Re: Optimising gear ratio : alt ratio correction calculation
Raphael,
I'm all for 'getting the best out of the system' .... kudos to you and the best in your work.?
g.
------ Original Message ------
Date 4/27/2025 4:17:38 PM
Subject Re: [ServoCAT] Optimising gear ratio : alt ratio correction calculation
Gary,
"My suspicion is you might be asking too much from such a large scope"
Yes, for sure !!
In fact trying to get the maximum from my scope is really a target in itself.
With my small field of view, it is necessary to have pointing and ratio as accurates as possible to follow as perfectly as possible ISS.
You know it's like Gabriel Wiklund that is optimising again and again the autoguiding with wonderfull results at the end. Great to obtain the very best from a scope !
I want to go as deep as possible for optimising the scope. Maybe I will be blocked by mechanical problem, but at least I want to go to this point.
?
I will continue using drifting test, either by tweaking the ratio 5 by 5 as you suggest, either using the "track improvment" method but with the correction I was mentionning in my initial message for the alt correction. Even if I'm wrong with the correction I mentioned in my initial message, it will just take more iterations to achieve the best ratio I could achieve before mechanicalo limitation.
I will post the results after the iterations
Thanks for your help
Rapha?l
?
|
Re: Optimising gear ratio : alt ratio correction calculation
Gary,
"My suspicion is you might be asking too much from such a large scope"
Yes, for sure !!
In fact trying to get the maximum from my scope is really a target in itself.
With my small field of view, it is necessary to have pointing and ratio as accurates as possible to follow as perfectly as possible ISS.
You know it's like Gabriel Wiklund that is optimising again and again the autoguiding with wonderfull results at the end. Great to obtain the very best from a scope !
I want to go as deep as possible for optimising the scope. Maybe I will be blocked by mechanical problem, but at least I want to go to this point.
?
I will continue using drifting test, either by tweaking the ratio 5 by 5 as you suggest, either using the "track improvment" method but with the correction I was mentionning in my initial message for the alt correction. Even if I'm wrong with the correction I mentioned in my initial message, it will just take more iterations to achieve the best ratio I could achieve before mechanicalo limitation.
I will post the results after the iterations
Thanks for your help
Rapha?l
?
|
Re: Optimising gear ratio : alt ratio correction calculation
Raphael,
The "stop" might be with only 0.1+ degrees left. It would then just go to the second move and you'd not notice the stop. That is extremely good for the purpose for which it was designed - visual astronomy. Keep in mind - on the vast majority of 'hand made' scopes, there's enough variability in the dimensions and mounting of the drive surfaces on either the ALT or the AZ (ground board or bearings) that it isn't going to be one value.?
If your alignment is accurate and especially if you are using TPAS to correct for mount errors then it should track extremely well since it is closed loop (based on the user centering the object at the start).
If you want to take the time since you are dialed in so well the only way to do so is indeed to do the drift test you did over a longer period of time. Alternatively you can do the drift method for shorter period but just tweak the ratio (on the axis you're testing for - do one at a time!) by a count of say 5. Then repeat the test and see what that gives you. You can then ratio the results on 2 tests to get it (better) corrected.?
The other thing is there could well be?issues like friction and slippage and other mechanical things that the system is not designed to account for. Even torque induced bending might well be enough to move the object.?
My suspicion is you might be asking too much from such a large scope.?
g.
?
------ Original Message ------
Date 4/27/2025 11:33:22 AM
Subject Re: [ServoCAT] Optimising gear ratio : alt ratio correction calculation
Dear Gary,
I did it already one and corrected ratio. But there is still a remaining of correction of ratio needed.?
I mean yesterday night, the scope was pointing accurately because I had just calculated the IE of TPAS (with other persistant terms already computed from previous test)so I had a computed TPAS leading to RMS of 6'. OK
Then I centered a star and after 35 min it was 20' offcenter (0.33¡ã). Frankly this is OK for visual follow up but still not accurate enough to follow ISS that move 200 times quicker than sideral.
