Date   

Re: Happy New Year from these two partiers

thefamily90 Phillips
 

Yahoo!!

JimP


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Harley Davidson <astrocnc@...>
Sent: Friday, January 1, 2021 5:30:07 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Cc: main@ap-ug.groups.io <main@ap-ug.groups.io>
Subject: [ap-gto] Happy New Year from these two partiers
 
Charlie and little MOOSE brought in 2021 with AP telescopes and my private stash. Charlie has a bottle of Total Solar eclipse moonshine and MOOSE has the limited edition number 500 of 500 Ozzy Osbourne Solar Red Wine. HAPPY NEW YEAR everyone!

tony




Re: safe way to load the OTA on the MACH2

Andrea Lucchetti
 
Edited

Thank you Roland and others, it seems that Park2 could be the way to go for me.
In my case three things worries me:
-my latitude is 42 deg, but that it shouldn't be a problem
-my rings are not very quick to lock: I have to put on the half ring and tighten the screws
-the scope will be unbalanced in DEC without the imaging train  and guide scope

Roland, Do you think the DEc friction will manage that unbalance for the time required to lock the rings?
or is this going to stress the mount too much?
I think I can find a balance point for this unloaded configuration, load the OTA in this configuration and slide the OTA back during final balance (it is a newton).

Thank you and
Happy New Year
Andrea


Re: Lost communications with mount

Konstantin von Poschinger
 

When you hear the click mostly the power is shut down or the voltage is too low. 

Grüsse

Konstantin v. Poschinger


Hammerichstr. 5
22605 Hamburg
040/8805747
0171/1983476

Am 01.01.2021 um 09:05 schrieb weihaowang <whwang@...>:

One update: I switched to wifi, and the problem still occurs.

This time, TheSky6 is connected to Mach2 through ASCOM, and no APCC involvement.
After the click sound, the ASCOM driver thinks Mach2 is parked, while TheSky is not aware
of anything.

This wifi experiment only lasts 10 minutes.  I have to shut everything down and go home now.
Based on this brief experiment, the problem is perhaps not related to the USB connection.


--

Homepage:

http://www.asiaa.sinica.edu.tw/~whwang/

Astrobin gallery:
http://www.astrobin.com/users/whwang/


Re: safe way to load the OTA on the MACH2

Konstantin von Poschinger
 

Hi,

this part from Baader Planetarium helps me to load my 16 kg OTA on my AP1600 safe. I use the park position 2. 

Grüsse

Konstantin v. Poschinger


Hammerichstr. 5
22605 Hamburg
040/8805747
0171/1983476


Am 01.01.2021 um 06:38 schrieb Jeffc <jeffcrilly@...>:



On Dec 31, 2020, at 9:16 AM, W Hilmo <y.groups@...> wrote:



Was it this one, by chance?

 

https://www.youtube.com/watch?v=IwVg1M6bURI

 

 

Yes.. I think so.  


From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jeffc
Sent: Thursday, December 31, 2020 9:10 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] safe way to load the OTA on the MACH2

 

I saw a video once where a large OTA was mounted by putting the OTA vertical on a tall chair next to the mount, and then bringing the DEC axis to a vertical position to mate with the OTA.   

 

I cannot find the video, but it goes something like this:

 

1) A chair (or table, or custom stand) is positioned next to the mount directly east or west… it will require some alignment that will become clear in a moment. 

 

2) The OTA , with lens cap on, is placed on the chair / stand etc pointing down.  Eg if the OTA is a SCT then the visual back is sticking up.   Likely a strap should be used to prevent the OTA from falling.  

 

3) The OTA is positioned so the dovetail is facing the mount.  

 

4) The mount RA axis is positioned horizontal with the DEC axis dovetail on the side where the OTA is now positioned. 

At this point I think you don’t want any counterweight. 

 

5) The DEC axis is then rotated vertical to match up with the OTA dovetail.  

 

6) At this point some alignment, ie moving the chair/table will likely be required…. Once aligned with the saddle, the dovetail saddle can then be clamped, and counterweights added, OTA strap removed, and chair/stand removed.  

