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Re: AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
ap@CaptivePhotons.com
Thank you for pursuing and fixing what is obviously a rare error. I'll grab the new version.
Though I shall be careful in that area regardless, and move on to finding even more obscure ways to break things. :) Linwood |
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Re: AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
Ray Gralak
Hi Linwood,
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The problem did have to do with the refraction option, but it was just the lack of initialization of the site's latitude, which is contained in the missing PNT file. If you unchecked the refraction option in APCC then the problem would go away. In case you are interested, the actual problem was not the refraction calculation itself, but that APCC would pre-calculate the sine and cosine of latitude before using them so that it would not have to recalculate the same value all of the time. However, since the PNT file was missing, the latitude's sine and cosine values were never pre-calculated. The problem was that the cosine of latitude=0 is 1, but since it was never initialized, it remained at the default value of 0, causing large Alt/Az to HA/Dec computation errors. -Ray -----Original Message----- |
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APCC Pro 1.9.3.3
Ray Gralak
Hello all,
APCC Pro 1.9.3.3 is available for download from the link below. It includes the following changes: * Fixed bug in APPM Trial mode that prevented use of ASTAP. * Fixed bad pointing and tracking rate correction when the model's PNT file was missing. https://www.apastrosoftware.com/apcc_download/APCC_Pro_Setup_1.9.3.3.exe -Ray Gralak |
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Re: AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
ap@CaptivePhotons.com
On Thu, Jan 20, 2022 at 09:28 AM, Tom Blahovici wrote:
...exactly why self driving cars will never work...When users complained that the new GUI on Teslas was inconvenient, Musk famously responded "User Input Equals Error". So his theory is if the user just does nothing and lets the software do it all, everything works; all failures originate from the human. Which of course would have been true for my mount. :) Linwood |
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Re: AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
Tom Blahovici
. I believe you are the first to run across this in all the years since APCC has been available,
....exactly why self driving cars will never work... |
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Re: APCC pro replication to backup computer
Sam
Hi
i just copied the APCC settings file (*.apccZ) from my main computer to the backup computer and it appears to work well. The data for horizons, pointing model and site information have been transferred through this file. Its nice to have a backup computer ready with all this data because one invests so much time to customize APCC with horizons, pointing model etc that you don’t want to be vulnerable to a hard disk failure. thanks Sam |
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Re: [ap-ug] Life after the Stowaway
mjb87
Some people (beyond Astro-Physics) still care about quality. My CFF 300 Cassegrain has a cellular fused-silica glass mirror. It is, unfortunately, a better telescope than my seeing will accommodate.
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Re: DSLR on Mach2
Stone, Jack G
Shailesh,
Some often piggy back on the main scope. There are sidereal options – IOptron is one that is less expensive by far for exposures < 2mins, others have achieved longer exposure times. You could use Astrobin site for equipment search (DSLR w/GEM or Sidereal) – evaluate the setup and results. And you can even email the submitters for more information and guidance.
Jack ~
From: main@ap-gto.groups.io <main@ap-gto.groups.io>
On Behalf Of Shailesh Trivedi
Sent: Wednesday, January 19, 2022 3:06 PM To: main@ap-gto.groups.io Subject: Re: [ap-gto] DSLR on Mach2
Thank you, Joseph, Jeffc, Eric, and Jack. I am still consideringthe RST 135 E but am not fully convinced yet. |
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Re: DSLR on Mach2
Shailesh Trivedi
Thank you, Joseph, Jeffc, Eric, and Jack. I am still consideringthe RST 135 E but am not fully convinced yet.
Shailesh |
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Re: DSLR on Mach2
Stone, Jack G
Another perspective – that I found could be useful: Focusing fixture. There are several representations on websites. But adding the focus controller and belt drive to the lense focusing – with all that glass on longer exposures. Just a thought!
From: main@ap-gto.groups.io <main@ap-gto.groups.io>
On Behalf Of Eric Weiner
Sent: Wednesday, January 19, 2022 1:31 PM To: main@ap-gto.groups.io Subject: Re: [ap-gto] DSLR on Mach2
Similar to Jeff, a ADM D-series to Arca-Swiss for lenses which have feet (I actually use the V-series on my 135E), and a Arca-Swiss to Arca-Swiss bi-directional clamp for attaching the camera body (assuming you use an L-bracket) for lenses
which don't have feet. |
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Re: DSLR on Mach2
Similar to Jeff, a ADM D-series to Arca-Swiss for lenses which have feet (I actually use the V-series on my 135E), and a Arca-Swiss to Arca-Swiss bi-directional clamp for attaching the camera body (assuming you use an L-bracket) for lenses which don't have feet.
https://www.admaccessories.com/product/d2as-d-series-to-arca-swiss-adapter-converts-d-series-mounts-to-an-arca-swiss-series-mount/ https://www.amazon.com/Quick-Release-Subtend-Bidirectional-Double/dp/B08H5RKNSR/ref=sr_1_6?keywords=arca+swiss+90+degree+plate&qid=1642627714&sprefix=arca-swiss+90+d%2Caps%2C89&sr=8-6 |
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Re: DSLR on Mach2
Jeffc
Sure.
