Date   

Re: [ap-ug] Gonna shoot tonight - it's clear and BRRRRR

Roland Christen
 

Oh yeah! I'm well aware but have experienced colder in the past. 10 minutes working with the computer is about the limit, but I have nice warm tea inside. Right now mount and camera are working well. Transparency is super, seeing is horrid. We'll see what we get.

Roland



-----Original Message-----
From: thefamily90 Phillips <thefamily90@...>
To: main@ap-ug.groups.io <main@ap-ug.groups.io>; main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sat, Feb 13, 2021 6:15 pm
Subject: Re: [ap-gto] [ap-ug] Gonna shoot tonight - it's clear and BRRRRR

Man, don’t get hypothermic or frostbite! Keep those fingers and toes warm. Good Luck!!

JimP 


From: main@ap-ug.groups.io <main@ap-ug.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Saturday, February 13, 2021 7:11:52 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>; main@ap-ug.groups.io <main@ap-ug.groups.io>
Subject: [ap-ug] Gonna shoot tonight - it's clear and BRRRRR
 
I'm going to give it a try with my Mach2 in sub-zero F temps. It's brilliantly clear (YAY!) but below zero (Wahh!). I hope my laptop doesn't freeze up on me. Wish me luck.

Testing continues primarily to see where and if the normal temp encoders will fail to operate in sub-zero conditions. So far they work fine but we have not seen -20F yet. Maybe Sunday night - Monday morning. Coldest it's ever been in Northern Illinois is -32F, but haven't seen that in the last 10 years.

Rolando

--
Roland Christen
Astro-Physics


Re: Gonna shoot tonight - it's clear and BRRRRR

Terry Martin
 

Good Luck Roland.  You're far braver than me.

Terry


Re: [ap-ug] Gonna shoot tonight - it's clear and BRRRRR

thefamily90 Phillips
 

Man, don’t get hypothermic or frostbite! Keep those fingers and toes warm. Good Luck!!

JimP 


From: main@ap-ug.groups.io <main@ap-ug.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Saturday, February 13, 2021 7:11:52 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>; main@ap-ug.groups.io <main@ap-ug.groups.io>
Subject: [ap-ug] Gonna shoot tonight - it's clear and BRRRRR
 
I'm going to give it a try with my Mach2 in sub-zero F temps. It's brilliantly clear (YAY!) but below zero (Wahh!). I hope my laptop doesn't freeze up on me. Wish me luck.

Testing continues primarily to see where and if the normal temp encoders will fail to operate in sub-zero conditions. So far they work fine but we have not seen -20F yet. Maybe Sunday night - Monday morning. Coldest it's ever been in Northern Illinois is -32F, but haven't seen that in the last 10 years.

Rolando


Gonna shoot tonight - it's clear and BRRRRR

Roland Christen
 

I'm going to give it a try with my Mach2 in sub-zero F temps. It's brilliantly clear (YAY!) but below zero (Wahh!). I hope my laptop doesn't freeze up on me. Wish me luck.

Testing continues primarily to see where and if the normal temp encoders will fail to operate in sub-zero conditions. So far they work fine but we have not seen -20F yet. Maybe Sunday night - Monday morning. Coldest it's ever been in Northern Illinois is -32F, but haven't seen that in the last 10 years.

Rolando

--
Roland Christen
Astro-Physics


Re: California on fire

Dale Penkala
 

Beautiful!


Re: Mach2 Guide rate and question about gear meshing.

Micheal Fields Jr
 

Worked thank you.  The email you provided had the stuff after "@" deleted / removed by the group hosting software so I took a guess and was wrong.


Re: Mach2 Guide rate and question about gear meshing.

Roland Christen
 

If this doesn't work I'll see if I can get your e-mail address from the office.

Roland



-----Original Message-----
From: chris1011@...
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sat, Feb 13, 2021 2:26 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

Send your e-mail to: chris1011@...
It won't bounce.