I have not tried this approach.  I also have a rather heavy OTA - 300mm diameter and weighs about 18kg.   This OTA has a handle on the back such that I can use one hand under on the dovetail and the other hand on the handle to lift the OTA to just above my shoulders and slide the dovetail in.

Getting the OTA off in the dark is also a bit scary.     It is borderline weigh for me, and I would prefer a different approach — possibly one with less “drama”.

 

-Jeff

 



On Dec 31, 2020, at 8:04 AM, Andrea Lucchetti <andlucchett@...> wrote:

Hello,
I am not new to the hobby but my current OTA makes the set up phase not easy at all.

the diameter is 270mm and weight around 19 kg, and I don't feel confident in loading the telescope by myself on the mount.
I wonder if someone has perfectioned a style for the move. :-)
I use the AP DoveDV10 saddle plate, open the lockers, put the bar flat and on the left, close the lockers.
I load the scope in PARK3 position.
previously I used to slide the telescope from behind ( a TEC 140) but now this seems impossible.

I know it sounds like a joke but I don't like to be dependent on other people for the task.
if you know a trick , please share it.
Thank you
Andrea


Happy New Year from these two partiers

Harley Davidson
 

Charlie and little MOOSE brought in 2021 with AP telescopes and my private stash. Charlie has a bottle of Total Solar eclipse moonshine and MOOSE has the limited edition number 500 of 500 Ozzy Osbourne Solar Red Wine. HAPPY NEW YEAR everyone!

tony




Re: Lost communications with mount

weihaowang
 

One update: I switched to wifi, and the problem still occurs.

This time, TheSky6 is connected to Mach2 through ASCOM, and no APCC involvement.
After the click sound, the ASCOM driver thinks Mach2 is parked, while TheSky is not aware
of anything.

This wifi experiment only lasts 10 minutes.  I have to shut everything down and go home now.
Based on this brief experiment, the problem is perhaps not related to the USB connection.


--

Homepage:

http://www.asiaa.sinica.edu.tw/~whwang/

Astrobin gallery:
http://www.astrobin.com/users/whwang/


Re: Lost communications with mount

weihaowang
 

Hi Everyone,

Happy new year.

Thank you for all the inputs.  I have been testing this in the past two days.  Some progress and some puzzles.

First, I noticed that every time when the disconnection or lost communication occurs, about two to four seconds
earlier, there is a tiny click sound from the mount first.  Once I noticed this, I haven't found any exceptions.
The click sound that sounds like a parking or unparking sound always happens first, before the software side
shows a disconnection.  

About the crosshair update rate and timeout setting, initially I increased the times as suggested by Ray.  The
disconnection problem rate also decreases significantly.  However, it doesn't go away.  The longest crosshair
update time I tried is 2500 ms and the longest timeout I used for ASCOM driver is 3000 ms.  When I set to
these values, the problem occurred at a much lower rate.  I could "track" for anywhere between 20 minutes
and 1 hour without encountering a disconnection, but disconnection would still happen eventually.  What's
interesting is that now I went back to the default shorter update time and shorter timeout, the disconnection
still occurred with a much lower frequency.  Now it's a much rarer problem than what it was a few days ago.  
So probably the problem is not associated with the crosshair update time or timeout setting.  It's something
else I did. 

Now, no matter what I do, I can't make the disconnection problem occur as frequently as before.  It shows
up every half hour or even longer, but it doesn't completely go away.  This makes the testing much harder,
as I have to wait for very long for an error to show up.

Regarding Roland's last message, I now only run APCC.  No ASCOM, no TheSky, no nothing else.  The click
sound + disconnection still happens every half hour or so.  When it happens, the initialization window also
pops up.  And nothing appears in the APCC error log window.  That long window remains empty all the time.

