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Unboxing New Explore Scientific 10" Truss Dobsonian Reflector

dob reflector
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#1 Dana in Philly

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Posted 20 October 2018 - 01:11 PM

The FedEx driver just carried a 68 lb. box to my door. It's big: 20" x 19" x 37".

 

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Let's see what's inside!

 

First, a quick note that there is quality control at the factory, and there's a sticker on the exterior shipping box noting that this unit passed:

 

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Open the outer shipping box, and we find an interior box. Good. Double protection.
 
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Opening that, we find more cushioning, the trusses, and the front collimation tool.
 
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#2 Dana in Philly

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Posted 20 October 2018 - 01:16 PM

Once we set those aside, we see that there are two further boxes inside the interior shipping box, with foam cushioning above and below. To the right side, one of the yellow trunnions:

 

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Inside the smaller of those two boxes, we find the mirror box. Note that the handle folds down.
 
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Open the mirror box and we find yet more foam packing, housing various bobs and bits like the truss knobs and the battery box:
 
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(Apologies for the portrait orientation. Dunno why the phone camera switched orientation. I blame my son.)
 
 
Gently remove that, and there's the mirror. Thanks for center spotting it, ES.
 
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Edited by Dana in Philly, 20 October 2018 - 01:17 PM.

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#3 Dana in Philly

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Posted 20 October 2018 - 01:20 PM

There was another box, the larger of the two:

 

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What's in that one?
 
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The upper truss assembly, and the rocker box. Let's start with the UTA:
 
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Looks good, everything secure, no damage. Let's unwrap it:
 
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#4 Dana in Philly

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Posted 20 October 2018 - 01:22 PM

Last but not least, the rocker box:

 

20181020 134103

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#5 Dana in Philly

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Posted 20 October 2018 - 01:25 PM

Everything arrived unscratched and undamaged. Good job, Explore Scientific!

 

I'll gently vacuum the metal boxes just to get any stray metal bits that might be lurking. I didn't see any, but it's worth taking the time to be sure.

 

Now to put it together....

 

But for that, I suppose I gotta crack open the manual.


Edited by Dana in Philly, 20 October 2018 - 01:26 PM.


#6 Dana in Philly

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Posted 20 October 2018 - 02:58 PM

The manual says the first step is to attach the trunnions to the mirror box.

 

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There are various holes and bolts, but certain bolts only go in certain holes, so it all works out. There are different sets of holes, for different weights in the UTA. I mounted the trunnions in the lower set of holes because I'm working with 1.25" EPs for now.


Edited by Dana in Philly, 20 October 2018 - 03:12 PM.

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#7 Dana in Philly

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Posted 20 October 2018 - 03:03 PM

Then, set the mirror box into the rocker box. There's about half an inch of side-to-side play so that the mirror box doesn't scrape up the inside of the rocker box. Might be good to put a little padding in the rocker box, though, just to be safe.

 

Next come the rubber baby buggy bumpers, or hockey pucks, called the "clutches" by ES.

 

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Then we've gotta attach the trusses at the corners of the mirror box, being super careful not to spin out the bolts and drop 'em on the pretty mirror. I've gotta rig up a mirror cover. That thing is just asking for it.

 

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Once they're all bolted up, it looks like this, kinda headless:
 
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Edited by Dana in Philly, 20 October 2018 - 03:51 PM.

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#8 Jond105

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Posted 20 October 2018 - 03:03 PM

I like the handle. Can't wait to see this finished up

#9 Dana in Philly

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Posted 20 October 2018 - 03:05 PM

And, holding firmly onto the UTA, we bolt it up to the upper trusses:

 

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Presto, we have a Dalek!
 
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#10 Dana in Philly

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Posted 20 October 2018 - 03:06 PM

It wasn't too difficult to assemble. I did it very s-l-o-w-l-y the first time.


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#11 Dana in Philly

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Posted 20 October 2018 - 03:10 PM

I think if I unbolt this finder mount, I can fit a Telrad on this here plate:

 

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I don't have any use for the supplied red dot finder. BTDT.

Edited by Dana in Philly, 20 October 2018 - 03:15 PM.

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#12 buckingham_hoo

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Posted 20 October 2018 - 03:21 PM

Congrats on the new scope! I'm seriously considering the 16" version. 



#13 coopman

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Posted 20 October 2018 - 03:22 PM

Thanks for posting and congrats on the new scope.  Hope that you get first light soon, although the moon is up there to limit your joy of any DSOs.



#14 Dana in Philly

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Posted 20 October 2018 - 03:48 PM

So, all in all, looks like a pretty nice piece of kit.

 

If I had one suggestion for Explore Scientific, it'd be to think about ways to get the factory workers to vacuum out the little metal bits here and there when they drill the assemblies. I'm not sure how easy that is, since we're dealing with square stock that they're drilling into, and tapping threads into.

 

I could hear some bits shaking around in the rocker box when I picked it up to move it, so I turned it upside down and shook it this way and that.

 

For now, those of us who buy these scope should examine everything carefully and shake and vacuum any loose bits out. Metal bits and mirrors don't mix.


Edited by Dana in Philly, 20 October 2018 - 03:56 PM.

