Astrofriend's homepage


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My Astronomy Tutorials

An attempt from me to create align and Drizzle functions to AstroImageJ, long time project!

AstroImageJ Align and Drizzle
Comet Catalina C/2013 US10

Do you know about this interesting software? Tutorial and my own macros to batch load Canon CR2 raw files.

AstroImageJ astrophoto edit
Comet Catalina C/2013 US10

Short tutorial about how to take photographs of meteor showers.

Comet photography planning
Perseid Meteor Showers 2015

How I plan when there is a comet going on.

Comet photography planning
Comet Catalina C/2013 US10

Where to find these exciting comets?

How To Find Comets
Comet Catalina C/2013 US10

Photon collecting efficiency

Transmission and Time efficiency
Transmission optical system

Dithering as a replacement for dark calibration


Off axis auto guiding on comets, is it possibly? Yes!

Off axis auto guiding on comets
Comet off axis autoguiding

ISO DSLR, what's going on inside the camera?

3d flat image

How a boring time consuming drift align process will be very easy.

Drift align with PHD2
3d flat image

An illustration why there are so important to do dark and flat calibration.

Dark and Flat calibration
3d flat image

Dark calibration is important, especially the temperature should match between light and dark images. This is a tips for DSLR cameras with temperature sensors, i.e Canon.

Dark Calibration
3d flat image

How to use a LCD-monitor to make flat-images for calibration

Flat Calibration
3d flat image

Fitswork, a free very competitive image processing tool

Fitswork tutorial

Tutorial how to do a time lapse astronomy video

Time lapse tutorial