, all good, removed old/hidden coms

Ascom Driver - serial, port 7

CM -  connection - exos2, com port it shows port 7, pressing find  it says -
does not automatically find the com port to pmc8, make sure it is connected
pressing the do it button says it appears scope is not connected

no pmc8 wifi network appears in network, so stuck in serial

CM-Advanced - serial on, sending ESGV! , with extensive debug  returns this
77       Received: 
76       ComManager:     Serial Returned: 
75       ComManager:     Start Sending Serial Message: ESGp0!
74       Sending via Serial: ESGp0!

parallax - port 7, it sees the port, baud 115200, enable - seems to connect to port
not sure I know what im doing with this but entering in command ESGp0! or ESGv! returns no result

regards
 


Re: Connection Issue #EXOS2 #pmc-eight

Al Parise
 

Wes
I have read a lot of your posts here and have learned a lot from them

thank you so much for the quick reply

will go thru your suggestions and report back
regards


Re: Connection Issue #EXOS2 #pmc-eight

Wes Mcdonald
 

Al

Comm port denied means there is another app attached to the comm port.  Ascom cannot get to it.  Sounds like a windows issue

Why don’t you start from scratch and using the configuration manager give us a step by step you are trying to use and tell us where you break


Also before you do any of that, go in the windows device manager with the usb to serial plugged into the computer and see what it says about the usb connection.  It will give you a comm port number under the usb devices I think.   Look around for it if it isn’t there.  If the computer is seeing it you will find it.  And you can check the driver for the device.  Ain’t much help but it’s something

Also, see can you do a refresh of comm ports using the refresh button in the cm.   See if the port shows up.  Also connect the serial up to the pmc8, go to the advanced tab of the cm.  Assuming you have the cm set to the comm port on which the pmc8 is.  Then turn on the radio button for serial and try sending an ESGv!.    Sometimes even when the cm cannot find it connect to the mount it can do that.

If that fails, load the parallax serial terminal from parallax web site.  Open it and see if you Can connect to the pmc8.  If it sees the comm port.  Make sure you set the baud rate to 115200.   Then you can manually enter the ESGv! Command and should see a reply in the terminal window.  This is a direct connection method and obviates a lot of stuff in the Cm that sometimes causes it not to work.

Also you can try using the cm and the advanced tab to send ESGv in tcp and udp if the Windows PC has joined the pmc8 network.  Maybe you got switched over to WiFi by accident

Need more input from you to help really 


Wes 

--
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired


Connection Issue #EXOS2 #pmc-eight

Al Parise
 

Hey Gang

I am having a connection issue with exos2-pmc8
been able to fix other issues with info from this board
but no luck this time

All year I have had no connecting issues
win10 laptop - ascom-stellarium-apt-phd2, using prolific usb-serial connection

last working connection was last week 12/29, got a few hours in
then setup and tried on new years eve, 12/31, and nothing, would not connect
nothing changed in setup or hw/sw from night to night
been trying to trouble shoot this now since then with no luck

went thru the usual settings/drivers/device manger/bios
reinstalled all the sw/drivers
rummaged thru the message board here for ideas
bot new usb-serial cable with ftdi chip, no go

the ascom device hub does give me an error when trying to connect
- access to com port denied - nothing on google search really pops out as a fix

the pmc8 box led 6 power, and led 2 wifi mod power are both flashing
not sure if that means something but I'm all out of ideas

regards


Re: PMC-Eight Customer and Dealer Training #pmc-eight

Timothy Myers
 

Jerry, thanks for doing this, I have devoured everything in what I downloaded and am now working my way through your "Scientific Astrophotography"  book I received for Christmas. 

As much as I love the images I am getting I really love understanding the math behind what I am doing.
--
Tim Myers

Telescopes:           Celestron 4SE, Celestron 8SE, SkyWatcher 100ED Pro
Mounts:                 4-5 SE, 6-8SE, EXOS-2GT with PMC-Eight
Cameras:               ASI1600MC Imaging Camera, Cooled, ASI120 Guide Camera
Focuser:               ZWO EAF
Scope Mini PC:    Topton Pentium
Laptop:                 Lenovo
Software:             CDC, SharpCap Pro, NINA, PHD2


Re: iEXOS 100 - lost communication #iEXOS-100 #ConfigManager #ExploreStars

Wes Mcdonald
 

Great john.  Glad to hear it!

Wes

--
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired


Re: iEXOS 100 - lost communication #iEXOS-100 #ConfigManager #ExploreStars

 

It is now working!
Thank you all for your assistance and time, I really appreciate it.

As it turns out the issue was the USB cable. It was working, hence my loss off communication with the mount.
I bought a new cable and plugged it in, followed Wes's steps again and I am now communicating with my mount.

What an awesome here, thank you! 


locked Re: Connecting EXOS 2 PMC 8 to ASIair Pro #EXOS2 #TECHNICAL

Dino Monaco
 

Steve

It was confusing at first for me as well. But the tech help at Explore Scientific pointed me in the right direction.
True you will need a DB9-USB w the FTDI chip set. I found them on Amazon. Theyre  Cheap.
Then we need to download the programs from their website.
If you go to the group.io and do a search for Asiar & PMC8 someone wrote a beautiful procedure.
I’m still waiting for my exes 2 because it’s backordered.
But for now contact tech support at Explorescientific.
Try emailing Tyler@explorescientific. He will help you.
 Dino

On Jan 4, 2021, at 12:13 PM, Dino Monaco <dinomonaco@...> wrote:

Hey Tyler.

Pleas send me a procedure for linking the PMC8 & asiair .
This would make my life a whole lot easier.

Thanks.com

Dino


On Jan 4, 2021, at 11:13 AM, Tyler Bowman - Explore Scientific Customer Service <Tbowman@...> wrote:

It's super simple and i can walk you through it no biggie. send me a email at Tyler@...

--
Dino Monaco


locked Re: Connecting EXOS 2 PMC 8 to ASIair Pro #EXOS2 #TECHNICAL

Dino Monaco
 

Hey Tyler.

Pleas send me a procedure for linking the PMC8 & asiair .
This would make my life a whole lot easier.

Thanks

Dino


On Jan 4, 2021, at 11:13 AM, Tyler Bowman - Explore Scientific Customer Service <Tbowman@...> wrote:

It's super simple and i can walk you through it no biggie. send me a email at Tyler@...

--
Dino Monaco


locked Re: Connecting EXOS 2 PMC 8 to ASIair Pro #EXOS2 #TECHNICAL

Tyler Bowman - Explore Scientific Customer Service <Tbowman@...>
 

It's super simple and i can walk you through it no biggie. send me a email at Tyler@...


locked Connecting EXOS 2 PMC 8 to ASIair Pro #EXOS2 #TECHNICAL

Steven Paley <stevenpaley@...>
 

Hi,
 
I emailed Bresser with this question earlier but they didn't know the answer & directed to ask here. 
Although I should have checked before I bought it      (I can still get a refund as I only have it on pre order) I was looking at ways to control my whole Astrophotography set up with my ES EXOS II PMC 8 mount and the ASIair Pro control box seemed perfect. 
But when I looked into how they both connect to each other & after countless searches on line all I could find was that I'd need a cable with an FTDI Chipset but that the chipset would need to be reprogrammed.
 
Unfortunately I'm not particularly technically minded & havnt a clue what an FTDI chipset is never mind how to reprogramme one.
I'd be very grateful if someone has any info on this or can at least point me in the right direction.
Better still would be an idiots guide to connecting them both 😬
 
Regards
 
Steve
 
 

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