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#15 Starman1

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Posted 20 October 2018 - 05:00 PM

 

And, holding firmly onto the UTA, we bolt it up to the upper trusses:

 

 
 
 
Presto, we have a Dalek!
 
 

 

 

Do you prefer the focuser on the east side (scope pointed south)?

I've used both sides, and far prefer the west side (scope pointed south).

My friend set his 16" up with the focuser on the West side also.  That way you control all movement with the right hand, and use the eyepiece with the right eye (body away from the opening).

Accessories you could use:

Shroud

Counterweight (if you get heavier 2" eyepieces)

Mirror cover--cut a piece of cardboard large enough to rest on the mirror clips.  Works fine.


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#16 Dana in Philly

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Posted 20 October 2018 - 05:09 PM

Do you prefer the focuser on the east side (scope pointed south)?

I've used both sides, and far prefer the west side (scope pointed south).

My friend set his 16" up with the focuser on the West side also.  That way you control all movement with the right hand, and use the eyepiece with the right eye (body away from the opening).

Accessories you could use:

Shroud

Counterweight (if you get heavier 2" eyepieces)

Mirror cover--cut a piece of cardboard large enough to rest on the mirror clips.  Works fine.

I'm left eye dominant (I know from the handgun range), so I'm OK with east side for the moment. I can always switch it.

 

And yes, things on the to-get list:

 

- Shroud (don't hate me, but I'm thinking a contractor sized garbage bag, slit open to become a sheet, and a little tape, would work in the meantime)

- Some way to protect that mirror. I like your cardboard resting on the mirror clips idea.

- Maybe a nice wide field 25mm eyepiece

- Enclosing the UTA somehow.


Edited by Dana in Philly, 20 October 2018 - 05:20 PM.


#17 Dana in Philly

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Posted 20 October 2018 - 05:27 PM

Congrats on the new scope! I'm seriously considering the 16" version. 

I think the biggest risk factor might be whether it gets mauled in the shipping, and then, be sure to deal with the metal shavings, because it seems like the factory hasn't entirely solved this problem yet. We're dealing with optics. You wouldn't expect metal shavings in an SLR camera. You shouldn't have it in a telescope.


Edited by Dana in Philly, 21 October 2018 - 06:58 AM.


#18 Cometeer

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Posted 20 October 2018 - 06:04 PM

The focuser can be rotated such that the focusing knobs are on the bottom. You can also rotate the UTA 45* so viewing near the horizon doesn’t require you to sit on your bottom.

#19 buckingham_hoo

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Posted 20 October 2018 - 06:15 PM

I think the biggest risk factor might be whether it gets mauled in the shipping, and then, be sure to deal with the metal shavings, because it seems like the factory hasn't solved this problem yet. We're dealing with optics. You wouldn't expect metal shavings in an SLR camera. You shouldn't have it in a telescope.

The shavings are a little disappointing. I thought that was one of the issues that was supposed to be corrected with the gen II. 



#20 Dana in Philly

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Posted 20 October 2018 - 07:28 PM

You know, there weren't any loose visible shavings in the open spaces at the bottoms of the boxes. I think that's been cleared up. But I could hear little bits rattling around inside the square section pieces. Shavings from drilling and tapping. That's still an unsolved problem on the manufacturing side -- perhaps insoluble at this price point. (I was thinking last night that perhaps they should just quickly inject some expanding foam into the square section pieces they tap or drill, so as to trap any shavings in situ.)

 

For now, if you pop for one -- it is a handsome thing, at a very reasonable price -- it's just something to deal with when you get it.


Edited by Dana in Philly, 21 October 2018 - 07:06 AM.


#21 Dana in Philly

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Posted 20 October 2018 - 07:30 PM

The focuser can be rotated such that the focusing knobs are on the bottom. You can also rotate the UTA 45* so viewing near the horizon doesn’t require you to sit on your bottom.

That sounds like a good idea.



#22 GeneT

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Posted 20 October 2018 - 08:26 PM

Nice post! Did you buy a shroud?



#23 Dana in Philly

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Posted 21 October 2018 - 06:37 AM

Nice post! Did you buy a shroud?

Not yet. Gotta explore the options. May go here:

 

http://www.scopeshrouds.com

 

The ES shroud looked kinda floppy in the photos I saw in one review. It's designed to fit either the 10" or the 12", so I could see how that'd be the case. But I want snug, not floppy.


Edited by Dana in Philly, 21 October 2018 - 07:03 AM.

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#24 DHEB

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Posted 21 October 2018 - 07:44 AM

Two years ago I went through a nightmare with a similar scope (but 12") when, to my horror, I found thousands of metal shards of all sizes everywhere, some of them nearly a couple of cm long (little under an inch). Both mirrors were deeply scratched at several spots. Needless to say, the scope went back to the seller and I got the money back. No blame, just a big deception. The whole story can be found here.

 

I am glad for you that your ES dobson came home in good shape. I hope you have a good time with it under the stars waytogo.gif



#25 rubberfish

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Posted 21 October 2018 - 07:58 AM

Dana. I'm not familiar with the make and model scope you've chosen but it looks

like it'll do the job alright. And Starman1. Liking the cardboard suggestion.


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