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Re: APPM Models
KHursh
PS. I am using a Pegasus Astro Powerbox which has real-time temp and humidity monitoring. I enter the atmospheric pressure manually.
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Re: Do NOT use ASCOM Platform v. 6.5 with APCC Pro
#APCC
#ASCOM_V2_Driver
Ray Gralak
Ray had noted that we should use v6.5SP1 but Karen’s email references v6.4SP1.Some clarification: 1) ASCOM Platform v6.4SP1 is okay to still use. 2) ASCOM Platform v6.5 had a serious bug in the Transform class that would cause APPM to produce bad models. 3) You can now *optionally* upgrade to ASCOM Platform v6.5SP1 because it has been released. However, I just noticed when hovering over the link for v6.5SP1 on the ASCOM web site that it is RC1 (release candidate 1). It is not the official release as I had thought, but it is the default choice now on the web site. That explains why I didn't see an announcement. So, it is okay to stay with v6.4SP1. If you want to upgrade to v6.5SP1 (RC1), that is okay too. Here is the link: https://www.ascom-standards.org (click the "Download" button on the right side of the web page) I am sorry this has been so confusing. The ASCOM naming convention is not helping. -Ray Gralak Author of PEMPro Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver -----Original Message-----
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Re: Do NOT use ASCOM Platform v. 6.5 with APCC Pro
#APCC
#ASCOM_V2_Driver
Joseph Beyer
Ray had noted that we should use v6.5SP1 but Karen’s email references v6.4SP1. Should we not use any version of 6.5 at this time?
On Nov 27, 2020, at 1:51 PM, Karen Christen <karen@...> wrote:
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Re: AP1100 GTO with AE installed today - but newbie question
#Absolute_Encoders
Roland Christen
Please contact George on Monday and he will help you install the encoder personality into your CP4.
Rolando
-----Original Message-----
From: Shailesh Trivedi <strivedi@...> To: main@ap-gto.groups.io Sent: Sat, Nov 28, 2020 1:18 am Subject: [ap-gto] AP1100 GTO with AE installed today - but newbie question #Absolute_Encoders #Absolute_Encoders Today I installed the Renishaw AEs on my AP1100GTO.
I am a newbie, what do I need to do to initialize them and turn them on? Shailesh -- Roland Christen Astro-Physics
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Re: APPM Models
KHursh
Thanks for the response Ray!
I am using a fairly well sorted and tied down set-up. I have a 120 mm refractor, so no mirror issues as of now. As for the rest of the randomness, who knows. I am not looking for unguided imaging, I just want REALLY good guiding. The Mach2 and my little 30 point model already improved my guiding to around .6 arc-sec rms. This is higher than many people get on lesser mounts, but a vast improvement to what I was getting. I have pretty bad seeing up here in Northern California. I don't want to fall into sycophancy, but I really am impressed by APCC/APPM, Ray. It is a large part of why I went with the Mach2 over the 1100GTO. The encoders plus APCC pro were the final decision point for me. Nice work! Kevin
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Re: AP1100 GTO with AE installed today - but newbie question
#Absolute_Encoders
Bill Long
Fix the personality, did you contact AP to do that or did they reach out to you? They did that for me without even having to ask, so I assume they did the same?
From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Shailesh Trivedi <strivedi@...>
Sent: Friday, November 27, 2020 11:18 PM To: main@ap-gto.groups.io <main@ap-gto.groups.io> Subject: [ap-gto] AP1100 GTO with AE installed today - but newbie question #Absolute_Encoders #Absolute_Encoders Today I installed the Renishaw AEs on my AP1100GTO.
I am a newbie, what do I need to do to initialize them and turn them on? Shailesh
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Re: APPM Models
Ray Gralak
Hi Kevin,
I ran my first successful model tonight of 30 points.If you don't change anything, the model will likely work pretty well indefinitely, but some things will hinder the model's accuracy. First, to properly account for refraction, you should supply APCC with real-time Temperature, Pressure, and Humidity measurements. The MGBoxV2 is one of the devices capable of supplying this information. You can add this device, or any other ASCOM device with an ASCOM Observing Conditions driver, in APCC's Environmental Settings. Some potential issues include: 1) Non-repeatable pointing. Some telescopes with non-fixed mirrors can introduce random pointing errors. 2) Any settling of the pier into the ground can change polar alignment. 3) Loose or flimsy mounting plates can introduce randomness. 4) An inadequate focuser can introduce extra flexure and/or introduce randomness. 5) Drastic changes to OTA flexure in temperature changes can subtly affect the pointing model. 6) Hanging cables can introduce randomness, especially if one gets caught on something. 7) Any changes to the setup after a model has been created will usually reduce the model's effectiveness. 8) Any inaccuracy in the plate solves will obviously affect accuracy. Provided that there is not significant pointing randomness nor unmodeled setup characteristics, each hemisphere model's pointing and tracking rate accuracy will improve as the square root of the number of points. Pointing and tracking rate accuracy should not change significantly over time as long as the setup is stable, which means minimally that the following do not change: polar alignment, flexure, telescope setup, and the total weight of all equipment, counterweights, and balance. That said, it's pretty easy to create a new model. APPM should be able to capture 2-3 points per minute, or 120-180 points per hour. -Ray Gralak Author of PEMPro Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver -----Original Message-----
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AP1100 GTO with AE installed today - but newbie question
#Absolute_Encoders
Shailesh Trivedi
Today I installed the Renishaw AEs on my AP1100GTO.
