Baader OTP II 19W: Outdoor Telescope Power Switch with elbowed plug

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Baader OTP II 19W: Outdoor Telescope Power Switch with elbowed plug

# 2457615

€ 28.00 Price excl. German VAT tax (19%): € 23.53

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  • Made for outdoor use at cold temperatures
  • Interchangeable EU/US/UK wall plug included
  • Output 12.8V DC/ 1.5 Amp (19 Watt), large power reserve even when cold - usable in temperatures from -25°C up to 40°C
  • 2.5m (8.25') telescope cord incl. reverse polarity protected, elbowed protective-disconnect plug 5.5mm / 2.1mm
  • Not waterproof IP40
  • Successor model of the previous 19W Outdoor Power Supply #2457610 (discontinued).

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Baader OTP II Outdoor Telescope Power 19W

The perfect power supply for smaller telescopes

Baader OTP II Outdoor Telescope Power 19W
The 12.8 volt /1.5 Amp switching power supply with reverse polarity protective-disconnect elbowed plug fits many telescopes, including the smaller and medium size Celestron mounts..

This power supply for outdoor use has been specially designed to meet the needs of amateur astronomers at northern latitudes. This 12.8 V/1.5 A fixed voltage power supply with reverse polarity protected protective-disconnect elbowed plug fits for example to all smaller Celestron mounts (Advanced GT, NexStar SE, NexStar SLT, LCM, CPC) and offers great advantages at a slightly higher price compared to normal indoor plug-in power supplies. It also fits all other common telescope mounts and devices with this power requirement and plug (tip positive/plus inside, plug diameter 5.5mm)

 When used outside in the cold the voltage will reduce with temperature. Already at -10°C the remaining voltage output may have gone down to only 10.5 V. The motors of many telescope mounts will behave erratic at such low voltage. Especially the motor driver electronics then tries to replace the missing voltage by draining ever more Amps until both - power supply and mount electronics - will stall or become damaged. Many users then blame the mount and it´s messy electronics - instead of checking wether an inadaequate power supply may be the culprit.

The Outdoor-Telescope-Power II power supply unit therefore offers 1.5 A/12V DC voltage all accross the AC voltage range from 100 to 240 volt that is common worldwide. Even at extreme cold temperatures, the voltage cannot drop so low that the electronic components or the motors of a telescope mount would suffer damage.

With 1.5 Amp/19 Watt continuous output, there is sufficient power reserve even at full load, even with heavy instrument loads on the mount and large load changes. In addition to the increased outdoor voltage, the working temperature has been designed for -25° to +40° .

Elbowed plug
Elbowed plug

The connecting cord between the power supply unit and the elboews plug measures 2.5 m in length, so that the power supply unit will not become a trip-hazard and can be conveniently placed near the floor. The elbowed plug does protect the power cable from accidental breakage and especially the telescope power input socket from damage when actually someone would trip over the cable. When accidentally the cable gets tightened, the connecting ellbowed plug will release the cable straight, without ripping or damaging the power socket affixed in the telescope.

The housing is encapsulated against moisture. Ideal for the travelling amateur astronomer!

We are absolutely thrilled with this power supply, it has saved us an infinite amount of repair costs due to the elbowed plug.


Additional Information

Manufacturer Baader Planetarium
SKU (#) 2457615
EAN Code 4047825045362
Net weight (kg) 0.22
Type Charger
Adaptable to small Celestron and other mounts
Power Input (V) 100V – 240V
Power Output (V) 12.8V DC
Power Output (A) 1,5 A
Power Output (W) 19 W
Cable length 2,5

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3 Item(s)

Czegley Eugen 192/07/2023 12/07/202311:52
  • Rating:
Wie immer eine schnelle und sauber verpackte Lieferung.
Auf diesem Wege au nochmals ein ausgesprochenes Lob an die fachlich sehr kompetenten und hilfsbereiten Mitarbeiter die sich bei allen Fragen Zeit für die Beratung nahmen. Vielen Dank
  • Macht was es soll, mehr gibt es bei einem Produkt zur Batteriesparung nicht zu sagen
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Hans Goliasch 129/05/2020 09/05/202015:20
  • Rating:
Sehr zufrieden und würde bei Baader gerne wieder kaufen.
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Werner 251/09/2020 08/09/202010:18
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Outdoor Netzteil für kleine Montierung AZ-GTi
Funktioniert super! Das Netzteil liefert genug Leistung auch bei gleichzeitiger Bewegung beider Achsen bei maximaler Geschwindigkeit.
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