Date   

Re: Leaving counterweights on empty mount

thefamily90 Phillips
 

I have left AP mounts out under Telegizmos 365 covers for months with no ill effects.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Joseph Beyer <jcbeyer2001@...>
Sent: Thursday, June 4, 2020 2:27:11 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-gto] Leaving counterweights on empty mount
 
Hello everyone,

I leave my Mach1/FSQ-106 set up for several days at a time, covering it during the day.  When the temperatures extend into the high 90s - low 100s I will often remove the scope and reinstall at night.  I counter balance the scope with 3 x 9lb weights and 2 x 6lb weights.  My usual method is to pull all of them off the empty mount.  Is it reasonable to leave any of the weights on the mount with no scope during the day?   

Joe   


Leaving counterweights on empty mount

Joseph Beyer
 

Hello everyone,

I leave my Mach1/FSQ-106 set up for several days at a time, covering it during the day.  When the temperatures extend into the high 90s - low 100s I will often remove the scope and reinstall at night.  I counter balance the scope with 3 x 9lb weights and 2 x 6lb weights.  My usual method is to pull all of them off the empty mount.  Is it reasonable to leave any of the weights on the mount with no scope during the day?   

Joe   


Re: Unguided with pointing model

willsonjared
 

A tracking model that’s good enough for five minute unguided images with your 180 should be possible without losing much imaging time.  That is, you should be able to do it during twilight.  A good polar alignment probably takes about as long as building the model. Maybe an hour total for the two? Depends on the number of points you choose.  If you start as soon as possible after sunset, you may not lose any imaging time at all. If you do lose any, it could easily be less than the accumulated time lost waiting for a guider to settle after dithering twenty or thirty times during the night. Then you could skip the guiding entirely. Assuming you have the AE version of the 1100 you should get results that are equal to or Possibly even marginally better than a well guided image.  Based on testing with my 1100GTO AE the other night (I bought it a year ago but have only been using it for the past couple months), typical star eccentricity at 1,160mm focal length with a 5 minute unguided images is between 0.45 and 0.55. That’s using a model that’s probably better than you would build “in the field”, but still.  It works quite well with a moderate number of points.  When I spoke with Ray G at the last Advanced Imaging Conference he recommended starting with, say, a 70 point model for field use.


Re: NGC5371 and surrounding galaxies

willsonjared
 

For me, this feature will be the difference between a Mach2 being, “cool, but don’t really see a reason to upgrade from my Mach1” and being, “Wow, that would make it easy to bring a system into the field without needing to guide!”  Well done.  I can now see myself replacing my Mach1 at some point in the future which is something I couldn’t have imagined when the Mach2 was announced.


Re: Mount is "lost"

willsonjared
 

I suspect your mount initially got “lost” because of the differences between a sync and a recal.  You mentioned using the meridian delay function. This is where people occasionally get into trouble on the differences between the two. Look through the user manual—I seem to recall it does a good job of explaining the difference and how to use them effectively.

As to the current pointing issues... You have a lot of focal length in your SCT, a movable primary mirror, and it sounds like you have not yet done a careful polar alignment. I would start there—doing the careful polar alignment. It won’t change the fact that you have a movable primary and a lot of focal length, but it will improve things. 

Long term, though, you may always have challenges with pointing accuracy. Between the focal length (which results in a small field of view), atmospheric refraction, mechanical imperfections in the mount, flexure, and, especially, the shifting primary it may not be possible for slews to always put your subject in the field of view.  You could look at building a solid pointing model using APCC Pro (not free), but you would need some way to do plate solves, and I’m not sure that is possible with a DSLR. Someone else may have relevant experience on that. Were you planning on sticking with the SLR?


Re: Setup in yard #Mach2GTO

ernie.mastroianni@...
 