?
But I?can't I achieve anymore the "Simple Track Improvements Test" because :
In the "Simple Track Improvements Test" it is said :? ?
"Push the GOTO ¨C it will start to move ¨C now watch carefully the GUIDE value for this axis (left for AZ, right for
ALT). The scope will move a distance and then come to a stop. It will will then quickly pick up and start moving
again. You need to get the GUIDE value when it first stops"
The problem is since I'm already close to perfect ratio I can't notice any stop even if I put 170¡ã instead of 100¡ã in the procedure.
Maybe this is because my scope is massive, so I need to put? a 5 seconds deceleration => could this make it more difficult to notice the "stop" if it occurs during the deceleration ? I don't know... but I can't notice any stop.
?
So this is why I wanted then to use? the "track improvment" method described in the Sercocat quick V3 file since this one is unsensitive to deceleration.
But then I have the calculation issue I indicated in my first message
I hope this clarify my original question
Regards
Rapha?l
|
Re: Optimising gear ratio : alt ratio correction calculation
Dear Gary,
I did it already one and corrected ratio. But there is still a remaining of correction of ratio needed.?
I mean yesterday night, the scope was pointing accurately because I had just calculated the IE of TPAS (with other persistant terms already computed from previous test)so I had a computed TPAS leading to RMS of 6'. OK
Then I centered a star and after 35 min it was 20' offcenter (0.33¡ã). Frankly this is OK for visual follow up but still not accurate enough to follow ISS that move 200 times quicker than sideral.
?
But I?can't I achieve anymore the "Simple Track Improvements Test" because :
In the "Simple Track Improvements Test" it is said :? ?
"Push the GOTO ¨C it will start to move ¨C now watch carefully the GUIDE value for this axis (left for AZ, right for
ALT). The scope will move a distance and then come to a stop. It will will then quickly pick up and start moving
again. You need to get the GUIDE value when it first stops"
The problem is since I'm already close to perfect ratio I can't notice any stop even if I put 170¡ã instead of 100¡ã in the procedure.
Maybe this is because my scope is massive, so I need to put? a 5 seconds deceleration => could this make it more difficult to notice the "stop" if it occurs during the deceleration ? I don't know... but I can't notice any stop.
?
So this is why I wanted then to use? the "track improvment" method described in the Sercocat quick V3 file since this one is unsensitive to deceleration.
But then I have the calculation issue I indicated in my first message
I hope this clarify my original question
Regards
Rapha?l
|
Re: Optimising gear ratio : alt ratio correction calculation
Raphael,
Its easiest to use the "Simple Track Improvements Test" document found on the CD. If you don't have the CD write to me direct and I'll send you the doc. Its a simple txt doc.?
Gary?
------ Original Message ------
Date 4/27/2025 10:36:32 AM
Subject [ServoCAT] Optimising gear ratio : alt ratio correction calculation
Dear all,
I have used servocat+AN to follow ISS.
As ISS is moving at high speed you have to have have very good ratio adjustment (and also good pointing to have the maths done at good location => I implemented a TPAS)
To improve accuracy of tracking I started to improve ratio using the "track improvment" method described in the Sercocat quick V3 file.
To adjust Az ratio, it describes to use a star located at south.
I understand because at south it's a pure Az movement, no alt movement.
?
Then for Alt ratio, it describes to use a star located at east.
For ex you strack an object for 1/2 hour, the sky moved 7.5¡ã (=360/24/2)and you divide your offset by this 7.5¡ã value to calculate a correction factor of your Alt ratio.
What I don't understand is that for a star located at east, it's not a pure Alt movement so I don't understand why you divide your offset by 7.5¡ã?
For example I live at 45¡ã latitude.
In this case the star move only sin(45)*7.5= 5.3 in Alt (and 5.3 in Az).
After 1/2h let say I see in AN an offset for the star of 0.1¡ã in Az and 0.2¡ã in alt => I would have divided the alt offset 0.2 by 5.3 to get the correction ratio, not 0.2/7.5?
