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Last update:

December 12, 2018

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I spend this website many hours each week to share my knowledge and experience from the areas of Astronomy, Cars and Travels. Most pages are written in English that is not my own native language, so do not judge me too hard if you find grammatical errors and more.

Welcome to my home!


(these pages could be a mix of Swedish and English)



Here I have collected news I found interesting.

Technology, Astronomy, Cars, Travels etc.

December 6, 2018

Astronomy: Many short vs Few long exposures

November 22, 2018

Lisbon mini vacation

November 20, 2018

Chrysler Crossfire, replacing the heater blower

November 17, 2018

Star Adventurer and angled viewfinder

November 16, 2018

Lisbon Astronomical Observatory

November 9, 2018

I collect them in a gallery for comparison later.

Macro photography: Rose hip

November 3, 2018

October 27, 2018

Sigma vs Pentax, vignetting

October 21, 2018

  • One day at Mantorp Park race track:

    When I was young about 55 years ago I followed my dad to Skarpnäcks race track, an earlier air field. I have not visit any more race track since then, just a couple of drag race. I felt it was time do do it once again. And more, two of our friends, Jürg and Niklas are drivers today.

    vehicles/ mantorp-race-track-2018/ mantorp-park-race-track-2018.html
    (Mantorp Park race track, 2018)
Mantorp race track, 2018

October 19, 2018

Moon light on the sky

19 oktober, 2018 Sweden

October 8, 2018

  • Tutorial: Remote control of Canon camera from a smart phone.

How many times have you tried to see the camera display when the camera pointing upwards to the stars? In my attempts to make my transportable astronomy equipment more user friendly I'm doing this. Make my Canon camera remote controlled from a smart phone:

Tutorial: How to make a Canon camera remote controlled

It's not difficult to use this remote function and you can use this to much more than just astrophotography.

Remote control of Canon camera from smart phone
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New links:

Here I have collected new links that I found interesting.

Technology, Astronomy, Cars, Travels etc.

28 October, 2018

Many years ago I read about CMOS sensors that in future could have non destructable read out. With that technique you can read out one pixel many times and with reduced readout noise. Alternative read out one low gain and one high gain and then combine these two readouts as a high dynamic data read out.

One problem, expensive! I hope that normally DSLR cameras use this technique in future.

You find above links later on the link page:

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Must do stuff:

Technology, Astronomy, Cars, Travels etc.

(look carefully that it has not been canceled or has a changed date)

December, 2018

It could be as bright as magnitude +4 but still difficult to see by naked eye because of it's diffuse core. If I'm lucky to get a clear sky I will try to catch it with my 150 mm lens on full frame DSLR camera. Lots of one minute exposures at high ISO setting.

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Föredrag: (Stockholm, Sverige) Sweden

This is only for you who live in Stockholm, Sweden or want to travel and make a visit here.

De flesta av de här föredragen hålls i Stockholm. Vanligtvis är de på svenska men ibland på engelska. Läs noga på deras hemsida så att det inte blivit inställt eller flyttat.

Området är naturvetenskap.


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