Re: Calculate flattener spacing for new camera from old camera

Mike Dodd

On 9/1/2020 8:37 PM, inoddy@hotmail.com wrote:
I have a 13035FF flattener and a camera with correct spacing and correct
focus. I want to find the correct spacing for a new camera with unknown
sensor plane depth.
Truly unknown? Have you no specs for both cameras? If not, perhaps you can look into the camera and estimate the difference in spacing to the sensors.

My idea is to replace the old camera with the new camera and find how
far the focus changes in mm. The change in focus distance must be
mathematically related to the change in spacing that I need. I doubt
that it is 1 to 1 because the flattener changes the focal length of the
scope.
Are you over-analyzing this? Why not install the new camera and point the scope to a bright star or the Moon, and then focus it?

When I installed a new camera, I simply adjusted the focuser until the target was in focus, and that was it. I never calculated anything in advance.

--- Mike

Calculate flattener spacing for new camera from old camera

Nick Iversen

I have a 13035FF flattener and a camera with correct spacing and correct focus. I want to find the correct spacing for a new camera with unknown sensor plane depth.

My idea is to replace the old camera with the new camera and find how far the focus changes in mm. The change in focus distance must be mathematically related to the change in spacing that I need. I doubt that it is 1 to 1 because the flattener changes the focal length of the scope.

Does anyone know the calculation?

Re: Drift Alignment To Help With Unguided Images

Worsel

Curtis

One of the advantages to a corrected Dall-Kirkham (either PW of AGO) is the spherical secondary, which means collimation is easier to dial in than an SCT.  I check collimation on the 14.5" AGO every 6 months.  It rarely needs adjustment, but if it does, it is easy.

I use the A-P 27TVPH occasionally as well.  Brings the f ratio down to to about f/5.  (0.75 x 6.7)   Vignetting occurs (full-frame DSLR), even given the big image circle of the 14.5, but that can be managed.

Bryan

Re: Drift Alignment To Help With Unguided Images

CurtisC

The guy who makes AG Optical's optics is a neighbor and personal friend of mine, so -- just speaking for myself -- I'd look at AGO first.  As for PlaneWave -- they moved from Calif. to Michigan, which converts delivery from a simple drive to the factory into a \$1000 crating and shipping adventure.  Of course, I'd have to pay for shipping an AGO scope, too, since his plant is in Alabama.  But, of the two telescope manufacturers, the other consideration puts AGO at the top of my personal list.

HOWEVER -- when I was throwing around retirement money a few years ago, to build my observatory and buy my equipment, I specifically chose a refractor (TEC140ED), because I didn't want to worry about flopping mirrors or sagging secondaries and endless attempts to get the collimation just right.  I don't have enough remaining years to waste my time on that.  My only regret is that I like galaxies.  The TEC140ED is fine for extended nebulae and galaxy clusters, but not so much for capturing details of individual galaxies.  I have occasionally looked at the EdgeHD 11 as an economical alternative to get some additional aperture, without exceeding the capabilities of my Mach1GTO mount, but the preceding discussion pretty much nixes that idea.

Re: At-GTO Group can't shrink APV2 window after expamd in Maxim DL

Roland Christen

Leave "Expand Window" unchecked and you'll be fine.

Rolando

-----Original Message-----
From: Peter Nagy <topboxman@...>
To: main@ap-gto.groups.io
Sent: Tue, Sep 1, 2020 3:53 pm
Subject: Re: [ap-gto] At-GTO Group can't shrink APV2 window after expamd in Maxim DL

I was able to reproduce to show "SHRINK" button.

1) With "Expand window to show all controls" already checked, click on "EXPAND" button.
2) Window expands properly but can no longer shrink.
3) Uncheck "Expand window to show all controls".
4) The window partially shrinks and "<<<" "NEXT" button show.
5) Re-check "Expand window to show all controls".
6) Window expands properly BUT "SHRINK" button shows.
7) Click on "SHRINK" and window shrinks properly and then "EXPAND" button shows.
8) Go to step #1 and repeat.

This does not bother me at all but kind of looks a bit unprofessional.

Peter

Re: Drift Alignment To Help With Unguided Images

Dominique Durand

Hi Tony,
I suppose that for these 2 objects the poses were not very long 1 or 2 'maximum. In fact it is more for the modeling and therefore the follow-up afterwards that I could have a problem, because I never do a meridian flip during my shots, I work if necessary with the meridian shift -1 or -2h.
With the following model I have correct tracking corrections but may not be as smooth as would be desirable. On the other hand, the score remains perfectible. With 74 points, clouds having bugged for 18 points, the model is certainly not complete enough.

