John Duchek's Page -Welcome

I am constantly updating, so watch for changes.....

Screenshot of eyepiece selection software
Eyepiece selection software calculates the % light lost for your pupil size and various telescope/eyepiece combinations.  This software is available on this site with versions for Windows, Linux, and Mac for free.  Also available is a pdf explaining how you can turn your 8" telescope into a 3" telescope with the wrong combination. 
 Links to weatherstations:
Carrizozo/Nogal, NM Weatherstation (Weather Underground)
Carrizozo/Nogal, NM Weatherstation (NOAA)
Carrizozo/Nogal, NM Allsky Cam

Concord/Sunset Hills, MO Weatherstation (Weather Underground)

Links to Linux OS Astronomy Versions:
Astronomy Linux - An amazing amount of linux astronomy
software, bootable from CD, or HD installable

Distro Astro - Linux Astronomy Software with some
 preinstalled windows software thru 'wine'

John's Pictures (on Flickr)-main page:
The Lunar 100 (all but 2, so the Lunar 98)
Hi Resolution wallpaper (1900x1200 approx)
2014 Timelapse, 2015 Timelapse, 2016 Timelapse, 2017 Timelapse
2017-Moon
2013-Moon

Projects:
GPS video inserter project
3D Printed Newtonian OTAs
Cloud Detector (Transparency Measurement)
Technique for taking daylight moon photos
Lunar Meteor Detection


 


 Old talk LO Impress file downloads -
Files available:
3D Printer Filaments - 2018-10
Aging Pupils - 2011
Getting Started in Astronomy (2 nights)
Basics of Observing and Photographing the Moon
Lens Experiments
Moonlight Madness (light pollution)
Lunar Challenges (LC)
Shooting with a Canon