Date   

Re: Quick Release Gearbox Modification for Older AP1600

Jack Huerkamp
 

JimP, granted the AP1600 offers resistance to movement even when the clutch knobs are fully loosened.  In my case it takes between 10# and 15# of pull measured with an electronic fish scale to break the friction and get the mount to move in either RA or Dec.  I try to balance the mount by checking the pull needed in both directions and getting them as close to equal as possible.  But getting a precise balance is impossible.  That is why I asked if AP was going to offer an upgraded quick release worm mechanism like they have on the current AP1600 mounts.  Quickly releasing the worm from the worm gear allows for easy and precise balancing.

Jack Huerkamp


Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Roland Christen
 

Please do.

Rolando



-----Original Message-----
From: M Hambrick <mhambrick563@...>
To: main@ap-gto.groups.io
Sent: Tue, Mar 9, 2021 9:20 am
Subject: Re: [ap-gto] How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Hi Bryan

Your 1/2 page instruction sheet looks nothing like the instructions that came with my regreasing kit. The instructions that I got with my kit are 10 pages with photos. I am not sure if I need permission from A-P to upload a scanned copy of the instructions, but I will assume that if nobody from A-P tells me not to do so, I will upload them at the end of today.

Mike

--
Roland Christen
Astro-Physics


Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

M Hambrick
 

Hi Bryan

Your 1/2 page instruction sheet looks nothing like the instructions that came with my regreasing kit. The instructions that I got with my kit are 10 pages with photos. I am not sure if I need permission from A-P to upload a scanned copy of the instructions, but I will assume that if nobody from A-P tells me not to do so, I will upload them at the end of today.

Mike


Re: C14 and AP160 side by side?

Peter Bresler
 

I piggyback a SV130 on Planewave 12.5 on my 1200.


Re: C14 and AP160 side by side?

Francois Regembal
 

Thanks a lot for your feedback!

Kent: I don't intend on imaging with both scope at the same time. Having them side by side would simply allow me to shift the imager between scopes depending on targets (basically exoplanet transits thru the C14 and imaging thru the AP160)

Christopher: indeed an AP1600 would be happier but my name came up for this current AP1100 run so... Also, the mount will be mostly used in an observatory but I want to be able to take it to darker skies every now and then

Bryan: thanks for directing me to this way of fine tuning mount balancing!

Chip: great feedback too: I may need to allow for delays in ACP after slews

Thanks again!

Francois


Re: Mo videos :)

Harley Davidson
 

Thanks Andrew. I don't have a dome but would assume as long as the widest overall separation of either scope from the centerline of the Dec axis in PARK 3 isn't less than 13.5" in your case you should be fine. Someone please correct me if I am wrong.

tony

On 3/8/2021 11:02 AM, Andrew Jones wrote:
Hi Tony.

Great Videos. Thanks for sharing. A quick question if you don't mind. I have seen it mentioned several times here on the forum, that if someone plans on using a second scope for guiding (rather than an OAG) then ring mounting the guides scope to the primary OTA is not a good idea due to flexure. I heard that it is better to either mount the guide scope directly on the focuser using something like AP's 10 x 60 Vario Finder with Quick Release Guider Bracket Kit. (1060VGKIT) or to use a side-by-side mount like you show in your videos. I am curious if using a side-by-side setup would be a problem inside a dome? I have a 8" ExploraDome and I think the shutter opening is like 27" wide. So I guess as long as the two scopes do not span a distance more than this width then it should be OK. I was just curious if you or anyone else here has experience using a side-by-side in a dome?

Thanks again for sharing the videos. Always exciting to see other AP Mount setups. 

Andrew J


Re: How much dew is too much?

Dale Ghent
 

Heavy dew for one person is light dew for another, so some context of what that means might help. Have you ran into this problem or are wondering just in case?

I’ve never worried about my CP3. The heat it gives off seems to be enough to ward off the typical mid-Atlantic US, near-sea level temperate suburban climate types of dew that I experience. If I were worried about it, the only drastic measure I think I would take would be to wrap an old t-shirt or other cloth around it to help retain some heat and soak up any drips, and then be on my way. 

