Date   

Re: Reflection in image

Emilio J. Robau, P.E.
 

Robert,

I have been fighting the same thing on my 12"GSO RC for years.   I have a truss system.   If you find a remedy, please let me know.  Recently I placed protostar flock on the tube portion of the scope to make it even darker, but I doubt it will help.  It seems to happen when my scope is pointed between 10 degrees and 30 or so degrees, and is less frequent when I am pointed more towards the zenith.  I think it also happens when there is a bright star nearby.


Re: Some APCC mis-information on Cloudy Nights

Karen Christen
 

Hello gentlemen,

 

First, welcome, Tom, to the Astro-Nuts.  This is a great group of people with extensive experience using AP mounts.  Their knowledge is tremendous.  First-time AP mount users are often overwhelmed, so don’t feel alone or hesitate to throw your questions out. 

 

Regarding your request for videos… it’s on the (very long) list of things to do.  We realize visual guides are helpful for many users and certainly expected by the younger generations.  Our delay is due to many other projects in the queue and the fact that none of us are skilled video makers.  Nevertheless, we will be working on this in the near future. 

 

Thank you to all our other members who are trying to help Tom. 

 

Wishing you all clear skies,

Karen

AP

 

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Bill Long
Sent: Saturday, September 25, 2021 5:00 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Some APCC mis-information on Cloudy Nights

 

Thats easy enough to do. Once you have everything connected and the mount powered on, you can use APJog (installs with the V2 Driver package) to connect and move the mount around. 

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Thomas Giannaccini <tgiann3@...>
Sent: Saturday, September 25, 2021 2:55 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Some APCC mis-information on Cloudy Nights

 

Thank you Bill, 

I think if I can get the mount to move via PC tonight I'll consider the day a success. Haha

 

Tom

 

On Sat, Sep 25, 2021 at 3:52 PM Bill Long <bill@...> wrote:

Backyard Nikon is super user friendly. Another good one is APT (Astrophotography Tool). I would go with the most user friendly package for now and worry about advanced features and stuff later.

 

As an aside, I tried PRISM and thought it was way overly complicated. I am sure its good once you get used to it, but for me it was too much.

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Thomas Giannaccini <tgiann3@...>
Sent: Saturday, September 25, 2021 2:49 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Some APCC mis-information on Cloudy Nights

 

Thank you Bill,

Yes, this helps. I just emailed Daleen about APCC and APPM so I'll wait to hear back. I believe Backyard Nikon allows this extra functionality you were speaking about; really the DSLR is just to limit what I have to learn right now.  An astro cam is in my near future but probably after an electronic focuser.

 

Thank you,

 

Tom

 

On Sat, Sep 25, 2021 at 3:40 PM Bill Long <bill@...> wrote:

You dont need that box in the first 3 photos. That is not provided with the mount anyhow and its intention is to convert physical serial devices to a USB output.  It is not necessary.

 

On the CP4, you see one USB and one Ethernet on the left side. That you plug into your computer. You can plug one or both of them in if you would like. Motor cable runs to the connector labeled motor. The encoder box under the RA axis has a cable that plugs into the port labeled encoder. The hand controller (if you have one) plugs into the port labeled keypad. The power plugs into the port labeled 12v DC. 

 

On your PC you install the following:

 

  1. ASCOM Platform: https://github.com/ASCOMInitiative/ASCOMPlatform/releases/download/v6.5SP1Release/ASCOMPlatform65SP1.exe
  2. AP V2 ASCOM Driver: Astro-Physics V2 ASCOM Driver and Tutorial Videos (gralak.com)

At this stage you have the basic stuff to connect your PC to the mount and software to the mount that uses ASCOM. You also have the platform installed so other ASCOM devices can work, such as focusers, cameras, filter wheels, etc.

 

The next step would be to install the software you want to use to control the mount and your imaging devices. That will vary, based on taste. Some common ones include:

  1. Starkeeper Voyager 
  2. NINA
  3. Sequence Generator Pro
  4. PRISM (which you said you already bought)

Since you said you will use a DSLR make sure the software package you install allows you to do that. Not all of them support DSLR cameras. Voyager for example does not, as there is no native DSLR support and I am not aware of any functional DSLR ASCOM drivers. Someone else may know better than me on that topic, as I do not use DSLR's for imaging.

