Luca Zanini – Page 9

Bullialdus

Mar 6, 2021

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In this photo the most evident formation is the Bullialdus crater with a diameter of 61 km located on the western edge of the Mare Nubium, while on the eastern side of the Mare Nubium near the lower right corner of the photo there is Rupes Recta, a fault with a length of 110 km…

The Moon: Plato and Copernucus craters

Dec 29, 2020

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Luca Zanini

in Astronomy

On the night of December 26th 2020 I photographed the Moon 12 days after the new moon, then a crescent moon just some days before the full moon phase.

The opposition of Mars

Dec 12, 2020

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Luca Zanini

in Astronomy

A few days before the opposition of Mars, I got these four images between 20:15 UT and 21:25 UT on 13 October 2020.

The south pole of the Moon

Nov 30, 2020

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Luca Zanini

in Astronomy

This photo is one of the first photos taken with the new telescope on October 9, 2020 at 22:21 UT.

New Astronomy category in this blog

Nov 28, 2020

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Luca Zanini

in Astronomy

In the last 4 years I have not used this blog but now I want to resume publishing the photos taken with my new telescope.Astronomy has been a my hobby since I was a child, unfortunately I had to stop for many years and now I would like to start observing the sky again. On…

Saving and reading files in the internal storage

Nov 27, 2016

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Luca Zanini

in Android

You can save and read files in the internal storage as private files which only your app can see except for other apps with root privileges.

The class LruCache to manage a cache of bitmap objects

Nov 22, 2015

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Luca Zanini

in Android

The intensive use of many images in an app can create difficulties to the responsiveness and to memory, shown by warnings like ANR (Application Not Responding) or errors like OutOfMemoryError.

A List with a fixed size

Nov 15, 2015

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Luca Zanini

in Java

There isn’t a class that extends List for which you can set a limit on its size and that it behaves like a Queue object if you add an item beyond its fixed size.

Avoiding too frequent updates to the views

Nov 1, 2015

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Luca Zanini

in Android

In Android in order to avoid to do too work in the main thread, most of the operations should be carried out in a secondary thread or a class that extends AsyncTask; then the final results are reported in some view to be shown to the user using Activity.runOnUiThread(Runnable) or View.post(Runnable) (see Processes and Threads)…