Date   

Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Jeff Snell
 

Veil Nebula processed in Photoshop.  Bortles 5-6.  Mount tracked nicely the entire time.  PHD2 total error no more than about .4 for 2 hours of shoot time.

60 Lights (ISO 3200, 120s)
20 Darks
20 Flats
20 Bias

Jeff

PMC-Eight w/Explore Stars
ES ED80mm APO
Celestron 8" Edge HD
Canon Ti-5 w/ Spencer Camera Astro-mod
Optolong L-Enhance Dual Narrowband Filter


On Sun, Aug 9, 2020 at 4:45 PM Jennifer Shelly via groups.io <drunkendogg=yahoo.com@groups.io> wrote:
Here is my North American & Pelican Nebulas from last night (08/08/2020).

NGC 7000 ~ North America & Pelican Nebulas
08/08/2020 @ AstroPorch, VA

QHY 128C @ -10C
Gain: 3200
Offset: 80

10 Lights @ 300s
5 Darks @ 300s
50 Bias @ 0s
10 Flats @ 0.68s
10 Dark Flats @ 0.68s

ES 127 FCD-100
ES 3" FF/0.7x FR
ML CFL Focuser with Hi-Res Stepper
Optolong 2' L-enHance Filter
ES PMC-8 G-11

NINA Nightly
PHD2 Guiding
PixInsight 1.8.8-5 / PCL 2.1.20


--
Sincerely,

Jennifer Shelly
AstroPorch, VA

Mounts
: ES PMC-8 G-11, ES PMC-8 EXOS-2
Scopes: ES ED127 FCD-100, ES Levy Comet Hunter, ES N208CF, QHY Mini Guide Scope, Solomark F60 Guide Scope
Cameras: QHY600M, QHY128C, QHY168C
Misc: MoonLite CFL 2.5 / High Res Stepper / V2 Mini Controller, Baader SteelTrack NT / SteelDrive II, Baader UFC, Optolong 2" L-Pro / L-eNhance, QHY CFW3-L, Baader 2” LRGBSHO CCD
Imaging Software:  NINA, APT, SharpCap Pro
Processing Software: PixInsight, Lightroom, Premiere Elements


Re: EXOS2 PMC-Eight Polar Alignment issue.

 

How do you polar align, which app (if any) do you use. 


On 3 Sep 2020, at 00:46, Jason Colbeck <jasonacolbeck@...> wrote:


Did that the other day on my neighbor's aerial,,it was way off,,,Its bob on now. Just the reticle issues Bill has ,,I have.

On Thu, 3 Sep 2020, 00:38 Michael Whitaker, <mwhitaker285@...> wrote:
Hi everyone, I think you need to check if your polar scope itself is calibrated, I know this is supposed to be done at the factory but maybe it can get knocked about in transit. I checked mine and it was miles out. If this is out you won’t be properly polar aligned even though you think you are. 
--
Michael Whitaker
Wakefield, UK. 
MOUNTS. Exos-2 PMC Eight..
SCOPE: RVO Horizon 72ed. 
CAMERA: Canon M50. 
SOFTWARE: Just iPad at moment.


--
Michael Whitaker
Wakefield, UK. 
MOUNTS. Exos-2 PMC Eight..
SCOPE: RVO Horizon 72ed. 
CAMERA: Not Applicable. 
SOFTWARE: Just iPad at moment. 


Re: EXOS2 PMC-Eight Polar Alignment issue.

Jason Colbeck
 

Did that the other day on my neighbor's aerial,,it was way off,,,Its bob on now. Just the reticle issues Bill has ,,I have.


On Thu, 3 Sep 2020, 00:38 Michael Whitaker, <mwhitaker285@...> wrote:
Hi everyone, I think you need to check if your polar scope itself is calibrated, I know this is supposed to be done at the factory but maybe it can get knocked about in transit. I checked mine and it was miles out. If this is out you won’t be properly polar aligned even though you think you are. 
--
Michael Whitaker
Wakefield, UK. 
MOUNTS. Exos-2 PMC Eight..
SCOPE: RVO Horizon 72ed. 
CAMERA: Canon M50. 
SOFTWARE: Just iPad at moment.