 

You did mention you bought the mount used, so APCC Pro would require a license transfer from the previous owner to you. Depending on when the seller obtained APCC (or if they did at all) this experience will vary and you should contact Astro-Physics to sort that out. 

 

-Bill 

  1.  
  2.  

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Thomas Giannaccini <tgiann3@...>
Sent: Saturday, September 25, 2021 2:17 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Some APCC mis-information on Cloudy Nights

 

Hello All,

First, I want to thank everyone for helping me through my question on Park positions. As for the posts on Cloudy Nights…

So this 1100GTO w/ AE and CP4 is my first mount. I bought it from Ken. He drove 27 hours over 2 days to deliver it to me personally, and the price was fair.  So, I do own him a debt of gratitude for that. I believe that the initial aspects of the conversation on Cloudy Nights was just him trying to point me in what he thought was the right direction and including some of his personal experiences in those posts.

It is very obvious to me that we have some incredibly intelligent people both here and on Cloudy Nights. Those people often have various backgrounds which may make the process of setting up astro equipment much easier. It is also very easy to forget how difficult it was to first learn a concept or skill; especially if it happened a long time ago. But please remember, not everyone comes from a physics or computer science background. Personally, I am in healthcare.

 

I can see how an end user can end up with certain impressions of how astro equipment works based on their experiences. It can take a great deal of research and trial and error to get these things working right, and often its done without someone next to you guiding you through it. I can understand the Astro-Physics community being upset about how certain things were worded. There may be some frustration involved on the part of the poster. So, please, when educational materials are being developed, please take this into consideration. Videos should be given serious consideration.  Some of us do need to be walked through from start to finish because we lack pre-requisite background. I do know Ray has some videos and they are on my near future to-do list. I think they were out of my grasp until now.

I do have decent computer skills and I would say my general trouble shooting skills are pretty darn good. When it comes to connecting astro equipment of any sort to a computer this is a completely new topic for me.

The way I understand it is that ASCOM is the language or platform through which all astro equipment communicates. Easy enough. There are drivers one needs to make various equipment operate. Got that as well. What gets muddy very quickly is how an end user goes about setting up the communication between parts. My father was a network engineer before the birth of mainstream internet and I don’t ask him about this because it strikes me as a special use of common items where the exact details of how the network and software connections are made must be accurate.   I can see very easily how a new user would struggle here.

Com Ports. A place where data must pass through. Virtual ports are different from physical ports. That’s about as much as I understand. When I look at this piece of equipment, I am very puzzled:

 

 

 

 

 

 

I see A USB 2.0A/B port and 4 serial ports. Serial ports have what look to be Ethernet to Serial Adapters.  How you would use it and why you would use it was an absolute mystery to me before Ken’s post on CN; especially when you look at the back of the CP4. 

 

 

 

 

There is already an ethernet and USB 2.0 A/B port on the CP4. Is the USB converter just to add additional ports?

 

For now, my plan is just to control the 1100 with a peer to peer ethernet connection from my PC.  When we are in the ASCOM settings, COM 1 and such…what exactly do those refer to? If I use a peer to peer ethernet connection, what setting do I use?

 

I’m sorry for the long email, I felt it was best to keep this all in one piece.

 

Thank you,

 

Tom

 

 

On Sat, Sep 25, 2021 at 12:16 PM Ray Gralak <iogroups@...> wrote:

Thanks, Bill!