I'm certainly wrong, but could someone explain my mistake ?
Regards
Rapha?l
|
Optimising gear ratio : alt ratio correction calculation
Dear all,
I have used servocat+AN to follow ISS.
As ISS is moving at high speed you have to have have very good ratio adjustment (and also good pointing to have the maths done at good location => I implemented a TPAS)
To improve accuracy of tracking I started to improve ratio using the "track improvment" method described in the Sercocat quick V3 file.
To adjust Az ratio, it describes to use a star located at south.
I understand because at south it's a pure Az movement, no alt movement.
?
Then for Alt ratio, it describes to use a star located at east.
For ex you strack an object for 1/2 hour, the sky moved 7.5¡ã (=360/24/2)and you divide your offset by this 7.5¡ã value to calculate a correction factor of your Alt ratio.
What I don't understand is that for a star located at east, it's not a pure Alt movement so I don't understand why you divide your offset by 7.5¡ã?
For example I live at 45¡ã latitude.
In this case the star move only sin(45)*7.5= 5.3 in Alt (and 5.3 in Az).
After 1/2h let say I see in AN an offset for the star of 0.1¡ã in Az and 0.2¡ã in alt => I would have divided the alt offset 0.2 by 5.3 to get the correction ratio, not 0.2/7.5?
I'm certainly wrong, but could someone explain my mistake ?
Regards
Rapha?l
|
Re: servocat and nexus dsc pro
Perfect ?? The stars thing doesn't happen often , but for a fact if you use Spica in North America nexus will not give you a good warp number. Also sometimes certain star combos that are at odd angles and too close to each other can result in an off number as well. You would notice right off if you know you hit them dead center yet your warp number keeps being off. ? It is a very minor thing. The newest firmware may have resolved this as well. I haven't had a chance to use the new firmware.
Mickey
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On Apr 22, 2025, at 6:40?PM, K9RX - Gary via groups.io <amateurK9RX@...> wrote:
? Mickey,?
I'm not saying it makes no difference - I am saying it isn't going to account for a 5¡ã error!?
g.
------ Original Message ------
Date 4/22/2025 5:16:34 PM
Subject Re: [ServoCAT] servocat and nexus dsc pro
Actually with the Nexus it can make a difference. This may not be the problem but it can make a difference.
Mickey On Apr 22, 2025, at 12:56?PM, K9RX - Gary via groups.io <amateurK9RX@...> wrote:
? The 2 stars used should not cause an issue in pointing of that degree nor cause it to be off on one of those stars (when returned to it). The quality of the alignment - whether the stars were the right stars (i.e. you were on the ones you claimed) could make a difference.?
Generally with that much difference I'd suggest you are seeing slippage in one of the encoders. Generally the ALT is the culprit. Make sure the ALT encoder arm is not pushing up or down on the encoder shaft or twisting it.?
g.
------ Original Message ------
Date 4/22/2025 12:29:47 PM
Subject Re: [ServoCAT] servocat and nexus dsc pro
Hello Frank, what 2 stars are you using for your 2 star alignment?
Mickey On Apr 22, 2025, at 12:16?PM, fwillburn <frank@...> wrote:
? I have the jumpers switched and the nexus dsc pro is now communicating. I did a two star alignment and it pointed good to the first five targets and then on the sixth target it was off by about 5 degrees this is the order of the targets M51-m81-m82-albireo-m81 and then when i whent back to albireo it was off about 5 degrees. I have double checked all the settings. Let me know what you think.
Thanks
Frank? ??
|
Re: servocat and nexus dsc pro
Thanks for all of the help I tried it again tonight and every thing is working great so i am not sure but i think I must of had a cable not making good contact but every thing is good now.
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I am with Gary n this one. About 95% chance it is slipping or binding. The other 5% is probably wiring related. Those encoders can¡¯t tolerate any off axis thrust.
Bob
?
