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Re: APCC shows Altitude at 0 in Park 3
Is there a way of hooking a GPS module into the Hand pad to acquire the coordinates
toggle quoted messageShow quoted text
TJF Mobile
On Mar 13, 2021, at 12:31, Wayne Hixson via groups.io <wayneh9026=yahoo.com@groups.io> wrote:
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Re: Need to Invert PE curve before loading into Mach1GTO?
Hi Keith >>> I didn't have time to load the curve last night and check, so does the Mach1GTO need the PE curve to be inverted before loading or not? you have to test that by loading the curve and running it to see the results, and then based on the results, you invert it or not. Brian
On Sat, Mar 13, 2021 at 9:40 AM Keith Egger <eggerk@...> wrote: Having finished my re-greasing, which involved removing the motors, I had to redo my PEC. I ran 6 worm cycles in PEMPro last night and generated a PE curve this morning. In the workflow PEMPro says to load the curve, then run a couple of cycles and if the PE is doubled, Invert the curve and reload. I didn't have time to load the curve last night and check, so does the Mach1GTO need the PE curve to be inverted before loading or not? --
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Re: Need to Invert PE curve before loading into Mach1GTO?
Keith Egger
Thanks!
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Re: Need to Invert PE curve before loading into Mach1GTO?
Ray Gralak
Having finished my re-greasing, which involved removing the motors, I had to redo my PEC. I ran 6 worm cycles inIf you run PEMPro's calibration wizard (as directed in the instructions) just before acquiring data you should not need to invert the curve. -Ray -----Original Message-----
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Need to Invert PE curve before loading into Mach1GTO?
Keith Egger
Having finished my re-greasing, which involved removing the motors, I had to redo my PEC. I ran 6 worm cycles in PEMPro last night and generated a PE curve this morning. In the workflow PEMPro says to load the curve, then run a couple of cycles and if the PE is doubled, Invert the curve and reload. I didn't have time to load the curve last night and check, so does the Mach1GTO need the PE curve to be inverted before loading or not?
Another question, am I correct that re-meshing the worm gear doesn't require redoing the PEC? Does re-meshing have any effect on the periodic error at all, as in increasing or decreasing? thanks, Keith
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Re: APCC shows Altitude at 0 in Park 3
Wayne Hixson
Glad it was easy to rectify. Later today I’m going to enter my Home coordinates in the keypad!
toggle quoted messageShow quoted text
Thanks again Wayne
On Mar 13, 2021, at 9:23 AM, Ray Gralak <iogroups@siriusimaging.com> wrote:
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Re: APCC shows Altitude at 0 in Park 3
Ray Gralak
Hi Wayne,
I assume it was just behaving as expected and the APCC values don’t override the keypad values when it’s set toYes, if the keypad initializes the mount, then APCC will not initialize the mount, so your Mach2 continues to use the keypad's Lat/Long values. Once Lat/Long has been set, you have to power-cycle the mount to change it. -Ray -----Original Message-----
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Re: Counter weight up slew vs. continuing past the meridian, any real differences?
Ray Gralak
Earlier this week it was mentioned thatAPCC has a variety of meridian limit configuration settings. When setup appropriately, counterweight-up slews within APCC's meridian limits will not do safety slews, and thus do not result in extra time in SGPro. However, if SGPro issues a move outside of the meridian limits then a pier flip will occur. -Ray -----Original Message-----
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Re: APCC shows Altitude at 0 in Park 3
Wayne Hixson
Hi guys! Tried that several times and no go, but my subconscious evidently worked on the problem in my sleep. First thing when I got up I checked the hand controller and it was as set to Auto Connect On and the site information was set to Lat and Long 00 00 00. I changed to Connect EXT and power cycled. Then opened APCC. For a split second, ALT went to 0, but then set to the correct value equal to my latitude.Yay! But now it’s cloudy!!
I assume it was just behaving as expected and the APCC values don’t override the keypad values when it’s set to auto connect to ON? I suspect I hadn’t run into this before because my keypad values were all correct? Wayne
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Re: Counter weight up slew vs. continuing past the meridian, any real differences?
Hi,
IMHO there is no difference. I don't use APCC/APMM, but just use SGP and set any required meridian delay in the V2 driver. For me the decision is determined by what the starting position of my target is and how long I want to image it. So, if I have a target
within 3 hours east of the meridian and want to image it for say 8 hours, then I'll set the meridian delay such that I start CW up and finish CW down. However, if the target is 5 hours east of the meridian and I want to image for 8 hours, then the reverse
is true and I'll start CW down and finish CW up. I've never encountered any issues with slow slews, or back and forth sides, as plate solving runs. Of course, I do need to check that I won't get any pier crashes and I find it easier to monitor that with CW
up at the start, knowing that if I'm good there then very likely to be good after all the way through and past the meridian.