Hello everyone,
Hey Energized Guy, good to hear from you! Hope we can do some imaging at Harrington soon. I have much to learn from you. And Michael, thanks for the cart tip. Two computers are because I don't yet have the Mach2 handset and I run my guide and main cameras from a Mac. I'm a retired journalist, Macs are all I know. The second laptop is borrowed and has APCC, ASCOM and TheSkyX. I'll migrate to a PC soon, but in the meantime I use what I have. Putting my computer inside an insulated box was actually a suggestion from George W., and it is working out well. Here in Wisconsin, cold temps and dew were shutting down my Mac in the field, even with heavy duty batteries. I also have a cloth curtain that covers the box opening to keep the stray light from bothering others who image at remote sites. Cheers to all,
Ernie


Re: Setup in yard #Mach2GTO

Michael Hambrick <mike.hambrick@...>
 

Nice setup Ernie

You have an interesting setup for your laptops (two of them ??) Is that a cardboard box with closed cell polyethylene foam for insulation ? The insulation is a good idea. I have always had a concern about dew and condensation accumulating on my laptop. I finally bought a 3 level roll cart for this purpose. My laptop sits on the middle shelf. Lately I have been covering the whole cart with a space blanket to keep dew out and stray light from the laptop in.

The cart has a 300 pound capacity. I set up and take down everything every night, and the cart comes in handy for hauling all my gear back and forth

 


Best Regards

Michael Hambrick
ARLANXEO
TSR Global Manufacturing Support
PO Box 2000
Orange, TX 77631-2000
Phone: +1 (409) 882-2799
email: mike.hambrick@...


Re: Mount is "lost"

Christopher Erickson
 

It looks like you have done a careful job with cable management but any new, temporary cable that is snagging on anything can result in the symptoms you describe.

Or maybe despite your best efforts, your umbilical is catching or snagging somehow.

Or thirdly, you have a chain of optical bits stacked on the back of that scope. Any chance that any of the interconnected components is slipping, sagging or shifting? Any loose set/lock/thumb screws anywhere back there?

No mirror shift problems? Are you using the mirror locks or is the primary unlocked? I can't tell for sure if you have an electronic focuser in that optical stack in the back.

Are your secondary collimation screws snug? No unstable secondary mirror issues?

I hope this helps.


On Wed, Jun 3, 2020 at 5:09 AM Michael Hamburg via groups.io <michael_hamburg44=yahoo.com@groups.io> wrote:
I am the 2nd owner of an AP900 that is permanently mounted in my observatory. When I got it I did a preliminary PA, 2-star calibration, and then a Quick Drift Meridian Delay. First session imaging seemed to go well. I use the hand controller which I initialized as per instructions. The only external program connected to the mount is PHD2. After a too long hiatus, the next session was a disaster. The mount wouldn't point in the correct spot- all the GoTos were way off. Last weekend I tried to recalibrate startingfrom the Park 3 position using the 2- star method. I could get the scope to get close to the 2nd star, but when slewing back to the 1st star it was off. I went back and forth. (In this case between Arcturus and Spica.) I faithfully followed the instructions in the manual but too no avail. Then theclouds came. I must be doing something very wrong. I would appreciate any and all help. (One of my hurdles is that I am 160 miles from my observatory during the week but here in Brooklyn, the internet is great. At the western MA site, the internet stinks so it is difficult to communicate on site.) Thanks again.


Re: Mount is "lost"

 

you might consider polemaster, it's a couple hundred, but so incredibly simple and will work with your DSLR setup


On Wed, Jun 3, 2020 at 3:23 PM Michael Hamburg via groups.io <michael_hamburg44=yahoo.com@groups.io> wrote:
Thanks for the replies. SharpCap seems intriguing; however, it only works with certain cameras not DSLRs. I have a Lodestar hooked up to an OAG for my Edge 11HD - way too long a focal length. My imaging camera is a Canon 6D.  My finder scope is a Celestron 9 X 50mm RACI. I don't think I can use SharpCap with that. There is Astrotortilla, but I haven't learned how to use that. I may be able to use PHD2's drift align, but it all seems a bit daunting.
 
Best wishes, Michael


On Wednesday, June 3, 2020, 03:21:27 PM EDT, Steven Panish <scpanish@...> wrote:


First thing is to get good polar alignment, as Roland says.  I find the quickest method is in SharpCap Pro ($15/yr).  Very easy to use and unaffected by orthogonality error.

Steve

On Wed, Jun 3, 2020 at 1:47 PM Dale Ghent <daleg@...> wrote:

You have a photography setup, so why not just skip over messing with star syncs and just do a plate solve + sync using whichever astrophotography app that you employ?

