Topics

#Mach2GTO - Can It Handle TEC 180FL? #Mach2GTO

tranathi@...
 

I know many had suggested that the 1100gto to be the best candidate for the TEC 180FL refractor. However, I have checked AP’s website spec sheet for Mach2GTO mount and it does look like the TEC 180FL is within range - both in weight & dimension. I’m not really a big fan of mount overkill idea nor ready to drop $15k for a mount. So, my question is, can the MACH2GTO handle TEC 180FL at ease without any concern for longterm effect/issue? Per TEC’s website, the 180FL OTA should be very close to 40 pounds.

jimmyjujames
 

1314 keystrokes follow
 
In some cases the length is more important than the weight.
 
Example:
 
Need a broomstick or something light, strong and a few feet long
Put a 10 or 20 pound counter weight on a horizontal broomstick so you can slide weigh close to you.
Hold arms out horizontal holding broomstick level with ground and counter weight close to hands.
 
Notice the torque on your shoulders to keep broomstick level with ground.
 
Slide counter weight out a foot from your hands
 
Notice the torque on your shoulders has increased to keep broomstick level with ground.
 
Slide counter weight out another foot from your hands
 
Notice the torque on your shoulders has increased to keep broomstick level with ground.
 
If the weight is too large or the distance from shoulders to weight is too long,
 you will eventually not be able to keep the broomstick and weight level with the ground.
The Torque on your shoulders is too much for your shoulders' muscles.
 
In this example your shoulders are your mounts' worm and worm-wheel.
 
Torque is a static and linear force and zeroed out if balanced.
 
Moment of Inertia (resistance to change in speed or direction) varies with
the distance squared from worm.
 
Length of scope can be more important than the weight of scope.
 
Jimmy
As always I may be wrong again.
 

uncarollo2 <chris1011@aol.com>
 

How much else will you be adding to the scope? guide scope, camera, other peripherals?

Rolando



-----Original Message-----
From: tranathi via groups.io <tranathi@...>
To: main@ap-gto.groups.io
Sent: Sat, Jul 4, 2020 2:22 am
Subject: [ap-gto] #Mach2GTO - Can It Handle TEC 180FL?

I know many had suggested that the 1100gto to be the best candidate for the TEC 180FL refractor. However, I have checked AP’s website spec sheet for Mach2GTO mount and it does look like the TEC 180FL is within range - both in weight & dimension. I’m not really a big fan of mount overkill idea nor ready to drop $15k for a mount. So, my question is, can the MACH2GTO handle TEC 180FL at ease without any concern for longterm effect/issue? Per TEC’s website, the 180FL OTA should be very close to 40 pounds.

tranathi@...
 

It will be only for visual with typical add-ons (finderscope, rings & plate, diagonal, eyepiece, etc.).  The 180FL will be about ~47 inch long. I saw that it’s still within the length & weight curve/graph posted on AP’s website for the Mach2. I just want to make sure that mount can be the permanent workhorse for the 180FL without worrying that the scope causes undue stress to it in the long run.
Thanks

dvjbaja
 

I would expect the Mach 2 would carry your 180, but moment arm vibrations at the eyepiece is why folks recommend the beefer 1100 bearings.   The 1100 also breaks into very tidy lightweight components for easy transportation.    Nice decisions to have. 

Jg



Sent via the Samsung Galaxy Note9, an AT&T 5G Evolution capable smartphone


-------- Original message --------
From: "tranathi via groups.io" <tranathi@...>
Date: 7/4/20 2:53 PM (GMT-08:00)
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] #Mach2GTO - Can It Handle TEC 180FL?

It will be only for visual with typical add-ons (finderscope, rings & plate, diagonal, eyepiece, etc.).  The 180FL will be about ~47 inch long. I saw that it’s still within the length & weight curve/graph posted on AP’s website for the Mach2. I just want to make sure that mount can be the permanent workhorse for the 180FL without worrying that the scope causes undue stress to it in the long run.
Thanks

uncarollo2 <chris1011@aol.com>
 

The scope won't stress the mount, but it may not be as steady for visual as you might want. That's why i would go with the bigger 1100. You won't need the encoders on that mount, so it's actually a bit less expensive. Also important is the pier or tripod that the mount sits on.

For visual, the rule of thumb for refractors was that the mount's worm wheel diameter should be same size as the scope's lens aperture. Smaller worms take longer to settle than larger worms. That was the rule of thumb back last century ;^))

Rolando



-----Original Message-----
From: tranathi via groups.io <tranathi@...>
To: main@ap-gto.groups.io
Sent: Sat, Jul 4, 2020 4:53 pm
Subject: Re: [ap-gto] #Mach2GTO - Can It Handle TEC 180FL?

It will be only for visual with typical add-ons (finderscope, rings & plate, diagonal, eyepiece, etc.).  The 180FL will be about ~47 inch long. I saw that it’s still within the length & weight curve/graph posted on AP’s website for the Mach2. I just want to make sure that mount can be the permanent workhorse for the 180FL without worrying that the scope causes undue stress to it in the long run.
Thanks

tranathi@...
 

Thank you, Roland. Seems like the 1100 + ATS tripod would be a good long-term investment for me then.

Benoit Schillings
 

I never had any regrets to go to the 1600... it is still pretty easy
to put together without help.

-- benoit

On Thu, Jul 9, 2020 at 8:31 PM tranathi via groups.io
<tranathi=yahoo.com@groups.io> wrote:

Thank you, Roland. Seems like the 1100 + ATS tripod would be a good long-term investment for me then.

dvjbaja
 

Amen.  :-)



Sent via the Samsung Galaxy Note9, an AT&T 5G Evolution capable smartphone


-------- Original message --------
From: Benoit Schillings <benoit.schillings@...>
Date: 7/9/20 9:25 PM (GMT-08:00)
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] #Mach2GTO - Can It Handle TEC 180FL?

I never had any regrets to go to the 1600... it is still pretty easy
to put together without help.

-- benoit

On Thu, Jul 9, 2020 at 8:31 PM tranathi via groups.io
<tranathi@...> wrote:
>
> Thank you, Roland. Seems like the 1100 + ATS tripod would be a good long-term investment for me then.
>