Roland



-----Original Message-----
From: Micheal Fields Jr via groups.io <mpfjr@...>
To: main@ap-gto.groups.io
Sent: Sat, Feb 13, 2021 2:11 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

You didn't see my note.  The email to chris1011@ ...  bounced back.  Was invalid or whatever.  If you could email to joeplayer99@... that is my spam email account that I am fine posting on the group and taking the risk.

mx110.antispamcloud.com rejected your message to the following email addresses:
chris1011@ (chris1011@)I removed the rest of the email address manually.
Your message couldn't be delivered. When Office 365 tried to send the message, the external email server returned the error below. This is probably due to a problem or policy setting on the recipient's email system.I 



--
Roland Christen
Astro-Physics


Re: Mach2 Guide rate and question about gear meshing.

Roland Christen
 

Send your e-mail to: chris1011@...
It won't bounce.

Roland



-----Original Message-----
From: Micheal Fields Jr via groups.io <mpfjr@...>
To: main@ap-gto.groups.io
Sent: Sat, Feb 13, 2021 2:11 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

You didn't see my note.  The email to chris1011@ ...  bounced back.  Was invalid or whatever.  If you could email to joeplayer99@... that is my spam email account that I am fine posting on the group and taking the risk.

mx110.antispamcloud.com rejected your message to the following email addresses:
chris1011@ (chris1011@)I removed the rest of the email address manually.
Your message couldn't be delivered. When Office 365 tried to send the message, the external email server returned the error below. This is probably due to a problem or policy setting on the recipient's email system.I 



--
Roland Christen
Astro-Physics


Re: Mach2 Guide rate and question about gear meshing.

Micheal Fields Jr
 

You didn't see my note.  The email to chris1011@ ...  bounced back.  Was invalid or whatever.  If you could email to joeplayer99@... that is my spam email account that I am fine posting on the group and taking the risk.

mx110.antispamcloud.com rejected your message to the following email addresses:

chris1011@ (chris1011@)I removed the rest of the email address manually.

Your message couldn't be delivered. When Office 365 tried to send the message, the external email server returned the error below. This is probably due to a problem or policy setting on the recipient's email system.I 



Re: Mach2 Guide rate and question about gear meshing.

Roland Christen
 

Ok, I' ll be waiting.

Rolando



-----Original Message-----
From: Micheal Fields Jr via groups.io <mpfjr@...>
To: main@ap-gto.groups.io
Sent: Fri, Feb 12, 2021 5:59 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

[Edited Message Follows]
Sorry I did not yet. Going to do so now.  Very busy around here today.

Edit: email bounced back.  

You are welcome to email me directly.  This is my junk email.  joeplayer99@...   Not worried about it being public.

--
Roland Christen
Astro-Physics


Re: [ap-ug] Reflections Nightmare - I'm ready to give up the hobby!

Roland Christen
 

Hello,

I cannot be sure about our QuadTCC working with your scope to produce no reflections. However, i do know that our 130 field flattener will work and produce zero reflections. It has been designed with convex radii so that any light reflected from the filters will be dispersed toward the outside of the focal plane and not towards the middle.

here is a simple test that you can do to determine where the reflections originate. Take an image with your filters and no field flattener or telecompressor in the optical path. If you still see reflections, then it is caused by your filters. Filters like the Astrodon series, have a sharp cutoff of each color, so they will pass the principal color and reflect the ones outside their passband. The colors that are reflected back up toward the telecompressor will then be rejected if they are reflected back from the telecompressor down to the chip. They will not be able to pass thru the filter again. Other filters may have less steep cutoff, and thereby allow some of the reflected light to pass again thru the filter and produce halos or reflection artifacts.

I have used Astrodon filters in all of my cameras since many years now and have never seen reflections like the ones in your images. However, I know about your reflections because I did have multiple reflections from a set of less expensive filters.

As far as using our 130 Field Flattener, I can assure you that this will not produce reflections, even if your filters do not have a sharp cutoff. If you have been watching our group for some time, you may have seen images taken by Ignacio, a lot of them became APOD images, and you will see the contrast and zero reflections in all of his images. I worked with him years ago to produce just the right Flattener design geometry to eliminate even the slightest hint of reflections - Ignacio was extremely demanding that this optic works perfectly.