This is what the Crescent (NGC6888) gives, done with 360 secondes poses.
https://cdn.astrobin.com/thumbs/5K8V23dxt_6W_1824x0_YoLUSfeR.jpg

Re: At-GTO Group can't shrink APV2 window after expamd in Maxim DL

Peter Nagy

I was able to reproduce to show "SHRINK" button.

1) With "Expand window to show all controls" already checked, click on "EXPAND" button.
2) Window expands properly but can no longer shrink.
3) Uncheck "Expand window to show all controls".
4) The window partially shrinks and "<<<" "NEXT" button show.
5) Re-check "Expand window to show all controls".
6) Window expands properly BUT "SHRINK" button shows.
7) Click on "SHRINK" and window shrinks properly and then "EXPAND" button shows.
8) Go to step #1 and repeat.

This does not bother me at all but kind of looks a bit unprofessional.

Peter

Re: At-GTO Group can't shrink APV2 window after expamd in Maxim DL

Ray Gralak

See the screenshot below. The answer is to uncheck the option:

“Expand window to show all controls.”

-Ray Gralak

Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro

Author of PEMPro V3:  https://www.ccdware.com

Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

> -----Original Message-----

> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joseph Bianco

> Sent: Monday, August 31, 2020 1:41 PM

> To: main@ap-gto.groups.io

> Subject: [ap-gto] At-GTO Group can't shrink APV2 window after expamd in Maxim DL

>

> Using Maxim DL i connect to the telescope and when the APV2 Driver v5.30.10 appears I can press the EXPAND

> >>>>> button and after the expand I can not shrink back to the single window.  Am I missing some feature that

> should be turned on?

>

> Joseph

Re: At-GTO Group can't shrink APV2 window after expamd in Maxim DL

Mike Dodd

On 9/1/2020 1:50 PM, Peter Nagy wrote:
I'm seeing the same thing. There used to be a "SHRINK" button after
clicking on "EXPAND" button but not anymore.
I've attached a screen shot of my v5.30.10 expanded. The "shrink" button is to the left of the "Next >>>" button, and shows only "<<<".

Do you see this?

--- Mike

Re: At-GTO Group can't shrink APV2 window after expamd in Maxim DL

Peter Nagy

I'm seeing the same thing. There used to be a "SHRINK" button after clicking on "EXPAND" button but not anymore.

Peter

Re: At-GTO Group can't shrink APV2 window after expamd in Maxim DL

Mike Dodd

Do you see a <<<<< button in the main window after the >>>>> button expands? I see this, and that's the way to close the expanded window and return to the normal window.

What do you see?

--- Mike

Re: At-GTO Group can't shrink APV2 window after expamd in Maxim DL

CurtisC

I don't have a solution for your problem -- sorry -- but something I've never figured out is where the V2 window goes when I minimize it.  It vanishes.  If I've minimized it and then I click on the ASCOM symbol, I get something that shows the current mount position etc., but it's not the V2 window.

Re: Hand controller cables are cracking open

Roland Christen

We don't buy the cable, it comes with the keypad which we buy from our US manufacturer. We don't know or have control of where they purchase the individual parts. However, i do believe that the new cables are more robust than those of 20 years ago.

Rolando

-----Original Message-----
From: Peter Bresler via groups.io <PABresler@...>
To: main@ap-gto.groups.io
Sent: Tue, Sep 1, 2020 10:03 am
Subject: Re: [ap-gto] Hand controller cables are cracking open #Keypad

Same thing happened to mine. They really need to get a better supplier of that cable. Actually first I stripped off all the old covering and re-wrapped it with electrical tape, saved up, and spent the \$80.00 for a new cable.

Re: Hand controller cables are cracking open

Michael Hambrick <mike.hambrick@...>

I wonder if maybe they have already switched to a different supplier. The cable on my keypad (purchased in 2017) has a matte finish and is very flexible. When did you buy your controller ?

Unfortunately, most electronic components today are manufactured in China, and in my experience their quality is very inconsistent. You will generally get more consistent quality for components coming from Korea, Japan, and sometimes Tiawan, but in many cases the only option is China.