/dale

> On Jun 3, 2020, at 11:06 AM, Michael Hamburg via groups.io <michael_hamburg44=yahoo.com@groups.io> wrote:
>
> I am the 2nd owner of an AP900 that is permanently mounted in my observatory. When I got it I did a preliminary PA, 2-star calibration, and then a Quick Drift Meridian Delay. First session imaging seemed to go well. I use the hand controller which I initialized as per instructions. The only external program connected to the mount is PHD2. After a too long hiatus, the next session was a disaster. The mount wouldn't point in the correct spot- all the GoTos were way off. Last weekend I tried to recalibrate startingfrom the Park 3 position using the 2- star method. I could get the scope to get close to the 2nd star, but when slewing back to the 1st star it was off. I went back and forth. (In this case between Arcturus and Spica.) I faithfully followed the instructions in the manual but too no avail. Then theclouds came. I must be doing something very wrong. I would appreciate any and all help. (One of my hurdles is that I am 160 miles from my observatory during the week but here in Brooklyn, the internet is great. At the western MA site, the internet stinks so it is difficult to communicate on site.) Thanks again.<20200529_165904.jpg>
>






--
Brian 



Brian Valente


Re: Setup in yard #Mach2GTO

Bill Long
 

Beauty. I use that same tripod on my 1100. Big fan of it.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of ernie.mastroianni@... <ernie.mastroianni@...>
Sent: Wednesday, June 3, 2020 6:33 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-gto] Setup in yard #Mach2GTO
 
Hello group,
My Mach2 was recently delivered, and I've been slowly learning the system in my suburban Milwaukee back yard. My previous mount purchase was in 1994 (a Losmandy G11) so I have much to learn. A big thanks to George W. who has been quite patient and quick to answer my questions. I'll use the mount at various locations in my yard (depending on the target) and at remote dark-sky sites. So it will be all portable, all the time.

A side note, I was out drift-aligning late Monday night, and a nearby crowd of George Floyd protesters drew three low-flying helicopters that at times  hovered right over my home. This went on for at least an hour. I feared that if one was a police helicopter, its occupants might notice the lone person aiming suspicious-looking gear their way and aim one of those high-powered searchlights at me. Never happened, but a weird stargazing experience all the same.
Ernie


Re: Mount is "lost"

Roland Christen
 

PHD drift align is so easy, even I can do it. It's totally automatic and very intuitive.

Rolando



-----Original Message-----
From: Michael Hamburg via groups.io <michael_hamburg44@...>
To: main@ap-gto.groups.io
Sent: Wed, Jun 3, 2020 5:23 pm
Subject: Re: [ap-gto] Mount is "lost"

Thanks for the replies. SharpCap seems intriguing; however, it only works with certain cameras not DSLRs. I have a Lodestar hooked up to an OAG for my Edge 11HD - way too long a focal length. My imaging camera is a Canon 6D.  My finder scope is a Celestron 9 X 50mm RACI. I don't think I can use SharpCap with that. There is Astrotortilla, but I haven't learned how to use that. I may be able to use PHD2's drift align, but it all seems a bit daunting.
 
Best wishes, Michael


On Wednesday, June 3, 2020, 03:21:27 PM EDT, Steven Panish <scpanish@...> wrote:


First thing is to get good polar alignment, as Roland says.  I find the quickest method is in SharpCap Pro ($15/yr).  Very easy to use and unaffected by orthogonality error.

Steve

On Wed, Jun 3, 2020 at 1:47 PM Dale Ghent <daleg@...> wrote:

You have a photography setup, so why not just skip over messing with star syncs and just do a plate solve + sync using whichever astrophotography app that you employ?

/dale

> On Jun 3, 2020, at 11:06 AM, Michael Hamburg via groups.io <michael_hamburg44=yahoo.com@groups.io> wrote:
>
> I am the 2nd owner of an AP900 that is permanently mounted in my observatory. When I got it I did a preliminary PA, 2-star calibration, and then a Quick Drift Meridian Delay. First session imaging seemed to go well. I use the hand controller which I initialized as per instructions. The only external program connected to the mount is PHD2. After a too long hiatus, the next session was a disaster. The mount wouldn't point in the correct spot- all the GoTos were way off. Last weekend I tried to recalibrate startingfrom the Park 3 position using the 2- star method. I could get the scope to get close to the 2nd star, but when slewing back to the 1st star it was off. I went back and forth. (In this case between Arcturus and Spica.) I faithfully followed the instructions in the manual but too no avail. Then theclouds came. I must be doing something very wrong. I would appreciate any and all help. (One of my hurdles is that I am 160 miles from my observatory during the week but here in Brooklyn, the internet is great. At the western MA site, the internet stinks so it is difficult to communicate on site.) Thanks again.<20200529_165904.jpg>
>





