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Celestron HD wedge help plz

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15 replies to this topic

#1 tommyboy

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Posted 11 June 2021 - 10:46 AM

I just received the Wedge and am trying to do the final assembly.

 

I'm having a problem in trying to retract the latitude adjustment screw far enough to clear the orange colored rod between the two side plates. The swivel block won't clear the base so I can't retract it all the way.

 

I don't see a way to remove the swivel block. I might remove that orange support rod but wanted to check here first.

 

Help?

 

thanks, tom

 

PS: Another question...as the latitude is adjusted on the sideplates, what purpose does the screw jack serve? There seems to be very limited travel on that rod.


Edited by tommyboy, 11 June 2021 - 12:41 PM.


#2 GalaxyPiper

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Posted 11 June 2021 - 12:21 PM

Take it apart. Reposition. And a picture would help.

If it is this one, this is how it should look.

 

71BFFxXvMjL._AC_SL1500_.jpg


Edited by GalaxyPiper, 11 June 2021 - 12:23 PM.


#3 Visit-the-Moon

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Posted 11 June 2021 - 12:37 PM

What is your latitude? The wedge can be adjusted. Take a look at the manual, it is on the web if you misplaced the hardcopy.. There are three positions for the swivel block (the top fitting) and the latitude pivot bar has two possible positions. You need to partly dismantle the unit. Both L-brackets have to be loosened right off to reposition the swivel block. You can't make these adjustments if the telescope is attached! I'm at 37.5° S and had to make adjustments. Works well when set up. 



#4 tommyboy

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Posted 11 June 2021 - 02:34 PM

Got it thanks! I'm at 41 N. I  am a bit puzzled as to how the rod is adjusted there isn't much travel on it.



#5 bips3453

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Posted 11 June 2021 - 02:58 PM

Could you have a different version? https://www.celestro...-and-se-6-and-8



#6 tommyboy

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Posted 11 June 2021 - 05:25 PM

I have model number 93664

 

https://www.celestro...ts/hd-pro-wedge


Edited by tommyboy, 11 June 2021 - 05:26 PM.


#7 bips3453

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Posted 11 June 2021 - 05:42 PM

Got it! A picture of your wedge would be helpful to understand it better. 



#8 tommyboy

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Posted 11 June 2021 - 06:37 PM

hows this?



#9 tommyboy

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Posted 11 June 2021 - 06:38 PM

IMG_3408.jpg



#10 tommyboy

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Posted 11 June 2021 - 06:49 PM

3410.jpg



#11 bips3453

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Posted 11 June 2021 - 06:55 PM

Rotating the knob below should adjust the height of the platform to match your latitude. Does it not move the platform?

 

(the black colored star knob) 


Edited by bips3453, 11 June 2021 - 06:57 PM.


#12 tommyboy

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Posted 11 June 2021 - 07:05 PM

Yes it does , but as I said there's very little travel. I'm guessing it's a "fine tuner"?

 

edit BTW the manual sux


Edited by tommyboy, 11 June 2021 - 07:05 PM.


#13 bips3453

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Posted 11 June 2021 - 07:13 PM

My appologies, I don't understand the little travel part. I will let experts chime in... 

 

Good luck!


Edited by bips3453, 11 June 2021 - 07:14 PM.


#14 tommyboy

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Posted 11 June 2021 - 07:41 PM

Thanks my friend!



#15 GalaxyPiper

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Posted 11 June 2021 - 08:09 PM

Yeah, we are a little confused. Most of us are talking about the long threaded screw that moves the whole plate up and down.

What "little" travel are you talking about?

 

Signed Confused confused1.gif scratchhead2.gif

 

Those knurled nuts that you showed us are just to provide an easy way to join the long threaded screw to the pivot. They are not fine adjustment nuts on the screw. They are just to keep the long screw from falling out and have something to push against.

 

It's just to provide easy assembly and tear down for travel, without the need for tools. Don't over think it.

Once you have the plate adjusted for your latitude, you tighten everything down and never adjust it again, until you travel to another latitude location.

 

There should be a set screw or grub screw that holds it to the longer threaded screw so it stays in one position as the Jack screw turns. If it stays in one place (on the jack screw and does not turn along with tee jack screw) and starts to back off, you don't have the set screw tight enough on the longer jack screw.

 

I think this is where your problem lies. look closer at the knurled thumb nuts around the outside.

In your picture I think I see a slotted set screw. Tighten that down.

 

The reason for the jack screw is to adjust your mount with the full weight of the telescope and gear on it if you have to make fine adjustment in the field when lining up the north polar position.

It's a convenience device.


Edited by GalaxyPiper, Yesterday, 10:44 AM.


#16 speedster

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Posted Yesterday, 01:15 AM

Make sure your altitude adjustment bar and your orange bar are in the holes shown in the first pic and that takes care of clearance issues there.  When you say "limited travel" I assume you are talking about clearance at the swivel block at the top of the altitude threaded rod.  This is normal as the wedge comes with the latitude plates set for 0-50 degree use and you are at 41 degrees so there won't be much travel left and no more is needed.  For higher latitudes, you change the orientation of the latitude plates but you shouldn't need to do that.  The jack screw is what does the adjusting.  The bolts on the sides of the latitude plates just lock it down after you've set the altitude via the jack screw.  You can also remove a bracket and move the swivel block to the middle position and get more clearance but I don't think you'll need to.  The 2 latitude scales are different so use the one for 0-50 degree set up to do your rough setup.


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