Best regards,
Geof
From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of skester@... <skester@...>
Sent: 13 March 2021 17:02 To: main@ap-gto.groups.io <main@ap-gto.groups.io> Subject: [ap-gto] Counter weight up slew vs. continuing past the meridian, any real differences? I've seen many comments about the ability of AP mounts to slew to a counterweight up position with the scope on the east side, so that you can avoid the flip and continue west. Assuming I want to track the target from -3hrs to +3hrs of the meridian, how
if at all is this different to starting with a normal slew with the scope on the west side, and ending in the counter weight up position (assuming clearance of course)? Earlier this week it was mentioned that due to how SGP commands the mount during a plate
solve/center, starting counter weight up invokes the safety slew thus making very small adjustments quit slow. It would seem a solution would be to just reverse the process and end rather than start counter weight up. Am I missing something here?
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Counter weight up slew vs. continuing past the meridian, any real differences?
skester@...
I've seen many comments about the ability of AP mounts to slew to a counterweight up position with the scope on the east side, so that you can avoid the flip and continue west. Assuming I want to track the target from -3hrs to +3hrs of the meridian, how if at all is this different to starting with a normal slew with the scope on the west side, and ending in the counter weight up position (assuming clearance of course)? Earlier this week it was mentioned that due to how SGP commands the mount during a plate solve/center, starting counter weight up invokes the safety slew thus making very small adjustments quit slow. It would seem a solution would be to just reverse the process and end rather than start counter weight up. Am I missing something here?
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Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)
Roland Christen
We had a giant one up on the wall in the math lecture room at the Rochester Institute of Technology. It was used to teach incoming engineering students (like myself).
Rolando
-----Original Message-----
From: Karen Christen <karen@...> To: main@ap-gto.groups.io <main@ap-gto.groups.io> Sent: Sat, Mar 13, 2021 10:34 am Subject: Re: [ap-gto] Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers) This whole topic has been hilarious. Barry wins.
Karen
AP
From: main@ap-gto.groups.io <main@ap-gto.groups.io>
On Behalf Of Barry Megdal
Sent: Friday, March 12, 2021 8:21 PM To: main@ap-gto.groups.io Subject: Re: [ap-gto] Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers) Yes – that is a 6-foot slide rule on the wall. Couldn’t resist buying it years ago at a garage sale. These used to hang on the blackboard in my high school chemistry class so they could teach us how to use them.
And my new Mach2 in the foreground just to make the photo appropriate for this forum
J
 Dr. Barry Megdal
President
Shb Instruments, Inc.
19215 Parthenia St. Suite A
Northridge, CA 91324
(818) 773-2000 (818)773-2005 fax
Faculty (retired)
Dept. of Electrical Engineering
Caltech
-- Karen Christen Astro-Physics -- Roland Christen Astro-Physics
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Re: Meridian Limits in APCC
#APCC
Ray Gralak
Hi David,
Please make sure you have installed the latest drivers for the MGBoxV2 and that the Device DataSource is set to ASCOM as in this screenshot:
-Ray
> -----Original Message----- > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of David Johnson > Sent: Saturday, March 13, 2021 8:28 AM > To: main@ap-gto.groups.io > Subject: [ap-gto] Meridian Limits in APCC #APCC > > I set up the meridian limits using APCC last night, and I have to say that it’s a very useful and easy-to-do process. It’s > one of those things that you can read about, but you really need to do it to completely understand it. One interesting > thing I need to keep in mind is, even with the same equipment, the meridian limits can be different. For example, how > my filter wheel is rotated has an effect on the pier clearance, so I’m trying to be reasonably conservative about placing > the limits. Same with how my focuser is rotated, since the controls do stick out from the line of the scope. Anyway, it > is a nice “cloudy nights” activity.
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Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)
This whole topic has been hilarious. Barry wins. Karen AP
From: main@ap-gto.groups.io <main@ap-gto.groups.io>
On Behalf Of Barry Megdal
Sent: Friday, March 12, 2021 8:21 PM To: main@ap-gto.groups.io Subject: Re: [ap-gto] Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)
Yes – that is a 6-foot slide rule on the wall. Couldn’t resist buying it years ago at a garage sale. These used to hang on the blackboard in my high school chemistry class so they could teach us how to use them.