-Ray

> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
> Sent: Saturday, September 25, 2021 11:13 AM
> To: main@ap-gto.groups.io
> Subject: Re: [ap-gto] Some APCC mis-information on Cloudy Nights
>
> Done deal.
>
> I will keep an eye on that thread and chime in more if he tries to mislead people further.
>
> HasAnyoneSeenMyNebula uses this group as well. Please do not listen to Ken, he has no idea what he is
> talking about.
>
>
> ________________________________
>
> From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Ray Gralak
> <iogroups@...>
> Sent: Saturday, September 25, 2021 10:57 AM
> To: main@ap-gto.groups.io <main@ap-gto.groups.io>
> Subject: [ap-gto] Some APCC mis-information on Cloudy Nights
>
> Hi all,
>
> It would be appreciated if someone has time to post a response to the incorrect information on Cloudy Nights
> about APCC's Virtual Ports and APPM at this link:
>
> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cloudynights.com%2Ftopic%2F79
> 0334-has-anyone-used-prism-to-run-an-ap-1100-gto-from-a-
> pc%2F%3Fp%3D11386165&amp;data=04%7C01%7C%7C619444cd2b544de63c1908d9804e0441%7C84df9e7
> fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637681894831878711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoi
> MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=%2F0y60TThJ4m
> Zyf%2B2D3gJYVqbnCkkqDTuOtqA0tyqlTQ%3D&amp;reserved=0
>
> KennyRichmond (his CN handle) wrote this:
> > APCC Pro can and will set up "virtual" com ports that I found to be worthless.
>
> Then this:
> >Okay, well...assuming you read the APCC manual (start at pgs. 99-101), you don't need virtual serial ports
> > to connect to SKYX or Pulse Guide.  Just go through Ascom as you did before APCC.
>
> The AP V2 ASCOM driver uses the virtual COM ports to communicate with APCC. In fact, the first two virtual
> COM ports allow for TWO instances of the AP V2 ASCOM driver. One is created for applications that run
> under the regular user account, and the second is created for client applications that are run "as
> administrator". Both instances of the AP V2 ASCOM driver can be active simultaneously because APCC
> multiplexes their requests.
>
> And this is also incorrect:
> > Virtual Ports start at Com 21, or better yet, Com 31.
>
> This is not true. Virtual COM ports can start at COM1 and go up from there if there is no COM1 on the
> computer already. Generally, all unused COM ports from COM1 to COM256 are available in the virtual port
> config's drop down list.
>
> > Point mapping for the purpose of tracking rate calibration is far from perfect.  It may be fun for the
> > stalwarts who obsess over unguided astrophotography, but all of the tinkering in Dec and RA required
> > is seemingly pointless (in my humble estimation) when an on-axis guider achieves the same result with
> > 60 seconds of calibration effort.
>
> I have no idea what he means by "tinkering in RA and Dec"? Maybe setting the RA and Dec ranges in APPM
> with the sliders?
>
> -Ray
>
>
>
>
>
>
>
>
>






--
CN: HasAnyoneSeenMyNeblua


--
CN: HasAnyoneSeenMyNeblua


--
CN: HasAnyoneSeenMyNeblua


--
Karen Christen
Astro-Physics


Re: Shipping box and foam for Mach1

Karen Christen
 

Yes, we do. 

Karen

AP

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Patrick Spencer
Sent: Sunday, September 26, 2021 12:48 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Shipping box and foam for Mach1

 

Does anyone know if AP still sells boxes and foam that can be used to ship a Mach 1? I know there was a recent discussion about buying boxes for the 1100GTO, but I'm wondering about the Mach1, since it's no longer in production?

Thanks,

Patrick Spencer


--
Karen Christen
Astro-Physics


Re: What does GTO stand for in A-P mounts (i.e. A-P1100GTO)

Tom Blahovici
 

Actually, the true story is that 20 years or so ago, the plaques for the first goto mount were sent to the paint shop. When it returned, it was seen they accidentally dropped an O. They stuck with it.


Re: Reflection in image

Roland Christen
 

-----Original Message-----
From: Robert Chozick via groups.io <rchozick@...>
To: main@ap-gto.groups.io
Sent: Mon, Sep 27, 2021 10:24 am
Subject: Re: [ap-gto] Reflection in image

Thanks. It is an 8 inch RC. 

Robert 


On Sep 27, 2021, at 10:10 AM, Roland Christen via groups.io <chris1011@...> wrote:


You don't say what scope that is. Looks like a light leak around a secondary baffle.