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I use my Canon Ra (and 5Diii) on the Mach2 with the AP 130GT and many other OTAs. I presume when you say “hook up” you are referring to “mounting” the camera on the Mach2 for doing wide field with a camera lens. I have also used cameras with 1/4-20 mounts on the losmandy plates. One solution I’ve had for a long time is a losmandy male-male plate, then a beefy losmandy 3-way camera mount. ADM makes the same parts. An easier solution is to just use a standard tripod “head” (which you might already have) mounted to a regular dovetail plate. For example I have a bogen 3-way head w/ quick release… I mount this to a losmandy DUP plate. The tripod heads are usually 3/8-16 (not 1/4-20) but I found there are enough holes in the dovetail plate to accommodate the tripod head. -jeff On Jan 19, 2022, at 12:45 PM, Shailesh Trivedi <shailesh.trivedi@...> wrote:
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Re: DSLR on Mach2
Joseph Beyer
ADM has a number of different DSLR camera mounting options including plates and clamps.
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DSLR on Mach2
Shailesh Trivedi
I know it is an overkill, but is there a way I can hook up a DSLR to my Mach2? Like perhaps purchasing a D to V ADM plate?
I am considering one of the RST135-E options for DSLRs and want an option to hook up AP130 or TEC160 but am getting close to my Losmandy FHD tripod option which I use on my Mach2, and have also used it for my AP1100AE. Shailesh |
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Re: [ap-ug] Life after the Stowaway
Terri Zittritsch
Roland, I love my refractors but I have to admit that the commercial SCTs are the best bang for the buck of any telescopes I have. I have an 8" meade ACF and an 11" Celestron edge and both perform, to my eyes, amazingly well given their price point. Un-forked they're amazingly portable for the aperture and forked are incredibly versatile with excellent goto. I have ordered a premium 7" refractor but I expect to keep my Meade for outreach. Lots of WOW for the buck and the vast majority in this hobby can't afford the price tags for premium 10" optics even if they were available.
Terri |
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Re: AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
ap@CaptivePhotons.com
What can I say, breaking software is a gift. Or a curse.
Yes, now that I realize the cause, the solution is obvious. I renamed them because I have two OTA's, and planned to reuse the models, and the names given by APPM are not meaningful. I put the OTA type in the name, so I could know which was which. It's sure easier than remember the date when I last created the refractor model, or the SCT model. Linwood |
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Re: AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
Ray Gralak
I was just guessing on the refraction issue. I haven't yet tried reproducing this, but I will as soon as I have some free time. I believe you are the first to run across this in all the years since APCC has been available, and there are a couple of obvious solutions, including:
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1. Making sure the PNT file exists. 2. Disable tracking and pointing corrections. And may I ask why you renamed the PNT file in the first place? -Ray -----Original Message----- |
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Re: AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
ap@CaptivePhotons.com
No, still running the released version of 6.5SP1, I tend to have enough stuff break around me without asking for trouble with the latest version of ascom. But if you think it will help I can. |
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Re: AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
Ray Gralak
That’s odd, all the terms are zero so I am not sure why a Dec value of 511 degrees would have been calculated, unless refraction has something to do with this.
By any chance have you updated the new ASCOM platform to 6.6? The release notes said something about fixing refraction.
-Ray
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of ap@...
Sent: Wednesday, January 19, 2022 7:09 AM To: main@ap-gto.groups.io Subject: Re: [ap-gto] AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
Sorry, Ray, when I say it was because of the model name, I meant it was because I renamed the model and the model name APCC was expecting was not present. |
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Re: AP1100AE needs exorcism (DEC turned all the way around like Linda Blair)
ap@CaptivePhotons.com
Sorry, Ray, when I say it was because of the model name, I meant it was because I renamed the model and the model name APCC was expecting was not present.
It's easily re-creatable for me. Last night I was imaging with the model, and shut down normally. To recreate this morning, before starting APCC I renamed the model to a new name. For simplicity I started just APCC, no ASCOM, no NINA. It auto-connected and and the model "loaded" all zeros (first two screen shots) I hand-keyed in the goto pane the uncorrected coordinates from the log you have (2d1m7.10s, 85d12m39.2s) and hit Goto. It took off counterclockwise again (I think I said clockwise somewhere, sorry). I stopped it after about 100 degrees or so, you can see in the 3D where I stopped it. Notice also the custom rate; at this point if I go to the tracking correction status it shows -18000.00 sec/hour. The log shows the corrected slew of +511*15:55.2 again. At that point (having stopped the slew, but nothing else, no restart) I went to Model, loaded the (now) proper name, and immediately the numbers all changed to something sensible. Without changing it I hit the goto button again and it properly slewed back to where it should be. It really seems like it is just as simple as removing a model from where APCC expects it to be when it starts up causes this, no special situation that I can see. I must be the only one that likes meaningful names. :) Obviously I won't be doing that any more. Thanks for looking at it. Linwood   
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