Re: EXOS2 PMC-Eight Polar Alignment issue.

 

Hi everyone, I think you need to check if your polar scope itself is calibrated, I know this is supposed to be done at the factory but maybe it can get knocked about in transit. I checked mine and it was miles out. If this is out you won’t be properly polar aligned even though you think you are. 
--
Michael Whitaker
Wakefield, UK. 
MOUNTS. Exos-2 PMC Eight..
SCOPE: RVO Horizon 72ed. 
CAMERA: Canon M50. 
SOFTWARE: Just iPad at moment.


Re: EXOS2 PMC-Eight Polar Alignment issue.

Jason Colbeck
 

I'm in the same position,,,not exactly sure how to aligning Polaris with the reticle markings,,I'm doing what you do with the pole finder app,,but I notice that different scopes some times have it inverted,,,so If it says for example 10 to on the app ,,try 20 to on your reticle,,I did & I was a lot closer.  Still,,I'm looking at changing it to one I'm more familiar with .This fits eq5 mounts so Hoping this fits the exos-2 


On Wed, 2 Sep 2020, 15:25 kinnawill via groups.io, <kinnawill=googlemail.com@groups.io> wrote:
Hi all new to the forums and new to stargazing. 

I do analogise if this issue has been answered before, I did try to search but cannot find any information.

So I bought the EXOS2 PMC-Eight and I've been trying to polar align for the past two nights but failing miserably, could anyone please shed some light on this for me please.

Things I've tried are setting the mount level using the inbuilt bubble level and also using another bubble level to make sure, setting the correct altitude for my location, pointing the mount North and positioning Polaris in the little circle. I've tried adjusting the RA position so the counter balance arm is pointing at the Polaris clock (I use an app to find the Polaris time) then fine adjust the mount to get Polaris in the little circle, but all this just seems to fail, I ask the mount to point to an object but every time the position is miles off. 

I'm obviously doing something terribly wrong here any help for a noob would be gratefully appreciated.

Another note, I've watched a few videos about the polar scope collimation and tested if it's correct and all is fine.

Thanks, Bill.


Re: EXOS2 PMC-Eight Polar Alignment issue.

Jerry Hubbell - Explore Scientific VP Engineering
 

On Wed, Sep 2, 2020 at 01:22 PM, Bill Kinnair wrote:
I think I might be polar aligning wrong it's all so confusing, can you confirm that Polaris has to be centred in the little circle or do I need to preform some steps before hand?
You should use a level app on your phone if you have one and a compass to independently verify that you are very close (to within a couple of degree) of the North Celestial Pole (NCP). If that is the case, then you should be within a 2 to 3 degrees of the target when slewing to the object. Close enough is good enough for this first try. Don't forget to take into account you local Magnetic Declination for the compass reading.
 
Thanks
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!


Re: Shailendra's guide issue #EXOS2

Shailendra Sharma <sshailendrasharma@...>
 

Hey all.

So balance seems to be sorted. Images on screen looked fine. And ra and dec combined error was hitting 0.45 at some points.
But the final image. Or is it just me. This is stacked and a quick stretch seems like i have roration. Can anyone confirm? Image

Image

Image

Image

Thanks
Chox

Mount: exos 2 gt pmc 8
Scopes; skywatcher 102t and svbony 50mm
Cameras; canon 600d and zwo asi 120 mc-s
Software; stellarium, NINA phd2.



From: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io> on behalf of Shailendra Sharma <sshailendrasharma@...>
Sent: Tuesday, September 1, 2020 9:31:49 PM
To: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io>
Subject: Re: [ESPMC-Eight] Shailendra's guide issue #EXOS2
 
Might be working again!!! :-) 
Image


From: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io> on behalf of Shailendra Sharma <sshailendrasharma@...>
Sent: Tuesday, 1 September 2020, 19:42
To: MAIN@ESPMC-Eight.groups.io
Subject: Re: [ESPMC-Eight] Shailendra's guide issue #EXOS2

Thanks Bob.

