Date   

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

Dean Jacobsen
 

Thanks Karen and Roberto.  I always look forward to this time of year when I can try and add a few more of the dark nebula that are low in the south to my collection. 
--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


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

Karen Christen
 

That’s really nice, Dean!

Karen

AP

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Dean Jacobsen
Sent: Wednesday, May 25, 2022 6:10 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Barnard 62 & 63 Plus a Bunch of LDN Objects

 

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/


--
Karen Christen
Astro-Physics


Re: initialization of Mach2

Dean Jacobsen
 

On Wed, May 25, 2022 at 09:08 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. 

 

Also, congratulations on your new mount.  You are going to love the simplicity and the precision.  Have fun!
 
--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


Re: initialization of Mach2

Roland Christen
 

There is no mechanical initialization required. No unparking from any parks required - the mount is ready to roll the moment you apply power. Once you connect the mount to your planetarium app using the ASCOM driver, all you need to do is slew to a star or deep sky object. The mount does the rest.

Roland Christen
Astro-Physics


-----Original Message-----
From: holmescheatham@...
To: mainap-gtogroupsio <main@ap-gto.groups.io>
Sent: Wed, May 25, 2022 11:07 pm
Subject: [ap-gto] initialization of Mach2

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


--
Roland Christen
Astro-Physics


Re: initialization of Mach2

Sébastien Doré
 


That is correct. The Mach2 always know where it's at. Even with clutches loose.

The only need for homing would be if you made a bad sync/recal at some point (but if you platesolve that's not likely to happen). You can then home it (which indeed sends the mount to park 3) via the AE tab in APCC or with the Keypad and you are back in business. Simple as that.

Sébastien



Re: APCC Pro model details #APCC

Andrew J
 

+1. I have wondered what all these values mean as well. 


Re: initialization of Mach2

Dean Jacobsen
 
Edited

On Thu, May 26, 2022 at 03:41 AM, Chris White wrote:
Shouldn't matter. The absolute encoders always know where the mount is. 
I agree.  I'll wait to hear from more knowledgeable persons but I have never unparked my Mach2 from any park position like I used to do with may AP900.  I just set up the mount and initialize it in whatever position it happens to be in.

My setup routine is:
1. initialize the mount with APCC to one of my pre-set locations. 
2. Do an initial alignment with the RAPAS. 
3. Do another alignment with SharpCap. 
4. Connect to TheSky and use TheSky to slew to a bright star. The star is always on the chip and pretty close to center.
5. Center the star with the crossharis in my image capture program and perform a Star Sync with TheSky.

That's it.  A lot simpler that with my AP900 because the mount already has a good idea of where it is pointing.  I just have to refine things a little after the polar alignment.

When I am done with the mount, I just turn it off.  With the AP900 on multi night trips I would park the 900 in Park3 so the mount would know where it is on the next night.  I don't have to do that with the Mach2.  I just turn it off.  I can loosen the clutches and re-balance when the mount is powered down and the Mach2 is dead-on when I start it back up.
--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


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. 



Sent from EarthLink Mobile mail





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. 



Sent from EarthLink Mobile mail



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/

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