pushing the edge of the envelope

[Simon Dunsmore]

Hi Folks,

 

Just for fun, lets say i had a 250 dob OTA and a Heq5 pro mount, would this be a happy or at least tolerant marriage?

I actually do have these, but usually use a 130PDS on the mount. I was just looking at the two scopes sitting side by side wondering.

Thoughts?

Cheers

Simon

Edited February 15, 2021 by Simon Dunsmore

[CraigT82]

You could probably just about get by for some wobbly visual or even lucky imaging.  You'd need a fair few counterweights!

[vlaiv]

Nope.

Been there, done that with 8" dob OTA and, nope - don't do it.

Yes, that is imaging setup with 3x5Kg counterweights. What do you think wind does to a setup like that?

 

[Simon Dunsmore]

21 minutes ago, vlaiv said:

Nope.

Been there, done that with 8" dob OTA and, nope - don't do it.

Yes, that is imaging setup with 3x5Kg counterweights. What do you think wind does to a setup like that?

 

Fair play 🤣😂

Just how bad was it?? 

[michael.h.f.wilkinson]

On my Vixen GP, and GP-DX mounts, the 6 "Schmidt Newton works well, but I wouldn't want to go beyond that. It is not just the weight, but also the tube length and associated torque that will pose big problems.

[vlaiv]

7 minutes ago, Simon Dunsmore said:

Fair play 🤣😂

Just how bad was it?? 

It did work. On a quiet night I managed to guide at about 1" RMS. This was before I modded my Heq5.

Fact that I needed 15Kg of CWs made me feel really uneasy. Mount should be good for up to 15Kg I think - and OTA alone here is 11Kg. Add guide scope, rings and all that - and I was really conscious of the weight of setup all the time and always looked it something would give. I would say that setup was on upper limit even as far as visual goes.

I'm guessing that 10" is even heavier - at least few Kg. That is really going to push the mount past it payload capacity.