Rolando

-----Original Message-----
From: Robert Chozick via groups.io <rchozick@...>
To: main@ap-gto.groups.io
Sent: Sun, Sep 26, 2021 2:09 pm
Subject: [ap-gto] Reflection in image

What would cause the refections in this image?  It has been suggested to be a reflection in one of the t-thread  or 2 inch extensions.  I also place a 2 inch UV/IR filter at the end of the AP CCDT67 tele compressor.  The order is ZWO 2600 color camera + t-thread extensions  + t-thread to 2 inch adapter + 2 inch extensions + CCDT67 + 2 inch Baader UV/IR filter.   I space it to be a .67 reduction factor.  Any help diagnosing this would be appreciated.

https://pbase.com/rchozick/image/171993637

Image cropped without reflection:


Robert

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


PA Error what is acceptable for 530mm FL & 2.1arc sec/pix

Shailesh Trivedi
 

Hi,

I ran a 290 point APPM model last Friday and am having trouble centering to a target (I am off by several degrees). Ray suggested "Plate Solve and Recal" in APPM, but I noticed something odd in looking at the Model numbers. The polar elevation is -600 something arc seconds and the polar azimuth is -300 something, see attached.

I know that APPM is expected to correct for PA errors, but for a 530mm FL and image scale of 2.1 arc sec per pixel, is this error too much?

I prefer to dial it down to less than 10 arc sec, but the night I did my PA with PEMPRO, I was chasing the seeing in suburban Sacramento.



Please shed light. thanks.

Shailesh


Re: Reflection in image

Robert Chozick <rchozick@...>
 

Thanks. It is an 8 inch RC. 

Robert 


On Sep 27, 2021, at 10:10 AM, Roland Christen via groups.io <chris1011@...> wrote:


You don't say what scope that is. Looks like a light leak around a secondary baffle.

Rolando

-----Original Message-----
From: Robert Chozick via groups.io <rchozick@...>
To: main@ap-gto.groups.io
Sent: Sun, Sep 26, 2021 2:09 pm
Subject: [ap-gto] Reflection in image

What would cause the refections in this image?  It has been suggested to be a reflection in one of the t-thread  or 2 inch extensions.  I also place a 2 inch UV/IR filter at the end of the AP CCDT67 tele compressor.  The order is ZWO 2600 color camera + t-thread extensions  + t-thread to 2 inch adapter + 2 inch extensions + CCDT67 + 2 inch Baader UV/IR filter.   I space it to be a .67 reduction factor.  Any help diagnosing this would be appreciated.

https://pbase.com/rchozick/image/171993637

Image cropped without reflection:


Robert

--
Roland Christen
Astro-Physics


Re: Reflection in image

Roland Christen
 

You don't say what scope that is. Looks like a light leak around a secondary baffle.

Rolando

-----Original Message-----
From: Robert Chozick via groups.io <rchozick@...>
To: main@ap-gto.groups.io
Sent: Sun, Sep 26, 2021 2:09 pm
Subject: [ap-gto] Reflection in image

What would cause the refections in this image?  It has been suggested to be a reflection in one of the t-thread  or 2 inch extensions.  I also place a 2 inch UV/IR filter at the end of the AP CCDT67 tele compressor.  The order is ZWO 2600 color camera + t-thread extensions  + t-thread to 2 inch adapter + 2 inch extensions + CCDT67 + 2 inch Baader UV/IR filter.   I space it to be a .67 reduction factor.  Any help diagnosing this would be appreciated.

https://pbase.com/rchozick/image/171993637

Image cropped without reflection:


Robert

--
Roland Christen
Astro-Physics


Re: Dumb request

Eric Weiner
 

Jim,

Tak makes a slew of T-mounts:


Re: APCC Temperature readings

Dale Ghent
 

Install and use the PPB's Observing Conditions driver (available at https://pegasusastro.com/downloads/) and you can use that as a source of temperature and humidity in APCC. You need to run the PPB's console app at the same tme for the driver to be able to read the temperature and humidity data.

On Sep 27, 2021, at 10:51, S Berrada <sberrada19@gmail.com> wrote:

Hi

I expect to receive my AP1100 within the next month.
I am doing some reading to prepare.

APCC pointing model requires temperature.
I have 2 devices which provide temperature: a) Pegasus PPB; b) Optec Focuser

My question is whether APCC can read these temperatures.