So, the solution might require both testing a different filter and a different field flattener. The problem is not coming from the main objective for sure. So try my suggestion of removing the field flattener first and see if the reflections go away. Then the solution might be either change the filters or change the field flattener or both for best results.

Rolando


-----Original Message-----
From: Jon <jonkelly999@...>
To: main@ap-ug.groups.io
Sent: Sat, Feb 13, 2021 6:08 am
Subject: [ap-ug] Reflections Nightmare - I'm ready to give up the hobby!

I have posted previously about reflections with a Riccardi reducer but now have the same issue with a native flattener and I have tried everything I can think off. 

My objective is to purchase a QUADTCC to replace the Riccardi but I cant do this until I sort out the existing reflections which I now suspect are coming from the sensor/filters.

I have now spent over 20 imaging sessions since October trying to sort out the issue and it has become such a chore that I'm ready to give up the hobby - can anyone help? 

Equipment - CFF 135/926mm, QHY600L, Chroma LRGB and 3nm Ha/OIII/SII. 

I have tried reversing filters individually in all permutations, moved spacing from between Objective and Filters to between Filters and Sensor and its just balloon squeezing. One filter works, then another one doesn't. Lights work but flats don't or vice versa. Nothing I do seems to help.

I can take images with no bright stars ok but as soon as I try something like the Pleiades I have issues. 

These are the latest test images on Pleiades, one for each filter - all 120s subs. All have reflections.
https://www.dropbox.com/sh/gn2x15vu8hs1whn/AADquWhGxYyE_SvfevDrYyzKa?dl=0

Can these reflections be resolved or am I wasting my time?

I would be very grateful if anyone could help or work with me to try and sort this out.

Thanks
Jon

--
Roland Christen
Astro-Physics


Re: Mach2 Guide rate and question about gear meshing.

Micheal Fields Jr
 
Edited

Sorry I did not yet. Going to do so now.  Very busy around here today.

Edit: email bounced back.  

You are welcome to email me directly.  This is my junk email.  joeplayer99@...   Not worried about it being public.


Re: Mach2 Guide rate and question about gear meshing.

Roland Christen
 

I was asking Michael Fields.

Roland



-----Original Message-----
From: Phillip Klein <klein.phillip@...>
To: main@ap-gto.groups.io
Sent: Fri, Feb 12, 2021 4:55 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

Roland,

I did not.

Best,

Phil Klein

On Fri, Feb 12, 2021 at 2:37 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
Did you send me an e-mail?

Roland Christen
Astro-Physics Inc.



-----Original Message-----
From: Micheal Fields Jr via groups.io <mpfjr=yahoo.com@groups.io>
To: main@ap-gto.groups.io
Sent: Fri, Feb 12, 2021 2:24 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

I think it is because Daleen had my name ae instead of ea when she registered me?  Not sure.  I was talking to her about APCC Pro.  The invoice does have my name ae instead of ea too.  But that isn't anyone's fault.  My name is spelled some weird old Irish spelling.  And Yes please send me the instructions to adjust it a bit.  I took the covers off as you suggested and I can see how it works I believe.  My first instinct would be to break loose the top nut which has red lock on it.  Then back out the spring plunger bolt about 1/8th of a turn and then tighten up the nut again and test.    Awaiting genuine instructions.  

My serial is M20094  Invoice # 59566-S2

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Mach2 Guide rate and question about gear meshing.

Phillip Klein
 

Roland,

I did not.

Best,

Phil Klein

On Fri, Feb 12, 2021 at 2:37 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
Did you send me an e-mail?

Roland Christen
Astro-Physics Inc.



-----Original Message-----
From: Micheal Fields Jr via groups.io <mpfjr=yahoo.com@groups.io>
To: main@ap-gto.groups.io
Sent: Fri, Feb 12, 2021 2:24 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

I think it is because Daleen had my name ae instead of ea when she registered me?  Not sure.  I was talking to her about APCC Pro.  The invoice does have my name ae instead of ea too.  But that isn't anyone's fault.  My name is spelled some weird old Irish spelling.  And Yes please send me the instructions to adjust it a bit.  I took the covers off as you suggested and I can see how it works I believe.  My first instinct would be to break loose the top nut which has red lock on it.  Then back out the spring plunger bolt about 1/8th of a turn and then tighten up the nut again and test.    Awaiting genuine instructions.  