I have a few things to try. I have it balanced perfectly at the mo. Which is basically emulating how I had it before. Was very very slighly east heavy. Practically unnoticeable. And very slightly camera heavy. So when on the east it stays put. And on the west it stays put. 

I'm using tonight to test out the options. If not goodbye dew heaters and hello hairdryer! Hahaha

Thanks for the suggestions. It does make more sense now :-) 

Cheers
Chox 


From: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io> on behalf of Robert Hoskin <devonshire@...>
Sent: Tuesday, September 1, 2020 5:59:41 PM
To: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io>
Subject: Re: [ESPMC-Eight] Shailendra's guide issue #EXOS2
 

[Edited Message Follows]
[Reason: Re-worded for clarity, replaced "Balance once at the target" with "Bias East-heavy..."]

Shailendra,
 
One thing at a time...  :-))
 
Camera-heavy, you can do indoors, with the mount parked.   Yes, it will balance off-center, thanks to that heavy DEC motor hanging off the side, just do the best you can.  That part is what it is.
 
As to east-heavy, just think about what I wrote and try it.  And if the east side becomes the west side, that would be from a meridian flip, and yes, you'd need to re-balance at that point. 
 
Bias East-heavy, when at the target?  Sure - it's a general method, independent of knowing your target's location in advance or how you're using the mount. 
 
I generally shoot the eastern sky, as the view is better and less light-polluted, so I'm usually calibrating PHD2 and imaging on the same side of the meridian.  My sequence goes something like this:
  • Check for even RA balance (DEC is already camera-heavy - that doesn't change)
  • Do camera checks, PA, heaters, etc.
  • Slew to my PHD2 calibration target.
  • Adjust weight balance
  • Calibrate PHD2
  • Slew to my imaging target
  • Plate-solve to center
  • Start guiding
  • Start imaging
So the weight adjustment when near the target doesn't mess up sync or imaging.  I haven't touched the locks, and the pointing to the target has not yet been refined and sync'd.
 
 
On Tue, Sep 1, 2020, at 12:16, Shailendra Sharma wrote:
Thanks Bob.
 
I'll try that but it sort of goes against all of the vids I've seen. They all say;
 
Stand behind mount. Turn ra axis 90 deg. Release dec axis balance dec so its camera heavy. Done.
 
Ra axis move so scope is on the east and make sure its scope heavy.
What it diesnt tell you that if when the east side becomes the west side. Then what?
Should it stay put? Or should it now be west heavy.
So are you saying you should balance once at the target? Won't that knock the mount out of sync? The suggestion seems to be that once your connected and starting your sequence to image you dont touch the mount?
 
Thanks again :-)
 

From: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io> on behalf of Robert Hoskin <devonshire@...>
Sent: Tuesday, September 1, 2020 5:03:07 PM
To: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io>
Subject: Re: [ESPMC-Eight] Shailendra's guide issue #EXOS2
 
Shailendra,
 
The east-heavy thing can easily become confusing, until you "become the RA axis".   :-)) 
Then , it's easy.   
Read the section, but here's the gist of it:
 
<<
Balancing East-heavy is easy. Begin by balancing your mount evenly. Slew to your target. Then, simply stand in front of your mount’s RA axis, with your back to North, and your face to south. Make sure that the things on the left of the RA axis are heavier than the things on the right. That’s all there is to it. If the weights are on the left, move them down the weight bar by an inch or two. If they’re on the right, move them up.
Done.>>
 
 
 
On Tue, Sep 1, 2020, at 11:57, Shailendra Sharma wrote:
Hey Bob,
 
Have a look at my video if you get a chance. So if I'm east heavy. When the scope is on the west should it be west heavy? Or should it stay where I have manually moved it too. East heavy last night killed the tracking. It was a little windy so I did weigh the tripod down with the extra weight. And seemed stable enough. But the tracking has never had issues with my ra. Normally dec! Hahaha
 
Cheers
Chox
 

From: Shailendra Sharma <SShailendrasharma@...>
Sent: Tuesday, September 1, 2020 4:38:11 PM
To: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io>
Subject: Re: [ESPMC-Eight] Shailendra's guide issue #EXOS2
 
Thanks Bob. Yes first test of dew heaters so wnsyed it isolated just in case. The scope is a 102t skywatcher not heavy 3kg I think.
 
