Welcome to John's web pages

 

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BAA VSS database

shortcut to VSS software

Lymm Observatory

railway signalling



shortcuts

lightcurves

optimal photometry

signal box diagrams



    Welcome to my web pages! I hope you find something of interest here concerning one of my hobbies.


    IC434 (Horsehead Nebula), 21 Dec 2009, stack of 100 x 30s exposures, 30 cm SCT at f/6.3 and MX916 camera.

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