My serial is M20094  Invoice # 59566-S2

--
Roland Christen
Astro-Physics


Re: Mach2 Guide rate and question about gear meshing.

Roland Christen
 

Did you send me an e-mail?

Roland Christen
Astro-Physics Inc.



-----Original Message-----
From: Micheal Fields Jr via groups.io <mpfjr@...>
To: main@ap-gto.groups.io
Sent: Fri, Feb 12, 2021 2:24 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

I think it is because Daleen had my name ae instead of ea when she registered me?  Not sure.  I was talking to her about APCC Pro.  The invoice does have my name ae instead of ea too.  But that isn't anyone's fault.  My name is spelled some weird old Irish spelling.  And Yes please send me the instructions to adjust it a bit.  I took the covers off as you suggested and I can see how it works I believe.  My first instinct would be to break loose the top nut which has red lock on it.  Then back out the spring plunger bolt about 1/8th of a turn and then tighten up the nut again and test.    Awaiting genuine instructions.  

My serial is M20094  Invoice # 59566-S2

--
Roland Christen
Astro-Physics


Re: How long for UNGUIDED imaging with non AE mounts?

Worsel
 

Emilio

1. I set my PHD2 exposures to 4 s (when I am guiding...see 2), but I also set a delay in between exposures.  I continue to experiment with that delay from 3s to 10s. 
2. Yes, my experience with the model is that it does improve both tracking and GoTos.   I had the 1100 since 2016.  I would not have been able to image Un-guided before implementing modelling in 2019.  I still guide at times, especially for longer exposures.

Bryan


Re: Mach2 Guide rate and question about gear meshing.

Roland Christen
 

If you can, please send me your e-mail directly to chris1011@... and I'll send you the information.

Roland



-----Original Message-----
From: Micheal Fields Jr via groups.io <mpfjr@...>
To: main@ap-gto.groups.io
Sent: Fri, Feb 12, 2021 2:24 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

I think it is because Daleen had my name ae instead of ea when she registered me?  Not sure.  I was talking to her about APCC Pro.  The invoice does have my name ae instead of ea too.  But that isn't anyone's fault.  My name is spelled some weird old Irish spelling.  And Yes please send me the instructions to adjust it a bit.  I took the covers off as you suggested and I can see how it works I believe.  My first instinct would be to break loose the top nut which has red lock on it.  Then back out the spring plunger bolt about 1/8th of a turn and then tighten up the nut again and test.    Awaiting genuine instructions.  

My serial is M20094  Invoice # 59566-S2

--
Roland Christen
Astro-Physics


Re: Mach2 Guide rate and question about gear meshing.

Roland Christen
 


My first instinct would be to break loose the top nut which has red lock on it.  Then back out the spring plunger bolt about 1/8th of a turn and then tighten up the nut again and test.
That's actually backwards on 2 counts. So don't adjust that top bolt.
I will send you some info as to how to adjust the backstop.

Roland


-----Original Message-----
From: Micheal Fields Jr via groups.io <mpfjr@...>
To: main@ap-gto.groups.io
Sent: Fri, Feb 12, 2021 2:24 pm
Subject: Re: [ap-gto] Mach2 Guide rate and question about gear meshing.

I think it is because Daleen had my name ae instead of ea when she registered me?  Not sure.  I was talking to her about APCC Pro.  The invoice does have my name ae instead of ea too.  But that isn't anyone's fault.  My name is spelled some weird old Irish spelling.  And Yes please send me the instructions to adjust it a bit.  I took the covers off as you suggested and I can see how it works I believe.  My first instinct would be to break loose the top nut which has red lock on it.  Then back out the spring plunger bolt about 1/8th of a turn and then tighten up the nut again and test.    Awaiting genuine instructions.  

My serial is M20094  Invoice # 59566-S2

--
Roland Christen
Astro-Physics


Re: Mach2 Guide rate and question about gear meshing.