I know that there are devices like mgbox, but I a, trying to avoid adding another device.

Please let me know if this can be done.

As well, there are other environmental readings such as RH and pressure but not sure how important these are.

Thanks
Sam


Re: Pickering's (or Fleming's) Triangle

Roland Christen
 

Gorgeous.

Rolando



-----Original Message-----
From: Glenn <public@...>
To: main@ap-gto.groups.io
Sent: Sat, Sep 25, 2021 7:25 pm
Subject: [ap-gto] Pickering's (or Fleming's) Triangle

Any part of the Cygnus loop is a treat for visual astronomers and astrophotographers alike. The many intricacies of its structure make it unique in the night sky.

I shot Pickering's Triangle through narrowband filters with the intent of producing a Hubble palette (SHO) image. However, the SII signal was largely superimposed on the Ha and didn't add anything useful, so I left out the SII and made a bicolor image with the other two filters. Here's the link:

https://astrob.in/lyde7q/B/

Thanks for looking. 

Glenn Diekmann

--
Roland Christen
Astro-Physics


APCC Temperature readings

S Berrada
 

Hi

I expect to receive my AP1100 within the next month.
I am doing some reading to prepare.

APCC pointing model requires temperature.
I have 2 devices which provide temperature: a) Pegasus PPB; b) Optec Focuser 

My question is whether APCC can read these temperatures.

I know that there are devices like mgbox, but I a, trying to avoid adding another device.

Please let me know if this can be done.

As well, there are other environmental readings such as RH and pressure but not sure how important these are.

Thanks
Sam 


Re: APCC feature request - Get time from mount

Dale Ghent
 

System privileges aside, time synchronization is not as simple as taking a raw NMEA sentence from a GPS or (worse) an undisciplined source, and scribbling whatever it says into the system clock without any further consideration. It's a complex topic and really is best left up to apps that are designed for that task.

Using a mount's CP, via the ASCOM driver and then APCC on top of that and all the serial, OS, and COM glue in between those components, doesn't make me feel like pretending that the mount is a disciplined time source is something that'll be accurate. For one, I don't think the CP even has a hardware RTC (there's no battery to change out in it) or, if it does, if it is temperature compensated.

That said, using the CP as a time source could be considered if a future CP version had some hardware and software additions that allow it to be a proper one instead of a hackish, ad hoc one. A "CP-next" could have:

* It would have a hardware interface (GPIO or RS232/TTL) that can interface with a GPS receiver either built-in or accessory; the antenna location is separate and largely site-specific consideration. Obviously having the antenna down on the CP itself is no good if the thing is sitting under a dome.

* A hardware RTC that is also battery-backed so that it can keep time while unpowered. This would reduce the initialization time of a connected GPS on a cold boot.

* It would run an embedded OS (already exists on the CP4/5) that can operate a time service which properly disciplines its own local clock and run a NTP/SNTP service so that any system that's connected via ethernet or wifi to use it as a stratum 1 time server.

The time service itself would know how to handle GPS initialization and syncing. I would not offer this over a PC's USB/serial connection to the CP simply because the code and mechanisms needed to address complexities of time sync over those many moving parts would need to be introduced; and these are things that the local OS's NTP client would already have built-in. The time service being NTP over the CP's ethernet/wifi would also make it available to any modern OS and system arch; something that could not be done if exposed only by the ASCOM driver or APCC.

But, after all that effort and rigamarole, one could still just have the GPS connected to their PC and a proper app such as NMEAtime2 to discipline the clock. The existing APCC/A-P ASCOM driver options can write the time to the CP during initialization. This is what I do currently and it works *just fine*. The ublox GPS dongle that I use is stuffed into a port on my telescope-mounted USB hub. So I don't really see a compelling advantage for the mount to be a time source as there still needs to be a GPS receiver somewhere in the mix; and right now the best software for GPS-based clock discipline is available for any PC and modern OS (NMEAtime2 on Windows, and any of the menu of NTP daemons/services for *NIX OSes.)

On Sep 27, 2021, at 08:37, W Hilmo <y.groups@hilmo.net> wrote:

I think that I understand the user's scenario.