Pic attached of whats on it.Image
 I'll read the balance part in your doc after work
 
Cheers
Chox 
 

From: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io> on behalf of Robert Hoskin <devonshire@...>
Sent: Tuesday, September 1, 2020 4:01:39 PM
To: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io>
Subject: Re: [ESPMC-Eight] Shailendra's guide issue #EXOS2
 
Argh!  So no voltage drop, you've got it all isolated..  
 
Section 4 of my tuning doc covers balance.  Generally not hard, but what's your scope?    
 
The other thing you might want to look for is cables doing things they ought not...
 
 
On Tue, Sep 1, 2020, at 10:48, Shailendra Sharma wrote:
Thanks Bob!
 
Mount is powered by mains. Dew heaters separately on a skywatcher 17ah power pack. Laptop separately mains powered. With cameras attached to the laptop.
 
I saw that Scott had covered it on an episode of the explore scientific broadcast just cannot find the episode. Only reason is its making it a bit difficult to check ra balance for east bias. As it sticks from about 11 o clock to anything depending really. Before prob wasn't an issue as I must have been on the cusp. And now I need to check the east bias due to the added weight.
 
I have played with it today in between meetings. And I have it a bit better. But just need to test it now. For the dec, if it is going to sway one way or another is it better to go east or west?
 
At the moment.the dec If moved east it wants to go west If wes tit stays west.
 
If the ra is east heavy when i move to the west should it balance or still be scope heavy? It was scope heavy. I have it so it now balances.
 
If not..goodbye dew heaters! Hahaha
 
Thanks again Bob :-)
 

From: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io> on behalf of Robert Hoskin <devonshire@...>
Sent: Tuesday, September 1, 2020 3:26:56 PM
To: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io>
Subject: [ESPMC-Eight] Shailendra's guide issue #EXOS2
 
Shailendra,
 
New topics should go in new threads!  Easy to do if you want to branch off an existing one, from email - just change the subject line, like I did.  :-)
 
Re: your guiding going bad after adding dew heaters...  How are you powering your mount?  Off the mains, or battery?  And if battery, what kind?   Thinking voltage drop may be messing you up...
 
Re: Lock (aka clutch) adjustment.  Not that I know of, but the EXOS2 is a descendant of the LXD75, and the stardeck observatory pages cover that, although it's a bit confusing that he jumps from lock adjustment to worm adjustment, so parse that section carefully.  :-)
 
Link below.  Just FYI, while the exploded diagrams you'll find on that page are certainly close to of our mount internals, they are not correct where bearings and related spacers are concerned. 
 
You can see the lock components on the diagrams.  Pretty simple - lever and threaded rod, presses a little button of some hard metal against the side of the ring gear.  This creates a mechanical link between the outer shell of the mount, that your scope attaches to, and the ring gear, which is permanently engaged with the worm and motors.  Lock off, no engagement, lock on, engagement. 
 
 
- Bob
 
On Tue, Sep 1, 2020, at 04:26, Shailendra Sharma wrote:
Morning guys,
 
is there a way to check tracking during the day? I added a few dew heaters and knocked my guiding from 0.70 to 5.45 and had lots if issues last night. So will rebalanced and try again. Also I need to adjust the ra lock. Do we have a vid or docs?
 
Thanks
Chox
 

From: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io> on behalf of Jerry Hubbell - Explore Scientific VP Engineering <jrh@...>
Sent: Monday, August 31, 2020 11:41:34 PM
To: MAIN@ESPMC-Eight.groups.io <MAIN@ESPMC-Eight.groups.io>
Subject: Re: [ESPMC-Eight] Moving the EXOS2 tuning notes? #EXOS2
 
On Mon, Aug 31, 2020 at 05:21 PM, Robert Hoskin wrote:
 
Thoughts?  And are you ok for storage budget if I do that?  

