Re: [ap-ug] IC1396 Garnet Star Nebula in Hubble Palette
Roland Christen
We are not changing the weight rating. This is a short fat scope and I don't want someone throwing a 9" refractor on this mount, thinking it will handle it.
Rolando
-----Original Message-----
From: Chris White <chris.white@...> To: main@ap-gto.groups.io Sent: Wed, Sep 22, 2021 7:51 pm Subject: Re: [ap-gto] [ap-ug] IC1396 Garnet Star Nebula in Hubble Palette On Tue, Sep 21, 2021 at 08:57 PM, Bill Long wrote:
Yeah!!! Now that's a torture test! Really looking forward to hearing how that goes.100%. This will be an awesome test. Might need to up the weight rating though if it is successful! ;-) I'll be watching this one. -- Roland Christen Astro-Physics
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Re: [ap-ug] IC1396 Garnet Star Nebula in Hubble Palette
Chris White
On Tue, Sep 21, 2021 at 08:57 PM, Bill Long wrote:
Yeah!!! Now that's a torture test! Really looking forward to hearing how that goes.100%. This will be an awesome test. Might need to up the weight rating though if it is successful! ;-) I'll be watching this one.
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Re: semi-OT: deterring critters in the obsy
If it let out some big cat howls, it was looking for love, not a fight. And one or more people in the group must have had indoor cats and their clothes were saturated with cat musk. Hunting cats make no noise whatsoever. I thought you needed to know that. LOL! -Christopher Erickson Observatory Engineer Summit Kinetics Waikoloa, Hawaii
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Re: semi-OT: deterring critters in the obsy
Roland Christen
I have coyotes in the cornfields nearby that howl up a storm whenever a distant police car sounds his siren. They also howl at the Moon when it rises over the treetops.
Rolando
-----Original Message-----
From: Joseph Beyer <jcbeyer2001@...> To: main@ap-gto.groups.io Sent: Wed, Sep 22, 2021 6:36 pm Subject: Re: [ap-gto] semi-OT: deterring critters in the obsy It's a spooky sound. Sitting out next to the telescope and hearing a deer being killed in the neighbor's yard leaves a person feeling a bit exposed. I still prefer the four legged neighbors rather than the two legged variety!
There have been a number guys in the local astronomy club using the darker regional parks who have had experiences with the local mountain lions. For whatever reason a lion approached the groups after dark and let out a few big cat howls. The call of the wild was followed by a rapid packing of vehicles and calling it a night. -- Roland Christen Astro-Physics
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Re: semi-OT: deterring critters in the obsy
Joseph Beyer
It's a spooky sound. Sitting out next to the telescope and hearing a deer being killed in the neighbor's yard leaves a person feeling a bit exposed. I still prefer the four legged neighbors rather than the two legged variety!
There have been a number guys in the local astronomy club using the darker regional parks who have had experiences with the local mountain lions. For whatever reason a lion approached the groups after dark and let out a few big cat howls. The call of the wild was followed by a rapid packing of vehicles and calling it a night.
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Re: semi-OT: deterring critters in the obsy
Hi Joseph, A couple of years ago a mountain lion killed a deer in front of our home in north San Diego County, Solana Beach. I heard a strange noise about 5:00 am. Someone or something was in distress but I had never heard that sound before so went back to bed. Next morning I saw the aftermath and understood it was the deer I heard. The end of our cul de sac borders a lagoon preserve which supports a small herd of deer and an occasional mountain lion. The animal control officer that picked up the deer said, "Yes, that was a big kitty cat."
On Wed, Sep 22, 2021 at 11:30 AM Joseph Beyer <jcbeyer2001@...> wrote: Really nice! I live in a suburban neighborhood not far from open space on the San Francisco peninsula and we've got a variety of critters around including lots of deer. The other night I was pulling the car into the garage and close by heard one of the neighborhood deer getting attacked by "something". Looked in the rearview mirror and saw a young mountain lion run right in back of the car and off down the street. When I'm out imaging at night the 8 foot fence around the yard is constantly vibrating due to animals jumping on and off in other yards. So far worst I've had is families of raccoons and opossums come down the fence line in back of me. I'm just waiting for the night when it's a bobcat or bigger.