Micheal Fields Jr
 

I think it is because Daleen had my name ae instead of ea when she registered me?  Not sure.  I was talking to her about APCC Pro.  The invoice does have my name ae instead of ea too.  But that isn't anyone's fault.  My name is spelled some weird old Irish spelling.  And Yes please send me the instructions to adjust it a bit.  I took the covers off as you suggested and I can see how it works I believe.  My first instinct would be to break loose the top nut which has red lock on it.  Then back out the spring plunger bolt about 1/8th of a turn and then tighten up the nut again and test.    Awaiting genuine instructions.  

My serial is M20094  Invoice # 59566-S2


Re: Mach2 Guide rate and question about gear meshing.

Roland Christen
 

The guide rate for all our mounts is recommended to be 1x. This allows the guiding loop to move the guide star in the most efficient manner back to the zero point without delay. This works perfectly with all of our mounts. Guiding at slower rates is not recommended.

The movement of the RA axis suggests that the backstop adjustment is a bit loose, but it has zero effect during actual operation. When the motors are active they will counter this and stiffen up the axis. On any spring loaded mount there is a small amount of pressure that pushes the worm into mesh with the worm wheel teeth. That pressure cannot be really heavy because it will wear the worm teeth at a high rate during slewing. For longevity we set the spring pressure high enough to ensure good contact, but not so high to cause excessive wear. As a result, the worm teeth can be made to back up slightly until the mechanism hits the backstop - that's the click click that you hear when you push the axis back and forth. You can see the action of the mechanism and the backstop if you remove the rear cover of the motor box and look inside.

Now it is possible that something else is loose, a very distant possibility would be the end play adjustment of the worm , but by the sounds of it, the backstop is set a bit too high. Offhand I cannot find your name on the list of mounts we shipped, so always include a serial number whenever you report any issues, if you can. If it is the backstop, that is easily remedied with a simple adjustment. It won't change how the mount operates in practice. I can send you some instructions that shows how the backstop is adjusted. But first, open the motor box cover and look inside.

None of this will affect your tracking, pointing or guiding in any way. Once the power is turned on, the encoders take over and keep the axes rigidly pointing to sub-arc sec levels to the place in the sky that you point your scope to. Regardless of weight or even imbalance. Of course the first reaction to any anomaly is to question tracking, guiding, pointing, etc., but i can assure you that it's a red herring.

Roland Christen
Astro-Physics Inc.



-----Original Message-----
From: Micheal Fields Jr via groups.io <mpfjr@...>
To: main@ap-gto.groups.io
Sent: Fri, Feb 12, 2021 1:09 pm
Subject: [ap-gto] Mach2 Guide rate and question about gear meshing.

What is the recommended guide rate setting?  My experience with premium mounts is that you reduce the guide rate.  The other mount I am using recommends .20 or .25 and I've been pretty happy with that.  

I think I saw somewhere the recommended with the Mach2 is 1.0x?  

But maybe your experience is different and you have a different value. I am using the latest nightly PHD2 with multi star guiding.


Next question is about gear meshing.  Specifically the RA.   I had rain predicted for today so I brought my gear inside and set it up in my kitchen so I could work on my camera spacing with a new precise parts adapter that came in the mail yesterday.  While I was carrying the mount into the house the saddle plate was up against my tummy and I could feel something that felt loose.  When I set it back on the tripod and bolted everything down tight, I  could wiggle the saddle and feel something click/clack .  I then followed the movement by eye and could see the entire RA had some movement.  The alignment marks for RA showed a bit of movement.   I didn't notice this before.  Now if I hold on to the OTA and wiggle it, I can hear it click/clack as it moves.  The weight is far under capacity with a C11 and a one shot color camera.  No filter wheels or rotators etc.    Here is a short video showing what I am experiencing.   What is interesting is that when making a model I was noticing some results that I thought were very strange depending on what side of the meridian it was  on but I assumed it was the fact I focus with my primary mirror so it moves.  However guiding was less than amazing too but again I had an excuse which was clouds moving in and that messes with the  guide stars.   So please take a look and tell me if this is normal.  Thanks!   Note: if you turn your volume up or use headphones you can hear it too.  https://youtu.be/JnhhFXc-uFw

--
Roland Christen
Astro-Physics

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