Date   

Re: initialization of Mach2

Chris White
 

Shouldn't matter. The absolute encoders always know where the mount is. 


Re: initialization of Mach2

M Hambrick
 

You should definitely start out the first time from Park 3 as Brian and Jeff have noted, but after you do the first-time initialization in Park 3 you may want to consider parking and unparking the mount from Park 2. If you have a portable setup where you attach the scope every time, the Park 2 position makes is a little easier to attach and remove the scope.

Mike


Re: Barnard 62 & 63 Plus a Bunch of LDN Objects

R Botero
 

Beautiful Dean. Great catch from your location. 

Roberto


Re: initialization of Mach2

 

yes, you set it at that position and then unpark from park 3



On Wed, May 25, 2022 at 9:31 PM Jeffc <jeffcrilly@...> wrote:
I point mine to Polaris.  

Park 3 which is (my understanding) the Home position. 

Like this:

image


On May 25, 2022, at 9:08 PM, holmescheatham@... wrote:



I have finally received my new Mach2GTO. I read both instruction manuals, have everything installed, balanced and polar aligned. I am ready to power up for the first time.   I am unsure about where the mount should be pointed for the first initialization. 



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Re: initialization of Mach2

Jeffc
 

I point mine to Polaris.  

Park 3 which is (my understanding) the Home position. 

Like this:

image


On May 25, 2022, at 9:08 PM, holmescheatham@... wrote:



I have finally received my new Mach2GTO. I read both instruction manuals, have everything installed, balanced and polar aligned. I am ready to power up for the first time.   I am unsure about where the mount should be pointed for the first initialization. 



Sent from EarthLink Mobile mail



initialization of Mach2

prestoncheatham
 

I have finally received my new Mach2GTO. I read both instruction manuals, have everything installed, balanced and polar aligned. I am ready to power up for the first time.   I am unsure about where the mount should be pointed for the first initialization. 



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Barnard 62 & 63 Plus a Bunch of LDN Objects

Dean Jacobsen
 

This is the first Milky Way shot for me this year and a chance to check off some more dark nebula on my to-do list.

This image is centered on Barnard 63 and includes Barnard 62 as well as a good number of dark nebula from Beverly Lynds' Dark Nebula catalog:

https://www.astrobin.com/full/7bes64/0/

Although my imaging location is relatively far south here in Southern California, at -20 degrees this field is pretty far down in the weeds so to speak.  None of the small field stars in the subs were sharp.  The seeing was pretty bad.

Imaged with the Mach2

- 73 x 180 seconds, unguided
- FSQ-106 @ f/5 with the ASI2600MC
--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


Re: Mach 2 basic operation

eckhard.voelcker@...
 

I am using NINA and the Mach2. The mount is transparent - once set up it is not there. 

I have the pole master camera attached to the mount. After a decent polar alignment I switch to NINA. I use the NINA sky catalog to look for my target and use the NINA "slew and center". The slew will not be perfect (I have no model), but with plate solving it takes 2 or 3 slews to have the telescope point perfectly to the target. Then I do a NINA PA at the position I am at! I then slew to the traget again and switch back to APCC to start the Model Builder. I can see the current position of the telescope in the graphical interface when I build the model, so with just some clicks I have selected a couple of points on my targets course through the sky. It takes approximately 10 minutes to build a small model. Afterwards it is just imaging and letting the mount and APCC Pro do their thing. This small model is perfect for mobile use because it gives you excellent tracking in a short setup time. 

Here is a link to the online APCC manual that explains the model:  APCC Pro DEC Arc tracking.

With NINA you can even automate the model building process and control APCC through NINA: astro-physics tools for NINA. 

APCC supports horizons and as NINA uses the same file format, they share the horizon file. 

Clear skies,
Eckhard


Re: APCC Pro model details #APCC

Brent Boshart
 
Edited

To calculate your total polar alignment error in arcminutes.   PA error = SQR((Polar Axis Elevation/60)^2 + (Polar Axis/60)^2 )  where SQR is square root and ^2 means squared.


APCC Pro model details #APCC

eckhard.voelcker@...
 

 

Is there an explanation somewhere what these values mean and what are good or bad values? How can I f.e. calculate my current polar alignment error from these values? 

Thanks and regards,
Eckhard 


Re: Doubt about the modeling when changing cameras #Mach2GTO

Worsel
 


Re: CP3 power connector (12V)

David Kensiski
 

So how about the cable end? Got the part number for that? 


On Tue, May 24, 2022, 5:29 PM drgert1 via groups.io <drgert1=yahoo.com@groups.io> wrote:

Hi Mike,

Yes, that looks like the right part. Digikey calls it "Power Barrel Connector Jack 2.50mm ID (0.098"), 5.50mm OD (0.217") Panel Mount".
I looked at the CP3 today and it seems it will be a bit of a task to unmount the various parts to get to the solder connection for the connector.
Maybe this will wait until it breaks. Also a call for instructions to AP might be in order.