I imagine that the amount of heat that the CP4/5 puts off isn’t terribly different and perhaps might even be a little more than the CP3 owing to its embedded system. If you’re worried, use the power covers like Bill said. You can also get small RJ11/12-sized rubber inserts for the ST4 guide port if you aren’t using that. 

On Mar 9, 2021, at 03:46, Bob <astro@...> wrote:

This question is only in reference to the GTO mount, not the ota. So is it only the control box that should be protected against a heavy dew? Aside from the socket covers, does anyone use anything like a dew shield for the control box? Or is it not necessary?

Thanks
Bob


Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Sébastien Doré
 

Found this a while back. It’s the auto-adjusting gearbox version. Thought it might help.

https://m.imgur.com/a/f2ab2pY

Sébastien 


Re: How much dew is too much?

Bill Long
 

Not necessary. Use the plug covers though since they really aren't doing you any good in a bag. But, even in the absence of that, the CP boxes from AP are bullet proof. A believe Roland says only a direct lightning strike could harm them.

With that said though, they aren't waterproof. So don't leave them out in the rain, hurricane, tsunami, etc.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Bob <astro@...>
Sent: Tuesday, March 9, 2021 12:45 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-gto] How much dew is too much?
 
This question is only in reference to the GTO mount, not the ota. So is it only the control box that should be protected against a heavy dew? Aside from the socket covers, does anyone use anything like a dew shield for the control box? Or is it not necessary?

Thanks
Bob


How much dew is too much?

Bob
 

This question is only in reference to the GTO mount, not the ota. So is it only the control box that should be protected against a heavy dew? Aside from the socket covers, does anyone use anything like a dew shield for the control box? Or is it not necessary?

Thanks
Bob


Re: C14 and AP160 side by side?

weems@...
 

I have a C14 with carbon fiber tube and dew shield side by side with an AP 6”f9 on my 900. It’s fine for visual, but would be pushing it for photography. I have the slewing rate set at 600 and it doesn’t strain at all, with careful balance. But it does take a couple of seconds to damp. At one point I had them in some kind of symmetrical geometry so vibrations would pass back and forth between the tubes for more than ten seconds, with a long period beat frequency. But a weight on the tail of the refractor, and shifting it forward fixed that. The 900 is close enough to being usable for photos that I expect an 1100 would manage with some care in setting up. Of course, a 1600 would probably not be at all challenged by this load. 


Chip


Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Worsel
 

The instructions I received with the grease kit was 1/2 page (attached).

Seems like there is something missing; although this was a couple years ago.

I got the job done with this forum and online videos anyway.

Bryan


Re: C14 and AP160 side by side?

Worsel
 

Francois

I have a 14.5 iDK (33 kg) and a 130 apo (12 kg) on an 1100 mount.  No problems as far as the mount.

I balance by measuring the power draw in each axis.  https://www.astro-physics.com/cabppwm


Bryan


Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Joseph Beyer
 

Thanks, mine arrived late December 2017 so it's got some time to go.


Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Dale Ghent
 

It was original from 2008, so that factory grease was at least 12 years old. The worm grease was alright but the worm and spur gear grease was noticeably solidified and obviously in need of refreshing. Doing this exercise also let me discover some corrosion on one of the brass spur gear shoulder screws. All in all I learned a bit about the mount and feel pretty confident in servicing it or the 1100 that I have on order myself.

On Mar 8, 2021, at 20:00, Joseph Beyer <jcbeyer2001@...> wrote:

Dale,

How long had you run your mount before changing the grease. The original grease still looks to be in good condition.

Joe


Re: C14 and AP160 side by side?

Christopher Erickson
 

I have had my C14 and 130 on my 1100 and also on my 900.

However for a C14 and a 160, personally I would go for the 1600.


-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   

On Mon, Mar 8, 2021, 2:22 PM Kent Kirkley via groups.io <kgkirkley=aol.com@groups.io> wrote:
It can be done, the balancing. Do you intend to attempt to image thru both at the same time? I advise against that. No matter how well your tracking and guiding is, there will be flexure and at least one will result in trailed images.
FYI
Kent Kirkley


On Mar 8, 2021, at 6:08 PM, Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:


It should work if you can get it balanced well enough.

Rolando



-----Original Message-----
From: Val�rie-Fran�ois R�gembal <foudastro@...>
To: main@ap-gto.groups.io
Sent: Mon, Mar 8, 2021 5:04 pm
Subject: [ap-gto] C14 and AP160 side by side?