 

I think that moving the file to the Main files is fine. It would be great if new users would read and heed the sticky Main forum messages, but you can't force it.
I say go for it.

 

 

Thanks
 
--
Jerry Hubbell
Vice President of Engineering
Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!

 

 
 
 
--
 
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2 290M
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64
 
 
 
--
 
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2 290M
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64
 
 
Attachments:
  • processed.jpeg
 
 
--
 
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2 290M
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64
 

--
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2 290M
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64


Re: Iexios-100 and getting it to point to the target

MikoSkye
 

That does make sense. I suppose in my naivety, I was looking at the POTH controls as a way of slewing the mount fairy easily towards the target without me having to release the clutches and then tighten them again. Alas, using the NESW just ended up putting the mount at an odd angle, even if I increased the rate. To my untrained eye it felt like I had no control over where the mount was pointing or where I was slewing, regardless of what directional button I pressed.

So for me (and I am sure others), this is helpful. I will now use the POTH to do fine adjustments and CdC to find a target that is away from Polaris. At least I hope I will!! 
--
Hardware: IExios 100 PMC 8 mount / ZWO ASI 120mini guiding camera / Orion 30mm guide scope / Canon 5D4 + EF lenses / Bresser 100w battery pack / Windows 10 laptop  

Software: PHD2, Sharpcap Pro, ASCOM, Cart Du Ciel.


Re: EXOS2 PMC-Eight Polar Alignment issue.

 

Thanks for the reply Jerry.

Yes I am using the EX0S-2 PMC-Eight mount.

I can confirm everything is setup correctly regarding the Longitude/Latitude, Time, and Time Zone.
I am also using the mains power plug that come supplied with the mount. The home position is set correctly and the motors sound fine and the mount is level.

I think I might be polar aligning wrong it's all so confusing, can you confirm that Polaris has to be centred in the little circle or do I need to preform some steps before hand?


Re: PHD2 Pulseguiding failure #pmc-eight #ASCOM #EXOS2

Jerry Hubbell - Explore Scientific VP Engineering
 

On Wed, Sep 2, 2020 at 12:25 PM, Brian Murphy wrote:
On another note keep up the good work on the Youtube ES sessions! We all appreciate the information that you all share.
Hi Brian,

Thanks for your support, I hope we can keep bringing good information to everyone via the broadcasts. Typically, I use the forum for the source of topic ideas, but if anyone has something specific they want to ask please post it here on the forum or tune in and ask it live during the broadcast. 

Thanks
 
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!


Re: EXOS2 PMC-Eight Polar Alignment issue.

Jerry Hubbell - Explore Scientific VP Engineering
 

On Wed, Sep 2, 2020 at 10:25 AM, Bill Kinnair wrote:
I'm obviously doing something terribly wrong here any help for a noob would be gratefully appreciated.

HI Bill,

I am sorry you are having issues with getting and verifying a good polar alignment.  First, what mount are you using? Is it an iEXOS 200 or EXOS 2/G11 PMC-Eight?  Based on your description using the polar finder, it sounds like you have the EXOS 2 PMC-Eight mount. Typically if you are confident that you have a good physical alignment then the only issues that can cause a large pointing error are the location and time settings, or a physical problem with the mount such as a gear binding issue or perhaps a power supply issue. 

Based on that, I would suggest that you verify the following (assuming a verified good "physical" polar alignment using a compass and level and the polar scope as needed)

1. Power supply voltage is => 12Vdc
2. Longitude, Latitude, Time, and Time Zone are correct for your location
3. The mount is placed in the Home position according to the index pointers on each axis.
4. The mount is balanced (slight imbalances are okay)
5. The gear mesh is good based on no noticeable excessive motor/drive noise indicative of motor skipping steps.

If you have these things, then DO NOT DO a virtual 2-star or 3-star alignment. Slew to an object and it should be within a degree or so of the target. 
If this is not the case, then I am not sure what else it could be.

