Re: 2 questions for you: Guiding as the next Losmandy Zoom Meetup topic
Hi Jeffrey
I don't see a message Soo if you could resend that would be great. We are on location until Monday so I may not be able to respond until then
Brian
On Sat, May 23, 2020 at 6:48 AM Jeffrey Messikian < c172jeff@...> wrote: Hi Brian,
? I don't know if you got my last private message.? I sent a log file of a recent guide experiance.? The last time, a year ago, you mentioned I had a huge periodic error on a chart you looked at.? I think at 492 seconds.? I upgraded the G9-> a G811.? In any case...?
To answer your questions...
1, how would describe your current guiding?
? I am able to guide, but trying to improve my performance.? I have questions on some of the settings like hysterisis and agressiveness, as well as only guiding on one axis.? If I do guide on one axis, should I overweight the other so that the load is always on the gear tooth face, so no backlash.? Maybe this is a varient of guidign on 2 axis to elinate dec backlash.? ?The last time I did an extensive test, I did not have a good polar alignment.? I sent you this log yesterday wondering if you knew of a way to gleen pk-pk of he new g811 upgrade.?? My email is c172jeff@... for a zoom meeting.Regards,
-- Brian?
Brian Valente portfolio
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Re: 2 questions for you: Guiding as the next Losmandy Zoom Meetup topic
Hi Brian, ? I don't know if you got my last private message.? I sent a log file of a recent guide experiance.? The last time, a year ago, you mentioned I had a huge periodic error on a chart you looked at.? I think at 492 seconds.? I upgraded the G9-> a G811.? In any case...? To answer your questions...
1, how would describe your current guiding?
? I am able to guide, but trying to improve my performance.? I have questions on some of the settings like hysterisis and agressiveness, as well as only guiding on one axis.? If I do guide on one axis, should I overweight the other so that the load is always on the gear tooth face, so no backlash.? Maybe this is a varient of guidign on 2 axis to elinate dec backlash.? ?The last time I did an extensive test, I did not have a good polar alignment.? I sent you this log yesterday wondering if you knew of a way to gleen pk-pk of he new g811 upgrade.?? My email is c172jeff@... for a zoom meeting.Regards,
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I just completed the initial setup of the Gemini on my new G811. I shut it off and then later turned the system back on. I tried touching Cold Start and nothing happened. After a few more tries the screen changed languages (German in case anyone's interested). Nothing happened here, either. I rebooted a few more times with the same results. Up to this point everything seemed to be working perfectly. So WTF?
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Re: What's wrong with this mount? Help please .
Arun
you don't have to wait for that - you can use the baseline guiding outline I posted to this thread, complete that and then upload to the PHD Forums
Brian
That looks a lot like my graph. I want more as well. Hopefully the guiding workshop will discuss whether and how this is possible.
-- Brian?
Brian Valente portfolio
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Re: What's wrong with this mount? Help please .
That looks a lot like my graph. I want more as well. Hopefully the guiding workshop will discuss whether and how this is possible.
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Re: remote power on - what do you use
Not sure what all you are trying to power on Brian but recently I started using the Kasa wifi power strip over home wifi:
Each outlet can be controlled by a button on the phone app, but haven't set it up for desktop/laptop yet (and am not sure how to do so). Since I have multiple AC powered adapters for mount, camera, dew heater, etc. I can turn each one on or off at will.?
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On Thu, May 21, 2020 at 08:38 PM, Timothy Campbell wrote:
Hi Paul,
?
In addition to TCP port 80, the Gemini listens on both UDP port 4030 and TCP port 4030. ?
?
Clear Skies,
Tim
Hi Tim, I should've been clearer: Gemini.NET ASCOM driver uses HTTP protocol over port 80, or UDP protocol over port 11110 (by default) Regards, ? -Paul
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Hi Paul,
In addition to TCP port 80, the Gemini listens on both UDP port 4030 and TCP port 4030. ?
Clear Skies, Tim
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On May 21, 2020, at 8:25 PM, Paul Kanevsky < yh@...> wrote:
On Thu, May 21, 2020 at 11:33 AM, Brian Valente wrote:
Paul
?
when connecting via TCP (vs UDP) is it using the 4030 port (or whatever port is specified in the gemini setup)? or is it using http for something like a rest protocol?
?
Hi Brian, Gemini's TCP protocol is implemented over port 80 (http). HTTP protocol also adds some overhead compared to UDP (additional headers and parsing that has to occur with each request) Regards, ? ? ? -Paul
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Re: Gemini II battery replacement
Jamie,? It¡¯s a good guess you need to reset time (UT), location, etc., and the correct mount type (!). I really never had Losmandy issues with fresh batteries (~quarterly) and CORRECT parameters. HTH. ?Dean
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On May 21, 2020, at 1:48 PM, Jamie Amendolagine <jamie.amendolagine@...> wrote:
?OK, so I was advised to replace the battery on my Gemini II, and found the replacement instructions to be pretty scary.?
"Also After replacing the battery, Power on the Gemini-2 and set the time and date. Failure to do so could cause the processor to draw too much power from the battery and might result in processor damage."
This looks to be a pretty old site, is there a better set of instructions for this??
Jamie
--
Dean
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The significant difference between TCP and UDP is guaranteed in order delivery of TCP.? if a UDP packet is lost on the network... it is not resent.? the string of UDP packets continue.. Also UDP packets can be delivered out of order (this seldom happens).
TCP is a stream of data... if an IP packet is lost, the receiving side recognizes that data is missing and requests that it be retransmitted.? This takes time and the stream pauses until the missing data is available at the receiver.