?
I'm not saying it makes no difference - I am saying it isn't going to account for a 5¡ã error!?
------ Original Message ------
Date 4/22/2025 5:16:34 PM
Subject Re: [ServoCAT] servocat and nexus dsc pro
Actually with the Nexus it can make a difference. This may not be the problem but it can make a difference.
?
On Apr 22, 2025, at 12:56?PM, K9RX - Gary via groups.io <amateurK9RX@...> wrote:
?
The 2 stars used should not cause an issue in pointing of that degree nor cause it to be off on one of those stars (when returned to it). The quality of the alignment - whether the stars
were the right stars (i.e. you were on the ones you claimed) could make a difference.?
Generally with that much difference I'd suggest you are seeing slippage in one of the encoders. Generally the ALT is the culprit. Make sure the ALT encoder arm is not pushing up or down
on the encoder shaft or twisting it.?
------ Original Message ------
Date 4/22/2025 12:29:47 PM
Subject Re: [ServoCAT] servocat and nexus dsc pro
Hello Frank, what 2 stars are you using for your 2 star alignment?
?
On Apr 22, 2025, at 12:16?PM, fwillburn <frank@...> wrote:
?
I have the jumpers switched and the nexus dsc pro is now communicating. I did a two star alignment and it pointed good to the first five targets and then on the sixth target it was off by
about 5 degrees this is the order of the targets M51-m81-m82-albireo-m81 and then when i whent back to albireo it was off about 5 degrees. I have double checked all the settings. Let me know what you think.
|
Re: servocat and nexus dsc pro
I am with Gary n this one. About 95% chance it is slipping or binding. The other 5% is probably wiring related. Those encoders can¡¯t tolerate any off axis thrust. Bob ?
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From: [email protected] <[email protected]> On Behalf Of K9RX - Gary via groups.io
Sent: Tuesday, April 22, 2025 3:40 PM
To: [email protected]
Subject: Re: [ServoCAT] servocat and nexus dsc pro? I'm not saying it makes no difference - I am saying it isn't going to account for a 5¡ã error!? ------ Original Message ------ Date 4/22/2025 5:16:34 PM Subject Re: [ServoCAT] servocat and nexus dsc pro Actually with the Nexus it can make a difference. This may not be the problem but it can make a difference. ?
On Apr 22, 2025, at 12:56?PM, K9RX - Gary via groups.io <amateurK9RX@...> wrote:
? The 2 stars used should not cause an issue in pointing of that degree nor cause it to be off on one of those stars (when returned to it). The quality of the alignment - whether the stars were the right stars (i.e. you were on the ones you claimed) could make a difference.? Generally with that much difference I'd suggest you are seeing slippage in one of the encoders. Generally the ALT is the culprit. Make sure the ALT encoder arm is not pushing up or down on the encoder shaft or twisting it.? ------ Original Message ------ Date 4/22/2025 12:29:47 PM Subject Re: [ServoCAT] servocat and nexus dsc pro Hello Frank, what 2 stars are you using for your 2 star alignment? ?
On Apr 22, 2025, at 12:16?PM, fwillburn <frank@...> wrote:
? I have the jumpers switched and the nexus dsc pro is now communicating. I did a two star alignment and it pointed good to the first five targets and then on the sixth target it was off by about 5 degrees this is the order of the targets M51-m81-m82-albireo-m81 and then when i whent back to albireo it was off about 5 degrees. I have double checked all the settings. Let me know what you think.
|
Re: servocat and nexus dsc pro
Mickey,?
I'm not saying it makes no difference - I am saying it isn't going to account for a 5¡ã error!?
g.
------ Original Message ------
Date 4/22/2025 5:16:34 PM
Subject Re: [ServoCAT] servocat and nexus dsc pro
Actually with the Nexus it can make a difference. This may not be the problem but it can make a difference.