Give that a try and let us know.

Thanks.
 
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!


Re: PHD2 Pulseguiding failure #pmc-eight #ASCOM #EXOS2

Brian Murphy <murfkcco@...>
 

Jerry, I have just been working through the ASCOM side of PHD 2.  I tried the ST4 Cable as a control just to see what would happen and got a Error along the lines of "Not enough movement" on the east and west steps.  Once I get my hands on the serial cable I will get back to you on if that resolves the errors.  Thank you for your response. 

On another note keep up the good work on the Youtube ES sessions! We all appreciate the information that you all share.

Brian Murphy


Re: PHD2 Pulseguiding failure #pmc-eight #ASCOM #EXOS2

Brian Murphy <murfkcco@...>
 
Edited

I am doing it as a wireless connection.  I saw the tip for the serial cable on another post here and have ordered one just to add another tool to the tool belt. 

Thanks a ton for the information I will report back ASAP if this resolves the issue,


Re: PHD2 Pulseguiding failure #pmc-eight #ASCOM #EXOS2

Jerry Hubbell - Explore Scientific VP Engineering
 

On Tue, Sep 1, 2020 at 04:04 PM, Brian Murphy wrote:
I decided to give Autoguiding a try this week in order to get some longer exposure times.  After some woes in figuring out the ASCOM Device hub I was able to get mount, camera and planetarium software running together.  When I attempt to start a calibration with PHD2 I get the error "Pulse guide command to mount has failed" during the west and east step phases. Occasionally it will make it to the North and South steps before the same error occurs. 
Hi Brian,  sorry you are having this issue. In PHD2 are you configuring the program to use the ST4 cable and selecting "On camera" or are you selecting "ASCOM driver", not using the ST4 cable, and using PulseGuide? If you are using the ST4 cable connected between the PMC-Eight and the camera, then you may be running into an issue with the ST4 port calibration which we see from time to time with different cameras.  I would suggest not using the ST4 cable and "On camera" and instead use the ASCOM connection to control the mount. This will eliminate an extra cable and provide a more reliable guiding signal. Also, if you are going to be autoguiding, I would second the previous advise to use the system in wired, serial mode versus wireless mode as it is also more reliable.
 
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!


Re: Wired connection to PMC8

Jerry Hubbell - Explore Scientific VP Engineering
 

On Wed, Sep 2, 2020 at 06:57 AM, alandebrut wrote:
Hello,

I looked through the threads and couldn't find the answer to this question, nor in the PMC8 manual
What is the best way to wire the PMC8 to a laptop, EQMOD cable or serial? My dealer didn't know!
I want to use EQmod and PHD2 going forward, with Sharpcap and possibly APT

I feel more comfortable using wired than wifi.

Also, from what I can understand the PMC8 uses plus guiding, but I am sure I read somewhere this is not recommended anymore?

Many thanks
Alan
To expound on what was said previously, EQMOD is the ASCOM driver for SYNTA mounts, typically the Orion Atlas, SkyWatcher EQ6 and similar mounts in the same family. The PMC-Eight has it's own ASCOM driver available on our website under the PMC-Eight Software and Downloads page. The iEXOS 100 mount has the USB to Serial FTDI chip internal on the circuit board assembly so all that is required is a basic USB Type A to mini-USB cable. The EXOS 2 and G11 PMC-Eight mounts serial interface connector is the standard DB9 so it requires a USB to Serial DB9 adapter cable using the FTDI chipset which is the most reliable chipset available. 

You will need to use the PMC-Eight Configuration Manager to switch the system from the factory default WiFi communications mode to Serial communications mode prior to using your system wired with your cable. Even though the PMC-Eight has the legacy ST4 port available for autoguiding with your camera and PHD2, I always suggest that it is better to use the ASCOM PulseGuide function which is more reliable as it eliminates the ST4 cable in your setup, plus it provides some other benefits that PHD2 takes advantage of. The ST4 port is not really recommended anymore, not PulseGuide which is the preferred method.
 