At this moment, I am waiting for a custom-made tripod adapter for Mach2 and our existing tripod (TAK EM400's).
So I can't properly secure Mach2 and balance it with counterweights and a telescope.  I just put the unloaded
Mach2 on the table at positions around Park 3 with small range of RA motion.   I can't go to other Park positions
except for Park 2 and 3, to avoid RA imbalance.  To cycle through all Park positions as Roland suggested, it will
be some time later until I can really put Mach2 on a tripod.

To see if the problem is confined to APCC, ASCOM, or TheSky6, I tried the following:
1. Control Mach2 in TheSky6 through ASCOM only
2. Control Mach2 in TheSky6 through ASCOM under APCC with a virtual port
3. Control Mach2 with APCC only (no TheSky)
4. Control Mach2 with APJog Utility through ASCOM (no TheSky)
The behavior is all the same.  Every half hour orf so, a click sound from the mount and then disconnection detected
by the software.

Regarding power, I am using the 24V power converter that came with the mount. It was plugged into a 110V
wall power jack.  To make sure it's not the 110V power's fault, I just moved the 24V power converter to a UPS
that has been used by my NAS (so it should be very stable).  The disconnection problem still occurs (APCC only).
At this moment, I have no other means to verify whether it is a power-related problem. However, given that I am
using the original power adapter on a UPS, the power fed to Mach2 should be relatively clean and stable.

Last thing to share is, I just encountered a rare situation.  In APCC, I asked Mach2 to go from Park 3 to Park 2.
Right in the middle of motion, the click+disconnection occurred, and Mach2 stopped without completing the
parking task.  I am not sure if this helps to diagnose at all.  I just report this incident.  

I am still testing this using USB.  I want to make sure that I exhausted the possible tests.  Next I will move
to Ethernet and Wifi.

I appreciate all the helps you provided.

Cheers,
Wei-Hao



--

Homepage:

http://www.asiaa.sinica.edu.tw/~whwang/

Astrobin gallery:
http://www.astrobin.com/users/whwang/


Re: safe way to load the OTA on the MACH2

Jeffc
 



On Dec 31, 2020, at 9:16 AM, W Hilmo <y.groups@...> wrote:



Was it this one, by chance?

 

https://www.youtube.com/watch?v=IwVg1M6bURI

 

 

Yes.. I think so.  


From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jeffc
Sent: Thursday, December 31, 2020 9:10 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] safe way to load the OTA on the MACH2

 

I saw a video once where a large OTA was mounted by putting the OTA vertical on a tall chair next to the mount, and then bringing the DEC axis to a vertical position to mate with the OTA.   

 

I cannot find the video, but it goes something like this:

 

1) A chair (or table, or custom stand) is positioned next to the mount directly east or west… it will require some alignment that will become clear in a moment. 

 

2) The OTA , with lens cap on, is placed on the chair / stand etc pointing down.  Eg if the OTA is a SCT then the visual back is sticking up.   Likely a strap should be used to prevent the OTA from falling.  

 

3) The OTA is positioned so the dovetail is facing the mount.  

 

4) The mount RA axis is positioned horizontal with the DEC axis dovetail on the side where the OTA is now positioned. 

At this point I think you don’t want any counterweight. 

 

5) The DEC axis is then rotated vertical to match up with the OTA dovetail.  

 

6) At this point some alignment, ie moving the chair/table will likely be required…. Once aligned with the saddle, the dovetail saddle can then be clamped, and counterweights added, OTA strap removed, and chair/stand removed.  

I have not tried this approach.  I also have a rather heavy OTA - 300mm diameter and weighs about 18kg.   This OTA has a handle on the back such that I can use one hand under on the dovetail and the other hand on the handle to lift the OTA to just above my shoulders and slide the dovetail in.

Getting the OTA off in the dark is also a bit scary.     It is borderline weigh for me, and I would prefer a different approach — possibly one with less “drama”.

 

-Jeff

 



On Dec 31, 2020, at 8:04 AM, Andrea Lucchetti <andlucchett@...> wrote:

Hello,
I am not new to the hobby but my current OTA makes the set up phase not easy at all.

the diameter is 270mm and weight around 19 kg, and I don't feel confident in loading the telescope by myself on the mount.
I wonder if someone has perfectioned a style for the move. :-)
I use the AP DoveDV10 saddle plate, open the lockers, put the bar flat and on the left, close the lockers.
I load the scope in PARK3 position.
previously I used to slide the telescope from behind ( a TEC 140) but now this seems impossible.