So for something like a video stream... UDP data is the best.. most people would not even notice a single lost frame... but with TCP the video stream stops until the lost packet is recovered.? This is why there needs to be buffering for TCP.? But while a video stream can tolerate lost data,? you would not want a file transfer system to utilize UDP... you want the file received to be complete and in the right order.
From a data transfer perspective, the two are roughly equal.? MIke.??
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On Thu, May 21, 2020 at 11:33 AM, Brian Valente wrote:
Paul
?
when connecting via TCP (vs UDP) is it using the 4030 port (or whatever port is specified in the gemini setup)? or is it using http for something like a rest protocol?
?
Hi Brian, Gemini's TCP protocol is implemented over port 80 (http). HTTP protocol also adds some overhead compared to UDP (additional headers and parsing that has to occur with each request) Regards, ? ? ? -Paul
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Re: Gemini II battery replacement
Jamie, the new instructions are just replace the battery, I've done it, no more issues
It's just that simple.Every thing is working fine now even if the battery change for me was not nessesary.
P.S. be careful not to bend the little battery terminal on the top.
"HAPPY SKIES AND KEEP LOOKING UP"?
Best regards Deric
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Re: remote power on - what do you use
Hi Brian,
What about the typical 'Restore on power loss ==> Power On' setting that is in most bios's ?
I use that to auto power up my (genuine) NUC after plugging it in...
Otherwise, remote power control device such as WebControl's WebSwitch product provides inexpensive remote browser power control...
?
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Re: Gemini II battery replacement
Mine is something less than a year old gm811g so I should be good. I think I'll set the time and date any just to be safe.?
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Re: What's wrong with this mount? Help please .
Tonight it looks better than last time, but I want more.
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Re: Gemini II battery replacement
The (current) Gemini II these instructions are not necessary. You can put in the battery however you want
Brian
OK, so I was advised to replace the battery on my Gemini II, and found the replacement instructions to be pretty scary.?
"Also After replacing the battery, Power on the Gemini-2 and set the time and date. Failure to do so could cause the processor to draw too much power from the battery and might result in processor damage."
This looks to be a pretty old site, is there a better set of instructions for this??
Jamie
-- Brian?
Brian Valente portfolio
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Gemini II battery replacement
OK, so I was advised to replace the battery on my Gemini II, and found the replacement instructions to be pretty scary.?
"Also After replacing the battery, Power on the Gemini-2 and set the time and date. Failure to do so could cause the processor to draw too much power from the battery and might result in processor damage."
This looks to be a pretty old site, is there a better set of instructions for this??
Jamie
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The issue you encountered was probably not a ¡®network¡¯ issue per se. ?The reason for using UDP is because the Gemini has a more robust UDP stack as compared to its TCP stack (according to Rene). ?But this is not related to speed.
UDP has less overhead ¡ but at the expense of robustness/reliability. ?If, hypothetically, you could somehow have a network which is not capable of losing packets or having packets arrive out-of-order, then UDP would be a great choice. ?TCP was written to automatically manage these realities.?
There are quite a number of efficiencies built into TCP without a developer having to write any code¡ such as the Nagle algorithm (a sliding-window algorithm that deals with packet acknowledgement efficiencies), the ability to bulk-acknowledge, the ability to transmit ¡°jumbo¡± frames, or to dynamically segment (and re-combine) frames that need to be larger than the maximum segment size. ?UDP doesn¡¯t provide anything to make it ¡°robust¡± in that you don¡¯t really know if a packet arrived at the network destination. ?In UDP, this require writing more code resulting in more network traffic (basically there is no free lunch).
Something else to keep in mind (nothing to do with TCP or UDP) is that the twisted-pair ethernet cable is wired as a full-duplex cable. ?There is a wire pair for ¡°transmit¡± and a separate wire pair for ¡°receive¡±. ?A device doesn¡¯t have to stop transmitting packets to ¡°turn the connection around¡± to await response/acknowledgement packets. ?The speed of the network is vastly faster than the mechanical ability of the mount to respond ¡ª the network isn¡¯t the bottleneck.
I would use UDP with the mount¡ primarily because it is what Rene recommends based on the code running in the Gemini.?
Clear Skies, Tim
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I thought I read somewhere UDP was faster due to less overhead and therefore guiding benefited by the faster transmission of commands when using the ethernet. I have and still use ekos/indi/kstars on occasion. I had an issue with the scope taking off randomly. My issue was a little different in that is was ALWAYS associated with a plate solve and adjustment. Ekos would plate solve, determine the scope needed to move a couple hundred pixels, and send the scope to a random part of the sky, usually pointing straight down at the floor! I updated Gemini to the beta mentioned in the following thread and never saw it happen again. Again, my situation was a little different in that it was ALWAYS associated with a plate solve / readjustment but the symptoms sound eerily similar. Of course it is a beta firmware and there are lots of precautions you should pay attention to, but they are addressed in this and the associated threads.? ? /g/Losmandy_users/topic/32858271#63456
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remote power on - what do you use
so I have a need to remotely power on/off my system including the telescope-top computer
I'm curious what is everyone using nowadays to do this?
The computer (a lenovo NUC-style computer) doesn't power on when power is available, so i'll have?to figure out how to power that on as an additional step
-- Brian?
Brian Valente portfolio
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Just to confirm:
My 492 cables at home are the Data type that George kindly just documented.
Here are photos showing the wire colors are identical into both ends.
Hope this helps...
Michael
On Thu, May 21, 2020, 10:53 AM George Cushing < pinyachta@...> wrote: Modular cables have some of the worst nomenclature on the planet. Yes, a straight thru cable is also reversed in that the plug at one end has its locking tab up the other has it down. The is the only way you can end up with the plugs looking like this.
?
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Paul Kanevsky
Timothy Campbell
Jamie Amendolagine
Michael Herman