ZWO 60mm ASI120MM Guide system

[hubble space telescope]

hello everyone

i have the sky watcher esprit 120 and the heq6r pro mount and im considering to buy autoguider package to my setup and wanted to aky you if this package is good? and recommended? some reviews...  ZWO 60mm ASI120MM Guide system (ZWO – ASI120MM-s) also im considering the Orion Magnificent Mini Deluxe AutoGuider Package... which is better?

thank you very much!

Edited May 26, 2019 by hubble space telescope

[michael8554]

Can't comment on the cameras but their mounts are not optimum.

No need for adjustable mounts with current sensitive cameras, soft tipped screws lead to differential flexture and elongated stars.

Clamp the guidescope down to the mount as rigidly as you can - micron size flex in the guidescope leads to pixel moves on the imaging camera.

Michael

[hubble space telescope]

i didn't quite understand you...😅 i need smaller package?

Edited May 27, 2019 by hubble space telescope

[Nikolas74]

I am using the first one (ZWO) and i am very happy !!!

[hubble space telescope]

sound great! a lot of people on forums recommended on this camera also!

[michael8554]

Here's what a PHD2 Help File says about Differential Flex:

"Many imagers go into denial about this and say “I’ve got everything clamped down really tight, nothing is moving, it can’t be differential flexure.” Yes, it can be. Every single mechanical interface on the system - clamped, threaded, geared, set-screwed, whatever - has some possibility for movement. And all you need is a movement of a few microns to create a problem."

 

A few microns is a fraction of the thickness of a hair. Your guiding may look perfect, because PHD2 is failhfully following every move of the guidescope.

Unfortunately the Diff Flex means the perfect guiding is in fact wobbling the imaging scope  !

So the flex of adjustable rings is a problem that will not be apparent in your guide graphs.

Michael

[hubble space telescope]

so the rings on the guide scope of the ZWO will affect my guiding?

[michael8554]

That's like asking what day we will leave the EU......

Several have said the combination works fine, I'm just suggesting you avoid possible problems by using clamped rings.

Michael

[hubble space telescope]

oh!

ok, thank you very much for your help!!!

[hubble space telescope]

https://www.ontariotelescope.com/StarField-50mm-Guide-Scope-package_p_1487.html

and what about this package?