I know it sounds like a joke but I don't like to be dependent on other people for the task.
if you know a trick , please share it.
Thank you
Andrea


Re: [ap-ug] Happy New Year to all!!

Jeff B
 

👍👍👌👌🔭😁󾓦🌘🚀

Of course you can say "What's up with the rocket?"  but I just want to say to all of the AP family,

Happy New Year and Thanks for the Many Memories Over the Last few Decades!

You all have made a real impact.

Jeff

On Thu, Dec 31, 2020 at 10:59 PM David Albers <humealbers@...> wrote:
Have a Happy New Year... Let 2021 bring those who are struggling some joy.


Re: [ap-ug] Happy New Year to all!!

David Albers
 

Have a Happy New Year... Let 2021 bring those who are struggling some joy.


Re: [ap-ug] Happy New Year to all!!

CaptMax
 

May we all have a better year in 2021. 
Max 


Re: [ap-ug] Happy New Year to all!!

thefamily90 Phillips
 

Happy New Year!
Been a tough year for many. I have so much to be thankful for and one of those things is the friendship and help of everyone in this group!

All the Very Best!

Jim Phillips

Image.jpeg


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Michael 'Mikey' Mangieri <mjmangieri@...>
Sent: Thursday, December 31, 2020 7:01:30 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] [ap-ug] Happy New Year to all!!
 
And a Happy New Year to all. 


On Dec 31, 2020, at 6:54 PM, Pete Lardizabal <p14@...> wrote:


Happy New Year 🎆🎈🎊 

Pete

On Dec 31, 2020, at 6:05 PM, Marj Christen <Marj@...> wrote:



From all of us at Astro-Physics to all of you, we wish you a very happy and healthy new year!!! 

 

We are very grateful for your support and patience during the challenges of 2020. Like most of you, we have had to adapt to changing circumstances while developing new products and keeping our production flowing.

 

We have appreciated the assistance and encouragement that you provide to each other throughout the year through these forums. We are very fortunate to share our astronomy journey and passion with you and look forward to the coming year.

 

Thank you very much and Happy New Year!

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: [ap-ug] Happy New Year to all!!

Michael 'Mikey' Mangieri
 

And a Happy New Year to all. 


On Dec 31, 2020, at 6:54 PM, Pete Lardizabal <p14@...> wrote:


Happy New Year 🎆🎈🎊 

Pete

On Dec 31, 2020, at 6:05 PM, Marj Christen <Marj@...> wrote:



From all of us at Astro-Physics to all of you, we wish you a very happy and healthy new year!!! 

 

We are very grateful for your support and patience during the challenges of 2020. Like most of you, we have had to adapt to changing circumstances while developing new products and keeping our production flowing.

 

We have appreciated the assistance and encouragement that you provide to each other throughout the year through these forums. We are very fortunate to share our astronomy journey and passion with you and look forward to the coming year.

 

Thank you very much and Happy New Year!

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: [ap-ug] Happy New Year to all!!

Pete Lardizabal
 

Happy New Year 🎆🎈🎊 

Pete

On Dec 31, 2020, at 6:05 PM, Marj Christen <Marj@...> wrote:



From all of us at Astro-Physics to all of you, we wish you a very happy and healthy new year!!! 

 

We are very grateful for your support and patience during the challenges of 2020. Like most of you, we have had to adapt to changing circumstances while developing new products and keeping our production flowing.

 

We have appreciated the assistance and encouragement that you provide to each other throughout the year through these forums. We are very fortunate to share our astronomy journey and passion with you and look forward to the coming year.

 

Thank you very much and Happy New Year!

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: safe way to load the OTA on the MACH2

Christopher Erickson
 

That is one thing I neglected to mention. A safety stop on the upper-end of the dovetail bar. Thanks for the reminder Joe.