Re: Mount is "lost"

Michael Hamburg
 

Thanks for the replies. SharpCap seems intriguing; however, it only works with certain cameras not DSLRs. I have a Lodestar hooked up to an OAG for my Edge 11HD - way too long a focal length. My imaging camera is a Canon 6D.  My finder scope is a Celestron 9 X 50mm RACI. I don't think I can use SharpCap with that. There is Astrotortilla, but I haven't learned how to use that. I may be able to use PHD2's drift align, but it all seems a bit daunting.
 
Best wishes, Michael


On Wednesday, June 3, 2020, 03:21:27 PM EDT, Steven Panish <scpanish@...> wrote:


First thing is to get good polar alignment, as Roland says.  I find the quickest method is in SharpCap Pro ($15/yr).  Very easy to use and unaffected by orthogonality error.

Steve

On Wed, Jun 3, 2020 at 1:47 PM Dale Ghent <daleg@...> wrote:

You have a photography setup, so why not just skip over messing with star syncs and just do a plate solve + sync using whichever astrophotography app that you employ?

/dale

> On Jun 3, 2020, at 11:06 AM, Michael Hamburg via groups.io <michael_hamburg44=yahoo.com@groups.io> wrote:
>
> I am the 2nd owner of an AP900 that is permanently mounted in my observatory. When I got it I did a preliminary PA, 2-star calibration, and then a Quick Drift Meridian Delay. First session imaging seemed to go well. I use the hand controller which I initialized as per instructions. The only external program connected to the mount is PHD2. After a too long hiatus, the next session was a disaster. The mount wouldn't point in the correct spot- all the GoTos were way off. Last weekend I tried to recalibrate startingfrom the Park 3 position using the 2- star method. I could get the scope to get close to the 2nd star, but when slewing back to the 1st star it was off. I went back and forth. (In this case between Arcturus and Spica.) I faithfully followed the instructions in the manual but too no avail. Then theclouds came. I must be doing something very wrong. I would appreciate any and all help. (One of my hurdles is that I am 160 miles from my observatory during the week but here in Brooklyn, the internet is great. At the western MA site, the internet stinks so it is difficult to communicate on site.) Thanks again.<20200529_165904.jpg>
>





Re: Mount is "lost"

Steven Panish
 

First thing is to get good polar alignment, as Roland says.  I find the quickest method is in SharpCap Pro ($15/yr).  Very easy to use and unaffected by orthogonality error.

Steve

On Wed, Jun 3, 2020 at 1:47 PM Dale Ghent <daleg@...> wrote:

You have a photography setup, so why not just skip over messing with star syncs and just do a plate solve + sync using whichever astrophotography app that you employ?

/dale

> On Jun 3, 2020, at 11:06 AM, Michael Hamburg via groups.io <michael_hamburg44=yahoo.com@groups.io> wrote:
>
> I am the 2nd owner of an AP900 that is permanently mounted in my observatory. When I got it I did a preliminary PA, 2-star calibration, and then a Quick Drift Meridian Delay. First session imaging seemed to go well. I use the hand controller which I initialized as per instructions. The only external program connected to the mount is PHD2. After a too long hiatus, the next session was a disaster. The mount wouldn't point in the correct spot- all the GoTos were way off. Last weekend I tried to recalibrate startingfrom the Park 3 position using the 2- star method. I could get the scope to get close to the 2nd star, but when slewing back to the 1st star it was off. I went back and forth. (In this case between Arcturus and Spica.) I faithfully followed the instructions in the manual but too no avail. Then theclouds came. I must be doing something very wrong. I would appreciate any and all help. (One of my hurdles is that I am 160 miles from my observatory during the week but here in Brooklyn, the internet is great. At the western MA site, the internet stinks so it is difficult to communicate on site.) Thanks again.<20200529_165904.jpg>
>





Re: A note about posting URLs

Mike Dodd
 

On 6/3/2020 1:12 PM, jimmyjujames wrote:
I did not know about the <URL> brackets.