They have initialized the mount from a device with accurate time. In my case, I sometimes initialize my mount from Luminos on my phone which has accurate time.

They then connect the computer to the mount. Having spent most of my working career as a software engineer, I have pretty much zero trust in the real time clock on most computers. If they are continuously connected to the internet and syncing to a time source, then they are pretty good, and they tend to stay pretty accurate while running. When you power them down, though, they lose their time information and have to retrieve it from the real time clock when they boot. Partly because I'm a bit OCD, and partly because I do a daytime polar alignment, I want the most accurate time and location information as accurate as possible. Computer real time clocks can drift a noticeable amount over a few days.

The solution that was requested here is to have either the ASCOM driver or APCC able to get the time from the mount and update the PC's time. I would love a similar feature where APCC can use GPS time to update the computer clock. I already have APCC connected to a GPS receiver, so that it can get location information. And APCC can show me the GPS time - but it cannot update the PC clock. As I mentioned in an earlier reply, I believe that this is because updating the PC clock requires administrator privilege, which is not available to APCC unless you "run as administrator", and that is strongly discouraged.

There are workaround for this to be sure. I have multiple, accurate time sources. My watch syncs nightly to a time source. I could just read the time from the watch and enter it manually, for example. What I've chosen to do is to connect a second GPS receiver to my computer. I then have a service that I installed that has sufficient privileges to periodically update the PC time.

It would be convenient for APCC to offer this feature. I could then remove the service, and one of the GPS receivers, from my imaging computer. But I understand why it may not be possible (privileges).

-----Original Message-----
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Mike Dodd
Sent: Sunday, September 26, 2021 8:20 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC feature request - Get time from mount

On 9/26/2021 10:51 PM, Brent Boshart wrote:
...The original poster was referring to a circumstance where the
computer is not connected to a network (internet).
NEVER?

If the PC or laptop can be connected to a network every few days (maybe with a wi-fi dongle), the network time sync software could accurately set it then. Most PC clocks are good enough to maintain fairly accurate time over several days.

Or, as The he said, a GPS dongle would do the job. They're inexpensive.

Worst case: Set the PC clock manually by watching an analog clock on a cell phone, and clicking the PC clock button when the cell clock second hand passes 12.

--- Mike













Dumb request

thefamily90 Phillips
 

I am primarily a higher resolution planetary and Lunar Imager.
I do some wide field viewing just for fun. I have a feeling that that great comet is on the way and I would like to be prepared for it. No, it hasn’t been discovered yet.

All I am interested in doing is attaching my Nikon DSLR to an FSQ 85 on my Mach 1 mount and doing a few 30 second exposures which I can stock in Registax.

If anyone has any information and/or thoughts please email me privately.
Thefamily90@...

JimP 


Re: Off Topic-NUC Computer

Clayton Yendrey
 
Edited

Overpriced for what you get and what you get isn't that great weather resistant wise.  I have a 10th gen NUC with 512gb dr which I'm glad I got.  I believe the 11th gen are available with a 1tb drive, but you can upgrade the onboard drive as long as you can 'clone' the existing to the new drive for the OS/licensing/etc.

The Intel CPU's generate heat - quite a bit so I'm of the opinion that the fanless case is going to shorten the life of the unit or lead to reliability issues if you have any hot weather at all.  If you're worried about weather I wouldn't be (mine is velcroed to the side of the pier f(it has the fan) that has a Telegizmo solar tarp for a cover (I do keep a large desiccant pack under the tarp).  Being in an enclosed observatory should be a none issue unless it is open when it rains and in that case your mount is the more likely and more expensive casualty.  The thing generates enough heat that I'm not too concerned (and don't think you should be) about relative humidity bothering it much while its in operation.  I was going to shoot some new calibration frames and so just put the cover on but left PC/UPBv2/etc powered up during the day.  The focuser sensor said it reached 130dgf inside the cover before I realized what heat from the NUC was doing and shut everything down.  It took over an hour for the OTA to cool back off to ambient, so yea - the little miniPCs are a great little space heater.

