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February 18, 2019

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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!

Twitter:

@AstrofriendLars at Twitter

Totally new for me, maybe I will just use Twitter to advertise news on Astrofriend's website. Lets see how it develops. Old man learning new things.

Twitter @AstrofriendLars

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Highlights!

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

Contents:


News:

Here I have collected news I found interesting.

Technology, Astronomy, Cars, Travels etc.

February 17, 2019

Twitter @AstrofriendLars

Follow Astrofriend

If I find something interesting I put it on Twitter.

February 17, 2019

Messier 51, Whirlpool galaxy

February 16, 2019

Double Star WDS STT 307

8 februari, 2019 Sweden

Min fars äventyr som sjöman under åren 1937 till 1945:

  • Har lagt till fartygen S/S Torsa, S/S Hermod och S/S Rota. Nu finns också länkar till rederierna inlagda.

  • Har lagt till fartygen M/S Baltia och S/S Bele samt flera kompletteringar på de tidigare fartygen efter tips från andra sjöfarare.

  • Ångisbrytaren Göta Lejon tillagd med bilder från systerfartyget Sankt Erik.

  • Militära grundutbildningen på börjad samt kompletteringar på diverse tidigare sidor.

  • Många uppdateringar, de första 8 händelserna finns med.

  • Vem har inte drömt om att göra en jorden runt resa någon gång i sitt liv. Min pappa Evert gjorde det redan innan han var 20 år fyllda. Han mönstrade på handelsfartyg och hamnade ända borta i Kina och andra länder i Asien. Det här skedde delvis under Andra Världskriget, det var många fartyg som gick under från minor och torpeder, även svenska fartyg. Tre av fartygen han var på förliste pga detta, dock något efter att han mönstrat av. Trevligt nog har jag en hel del bilder till pappas alla berättelser om de här 7 åren till sjöss. Jag har nu mer än hälften klart till denna spännande historia som ni kan följa här:

    travel/world/evert-at-sea-1937-1945/ 01-evert-at-sea-start-sv.html
    (My father's adventures at sea, 1937 - 1945)

    Idag är det skrivet på svenska, men planen är om tiden räcker till att även ha den översatt till engelska.

My father's adventures at sea, 1937 - 1945

February 5, 2019

  • Astronomy, have you ever thought about if you have the correct debayer pattern for your color camera? I thought maybe I have missed something when I created the macro where I retrieve the color information from a debayered color image. I have created a simple test pattern and did some test.

  • Tutorial: From raw to demosaic to rggb to combine rgb:

    astronomy/ tutorials/ tutorial-raw-demosaic-combine/ tutorial-raw-demosaic-combine.html
    (Bayer pattern test)
RGB Test pattern for debayer

February 5, 2019

Globular cluster M92

February 4, 2019

  • One more night with no clouds. I setup my telescope for photographing the galaxy Messier 63. You really need a dark sky for this which I don't have. But interesting to do a test to see what I get.

  • Sunflower Galaxy M63:

    astronomy/ astronomy-photo/ galaxies/ m63/ m63-galaxy.html
    (Sunflower Galaxy M63)
Sunflower Galaxy M63

February 4, 2019

  • Do you find impact craters from meteorites interesting? I have updated my page with a better map of Swedish impacts to make it easier for you to find them.

  • Impact craters:

    astronomy/ meteorite-craters/ impacts.html
    (Astronomy, Impact craters)
Impact crater Dellensjöarna

February 1, 2019

Bit resolution calculator

27 januari, 2019 Sweden

Nya kartor över fornlämningar:

  • Nu har jag lärt mig att göra mycket bättre kartor, det är för dig som gillar att vara ute i naturen och leta efter vår spännande historia.

  • Här finner du de nya kartorna:

    history/ sverige-fornlamningar-kartor/ fornlamningar-kartor-sv.html
    (Fornlämningskartor, Sverige)

    De här nya kartorna ersätter de tidigare som man var tvungen att ladda ned som kml filer.

Gånggrift Hallarör i Västergötland

January 22, 2019

123P/West-Hartley, January 18, 2019

January 21, 2019

Blood Moon 2019

11 januari, 2019 Sweden

January 8, 2019

  • When I have done investigating about my father's boat Monalisa I have come in contact with Helmut. He has bought a C. G. Pettersson boat with the name Sindbad in Sweden and then take it down to his home country Switzerland. He has done a fantastic restoration and rebuilt of the boat, here I help him to make a page with information about his fantastic project:

    vehicles/helmuts-sindbad/01-helmuts-sindbad.html
    (Helmut's C. G. Pettersson cruiser Sindbad, built 1914)

    Today I came in contact with Willy and Rasmus, two of the earlier owners and they could give us more information.

Helmut is eager to know everything about the history of this boat, if you know anything, let us know!

Helmut's C. G. Petterson boat Sindbad

January 6, 2019

  • I have found new information in my investigations about my father's Petterssonboat. Maybe it's not a C. G. Pettersson design but a Victor Israelsson:

    Evert's Mahogany cruiser Monalisa, part I, Sweden
    (My father's Pettersson cruiser Monalisa, owned 1964 to 1973)
Everts's C. G. Pettersson or Victor Israelsson cruiser Monalisa

December 18, 2018

Sweden Lappland, 2002

November 20, 2018

Chrysler Crossfire, replacing the heater blower

November 17, 2018

Star Adventurer and angled viewfinder

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)

February, 2019

It could be as bright as magnitude +7, you need at least a binocular to see it.

Seiichi Yoshida's home page
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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.

7 februari, 2019

2019

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