<http://www.jimmyjujames.com/>
I found if I add a new return at end of URL it turns URL blue and makes
it linkable.
http://www.jimmyjujames.com/
I think I'm a bit out of date. The link in Roland's original post I received was not a clickable link, but the URLs in my reply WERE links when the posting came back from groups.io.

I received a private email from someone saying he hasn't used angle brackets for 10 years.

It looks like modern email clients (I use Thunderbird) convert many but not all URLs to clickable links.

--- Mike


Re: Mount is "lost"

Dale Ghent
 

You have a photography setup, so why not just skip over messing with star syncs and just do a plate solve + sync using whichever astrophotography app that you employ?

/dale

On Jun 3, 2020, at 11:06 AM, Michael Hamburg via groups.io <michael_hamburg44=yahoo.com@groups.io> wrote:

I am the 2nd owner of an AP900 that is permanently mounted in my observatory. When I got it I did a preliminary PA, 2-star calibration, and then a Quick Drift Meridian Delay. First session imaging seemed to go well. I use the hand controller which I initialized as per instructions. The only external program connected to the mount is PHD2. After a too long hiatus, the next session was a disaster. The mount wouldn't point in the correct spot- all the GoTos were way off. Last weekend I tried to recalibrate startingfrom the Park 3 position using the 2- star method. I could get the scope to get close to the 2nd star, but when slewing back to the 1st star it was off. I went back and forth. (In this case between Arcturus and Spica.) I faithfully followed the instructions in the manual but too no avail. Then theclouds came. I must be doing something very wrong. I would appreciate any and all help. (One of my hurdles is that I am 160 miles from my observatory during the week but here in Brooklyn, the internet is great. At the western MA site, the internet stinks so it is difficult to communicate on site.) Thanks again.<20200529_165904.jpg>


Re: A note about posting URLs

jimmyjujames
 

 
I did not know about the <URL> brackets.

<http://www.jimmyjujames.com/>
 
I found if I add a new return at end of URL it turns URL blue and makes it linkable.
 
Jimmy
The sky is not the limit!
 


Re: Mount is "lost"

Roland Christen
 

I don't believe the battery is bad. If the stars are close and off just a small amount, it points to a poor misalign. If the battery is bad, you will get no pointing whatsoever, all data is scrambled and the mount will not go anywhere even close.

Rolando



-----Original Message-----
From: Jodi McCullough <jmccul@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Wed, Jun 3, 2020 11:34 am
Subject: Re: [ap-gto] Mount is "lost"

George at AP is a big help.  I suspect the battery in the hand paddle is bad.  We had to replace the wired in one then it was fine.  Gave us similar problems.


On Jun 3, 2020, at 11:10 AM, Michael Hamburg via groups.io <michael_hamburg44@...> wrote:

I am the 2nd owner of an AP900 that is permanently mounted in my observatory. When I got it I did a preliminary PA, 2-star calibration, and then a Quick Drift Meridian Delay. First session imaging seemed to go well. I use the hand controller which I initialized as per instructions. The only external program connected to the mount is PHD2. After a too long hiatus, the next session was a disaster. The mount wouldn't point in the correct spot- all the GoTos were way off. Last weekend I tried to recalibrate startingfrom the Park 3 position using the 2- star method. I could get the scope to get close to the 2nd star, but when slewing back to the 1st star it was off. I went back and forth. (In this case between Arcturus and Spica.) I faithfully followed the instructions in the manual but too no avail. Then theclouds came. I must be doing something very wrong. I would appreciate any and all help. (One of my hurdles is that I am 160 miles from my observatory during the week but here in Brooklyn, the internet is great. At the western MA site, the internet stinks so it is difficult to communicate on site.) Thanks again.<20200529_165904.jpg>


Re: Mount is "lost"

Jodi McCullough
 

George at AP is a big help.  I suspect the battery in the hand paddle is bad.  We had to replace the wired in one then it was fine.  Gave us similar problems.


