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Mounting The PPBADV & Quieter3

Astrophotography Equipment
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#1 bsdkurt

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Posted 31 January 2023 - 09:09 AM

I'm in the process of moving from the ASIAir Plus to using NINA running on the Mele Quieter3. With all the cloudy nights I've been having lately, I made a project out of finding a nice stable way to install the Quieter3 on top of a Pegasus Astro Pocket Powerbox Advance Gen 2 (PPBADV) on my Skywatcher Esprit 100. It wasn't particularly hard but it took a bid of digging to find something to mount it on top of that was compact and would work well.

 

The Quieter3 comes with a VESA mounting plate and two screws to mount it on the bottom of the Quieter3. Pegasus sells a top mounting plate for the PPDADV but it doesn't quite line up with the VESA screw pattern. One well placed drill hole is all that is needed to modify the PPBADV top mounting plate into matching the spacing for the VESA screws.

 

PPBADV Quieter3 #1

 

To find the right spot you can use the provided VESA mounting plate as a hole template for where to drill the hole but first take some time to figure how approximately where the hole should be by putting the top plate on the back of the Quieter3. Once you have an approximate location then use the VESA mounting plate as a template for pencil marking the hole.

 

PPBADV Quieter3 #2

 

After making a pencil mark for the hole position, use a hammer and a nail to dimple the top plate so the drill bit does not walk over the metal before it grabs in. One light tap on the hammer is all that is needed to make a dimple. I used a small bit first and then worked up to the the bit that was just large enough to fit the screw through. Then mount the top plate on the bottom of the Quieter3. The not so hard part is done.

 

PPBADV Quieter3 #3
 
After a bit of searching around for something to mount the PPBADV on my Skywatcher's mounting rings I found the William Optics Dual-Sided Vixen/Arca Swiss 210mm (8.3") Dovetail Plate. This is perfect for my needs as I didn't want the large A-Plate that Pegasus sells. The William Optics dovetail plate is nice because it is compact and has slots on both sides of the plate so screws and washers are tidy. I also found the three vertical unthreaded slots to be ideal for mounting on the scopes rings as well as the PPBADV's dovetail brackets. Given this flexibility I would expect it would work on any number of scopes especially since they have longer versions as well. 
 
I decided to mount the dovetail plate as far back as I could but without blocking the Skywatcher boat ring from unscrewing.
 
PPBADV Quieter3 #4
PPBADV Quieter3 #5

 

Next mount the PPBADV on the dovetail bar using the PPAADV dovetail brackets. I wanted to install this further back but the screws provided for the dovetail brackets were about 1 mm too long so I needed to go just above the Skywatcher's mounting ring.

 

PPBADV Quieter3 #6
 
Next mount the Quieter3 on top. Note the nice air gap on the bottom of the Quieter3. I should also note that the Quieter3 is designed to radiate its heat from the top of the unit. You don't want to install anything on top of the Quieter3 except maybe a heatsink. You can also see there's enough room under the front of the dovetail bar to fit the dew heating strap. 
 
PPBADV Quieter3 #7
PPBADV Quieter3 #8

 

Here's a shot of the final installation with all connections made. Note that I used the PPBADV's Adj Out, set to 12v, to power the Quieter3. This is useful as it allows you to shut off everything powered by the 4 12v fixed outlets on the other side in the advanced sequencer prior to using the Shutdown PC plugin to turn off the Quieter3. This is particularly nice if you are running off a battery and want to conserve charge after the imaging session is complete.

 

PPBADV Quieter3 #9
 
Here's final shot of the whole scope from the other side. 
 
PPBADV Quieter3 #10

 

I run the scope with a single power supply line to the PPBADV that I connect to a battery or to the 10A Pegasus power supply.  The mount power and USB connection run back down the same cable sleeve the power line is in so there's one bundle of three cables in the sleeve that goes up to the PPBADV. I made this extra long so there's plenty of slack for movement. Thus far I have not had any cable snags but I also haven't had a lot of imaging time yet.

 

Hopefully someone finds this info useful for their installation.

 

Clear Skies


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#2 starrycanuck

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Posted 31 January 2023 - 10:17 AM

Did exactly the same for my 3C and PPBADV.

 

One outstanding issue for me is powering the 3C. I notice you are powering from the Adjustable Output port (presumably set to 12V) ... which cables did you use to work with the MeLe's PD port? Have some cables enroute from AliExpress that I hope will work but looking for a Plan B.


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#3 bsdkurt

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Posted 31 January 2023 - 10:46 AM

Did exactly the same for my 3C and PPBADV.

 

One outstanding issue for me is powering the 3C. I notice you are powering from the Adjustable Output port (presumably set to 12V) ... which cables did you use to work with the MeLe's PD port? Have some cables enroute from AliExpress that I hope will work but looking for a Plan B.

I'm currently using the following combo from Amazon:

SinLoon USB 3.1Type-C Male to DC5.5 X 2.5mm Male Female Power Plug Extension Charge Cable for Tablet

SinLoon 5PCS 90 Degree Angle 5.5x2.1mm Male Jack to 5.5x2.5mm Female Plug Adapter

 

It's a bit bulky so I've been considering pairing this with a short 2.1mm male male cable to tidy things up a bit further:

AAOTOKK Type C Power Adapter Type C USB Male to DC 5.5x2.1mm Female Connector

 

Yes, I landed on using the Adj Output set to 12v so that I can independently shut off the 4 fixed 12v ports on the other side of the PPBADV. This can be done in NINA's advanced sequencer (which I'm just learning) at the end of a session followed by the Shutdown PC plugin to turn off the Quieter. 

 

Edit: Also here are links for the short USB 3 cable I used for connecting the Quieter3 to the PPBADV and the cable sleeving I used to tidy up the cables throughout:

 

USB 3.2 Gen 1 Type-A to Type-B SuperSpeed Cable - 1ft

Alex Tech 10ft - 3/8 inch Cord Protector Wire Loom Tubing Cable Sleeve


Edited by bsdkurt, 31 January 2023 - 11:09 AM.

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#4 bsdkurt

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Posted 31 January 2023 - 01:28 PM

which cables did you use to work with the MeLe's PD port?

I missed that you asked about powering the 3C via the PD port. Those links I provided are for powering it via the 12v USB C non-PD port. I want the PD USB C port available for connecting a USB C NVMe SSD.




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