Hello all!

I'll soon receive a brand new AP1100 mount which I'll be using for my C14 EdgeHD and AP160 scopes.
Is it crazy to even consider mounting these two OTAs side by side on the AP1100? I should be right within the weight limit, including with my STT8300 CCD camera... (I realize the challenge of balancing such a monster setup).

Thanks!

Francois

--
Roland Christen
Astro-Physics


Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Joseph Beyer
 

Dale,

How long had you run your mount before changing the grease.  The original grease still looks to be in good condition.

Joe


Re: C14 and AP160 side by side?

Kent Kirkley
 

It can be done, the balancing. Do you intend to attempt to image thru both at the same time? I advise against that. No matter how well your tracking and guiding is, there will be flexure and at least one will result in trailed images.
FYI
Kent Kirkley


On Mar 8, 2021, at 6:08 PM, Roland Christen via groups.io <chris1011@...> wrote:


It should work if you can get it balanced well enough.

Rolando



-----Original Message-----
From: Val�rie-Fran�ois R�gembal <foudastro@...>
To: main@ap-gto.groups.io
Sent: Mon, Mar 8, 2021 5:04 pm
Subject: [ap-gto] C14 and AP160 side by side?

Hello all!

I'll soon receive a brand new AP1100 mount which I'll be using for my C14 EdgeHD and AP160 scopes.
Is it crazy to even consider mounting these two OTAs side by side on the AP1100? I should be right within the weight limit, including with my STT8300 CCD camera... (I realize the challenge of balancing such a monster setup).

Thanks!

Francois

--
Roland Christen
Astro-Physics


Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Roland Christen
 

Good idea to re-do the PE correction curve after re-doing the grease. It may have changed due to wear from the previous time you did it.

Rolando



-----Original Message-----
From: Dale Ghent <daleg@...>
To: main@ap-gto.groups.io
Sent: Mon, Mar 8, 2021 5:58 pm
Subject: Re: [ap-gto] How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

I'm not sure what the big deal is, John. Hardcopy instructions are included with the $25 grease kit that you can order over the phone from Astro-Physics. The paper instructions are certainly adequate alone; I don't think a video would add much besides just parroting what they say.

Here's my pictorial from when I regreased my Mach1 last summer.
https://imgur.com/a/xS3jzJf

/dale


> On Mar 8, 2021, at 18:23, John A. Sillasen <jasillasen@...> wrote:
>
> I must admit that I agree with having at least current and near current (Mach 1 and Later) version specific instructions + a video..
> Boy do I know how time consuming doing  manual is too. Past work life aside, I did not instruction manual with pictures for every step on how to install a Starlight Instruments two speed micro focuser on a Skywatcher 180 Maksutov Cassegrain. The default single speed was actually all metal with no plastic parts but for a high magnification scope,  it has to be a dual speed.
>
> Its a lot of work. The manual is online now,  Wayne has posted it at Starlight Instruments.
>
> That aside, aside. See what I did there?
>
> I cannot even find the generic instructions on the Astro-Physics Support Site. Not under current or legacy do I find a regrease set of instructions.
>
> Good job for a part timer to do or perhaps someone at home that the company trusts to do.  Its necessary because otherwise I'm sending my mounts back to be re-greased. I will not be doing it by myself now.
>
>
>
> John A. Sillasen
>
>
>







--
Roland Christen
Astro-Physics


Re: C14 and AP160 side by side?

Roland Christen
 

It should work if you can get it balanced well enough.

Rolando



-----Original Message-----
From: Val�rie-Fran�ois R�gembal <foudastro@...>
To: main@ap-gto.groups.io
Sent: Mon, Mar 8, 2021 5:04 pm
Subject: [ap-gto] C14 and AP160 side by side?

Hello all!

I'll soon receive a brand new AP1100 mount which I'll be using for my C14 EdgeHD and AP160 scopes.
Is it crazy to even consider mounting these two OTAs side by side on the AP1100? I should be right within the weight limit, including with my STT8300 CCD camera... (I realize the challenge of balancing such a monster setup).

Thanks!

Francois

--
Roland Christen
Astro-Physics

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