I am a newbie, what do I need to do to initialize them and turn them on? Shailesh
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Re: APPM Models
KHursh
Good tip Brian. I will do a 100 or so point model in the mean-time, before I can do the 'whole hog'
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Re: APPM Models
It sounds like a good idea... but you will get a handful of fails
around the bright moon if you are going to go through the effort of building a large model to keep for a while, my experience suggests you want to use a relatively moonless night hth Brian On Fri, Nov 27, 2020 at 8:08 PM KHursh via groups.io <khursh=yahoo.com@groups.io> wrote:
-- Brian Brian Valente portfolio brianvalentephotography.com
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Re: APPM Models
KHursh
I think I will make good use of the full-ish moon to make a much bigger model.
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Re: APPM Models
FYI we have a 400 point model and have been using it for months
On Fri, Nov 27, 2020 at 7:18 PM KHursh via groups.io <khursh=yahoo.com@groups.io> wrote:
-- Brian Brian Valente portfolio brianvalentephotography.com
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Re: APPM Models
KHursh
Thanks Roland. I won't be moving it.
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Re: APPM Models
Roland Christen
If you don't move your mount, you can use it for a long time.
Rolando
-----Original Message-----
From: KHursh via groups.io <khursh@...> To: main@ap-gto.groups.io Sent: Fri, Nov 27, 2020 8:34 pm Subject: [ap-gto] APPM Models I ran my first successful model tonight of 30 points. Obviously I am going to want to try a much larger model, but I am wondering how long can I use it. I was thinking about a hundred or so. If I go for 150 or 200 or so, can I use that model for multiple days? A week?
Kevin -- Roland Christen Astro-Physics
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APPM Models
KHursh
I ran my first successful model tonight of 30 points. Obviously I am going to want to try a much larger model, but I am wondering how long can I use it. I was thinking about a hundred or so. If I go for 150 or 200 or so, can I use that model for multiple days? A week?
Kevin
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Re: 140/155 4” Field Flatteners
Hi Rolando, Does the Quad TCC require the same back distance to focal plane in AP 155 f/7 as in 130 f/6.3 GTX/GT. Thanks, JT
On Nov 27, 2020, at 20:53, dvjbaja <jpgleasonid@...> wrote:
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Re: 900 mount spurious RA motor slewing and stall
Roland Christen
trying the Dec cable on the RA motor, it popped back up again. S Trying the Dec cable on the RA motor will cause a motor stall because the RA cable is trying to run the motor at sidereal, but cannot because it is not plugged in.
If you want to try the Dec on RA, first you have to turn the RA tracking rate to STOP. Then you can plug the Dec cable into the RA motor and move it with the buttons at some slew speed. If this works, then your RA motor is fine. Next plug the Dec cable into the Dec motor and move it with the buttons. If it works, then your Dec motor is fine. If both motors work with the Dec cable but not with the RA cable, then your Y cable has a defect in the RA portion.
Rolando
-----Original Message-----
From: Ken Sablinsky <kensablinsky@...> To: main@ap-gto.groups.io Sent: Fri, Nov 27, 2020 8:07 pm Subject: Re: [ap-gto] 900 mount spurious RA motor slewing and stall Thanks Jeff and Roland for the info.
Roland, looks like I'll have to call George on Monday. I performed your test of placing the RA cable to the Dec motor - at first it looked like it was the cable, but later trying the Dec cable on the RA motor, it popped back up again. So I thought perhaps it was the bottom part of the Y-cable at fault, so I pulled out my old shorter Y-cable from my original CP2 box, and the same runaway RA movement occurs. So either I've got two bad Y cables, or it's something more going on.
Thanks for your help in troubleshooting this for me.
-Ken
-- Roland Christen Astro-Physics
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Re: 900 mount spurious RA motor slewing and stall
Ken Sablinsky
Thanks Jeff and Roland for the info. Roland, looks like I'll have to call George on Monday. I performed your test of placing the RA cable to the Dec motor - at first it looked like it was the cable, but later trying the Dec cable on the RA motor, it popped back up again. So I thought perhaps it was the bottom part of the Y-cable at fault, so I pulled out my old shorter Y-cable from my original CP2 box, and the same runaway RA movement occurs. So either I've got two bad Y cables, or it's something more going on. Thanks for your help in troubleshooting this for me. -Ken
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Re: 140/155 4” Field Flatteners
dvjbaja
Yep, T-ripper is good to process 1000 mosaic tiles done with 16803. -jg
On Fri, Nov 27, 2020 at 5:43 PM Dale Ghent <daleg@...> wrote:
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Re: 140/155 4” Field Flatteners
Dale Ghent
On Nov 27, 2020, at 19:46, dvjbaja <jpgleasonid@gmail.com> wrote:End-game for me is a 155/7, so this is good to know! A large array for that full coverage will be quite expensive, not to mention the cost of narrowband filters. Smaller arrays work just fine for mosaics at a fraction of the cost. Just say'n. Oh and don't forget the PC requirements to handle stacks and stacks of 150 mp files.That's why the silicon gods granted us ThreadRipper! TRs help immensely even with the 60mp images of the IMX455 cameras. I'm waiting semi-patiently for AMD to sort out the supply of the new generation of ThreadRipper so I can return to doing things like local normalization and even 2x drizzling in PI and not have to wait half a lifetime for those processes to complete. /dale
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