About me


I’m just a guy  who happens to have two complementary hobbies: photography and astronomy.

I use a Canon EOS 600D, a 650D and a modded Canon 350D with an assortment of lenses, telescopes and mounts.

  • Canon EFS 60mm f/2.8 Macro USM
  • Canon EFS 18-135mm
  • Tokina 11-16mm f/2.8 for landscapes and starfields
  • Sigma 120-400mm 4.5-5.6 APO HSM (Not the sharpest lens around but definately not the the most expensive.. )
  • Canon EF 50mm f/1.8
  • Canon EFS 18-55mm f/3.5-5.6 IS
  • Canon EFS 55-250mm f/4-5.6

An impressive list of non-impressive camera lenses, except for the 60mm macro and Tokina. Also, the 55-250mm zoom lens has a surprising sharpness to it at 250mm. See here.

My astronomy gear includes a reasonably old Meade 8″ SCT (Scmitt Casegrain) telescope with a f/6.2 focal reducer / field flattener and a variety of gadgets, webcams, home built CCD camera, etc.  I also have an Orion EON ED 80mm refractor with a field flattener.

I use an iOptron SkyTracker for long exposures on a tripod. One of my current projects include an autoguiding star tracker with stepper motor and Arduino processor.

I have started using Astrobin to host my images at full resolution. Look at http://www.astrobin.com/users/TheoP/. This site is not free anymore and I am not publishing new photos there.

Future plans:

  • I am getting a small metal lathe and want to make more worm wheels. Maybe I could sell a few of them to help me buy a new mount.
  • I have modified my Canon 600D camera to replace the infrared filter with a clear glass filter. The focusing distance of the converted camera have changed a small amount and my Tokina lens does not reach infinity anymore. I will have to re-adjust the CCD in the 600D to get the focusing distance within reach of my lenses again.
  • I want to sell my modified 350D. Anybody interested?
  • Build a camera box with peltier cooling for the modified 600D to reduce noise on long exposure astrophotography shots.
  • Get a full frame Canon camera body (Canon 6D ?) and a set of L lenses.
  • Get a decent tracking mount (EQ6 ?), remove the 8″ optical tube assembly from the Meade SC fork mount and put it on the new mount
  • O yes, and win the lottery to finance all of this.

One thought on “About me

  1. Bryan

    Just a word of caution on your second plan. With the full frame body you will lose more than half of your resolution of celestial bodies. The Canon 70D might be a better fit for astrophotography, or a used 7D maybe? I have both the 7D and 5D Mark III and I seldom bother mounting it to my scope. I’ll defer to you experience though. Great blog! I recently finally took the plunge into astrophotgraphy myself. I love it. Thanks for sharing!


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