0 Persons are tagged with #backyardastronomy

#backyardastronomy

mkwadee@diasp.eu
Khurram Wadee

If you take an #overexposed #photograph of the #Moon, you may often notice a dark #halo around its #perimeter. This #evening's #Picture was taken at #dusk and the #sky was still quite light despite the deep blue it looks here with this exposure. It was taken almost exactly 36 hours before the next #FullMoon.
Dark halo around bright Moon

Here is a much faster #exposure where the sky appears black. This one is cropped.
Cropped image of Moon

#MyWork #MyPhoto #CCBYSA #DSLR #Nikon #D7000 #BackyardAstronomy #WaxingGibbous

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mkwadee@diasp.eu
Khurram Wadee

One #Moon, three #exposures. These #photographs were taken seconds apart this #afternoon, around #sunset, and yet look quite different simply because of shutter speed. The most striking difference to me is the #colour of the #sky.

The first one has an exposure time of 1/160 s.
Moon 1/160 s

The next one has an exposure time of 1/320 s.
Moon 1/320 s

And the last one has an exposure time of 1/640 s.
Moon 1/640 s

#MyWork #MyPhoto #CCBYSA #DSLR #Nikon #D7000 #BackyardAstronomy #WaxingGibbous

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mkwadee@diasp.eu
Khurram Wadee

Here's #Venus again #tonight but my attention was also drawn to some of the faint stars around it. At about the 10:30 position is #PsiSagittarii which has an #ApparentMagnitude of 4.85 at a distance of nearly 300 #LightYears. The other one which is currently closer to the #planet and at about the 9:30 position is #HIP94434 with an apparent magnitude of 5.75 and is about 1700 light years distant. Thanks to #Stellarium for providing the data. It's amazing that such dim stars can be seen with a non-specialist #lens and #camera.

#MyWork #MyPhoto #CCBYSA #Nikon #D7000 #BackyardAstronomy

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mkwadee@diasp.eu
Khurram Wadee

Another #night and another #photograph of #Jupiter. This time you can three of its four big #Moons (they are #Ganymede, #Callisto and #Europa).
Photograph of Jupiter and its moons
I've also included the #snapshot from #Stellarium so you can see the names of each.
Stellarium snapshot of Jupiter

If you compare tonight's #image with the #photograph from 11 days ago, you can see how much Jupiter has moved with respect to the background starts of #Capricorn. Planets literally are wanderers.
Former image of Jupiter

Of course, the real question is this: Is Stellarium a good model of reality or is reality a good model of Stellarium...

#MyWork #MyPhoto #CCBYSA #DSLR #Nikon #D7000 #BackyardAstronomy #Planets

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mkwadee@diasp.eu
Khurram Wadee

I think of myself as a hobbyist #photographer interested in many things, including #astronomy and sometimes I get lucky. Tonight, for example, I noticed #Jupiter was close to the #Moon and so I got my #tripod out and tried to #photograph the pair. Currently, both are in #Capricorn and to get both, one needs a longish exposure. Here I used 2 s. This of course means that the Moon's features can't be seen as the lit surface is #overexposed but you can see its unlit side too.

The very nice thing about this image is that you can actually see Jupiter's four largest satellites too, so you could say that the photograph actually shows five #moons in total. Jupiter is forming a triangle here with #DenebAlgedi (bottom left) and #Nashira (bottom right)
The Moon and Jupiter at its moons

By focusing around Jupiter itself, you can see its moons much better. From left to right, you can see #Europa, #Io, #Ganymede and #Callisto. The three #stars forming a diagonal line are, respectively, 45, 44 and 42 #Capricorni (left to right).
Close up of Jupiter and its moons

#MyWork #MyPhoto #CCBYSA #DSLR #Nikon #D7000 #BackyardAstronomy

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