And my new Mach2 in the foreground just to make the photo appropriate for this forum J
Dr. Barry Megdal
President Shb Instruments, Inc. 19215 Parthenia St. Suite A Northridge, CA 91324 (818) 773-2000 (818)773-2005 fax
Faculty (retired) Dept. of Electrical Engineering Caltech
-- Karen Christen Astro-Physics
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Meridian Limits in APCC
#APCC
David Johnson
I set up the meridian limits using APCC last night, and I have to say that it’s a very useful and easy-to-do process. It’s one of those things that you can read about, but you really need to do it to completely understand it. One interesting thing I need to keep in mind is, even with the same equipment, the meridian limits can be different. For example, how my filter wheel is rotated has an effect on the pier clearance, so I’m trying to be reasonably conservative about placing the limits. Same with how my focuser is rotated, since the controls do stick out from the line of the scope. Anyway, it is a nice “cloudy nights” activity.
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David Johnson
I’ve used my MGBoxV2 with APCC on my old computer with no problem, but I’m switching to a PrimaLuceLab Eagle 4, and I have a problem getting the MGBoxV2 connected. I’m pretty sure I’ve installed all the proper drivers. The error message is attached. Any help would be appreciated. Thanks.
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Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)
Joe Zeglinski
Since I couldn’t find an original “wall-mount”
slipstick, I just remembered an old Plan-B, of making my own. We now
have the latest PC technology to do it very easily as a home DIY. The 6-foot, or
preferably easier to handle a 4-footer, can be “duplicated”. I once
made an “Octal” Circular slide rule, simply using my engineering drafting tools,
after I graduated and started in the computer field. Computer technology now
makes it far easier to do.
Just scan an existing slide rule, at high resolution,
section by section, and print the (coloured) sheets on say a laser printer, or
have it done at a print shop on a blueprint-sized printer. Then just glue
the printed sheets unto a backing of plywood, or much lighter balsa wood, even
thin sheets (with re-enforcement spacer ribs) of Plexiglas. Then you
can have any brand or model of your old favourite slide rule, complete with
accurate markings.
The difficulty is flipping it over to the log & trig functions, but
even that could be done by flipping it over downwards on
hinges.
Another project, besides astronomy, that would be out of
this world.
Just a thought ... but thanking the group for their
patience, I should probably end this AP-GTO off-topic, though very
interesting thread.
Joe
From: Don Anderson via groups.io
Sent: Friday, March 12, 2021 11:51 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Slide Rules and Slipsticks - in the 1960's
B.C. - i.e. (Before Computers) Barry's is bigger than ours
 Don
Anderson On Friday, March 12, 2021, 07:30:02 p.m. MST, Joe Zeglinski
<j.zeglinski@...> wrote:
Congrats Barry,
... on finding that huge Pickett. Years ago, I was looking for one as
well, and finally gave up. Settled for finding the Electrical Engineering
Pickett model instead.
Now, seeing yours, I may resume that search.
Joe
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Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)
Jeff B
What a great garage sale find. Would be a natural for American Pickers! I remember the huge one in college physics class. We had an "advanced course" in it and also circular slide rules that you could stuff inside your pocket protectors with the pens. Computer card stacks...learned real quick to always number the cards....in case you dropped the deck.....which you would eventually do.....that also carried over to numbering your viewgraph slides too. The big intense debate in my engineering college was centered around the use of the emerging hand calculators during testing. Their relative cost was similar to a high end cell phone today but some students had them. Took my school, Cincinnati, a good year to allow it as they saw the handwriting on the wall......where the big slide rule used to be. Jeff
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Fun with the Mach 2...
Bill Long
GTX + 16803 + Mach 2 should be illegal. 🙂 Excellent star HFD on focus, all the frames tonight are excellent in terms of star roundness. Not guiding at all.
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Re: APCC shows Altitude at 0 in Park 3
Bill Long
Right. If Wayne issued a malformed RCAL at some point, homing the mount will clear that. As a rule of thumb with both of my encoder mounts, I use the APPM "RECAL At Zenith" option during the model build. After that finishes I do home the mount (probably not
needed) and I get on my target and use APCC to do a APPM Solve and Sync.
From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Ray Gralak <iogroups@...>
Sent: Friday, March 12, 2021 11:31 PM To: main@ap-gto.groups.io <main@ap-gto.groups.io> Subject: Re: [ap-gto] APCC shows Altitude at 0 in Park 3 If the mount's site latitude and longitude are correct, just home the mount, as Bill suggested.
If the mount's latitude is wrong, power cycle the mount and make sure APCC is initializing the mount with the proper site lat/long. -Ray > -----Original Message----- > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Wayne Hixson via groups.io > Sent: Friday, March 12, 2021 10:02 PM > To: main@ap-gto.groups.io > Subject: Re: [ap-gto] APCC shows Altitude at 0 in Park 3 > > Hi Ray, I have tried that no luck. Trying reboot and restart the CP5 right now... > > nope. This did happen some time ago and you had a solution if I recall but can’t remember! >
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