Mickey On Apr 22, 2025, at 12:56?PM, K9RX - Gary via groups.io <amateurK9RX@...> wrote:
? The 2 stars used should not cause an issue in pointing of that degree nor cause it to be off on one of those stars (when returned to it). The quality of the alignment - whether the stars were the right stars (i.e. you were on the ones you claimed) could make a difference.?
Generally with that much difference I'd suggest you are seeing slippage in one of the encoders. Generally the ALT is the culprit. Make sure the ALT encoder arm is not pushing up or down on the encoder shaft or twisting it.?
g.
------ Original Message ------
Date 4/22/2025 12:29:47 PM
Subject Re: [ServoCAT] servocat and nexus dsc pro
Hello Frank, what 2 stars are you using for your 2 star alignment?
Mickey On Apr 22, 2025, at 12:16?PM, fwillburn <frank@...> wrote:
? I have the jumpers switched and the nexus dsc pro is now communicating. I did a two star alignment and it pointed good to the first five targets and then on the sixth target it was off by about 5 degrees this is the order of the targets M51-m81-m82-albireo-m81 and then when i whent back to albireo it was off about 5 degrees. I have double checked all the settings. Let me know what you think.
Thanks
Frank? ??
|
Re: servocat and nexus dsc pro
Actually with the Nexus it can make a difference. This may not be the problem but it can make a difference.
Mickey
toggle quoted message
Show quoted text
On Apr 22, 2025, at 12:56?PM, K9RX - Gary via groups.io <amateurK9RX@...> wrote:
? The 2 stars used should not cause an issue in pointing of that degree nor cause it to be off on one of those stars (when returned to it). The quality of the alignment - whether the stars were the right stars (i.e. you were on the ones you claimed) could make a difference.?
Generally with that much difference I'd suggest you are seeing slippage in one of the encoders. Generally the ALT is the culprit. Make sure the ALT encoder arm is not pushing up or down on the encoder shaft or twisting it.?
g.
------ Original Message ------
Date 4/22/2025 12:29:47 PM
Subject Re: [ServoCAT] servocat and nexus dsc pro
Hello Frank, what 2 stars are you using for your 2 star alignment?
Mickey On Apr 22, 2025, at 12:16?PM, fwillburn <frank@...> wrote:
? I have the jumpers switched and the nexus dsc pro is now communicating. I did a two star alignment and it pointed good to the first five targets and then on the sixth target it was off by about 5 degrees this is the order of the targets M51-m81-m82-albireo-m81 and then when i whent back to albireo it was off about 5 degrees. I have double checked all the settings. Let me know what you think.
Thanks
Frank? ??
|
Re: servocat and nexus dsc pro
The 2 stars used should not cause an issue in pointing of that degree nor cause it to be off on one of those stars (when returned to it). The quality of the alignment - whether the stars were the right stars (i.e. you were on the ones you claimed) could make a difference.?
Generally with that much difference I'd suggest you are seeing slippage in one of the encoders. Generally the ALT is the culprit. Make sure the ALT encoder arm is not pushing up or down on the encoder shaft or twisting it.?
g.
------ Original Message ------
Date 4/22/2025 12:29:47 PM
Subject Re: [ServoCAT] servocat and nexus dsc pro
Hello Frank, what 2 stars are you using for your 2 star alignment?
Mickey On Apr 22, 2025, at 12:16?PM, fwillburn <frank@...> wrote:
? I have the jumpers switched and the nexus dsc pro is now communicating. I did a two star alignment and it pointed good to the first five targets and then on the sixth target it was off by about 5 degrees this is the order of the targets M51-m81-m82-albireo-m81 and then when i whent back to albireo it was off about 5 degrees. I have double checked all the settings. Let me know what you think.
Thanks
Frank? ??
|
Re: servocat and nexus dsc pro
Hello Frank, what 2 stars are you using for your 2 star alignment?