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Re: Vintage 800 Mount Serial Number
Hi Mike,
Well that’s a good question! I checked with our master mount maker Dave and he had to look at the one 800 mount we have here. Like you, he could not find a serial number. I checked with our most senior employee Christine and she also can find no record or hint of the 800 mounts ever having serial numbers. You’re welcome to give yours a name instead. 😜 Karen AP
From: main@ap-gto.groups.io <main@ap-gto.groups.io>
On Behalf Of M Hambrick
Sent: Wednesday, September 22, 2021 11:36 AM To: main@ap-gto.groups.io Subject: [ap-gto] Vintage 800 Mount Serial Number
Do the old 800 mounts have serial numbers ? If so where do I find it ? I have an old 800 mount that I bought in 1992 that I am thinking about selling to help pay for absolute encoders when they become available. If I sell the mount, it
would be nice if I can give the buyer the serial number. -- Karen Christen Astro-Physics
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Re: APCC with SGP Pier Flip Failure
#APCC
Andrew J
Hi Ray.
Thanks for the feedback. Good info on SGPro v4 allowing negative values. Also, your point about allow CW UP Slews is a good one. I think Luca made the same suggestion above. I am always reluctant to give external programs the ability to do CW Up Slews for fear of Pier Crashes. However, I guess as long as I keep the Homing Limits in place I should be OK. Slightly off topic, but I do wish the Homing Limits were more like the meridian limits where you could specify different values for different DEC values. I use the Homing Limits as a "no fly zone", that no matter where a slew or tracking command comes from the mount will never get into a situation where a Pier Crash is emminant. Meridian Limits are great, except for the "Not Slew Limits" warning. I wish they they were slew limits as well. We could setup the limits one time when mounting a new scope and imaging train and the sleep well knowing there is no possible way for an errant slew or user error to cause the mount to slew or track into the Pier. For those of us who operate our rigs remotely, this would be a very nice feature.... Andrew J
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Re: semi-OT: deterring critters in the obsy
Joseph Beyer
Really nice! I live in a suburban neighborhood not far from open space on the San Francisco peninsula and we've got a variety of critters around including lots of deer. The other night I was pulling the car into the garage and close by heard one of the neighborhood deer getting attacked by "something". Looked in the rearview mirror and saw a young mountain lion run right in back of the car and off down the street. When I'm out imaging at night the 8 foot fence around the yard is constantly vibrating due to animals jumping on and off in other yards. So far worst I've had is families of raccoons and opossums come down the fence line in back of me. I'm just waiting for the night when it's a bobcat or bigger.
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Re: semi-OT: deterring critters in the obsy
thefamily90 Phillips
Wow! Very nice!!
From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Phillip Klein <klein.phillip@...>
Sent: Wednesday, September 22, 2021 12:45:50 PM To: main@ap-gto.groups.io <main@ap-gto.groups.io> Subject: Re: [ap-gto] semi-OT: deterring critters in the obsy Hello,
Seeing the emails about critters prompted me to send the photo of the critter that strolled by last night . The image was captured on my game camera. The mountain lion is approximately 100 feet from the concrete pier of my telescope which was not in use
at the time. Perhaps I need to keep a can of bear spray next to me but on the other hand if I was present the lion would likely never have walked by
My site is located on the central coast of California on the east side of the Santa Lucia Mountains.
Wishing you clear skies!
Phil
On Fri, Sep 17, 2021 at 2:19 PM Bill Long <bill@...> wrote:
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Re: #Keypad Park Positions: AP 1100 GTO with encoders
#Keypad
Roland Christen
You have basically a permanent setup and I believe you are missing a fundamental fact about the mount CP4 controller. The fact is that the controller always knows where the mount is pointed, even after the power is removed. That assumes that you do not take the telescope off the mount and disturb the positions of the axes by loosening the clutches. Therefore, once you have established the mount's position in the sky by having it go to a known object and doing a Recal on it, then all other positions will be correct. There is never a need to go to a known park position and doing a "Resume from Park X" routine.