Thanks& Clear Skies,
Gert


Re: Doubt about the modeling when changing cameras #Mach2GTO

Dean Jacobsen
 

I think that if you can swap out the camera without changing anything else you should be OK.  Try it and let us know what happens.  The worst that could happen is that you would have to redo your model. 🙂
--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


Re: CP3 power connector (12V)

drgert1
 

Hi Mike,

Yes, that looks like the right part. Digikey calls it "Power Barrel Connector Jack 2.50mm ID (0.098"), 5.50mm OD (0.217") Panel Mount".
I looked at the CP3 today and it seems it will be a bit of a task to unmount the various parts to get to the solder connection for the connector.
Maybe this will wait until it breaks. Also a call for instructions to AP might be in order.

Thanks& Clear Skies,
Gert


Doubt about the modeling when changing cameras #Mach2GTO

Marcelo Figueroa
 

I am getting a new camera, the ASI 533 mono and the modeling was done with an ASI 1600.
 
Is it necessary to redo the modeling with the new camera? Both cameras weigh about the same and my theory is that it shouldn't matter, because once the modeling is done the mount has no idea which camera is being used.
 
The mount is a Mach 2.

Thanks,


Re: Mach 2 basic operation

Jeffc
 

I will need to give PA in NINA a try.. I’m fairly new to NINA… I’ve been using SGPro for the past year and Maxim before that.  

(But yeah, with the polemaster, no need to disconnect the other cameras… I agree that would be ridiculously painfula.)

-jeff


On May 23, 2022, at 8:13 PM, midmoastro <teche70@...> wrote:

Jeff may be correct about Polemaster and Sharpcap and I dont want to detract from that, but what I found when using Sharpcap is I did not like to connect my camera to that app, then disconnect if I am going back to NINA for imaging. I found NINA/TPPA to be a replacement for SharpCap PA and now I dont have to switch my camera back and forth with different apps. TPPA has worked well for me so far and its very quick. If you are using NINA for imaging, I would at least give it a try first.


Re: Mach 2 basic operation

Andrew Burwell
 

I would likely use NINA for this. I have a Polemaster on one of my Rainbow Astro mounts that I could borrow, but I suppose the software versions of polar alignment are good enough for a dual tracking mount.


Re: Mach 2 basic operation

Andrew Burwell
 

I am mainly imaging and portable for now. But have started the process for a remote observatory which is supposed to start being built mid summer. I’ll have two piers, one for the Mach2 and one for the 10M. I’ll be running an EdgeHD 11 at 2800mm on the Mach2 until I decide to get PW12 to replace it. I assume, based on the specs, it should have no problems with that scope. 

I can’t really run a full model with the 10M right now due to my back yard field of view. But I can run a partial model, or and object specific model. And if APCC supports custom horizons that will make it easy for me. I need to delve into that manual to check out all the features.

-Andrew


Re: Mach 2 basic operation

midmoastro
 

Jeff may be correct about Polemaster and Sharpcap and I dont want to detract from that, but what I found when using Sharpcap is I did not like to connect my camera to that app, then disconnect if I am going back to NINA for imaging. I found NINA/TPPA to be a replacement for SharpCap PA and now I dont have to switch my camera back and forth with different apps. TPPA has worked well for me so far and its very quick. If you are using NINA for imaging, I would at least give it a try first.


Re: Mach 2 basic operation

Jeffc
 

If you are mainly imaging… and portable…. I suggest getting a polemaster for polar alignment, and use it with SharpCap.

The pole master + sharp cap does polar alignment in about 5 minutes with some simple tweaking the alt and az on the mount.
Alternatively a guide scope can be used with sharpcap… but on the mach2 I didn’t bother with the guidescope.   I’ve not compared this approach to the (iirc) NINA three star approach.

The other alternative for polar alignment is the RAPAS, which I use with other mounts when doing visual.
(I do some outreach work at the local observatory).

I do have a keypad, but never use it when imaging… I do use it for visual tho.

There’s a couple options to creating the sky model when “portable”:
- I’ve done a 52 point model which takes about 30 minutes to run.. and is appropriate for portable operation.
- NINA has a plugin (the author is on this list), which will do a “Dec Arc” model and (I think) is more precise, but only covers the portion of the sky you are imaging for a specific object (RA / Dec)

Anyhow.. the mach2 is great.  Initially I didn’t use APCC/APPM and stuck with my “old workflow”… but then when I spent the time to learn APCC/APPM and realized it is a big plus.   

One of my configurations is a 12” Meade ACF with a Lumicon GEG / Reducer for about 1500mm focal length, and a fairly heavy camera + focuser… I think I might be at about the weight limit cuz there isn’t much room for more counterweights.   This setup seems to work just fine.   

-Jeff




On May 23, 2022, at 4:44 PM, Andrew Burwell via groups.io <andrew_burwell@...> wrote:

This was me. I honestly didn't consider asking here as I don't have the mount yet. But it's very nice to know that the workflow is essentially the same. I'm a bit overwhelmed at the documentation available. And maybe the complexity I'm seeing is just the initial software setup, though I'm not sure as I don't have it yet. I'm still very much looking forward to getting my hands on one and trying it out.

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