I like to use the Losmandy DVA D-style ring bases (or an ADM DPA-D + "Rosette Knob Hand Tool") as a quick-on and quick-off safety stop. You can even put it at the right spot that gets the OTA balancing right the first time without further adjustment. They also provide a big edge to rest the OTA weight on while you take one hand to crank the bracket knobs. Make sure to crank them down securely so a sliding scope won't knock it right off the end of a dovetail bar.

I hope this helps.

"My advice is always free and worth every penny!"

-Christopher Erickson
Observatory Engineer
Summit Kinetics
Waikoloa, Hawaii


On Thu, Dec 31, 2020 at 12:55 PM Joe Zeglinski <J.Zeglinski@...> wrote:
    On the subject of OTA safety ... I would strongly suggest you be certain to have a wide head bolt, wider than the D-plate center groove – such as a 1/4-20 camera equipment lock nut – screwed UNDER the D-Plate.
 
    It would be personally embarrassing,  or even dangerous for the OTA,  if it weren’t secured tightly enough in the saddle, and it suddenly slid down, right off the saddle to the ground as the mount slewed to an upward position. At least that “safety-stop bolt” would have the D-Plate slam a short distance into the end of the saddle, rather than completely off to the ground.
 
    I wonder how many of us don’t have that safety-stop, or know that there should be one there.
 
Joe Z.


Re: Continued: (Field curvature with Flatteners and compressors)

Roland Christen
 

Try the spacer that comes with the reducer. It should work fine for a 42mm / 43.55mm diagonal dimension.
Spacing for the field flattener is less critical.

Roland



-----Original Message-----
From: Terri Zittritsch <theresamarie11@...>
To: main@ap-gto.groups.io
Sent: Thu, Dec 31, 2020 4:27 pm
Subject: Re: [ap-gto] Continued: (Field curvature with Flatteners and compressors)

Hi Roland, I have the standard TEC140ED,  just like your own.   Can I assume the same as above?  I have both of your grenades, the reducer and flattener.   Can I assume same spacing for both?   In the past I think your spec said 99.1 for the tec140 so I think you’re now saying that it’s 98.55 for a full frame (42mm given 43.55 is a full frame).    Since I use the dedicated TEC 18.3 spacer along with an ordered precise parts spacer, I think I can order your 16.x mm spacer (for another scope) and then some 1mm rings to adjust.   Before I do this I want to try it out first to see where I sit.  But as you can understand, I don’t have a lot of 68mm tubes and spacers lying around like I do for T-ring size.   It could make this whole adjustment process a bit expensive.    
Also, you mention a 51mm image circle.   I have a full frame sensor which is around 43mm (widest point), so do I use the 42mm or 51mm set point?   My simplistic view is that I’d use the 42 since it’s only a 1/2mm per corner vignette.   But maybe I’m looking at this too simply and you’re telling us about the 51mm image circle because we need 51mm to get a fully illuminated 36 film frame.  I’m a bit unclear on the message here.   Sorry, a bit dense.

On the 92TCC, for the Stowaway, I see it talks about a 40mm image circle, which is a little smaller than full frame (43 and change).. which I’m not overly worried about unless I’m looking at this wrong.   Originally I wasn’t concerned but now wondering if I’m looking at this correctly and need to hear from you.

Sincere thanks for your and Marj’s support this year.  

Best wishes for you and your family in the new year..   Let’s hope for a better one!

Terri

--
Roland Christen
Astro-Physics


Happy New Year to all!!

 

From all of us at Astro-Physics to all of you, we wish you a very happy and healthy new year!!! 

 

We are very grateful for your support and patience during the challenges of 2020. Like most of you, we have had to adapt to changing circumstances while developing new products and keeping our production flowing.

 

We have appreciated the assistance and encouragement that you provide to each other throughout the year through these forums. We are very fortunate to share our astronomy journey and passion with you and look forward to the coming year.

 

Thank you very much and Happy New Year!