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!


Re: Iexios-100 and getting it to point to the target

Jerry Hubbell - Explore Scientific VP Engineering
 
Edited

On Wed, Aug 26, 2020 at 06:22 AM, Lloyd Simons wrote:
I wouldn't use the POTH buttons to move the mount. The way they work is not intuitive,
Not to derail this thread into another topic, my intent is to clarify Lloyd's statement for those not familiar with how the POTH buttons move the mount.

I made this drawing to help people understand what is going on.

Star 1 and Star 2 are the same angular distance apart in the sky when you look at them (blue line). The problem is that in a polar coordinate system which the Celestial Coordinate system is, to move the mount between the two stars is very different in RA and DEC near the North Celestial Pole (NCP) - DEC >70-deg compared to near DEC 0-deg. As shown in the drawing the RA axis only has to move perhaps a few degrees (1 hour in RA = 15-deg), nearly the same as in DEC (15-deg) when at DEC = 0-deg. In contrast, when near the NCP, the RA axis has to move several hours in RA to get the equivalent angular position change as when near 0-deg DEC.

If you are very close to the NCP, perhaps within 10-deg, you may not be able to move the RA axis enough at all to get to the star. The worst case is of course when you are at the NCP you can rotate the mount all you want in RA and the angular position will not change at all, all you see is rotation. The key point when using the POTH is to understand that the POTH is designed for doing small corrections when centering objects. It will move the mount a specific distance in RA and DEC in the Celestial Coordinate System. That is all it can do since the motors drive the mount in this system, not in a cartesian coordinate system

It is important to get your head wrapped around this concept when dealing with polar coordinate systems. Once you understand this, things become much easier when moving the mount. I hope this helps everyone learn this important concept about the POTH and how the mount moves when using the buttons.

 
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!


Re: EXOS2 PMC-Eight Polar Alignment issue.

 

Thanks for the reply, Yes I'm using ExplorreStars everything is setup correctly after following the tutorial on youtube.


Re: EXOS2 PMC-Eight Polar Alignment issue.

Lloyd Simons
 

Bill,

Are you using ExploreStars? Make sure your time and location are correct.
--
Lloyd Simons
Mattawan, MI
Telescopes: Astrotech AT72ED II, Orion 8" Dobsonian, Tectron 15" Dobsonian, Celestron Super Polaris C8
Imaging Camera: Canon T3i
Guide Camera: QHY5L-IIM on a 60mm F4 Guidescope
Mounts: iExos-100 PMC-8, Vixen Super Polaris
Mount Control: KODLIX gn41 mini PC, Explorestars on a Lenovo Tab 2 A10-70F Android 6.0
Software: N.I.N.A. for imaging, PHD2 for guiding, Sharpcap for PA, Cartes du Ciel, PixInsight


EXOS2 PMC-Eight Polar Alignment issue.

 

Hi all new to the forums and new to stargazing. 

I do analogise if this issue has been answered before, I did try to search but cannot find any information.

So I bought the EXOS2 PMC-Eight and I've been trying to polar align for the past two nights but failing miserably, could anyone please shed some light on this for me please.

Things I've tried are setting the mount level using the inbuilt bubble level and also using another bubble level to make sure, setting the correct altitude for my location, pointing the mount North and positioning Polaris in the little circle. I've tried adjusting the RA position so the counter balance arm is pointing at the Polaris clock (I use an app to find the Polaris time) then fine adjust the mount to get Polaris in the little circle, but all this just seems to fail, I ask the mount to point to an object but every time the position is miles off. 

I'm obviously doing something terribly wrong here any help for a noob would be gratefully appreciated.

Another note, I've watched a few videos about the polar scope collimation and tested if it's correct and all is fine.

Thanks, Bill.


Re: PHD2 Pulseguiding failure #pmc-eight #ASCOM #EXOS2

 

Brian,

How are you connecting to your PMC8 unit?    Wired, or wireless?   And if wired, a USB->Serial cable with the FTDI chip?

- Bob
 
--
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2 290M
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64