The power supply recommended for AC powered installations where the observatory is located close to the AC power supply is the Meanwell GST120A12.
For observatories with heaters and long DC power cable runs the Meanwell HRP-300-12 is recommended as it’s remote sense functionality allows it to compensate for any voltage drop in the long cable runs. (If no heaters are present, the Meanwell HRP-150-12 is the preferred option.)
Direct links to order Meanwell HRP-300-12 from USA:
HRP-300-12, Mouser Electronics
Accessories for Meanwell HRP-300-12:
TRC-E-HRP300450600 enclosure for HRP-300-12
US/Canada power cord for HRP-300-12
Outdoor Cable
The recommended off the shelf for use on roofs or outdoor structures is the sunlight and abrasion resistant AlphaWire EcoFlex PUR 80045 SL005 (unshielded) or 80145 SL005 (braid shield). Digi-Key usually has one or the other in stock: 80045 SL005, 80145 SL005.
That cabling doesn’t have a twisted pair, so we recommend wiring up the conductors to the green numbering in the two images below.
Mathias Research Ranch Installation in Alberta, Canada
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Long DC Cable Run Connector Care Package
If you need to build your own long cable with (using the cable listed above) you can request a Long DC Cable Run Connector Care Package from us. It should contain: 
Item # | Part | Quantity | Manufacturer | Manufacturer Part Number | Example Supplier Link 1 | Example Supplier Link 2 |
|---|---|---|---|---|---|---|
1 | MIL-DTL-5015 compatible plug, 14S-2S insert | 1 | various (Amphenol Industrial) | various (MS4106F-14S-2S-624) | https://au.rs-online.com/web/p/mil-spec-circular-connectors/2982465/ | |
2 | PG13.5 cable gland adaptor for size 14 MIL-DTL-5015 compatible plug | 1 | Amphenol Industrial | 97B-14S-PG13.5-624 | DFN Camera Help | Amphenol Industrial (minimum order quantity will apply) |
3 | PG13.5 cable gland | 1 | various | various | https://www.altronics.com.au/p/h4318A-6-12mm-eg13.5-pg13.5-black-ip68-cable-gland/ | |
4 | ≈10mm length of 3 mm yellow heatshrink tubing | 2 | various | various | https://www.altronics.com.au/p/w0912a-black-3mm-heatshrink-1.2m-length/ | |
5 | ≈10mm length of 3 mm black heatshrink tubing | 2 | various | various | https://www.altronics.com.au/p/w0912a-black-3mm-heatshrink-1.2m-length/ | |
6 | ≈10mm length of 5 mm heatshrink tubing (may be required if 3 mm tubing doesn't fit over contacts "C" and "B") | 0-2 | various | various | https://www.altronics.com.au/p/w0913a-black-5mm-heatshrink-1.2m-length/ | |
7 | Power supply connector | 1 | Hirose | DF11-2DS-2C | https://www.digikey.com.au/product-detail/en/hirose-electric-co-ltd/DF11-8DS-2C/H2022-ND/141255 | |
8 | ≈10mm length of 3 mm heatshrink tubing | 2 | various | various | https://www.altronics.com.au/p/w0912a-black-3mm-heatshrink-1.2m-length/ | |
9 | ≈10mm length of 1.5 mm heatshrink tubing | 2 | various | various | https://www.altronics.com.au/p/w0910a-black-1.5mm-heatshrink-1.2m-length/ | |
10 | DF-11 pre crimped jumper cable, red, cut in half | 1 | Hirose | H3BBT-10106-R6 | ||
11 | DF-11 pre crimped jumper cable, black, cut in half | 1 | Hirose | H3BBT-10106-B6 | ||
12 | Blue 4 mm fork crimp terminal | 7 | various | various | https://www.altronics.com.au/p/h2082a-blue-4mm-fork-crimp-pk-100/ |
Long DC Cable Assembly
Your connector should now look like this:
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add df 11 stuff