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: safe way to load the OTA on the MACH2

Joe Zeglinski
 

    On the subject of OTA safety ... I would strongly suggest you be certain to have a wide head bolt, wider than the D-plate center groove – such as a 1/4-20 camera equipment lock nut – screwed UNDER the D-Plate.
 
    It would be personally embarrassing,  or even dangerous for the OTA,  if it weren’t secured tightly enough in the saddle, and it suddenly slid down, right off the saddle to the ground as the mount slewed to an upward position. At least that “safety-stop bolt” would have the D-Plate slam a short distance into the end of the saddle, rather than completely off to the ground.
 
    I wonder how many of us don’t have that safety-stop, or know that there should be one there.
 
Joe Z.


Re: safe way to load the OTA on the MACH2

Joe Zeglinski
 

Hi,
 
    I have always used PARK-2, the safest and easiest position from which to mount or dismount my RC-14.5 inch truss  OTA – when I have to.
I also use that position with a much lighter OTA, such as a  Questar-7 MAK.
 
    However, although I fully agree with all the comments about the position,  and especially use of OTA safety handles as Chris mentioned, having to lift it unassisted,  I still don’t trust my grip even on the lighter scope. An OTA can become VERY slippery, after a night’s session, when slicked with dew or ice crystals. Similarly, even though I can still “manage” gripping maybe an 80 lb. OTA, at my age, I always like a bit of insurance, especially when standing on a step-stool.
 
    When I need to attach or remove the OTA,  I always tie (or “safety-clip”),  a rope around its ends, or OTA ring handles if it has them, and hang the loop about my neck – just in case.
 
     If I accidentally trip or fall, I have health coverage – but the scope is uninsured with possibly a long AP replacement “wait-list”, so I would rather be the one cushioning its fall.  Besides, I always feel that some day it might slip from my hands, or ice cold fingers, and a belt or a rope loop,  gives it a “fall-back” position.   With your neck & shoulders  providing that extra “third lifting balance point”,  you also won’t strain your arms, whose unexpected spasm might drop it. Taking a stance on the ground like a weight-lifter, I can then deftly  “lift & snap” the OTA  safely into the waiting D-Plate carrier, holding it there at PARK-2, braced with one hand as I quickly secure the lock knobs. If my fingers should fumble anytime during the process, that neck belt is still there,  until the OTA is safely on the mount, or down inside its travel case.
 
Joe Z.


Re: Continued: (Field curvature with Flatteners and compressors)

Terri Zittritsch
 

Hi Roland, I have the standard TEC140ED,  just like your own.   Can I assume the same as above?  I have both of your grenades, the reducer and flattener.   Can I assume same spacing for both?   In the past I think your spec said 99.1 for the tec140 so I think you’re now saying that it’s 98.55 for a full frame (42mm given 43.55 is a full frame).    Since I use the dedicated TEC 18.3 spacer along with an ordered precise parts spacer, I think I can order your 16.x mm spacer (for another scope) and then some 1mm rings to adjust.   Before I do this I want to try it out first to see where I sit.  But as you can understand, I don’t have a lot of 68mm tubes and spacers lying around like I do for T-ring size.   It could make this whole adjustment process a bit expensive.    
Also, you mention a 51mm image circle.   I have a full frame sensor which is around 43mm (widest point), so do I use the 42mm or 51mm set point?   My simplistic view is that I’d use the 42 since it’s only a 1/2mm per corner vignette.   But maybe I’m looking at this too simply and you’re telling us about the 51mm image circle because we need 51mm to get a fully illuminated 36 film frame.  I’m a bit unclear on the message here.   Sorry, a bit dense.

On the 92TCC, for the Stowaway, I see it talks about a 40mm image circle, which is a little smaller than full frame (43 and change).. which I’m not overly worried about unless I’m looking at this wrong.   Originally I wasn’t concerned but now wondering if I’m looking at this correctly and need to hear from you.

Sincere thanks for your and Marj’s support this year.  

Best wishes for you and your family in the new year..   Let’s hope for a better one!

Terri

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