Mickey
toggle quoted message
Show quoted text
On Apr 22, 2025, at 12:16?PM, fwillburn <frank@...> wrote:
? I have the jumpers switched and the nexus dsc pro is now communicating. I did a two star alignment and it pointed good to the first five targets and then on the sixth target it was off by about 5 degrees this is the order of the targets M51-m81-m82-albireo-m81 and then when i whent back to albireo it was off about 5 degrees. I have double checked all the settings. Let me know what you think.
Thanks
Frank? ??
|
Re: servocat and nexus dsc pro
I have the jumpers switched and the nexus dsc pro is now communicating. I did a two star alignment and it pointed good to the first five targets and then on the sixth target it was off by about 5 degrees this is the order of the targets M51-m81-m82-albireo-m81 and then when i whent back to albireo it was off about 5 degrees. I have double checked all the settings. Let me know what you think.
Thanks
Frank? ??
|
Re: Nexus DSC - object selection
Hello Steve,
The filter will be reset upon a power cycle of Nexus DSC Pro. It is implemented this way to avoid the situations you have described - in case the filter is enabled and by the next time you observe you may not remember having the filter enabled.
I suspect the filter was accidentally enabled which resulted in the behaviour you described.
Best Regards,
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On 22 Apr 2025, at 11:39?PM, Steve Goldberg via groups.io <sgoldberg124@...> wrote:
Hi Serge,
We checked the Nexus and we did not have a filter set.
?
The Nexus is on Amelia's 15" Obsession.?
However the Nexus worked perfectly last night. Since we are just starting out, she would select an object and use push-to to move the scope. The Nexus would get her very close to the object.??
?
Regards?
Steve and Amelia?
?
?
?
On 04/21/2025 7:13 PM CDT Serge Antonov <serge@...> wrote:
?
?
Hello Steve,
?
Most likely you have enabled a filter in catalogues.
?
Please go to Find->From Catalogue, press right arrow key to select ¡®FILTER¡¯ tab and change the filter to ¡¯None¡¯ using up/down arrow keys. That should fix the problem.
?
Best Regards,
Serge Antonov, Astro Devices.
On 22 Apr 2025, at 5:32?AM, Steve Goldberg via groups.io <sgoldberg124@...> wrote:
Hi,
We have recently purchased the Nexus DSC Pro and tried it last night while at the Texas Star Party.
I have a question about selecting an object.
?
We were in the Catalog Messier, and wanted M31 (or some other object currently up). We typed in the 3 then 1 and pressed OK. It returned some other M object information, not 31.
?
Something similar with the NGC catalog. Request one specific object and a different NGC object is displayed.
?
The first couple of objects we selected during the night were fine, no issue. But after some use, the above issue started happening.
?
Any thoughts on why this is happening?
This is a new Nexus right out the box.
?
Thanks
Steve Goldberg
|
Re: Nexus DSC - object selection
Hi Serge,
We checked the Nexus and we did not have a filter set.
?
The Nexus is on Amelia's 15" Obsession.?
However the Nexus worked perfectly last night. Since we are just starting out, she would select an object and use push-to to move the scope. The Nexus would get her very close to the object.??
?
Regards?
Steve and Amelia?
?
?
?
On 04/21/2025 7:13 PM CDT Serge Antonov <serge@...> wrote:
?
?
Hello Steve,
?
Most likely you have enabled a filter in catalogues.
?
Please go to Find->From Catalogue, press right arrow key to select ¡®FILTER¡¯ tab and change the filter to ¡¯None¡¯ using up/down arrow keys. That should fix the problem.
?
Best Regards,
Serge Antonov, Astro Devices.
On 22 Apr 2025, at 5:32?AM, Steve Goldberg via groups.io <sgoldberg124@...> wrote:
Hi,
We have recently purchased the Nexus DSC Pro and tried it last night while at the Texas Star Party.
I have a question about selecting an object.
?
We were in the Catalog Messier, and wanted M31 (or some other object currently up). We typed in the 3 then 1 and pressed OK. It returned some other M object information, not 31.
?
Something similar with the NGC catalog. Request one specific object and a different NGC object is displayed.
?
