Category: Print 3D

Homemade power banks

11 October 2024

Mobile power bank charged with Sun, power supply via USB port for any devices

Peruns crosing borders and going abroad to their new owners – Singapore.I never thought that Perun could bring interest among foreign colleagues astrophotographers. I’m really happy. It is worth being 100% committed and persistent in pursuing goal. It is worth having a plan and implementing it consistently to celebrate such

External power supply – Laser Collimator MK III

14 January 2022

The laser collimator is a very useful tool especially for amateur astronomers. My model ( Baader Laser Collimator Mark III ) works very well, but has one disadvantage, like any other type of this type. The weakest link in the whole construction is the SR battery model. Usually, the

PERUN II - mobile power bank for Astrophotography

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