Best Regards

Michael Hambrick
ARLANXEO
TSR Global Manufacturing Support
PO Box 2000
Orange, TX 77631-2000
Phone: +1 (409) 882-2799
email: mike.hambrick@...

Re: Upgrading CP4 Firmware Question re "full initialization"

Roland Christen

What is meant by a "full initialization"? I turned APCC back on and connected the mount
What you did is a full initialization.

Rolando

-----Original Message-----
From: Tony Benjamin <tonybenjamin@...>
To: main@ap-gto.groups.io
Sent: Mon, Aug 31, 2020 10:10 pm
Subject: [ap-gto] Upgrading CP4 Firmware Question re "full initialization"

I needed to upgrade the CP4 software to the latest ver 14 (I was on 11) Went through the procedure listed in the .pdf of the software download and am wondering about the last item in the .pdf which says:

What is meant by a "full initialization"? I turned APCC back on and connected the mount and all looked normal with the Firmware showing the new ver 14. So, is this just old documentation or do I need to do something further?

Re: Hand controller cables are cracking open

Peter Bresler

Same thing happened to mine. They really need to get a better supplier of that cable. Actually first I stripped off all the old covering and re-wrapped it with electrical tape, saved up, and spent the \$80.00 for a new cable.

Re: Upgrading CP4 Firmware Question re "full initialization"

Tony Benjamin <tonybenjamin@...>

I never powered down, just opened APCC after the upload and all looked well. Always glad when there is no hitches J.

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: August 31, 2020 8:56 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Upgrading CP4 Firmware Question re "full initialization"

I just upgraded mine as well, and I just rebooted the CP4 and APCC prompted me to initialize from last parked.

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Tony Benjamin <tonybenjamin@...>
Sent: Monday, August 31, 2020 8:10 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-gto] Upgrading CP4 Firmware Question re "full initialization"

I needed to upgrade the CP4 software to the latest ver 14 (I was on 11) Went through the procedure listed in the .pdf of the software download and am wondering about the last item in the .pdf which says:

What is meant by a "full initialization"? I turned APCC back on and connected the mount and all looked normal with the Firmware showing the new ver 14. So, is this just old documentation or do I need to do something further?

Re: Upgrading CP4 Firmware Question re "full initialization"

Tony Benjamin <tonybenjamin@...>

Thanks....I like simplicity :)

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Ray Gralak
Sent: August 31, 2020 8:24 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Upgrading CP4 Firmware Question re "full initialization"

Hi Tony,

Just power cycling the CP4 is good enough.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf
Of Tony Benjamin
Sent: Monday, August 31, 2020 8:11 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Upgrading CP4 Firmware Question re "full initialization"

I needed to upgrade the CP4 software to the latest ver 14 (I was on
11) Went through the procedure listed in the .pdf of the software download and am wondering about the last item in the .pdf which says:

What is meant by a "full initialization"? I turned APCC back on and
connected the mount and all looked normal with the Firmware showing
the new ver 14. So, is this just old documentation or do I need to do something further?

Re: Upgrading CP4 Firmware Question re "full initialization"

Bill Long

I just upgraded mine as well, and I just rebooted the CP4 and APCC prompted me to initialize from last parked.

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Tony Benjamin <tonybenjamin@...>
Sent: Monday, August 31, 2020 8:10 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-gto] Upgrading CP4 Firmware Question re "full initialization"

I needed to upgrade the CP4 software to the latest ver 14 (I was on 11) Went through the procedure listed in the .pdf of the software download and am wondering about the last item in the .pdf which says:

What is meant by a "full initialization"? I turned APCC back on and connected the mount and all looked normal with the Firmware showing the new ver 14. So, is this just old documentation or do I need to do something further?

Re: Upgrading CP4 Firmware Question re "full initialization"

Ray Gralak

Hi Tony,

Just power cycling the CP4 is good enough.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Tony Benjamin
Sent: Monday, August 31, 2020 8:11 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Upgrading CP4 Firmware Question re "full initialization"

I needed to upgrade the CP4 software to the latest ver 14 (I was on 11) Went through the procedure listed in the
.pdf of the software download and am wondering about the last item in the .pdf which says:

What is meant by a "full initialization"? I turned APCC back on and connected the mount and all looked normal
with the Firmware showing the new ver 14. So, is this just old documentation or do I need to do something
further?

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