On Jun 3, 2020, at 11:10 AM, Michael Hamburg via groups.io <michael_hamburg44@...> wrote:

I am the 2nd owner of an AP900 that is permanently mounted in my observatory. When I got it I did a preliminary PA, 2-star calibration, and then a Quick Drift Meridian Delay. First session imaging seemed to go well. I use the hand controller which I initialized as per instructions. The only external program connected to the mount is PHD2. After a too long hiatus, the next session was a disaster. The mount wouldn't point in the correct spot- all the GoTos were way off. Last weekend I tried to recalibrate startingfrom the Park 3 position using the 2- star method. I could get the scope to get close to the 2nd star, but when slewing back to the 1st star it was off. I went back and forth. (In this case between Arcturus and Spica.) I faithfully followed the instructions in the manual but too no avail. Then theclouds came. I must be doing something very wrong. I would appreciate any and all help. (One of my hurdles is that I am 160 miles from my observatory during the week but here in Brooklyn, the internet is great. At the western MA site, the internet stinks so it is difficult to communicate on site.) Thanks again.<20200529_165904.jpg>


Re: Mount is "lost"

Roland Christen
 

I believe you have 2 issues which you may not be understanding.

1st issue is "Mount is lost". This can happen for a number of reasons, but you can recover by simply sending the mount to one of the park positions. If the mount ends up being off from that position, simply loosen the clutches and physically move the mount until it is in the correct position.

2nd issue - being off when slewing from one star to another is not an indication that the mount is lost. I'm not sure of what methods you are using for polar alignment, but if your slews are off it is an indication that your polar alignment is off. Doing polar alignment using the quick Drift alignment or 2 star alignment is only approximate and works for short focal length wide field scopes. When you have substantial focal length scopes, such as your SCT, then mount polar alignment has to be much more accurately done in order to get any kind of pointing accuracy. If you are off by 1 degree in a wide-field refractor, the object would probably be in the field, but with a long focus SCT it would not appear. That does not mean that the mount is lost, or that you have done something very wrong.

Pointing a long scope very accurately requires excellent polar alignment, but even that is not enough. The sky itself is not uniform due to atmospheric refraction. SCTs can have mirror flop which causes star positions to be misplaced due to gravity from one part of the sky to another. Then there is the issue of optical and mechanical orthogonality when going from one side of the sky to another.

All these things can add up, but the largest contributor to poor pointing is polar misalignment. There are a number of tools available, software and hardware, that can point your polar axis very accurately to the NCP. Since you have a permanent setup, that only has to be done once. I recommend drift alignment using PEMPro. With this program you have a number of tools that will not only get your mount properly polar aligned, but also will spiff up your tracking accuracy. Very useful tool.

Rolando



-----Original Message-----
From: Michael Hamburg via groups.io <michael_hamburg44@...>
To: main@ap-gto.groups.io
Sent: Wed, Jun 3, 2020 10:06 am
Subject: [ap-gto] Mount is "lost"

I am the 2nd owner of an AP900 that is permanently mounted in my observatory. When I got it I did a preliminary PA, 2-star calibration, and then a Quick Drift Meridian Delay. First session imaging seemed to go well. I use the hand controller which I initialized as per instructions. The only external program connected to the mount is PHD2. After a too long hiatus, the next session was a disaster. The mount wouldn't point in the correct spot- all the GoTos were way off. Last weekend I tried to recalibrate startingfrom the Park 3 position using the 2- star method. I could get the scope to get close to the 2nd star, but when slewing back to the 1st star it was off. I went back and forth. (In this case between Arcturus and Spica.) I faithfully followed the instructions in the manual but too no avail. Then theclouds came. I must be doing something very wrong. I would appreciate any and all help. (One of my hurdles is that I am 160 miles from my observatory during the week but here in Brooklyn, the internet is great. At the western MA site, the internet stinks so it is difficult to communicate on site.) Thanks again.


Re: Setup in yard #Mach2GTO

Dominique Durand
 
Edited

Hi Ernie,

Happy for you that you are finally your Mach2 ... and there you change a little world.
I started with Astro-Physics in 2011 (Mach1 which I still have) ... and then I continued ... Thank you all because they are always there to answer our questions and I too have a lot asked George when I ordered ... even if my translated French is not always very clear.

Dominique

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