If you really want to set up the NUC to be environment proofed, get a NEC 4 rated plastic enclosure with a hinged door.  Have it deep enough to mount a PC case fan or smaller (maybe 90mm) and large enough to mount the NUC, power supply, and provide cord management.  I think a 12x12x4 would be sufficient but don't remember the standard sizes any longer.  Cut a  penetration in the side to mount the fan and an exhaust 'grill' along with a fan cover, and use a circular saw to cut penetrations for the USB, power cables/etc.  It can be mounted to any flat surface, vertical or horizontal and will provide protection for the NUC even from direct exposure to rain if the observatory were to be left open.  The PC fan will insure plenty of cooling air to insure reliability/longevity of the NUC and you can place a desiccant pack in it to cover those times when everything is powered down.  Plus you should save about a third the cost of the unit you linked to.


Re: What does GTO stand for in A-P mounts (i.e. A-P1100GTO)

fernandorivera3
 

What about:
Great
To
Own??

Fernando


Re: What does GTO stand for in A-P mounts (i.e. A-P1100GTO)

Michael Kelly
 

God thats Outstanding!

On Monday, September 27, 2021, 06:40:48 AM EDT, Christopher Erickson <christopher.k.erickson@...> wrote:


GTO -> Go TO infinity, and beyond!

-Christopher "insert silliness here" Erickson
   

On Mon, Sep 27, 2021, 12:24 PM Chris White <chris.white@...> wrote:
Gran Turismo Omologato?


Re: APCC feature request - Get time from mount

W Hilmo
 

I think that I understand the user's scenario.

They have initialized the mount from a device with accurate time. In my case, I sometimes initialize my mount from Luminos on my phone which has accurate time.

They then connect the computer to the mount. Having spent most of my working career as a software engineer, I have pretty much zero trust in the real time clock on most computers. If they are continuously connected to the internet and syncing to a time source, then they are pretty good, and they tend to stay pretty accurate while running. When you power them down, though, they lose their time information and have to retrieve it from the real time clock when they boot. Partly because I'm a bit OCD, and partly because I do a daytime polar alignment, I want the most accurate time and location information as accurate as possible. Computer real time clocks can drift a noticeable amount over a few days.

The solution that was requested here is to have either the ASCOM driver or APCC able to get the time from the mount and update the PC's time. I would love a similar feature where APCC can use GPS time to update the computer clock. I already have APCC connected to a GPS receiver, so that it can get location information. And APCC can show me the GPS time - but it cannot update the PC clock. As I mentioned in an earlier reply, I believe that this is because updating the PC clock requires administrator privilege, which is not available to APCC unless you "run as administrator", and that is strongly discouraged.

There are workaround for this to be sure. I have multiple, accurate time sources. My watch syncs nightly to a time source. I could just read the time from the watch and enter it manually, for example. What I've chosen to do is to connect a second GPS receiver to my computer. I then have a service that I installed that has sufficient privileges to periodically update the PC time.

It would be convenient for APCC to offer this feature. I could then remove the service, and one of the GPS receivers, from my imaging computer. But I understand why it may not be possible (privileges).

-----Original Message-----
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Mike Dodd
Sent: Sunday, September 26, 2021 8:20 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC feature request - Get time from mount

On 9/26/2021 10:51 PM, Brent Boshart wrote:
...The original poster was referring to a circumstance where the
computer is not connected to a network (internet).
NEVER?

If the PC or laptop can be connected to a network every few days (maybe with a wi-fi dongle), the network time sync software could accurately set it then. Most PC clocks are good enough to maintain fairly accurate time over several days.

Or, as The he said, a GPS dongle would do the job. They're inexpensive.

Worst case: Set the PC clock manually by watching an analog clock on a cell phone, and clicking the PC clock button when the cell clock second hand passes 12.

--- Mike


Re: What does GTO stand for in A-P mounts (i.e. A-P1100GTO)

Christopher Erickson
 

GTO -> Go TO infinity, and beyond!

-Christopher "insert silliness here" Erickson
   

On Mon, Sep 27, 2021, 12:24 PM Chris White <chris.white@...> wrote:
Gran Turismo Omologato?


Re: What does GTO stand for in A-P mounts (i.e. A-P1100GTO)

Chris White
 

Gran Turismo Omologato?

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