The absolute simplest and most foolproof way to operate your mount is to change the setting in the keypad from Autoconnect "NO" to Autoconnect "YES". This will insure that the logic in the mount servo controller is always in charge of the operation and is never fooled by human error during startup. With Autoconnect YES the mount will start automatically and will never be lost or go to wrong park positions. You can move your mount on the dolly and it will not change the mount's internal calibration - as long as you never loosen the clutches and move the axes manually.
You have a permanent setup, which is defined as having the telescope attached to the mount and never removed and not disturbing the axes by loosening the clutches. Therefore the best, easiest and most sure-fire way to start your mount is to allow the mount's controller to determine where the axes are, and not over-riding this internal knowledge by starting manually every time. Set the keypad to Autostart YES and your startup will be seamless and accurate every time. Of course you can park your mount at any of the park positions at the end of your session, even Park 1 if that's where the setup clears your roof. Autostart YES will take all that into consideration, EVEN if the mount is parked with counterweight up and past the meridian!!
IMPORTANT: as long as you never loosen the clutches and move the axes manually.
We put a lot of smarts into the CP4 controllers in order to make operation of the mount as simple as possible. You take advantage of that by setting the keypad to Autostart "YES". If you always start with Autostart "NO", then you are throwing away all the smarts that are built into the mount, and it becomes just another mediocre mount that needs a lot of babysitting to get it going every night. Does all this make sense to you?
Roland Christen
Astro-Physics Inc.
-----Original Message-----
From: Thomas Giannaccini <tgiann3@...> To: main@ap-gto.groups.io Sent: Wed, Sep 22, 2021 11:42 am Subject: Re: [ap-gto] #Keypad Park Positions: AP 1100 GTO with encoders The mount and pier are on a motorized dolly. The dolly moves about 20-30 ft. I have not taken the setup apart yet but in the future, yes, it will be disassembled and substantially moved.
I think updating the keypad to Park 5 and using the sequence you suggested will go a long way.
Thank you,
Tom
-- CN: HasAnyoneSeenMyNeblua -- Roland Christen Astro-Physics
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Re: semi-OT: deterring critters in the obsy
Hello, Seeing the emails about critters prompted me to send the photo of the critter that strolled by last night . The image was captured on my game camera. The mountain lion is approximately 100 feet from the concrete pier of my telescope which was not in use at the time. Perhaps I need to keep a can of bear spray next to me but on the other hand if I was present the lion would likely never have walked by My site is located on the central coast of California on the east side of the Santa Lucia Mountains. Wishing you clear skies! Phil
On Fri, Sep 17, 2021 at 2:19 PM Bill Long <bill@...> wrote:
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Re: #Keypad Park Positions: AP 1100 GTO with encoders
#Keypad
Thomas Giannaccini
You know….I thought about being more accurate with my description….hahaha Tom
On Wed, Sep 22, 2021 at 8:02 AM Jerry Floyd <jlfloyd720@...> wrote: Of course you can't "achieve" all the Park positions (1-4) simultaneously. You can only put a mount in one park position at a time. Otherwise the mount would need to be in 4 places at once, which would violate Einstein's laws of relativity. --
CN: HasAnyoneSeenMyNeblua
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Re: #Keypad Park Positions: AP 1100 GTO with encoders
#Keypad
Thomas Giannaccini
The mount and pier are on a motorized dolly. The dolly moves about 20-30 ft. I have not taken the setup apart yet but in the future, yes, it will be disassembled and substantially moved. I think updating the keypad to Park 5 and using the sequence you suggested will go a long way. Thank you, Tom
--
CN: HasAnyoneSeenMyNeblua
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Vintage 800 Mount Serial Number
Do the old 800 mounts have serial numbers ? If so where do I find it ? I have an old 800 mount that I bought in 1992 that I am thinking about selling to help pay for absolute encoders when they become available. If I sell the mount, it would be nice if I can give the buyer the serial number.
