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  1. skylite

    reasonable green pointer for astro purposes

    Hi all, I've spent a lot of time reading posts in this forum (and elsewhere) and still having trouble deciding on what to buy. I want a 532nm pointer for use as an astronomy demonstrator, both in the city and at dark sky sites. I want reasonably good power, and don't want to buy cheap...
  2. skylite

    profile pic

    Hi, I'm new to this forum and would like to know how to upload a profile pic. TIA :)
  3. skylite

    wiring a 30mW module with TTL

    Hi, I'm *not* very savvy wrt electronics, so please keep your responses simple!!!! I'm an astronomy demonstrator and have got a 30mW green laser module which I want to use to make a pointer. It has 3 wires coming from the board: a red, a black and a yellow. I guess the red and black are +ve and...