Contains:  Star trails
From shortest night to equinox to longest night, Albert van Duin

From shortest night to equinox to longest night

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)
From shortest night to equinox to longest night, Albert van Duin

From shortest night to equinox to longest night

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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Description

Version A is a keogram of last night (20/21 June 2020). It is a panorama made from the central verical line of each seperate image from the AllSky camera. You can see stars and sometimes clouds passing the meridian in a keogram. Near the middle of the image you can find the constellations of Swan and Lyra.

At 53 North lattitude, there is only astronomical twilight for a month before and after summer solstice as you can clearly see in this image. Only narrowband imaging is possible now.

Time scale is in UTC and local time is UTC+2.

Click here to see the AllSky movie of the shortest night.

Version B was made on 21 September, a lot more hours of imaging time!

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Revisions

    From shortest night to equinox to longest night, Albert van Duin
    Original
  • Final
    From shortest night to equinox to longest night, Albert van Duin
    B
    From shortest night to equinox to longest night, Albert van Duin
    C

B

Description: Keogram made september 21 2020, equinox.

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C

Description: December 24 was kind of clear. The sun sets at 4:21pm local time and rises at 8:45am. Unfortunately we usually have a lot of clouds this time of year.

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Histogram

From shortest night to equinox to longest night, Albert van Duin