The first couple of objects we selected during the night were fine, no issue. But after some use, the above issue started happening.
?
Any thoughts on why this is happening?
This is a new Nexus right out the box.
?
Thanks
Steve Goldberg
|
Re: Nexus DSC - object selection
Hello Steve,
Most likely you have enabled a filter in catalogues.
Please go to Find->From Catalogue, press right arrow key to select ¡®FILTER¡¯ tab and change the filter to ¡¯None¡¯ using up/down arrow keys. That should fix the problem.
Best Regards, Serge Antonov, Astro Devices.
toggle quoted message
Show quoted text
On 22 Apr 2025, at 5:32?AM, Steve Goldberg via groups.io <sgoldberg124@...> wrote:
Hi,
We have recently purchased the Nexus DSC Pro and tried it last night while at the Texas Star Party.
I have a question about selecting an object.
?
We were in the Catalog Messier, and wanted M31 (or some other object currently up). We typed in the 3 then 1 and pressed OK. It returned some other M object information, not 31.
?
Something similar with the NGC catalog. Request one specific object and a different NGC object is displayed.
?
The first couple of objects we selected during the night were fine, no issue. But after some use, the above issue started happening.
?
Any thoughts on why this is happening?
This is a new Nexus right out the box.
?
Thanks
Steve Goldberg
|
Re: Nexus DSC - object selection
no need to check the front if you know you have a Gen2 handpad. The Gen2 is not compatible with a Gen3 and vice versa.
g.
------ Original Message ------
Date 4/21/2025 4:37:41 PM
Subject Re: [ServoCAT] Nexus DSC - object selection
Thanks Gary for the info.
She has the Gen 2 hand pad. And it has the slide switch for 3 different speeds.
On the other hand, I have the Gen 3 on my scope.
?
I'll check the labels on the front of the box.
Steve
On 04/21/2025 3:25 PM CDT K9RX - Gary via groups.io <amateurk9rx@...> wrote:
?
?
Steve,
?
Gen2 will use a hand pad - it has the 4 yellow buttons, a green button, and a blue one. The cord is a stereo 1/8" headphone type cable. Also on the front to the left it says PC PORT.?
?
A Gen3 uses a hand controller (it has a microcontroller built in and thus has its own intelligence) with the 4 yellow buttons as well as 2 rows of 4 membrane buttons. The cable is a 4 conductor handset type cable. That front left connector says PC USB.?
?
g.
?
?
?
?
------ Original Message ------
Date 4/21/2025 3:54:44 PM
Subject Re: [ServoCAT] Nexus DSC - object selection
?
Thanks Mickey.
We bought this scope (used) a good number of years ago, so I am going to assume it is a Gen 2. Is there a quick way to determine the gen without opening the box? I don't want to do that in the middle of TSP. If something bad happens, then my wife will not be a happy camper this week. It is on her scope.
?
Steve
On 04/21/2025 2:40 PM CDT Mickey Huffman via groups.io <finman42@...> wrote:
?
?
?
Steve forward your comments to Serge the owner of Astro Devices, he will get back to you quickly. I copied him for you but now you have the info. There are too many variables for me to guess at, are you using the Servocat Gen 3 system with Nexus?
?
Mickey
?
?
?
Hi,
We have recently purchased the Nexus DSC Pro and tried it last night while at the Texas Star Party.
I have a question about selecting an object.
?
We were in the Catalog Messier, and wanted M31 (or some other object currently up). We typed in the 3 then 1 and pressed OK. It returned some other M object information, not 31.
?
Something similar with the NGC catalog. Request one specific object and a different NGC object is displayed.
?
The first couple of objects we selected during the night were fine, no issue. But after some use, the above issue started happening.
?
Any thoughts on why this is happening?
This is a new Nexus right out the box.
?
Thanks
Steve Goldberg
?
?
|
Re: Nexus DSC - object selection
Thanks Gary for the info.
She has the Gen 2 hand pad. And it has the slide switch for 3 different speeds.
