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Orion Sirius EQ-G (Sky-Watcher HEQ5 Syntrek)

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#1 xcy

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Posted 18 July 2008 - 10:18 AM

Is the Orion Sirius EQ-G non GoTo mount (Sky-Watcher HEQ5 Syntrek) a much better mount than the CG-5/EQ5 to justify the higher price? What are the main differences?

#2 ccs_hello

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Posted 19 July 2008 - 04:20 PM

Hi XCY,

The numbering scheme really confuses you, isn't it :) :) ?

At one time,
CG3 = EQ2
CG4 = EQ3 (or EQ3-2)
CG5 = EQ4

This did not play too well, since few people compare mounts capacity just by numbers :) :).

So later EQ4 magically morphed into EQ5 with minor changes (e.g., tripod leg size). I.e., EQ5 roughly equals to EQ4. But the mount head came from the same heritage.

After the successful CG5/EQ5 product, a new product line was introduced: EQ6/Atlas.

Then a new mount was produced somewhere in between EQ5 and EQ6 (closer to EQ6 than to EQ5). Now there is a problem, what should we call it? EQ5.5, baby-EQ6, EQ6-jr, EQ5-sr, NEQ5, LEQ6, ... :) :). Now you can guess what it called today.

HEQ5 shares a lot of EQ6 design but is smaller.
EQ-G non-GOTO version of the HEQ5 still has the same intelligent motor controller, hybrid stepper-motors, and is EQMOD ready.


Clear Skies!

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#3 Doug76

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Posted 20 July 2008 - 02:06 AM

The rating of the Sirius mount is about the same as the CG-5, but as it uses the same motors and gears as the Atlas, you know it will be quieter and I wouldn't doubt, somewhat stronger. Is the cost difference justified? I can't say, but you never seem to here it mentioned as an alternative to or upgrade from the CG-5. Generally it seems people move right up from the CG-5 and it's Meade equivalent LXD-75 to the Atlas. Kind of the orphan child, is the Sirius/HEQ-5.
Doug

#4 w orchid

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Posted 20 July 2008 - 12:30 PM

The mount is an upgrade to the CG5.

#5 Doug76

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Posted 20 July 2008 - 12:41 PM

Barely, I would say, and not worth the major increase in price. I figure a lot of people must think so, as like I said, most upgrade to the Atlas from the CG-5 and the like.
Although I do like the idea of quieter slewing motors!
Doug

#6 w orchid

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Posted 20 July 2008 - 01:48 PM

The noise or lack of it justifies the increase in price.

#7 Doug76

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Posted 20 July 2008 - 02:03 PM

Not where I live. No one to bug!

#8 ccs_hello

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Posted 20 July 2008 - 03:44 PM

HEQ5 is an EQ6 shrink down. It has no link to CG5/EQ4/EQ5 design.
EQ6 IMHO has quite a few design advantages over CG5/EQ4/EQ5.
The junior is a scaled version of EQ6 to make it lighter (some like this easier grab-n-go idea) but with less load carrying capability.

I think HEQ5's tripod steel tube diameter might be too small, which does not go together with the name HEQ5. Hopefully factory will correct it.

P.S. price is dependent to product volume.
My statement is based on technical merit, not price/performance consumer-report style scoring.

Clear Skies!

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#9 stevecoe

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Posted 20 July 2008 - 04:20 PM

I am very happy with my Sirius mount, it supports the 6" f/8 refractor quite well, for visual only. When I want to take images, I put on the ED80 that I bought it with. It traks very well indeed. I have taken several 135mm shots with no guiding at all. I walked over and looked through a friend's scope while it was tracking. Then back over to my scope and the guide star was at the edge of the box in the 12mm guiding eyepiece. Great stuff.

One difference between mine and a "stock" setup. I had a Meade Field Tripod that had a machinest friend make an adaptor plate so the head fits that tripod. I am happy with the set up. Yes, it twangs a little when you touch it to focus with a 6mm eyepiece, but it calms down in 5-8 seconds. I can live with that.

Clear skies to us all;
Steve Coe

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#10 xcy

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Posted 20 July 2008 - 10:35 PM

How easily can the non-GOTO version of the HEQ5 be upgraded to GOTO compared to CG-5/EQ5?

#11 Doug76

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Posted 20 July 2008 - 10:43 PM

In these new versions, probably like the Atlas. Just add the Goto hand control.

#12 xcy

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Posted 20 July 2008 - 10:47 PM

If the non-GOTO version of the HEQ5 has the same controller and motors as the EQ6, why it should not make a major upgrade from the CG-5/EQ5?

#13 Doug76

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Posted 20 July 2008 - 10:49 PM

Weight rating difference 5lbs, that's why.

#14 xcy

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Posted 21 July 2008 - 09:57 AM

The price difference between the HEQ5 Syntrek and the EQ5 (with dual motors) is around $300. Is it worth paying this amount to get the HEQ5 instead of the EQ5?

#15 xcy

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Posted 26 July 2008 - 07:21 AM

I am interested in unguided piggyback photography using a long telephoto lens. Is the RA motor drive of the HEQ5 any better than the one for the EQ5?






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