Mike
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Re: APCC with SGP Pier Flip Failure
#APCC
Ray Gralak
Hi Andrew,
toggle quoted messageShow quoted text
Negative values will work if you are using SGPro V4, or an up-to-date SGPro V3. BTW, I noticed your screenshot has meridian limits off and counterweight up slews to West unchecked. You should enable both, and consider unchecking "Limit to meridian" as that might not allow the flip offset to be set appropriately at times. -Ray
-----Original Message-----
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Re: #Keypad Park Positions: AP 1100 GTO with encoders
#Keypad
Roland Christen
Let me ask you a more fundamental question. Do you have a fixed setup where you do not remove the scope from the mount after each session?
Roland
-----Original Message-----
From: Thomas Giannaccini <tgiann3@...> To: main@ap-gto.groups.io Sent: Tue, Sep 21, 2021 9:32 pm Subject: Re: [ap-gto] #Keypad Park Positions: AP 1100 GTO with encoders Mike,
I received an email from Roland telling me to use Park 3, 2 and 5. So I will try that.
I think I generally only used “resume from park” on the initial startup. Initially that was Park 1, until George said to use Park 3. So, from that point forward I would resume from Park 3.
I store the mount in Park 1 so it will fit in the shed. Perhaps I can try Park 4 or 5 to store it. I will first try resuming from Park 4 or 5 but if that doesn't work, I will just start from Park 3 by manually placing it there by hand if necessary after slewing to Park 3.
In terms of waiting, I never timed it but I never went immediately to a target, I didn’t realize there was a time crunch. I did read the manual but I think it takes a few iterations for it to all sink in.
What was confusing is that some Park attempts would end with the OTA in very odd positions. So it wasn’t a small margin of error as if the difference was based on movement from tracking; there were many times it wasn’t even in the ballpark. As to if the weights were pointed upwards, I did not notice them pointing up but if it was by a small amount I may not have seen it.
I am interested to try Roland’s suggestion. I think I may have to update my keypad to get Park 5.
I try not to bog the forum with beginner questions, I only really ask when my attempted solutions don’t seem to work at all.
Thank you for your help,
Tom
On Tue, Sep 21, 2021 at 6:56 PM Mike Dodd <mike@...> wrote:
On 9/21/2021 8:37 PM, Thomas Giannaccini wrote: -- CN: HasAnyoneSeenMyNeblua -- Roland Christen Astro-Physics
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Re: APCC with SGP Pier Flip Failure
#APCC
Andrew J
Update: I just realize that my SGP screeenshot show Minutes Past Meridian to Flip is set to 5, which conflict with the Homing Limit of 2.0 Mins from Meridian. SGP use to be set to 0 Mins Past Meridian to Flip. Not sure how this got changed. Normally I set to zero. I would use a negative number, but my understanding is that negative values don't work.
Andrew
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Re: APCC with SGP Pier Flip Failure
#APCC
Andrew J
Hi. I am following this topic with great interest. I have also had issues with consistent Pier Flips when using SGP with APCC with my Mach1 and a TEC140. In my previous setup, I had very narrow window to do the Pier Flip because with my old Pier I was barely able to go past the meridian without risking a Pier crash. Basically, I needed to do the flip as close to the meridian as possible.
These are the Meridian settings I have used previously with the Mach1.
These are my settings Meridian Flip settings in SGP:
Andrew J
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Re: #Keypad Park Positions: AP 1100 GTO with encoders
#Keypad
Jerry Floyd
Of course you can't "achieve" all the Park positions (1-4) simultaneously. You can only put a mount in one park position at a time. Otherwise the mount would need to be in 4 places at once, which would violate Einstein's laws of relativity.
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