On the other hand, I have the Gen 3 on my scope.
?
I'll check the labels on the front of the box.
Steve
On 04/21/2025 3:25 PM CDT K9RX - Gary via groups.io <amateurk9rx@...> wrote:
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Steve,
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Gen2 will use a hand pad - it has the 4 yellow buttons, a green button, and a blue one. The cord is a stereo 1/8" headphone type cable. Also on the front to the left it says PC PORT.?
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A Gen3 uses a hand controller (it has a microcontroller built in and thus has its own intelligence) with the 4 yellow buttons as well as 2 rows of 4 membrane buttons. The cable is a 4 conductor handset type cable. That front left connector says PC USB.?
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g.
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?
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------ Original Message ------
Date 4/21/2025 3:54:44 PM
Subject Re: [ServoCAT] Nexus DSC - object selection
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Thanks Mickey.
We bought this scope (used) a good number of years ago, so I am going to assume it is a Gen 2. Is there a quick way to determine the gen without opening the box? I don't want to do that in the middle of TSP. If something bad happens, then my wife will not be a happy camper this week. It is on her scope.
?
Steve
On 04/21/2025 2:40 PM CDT Mickey Huffman via groups.io <finman42@...> wrote:
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Steve forward your comments to Serge the owner of Astro Devices, he will get back to you quickly. I copied him for you but now you have the info. There are too many variables for me to guess at, are you using the Servocat Gen 3 system with Nexus?
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Mickey
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?
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Hi,
We have recently purchased the Nexus DSC Pro and tried it last night while at the Texas Star Party.
I have a question about selecting an object.
?
We were in the Catalog Messier, and wanted M31 (or some other object currently up). We typed in the 3 then 1 and pressed OK. It returned some other M object information, not 31.
?
Something similar with the NGC catalog. Request one specific object and a different NGC object is displayed.
?
The first couple of objects we selected during the night were fine, no issue. But after some use, the above issue started happening.
?
Any thoughts on why this is happening?
This is a new Nexus right out the box.
?
Thanks
Steve Goldberg
?
?
|
Re: Nexus DSC - object selection
Steve,
Gen2 will use a hand pad - it has the 4 yellow buttons, a green button, and a blue one. The cord is a stereo 1/8" headphone type cable. Also on the front to the left it says PC PORT.?
A Gen3 uses a hand controller (it has a microcontroller built in and thus has its own intelligence) with the 4 yellow buttons as well as 2 rows of 4 membrane buttons. The cable is a 4 conductor handset type cable. That front left connector says PC USB.?
g.
------ Original Message ------
Date 4/21/2025 3:54:44 PM
Subject Re: [ServoCAT] Nexus DSC - object selection
Thanks Mickey.
We bought this scope (used) a good number of years ago, so I am going to assume it is a Gen 2. Is there a quick way to determine the gen without opening the box? I don't want to do that in the middle of TSP. If something bad happens, then my wife will not be a happy camper this week. It is on her scope.
?
Steve
On 04/21/2025 2:40 PM CDT Mickey Huffman via groups.io <finman42@...> wrote:
?
?
?
Steve forward your comments to Serge the owner of Astro Devices, he will get back to you quickly. I copied him for you but now you have the info. There are too many variables for me to guess at, are you using the Servocat Gen 3 system with Nexus?
?
Mickey
?
?
?
Hi,
We have recently purchased the Nexus DSC Pro and tried it last night while at the Texas Star Party.
I have a question about selecting an object.
?
We were in the Catalog Messier, and wanted M31 (or some other object currently up). We typed in the 3 then 1 and pressed OK. It returned some other M object information, not 31.
?
Something similar with the NGC catalog. Request one specific object and a different NGC object is displayed.
?
The first couple of objects we selected during the night were fine, no issue. But after some use, the above issue started happening.
?
Any thoughts on why this is happening?
This is a new Nexus right out the box.
?
Thanks
Steve Goldberg
|
bobrose500