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|Transit of Mercury 2016|
|Giving long exposures on a digital camera|
|Photographing star trails|
|Predicting the ISS and other satellites|
|Using a mirror to view a partial eclipse|
|Simple Guide to Viewing the Space Station|
|Choosing a Telescope|
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|Photographing a partial eclipse|
Here are predictions for eclipses that are reasonably favourable from the UK during September and October:
Times are in UT (same as GMT, 1 hour behind BST - so, for example, 22.7h UT is 23.7h BST)
Eclipses last 4.8h, with most of the brightness changes taking place during the middle 3 hours. The times shown below are for the mid-point of the primary eclipses. Eclipses are not quite total, so there is no spell of constant brightness at mid eclipse.
Eclipses of U Cephei are rather inconveniently timed during September and October for observers in the UK. By early September, mid eclipse is occurring well before the end of evening twilight and so only the later stages of the eclipse can be seen at the start of the night. From the end of September onwards, eclipses become increasingly better placed in the morning sky. Initially, only the start of each eclipse is observable, but by mid October mid eclipse is occurring before the onset of morning twilight.
Eclipses last for approx 9 hours. The times shown below are for the primary eclipse mid-point. Eclipses are total, so there is a period of constant brightness around the middle of the eclipse.
U Coronae Borealis
Corona Borealis is reasonably well placed in the evening sky ... but is sinking towards the western horizon as the evening progresses. From late October onwards, it also starts to become visible in the pre-dawn sky. During the autumn months, the interval of observability is too short for the whole eclipse to be observable in one session.
Eclipses last for approx 12 hours. The times shown below are for the primary eclipse mid-point. Eclipses are not total, so there is no spell of constant brightness around the middle of the eclipse.
Beta Lyrae remains well placed for observation before midnight, but is becoming low in the sky towards dawn.
Both the deeper primary eclipse and the less deep secondary eclipse can be followed visually. There is no period of constant brightness between eclipses.
|Aug 31 - Sept 1||primary|
Beta Persei (Algol)
Algol is now much better placed for observation in the night sky.
Eclipses last for approx 10 hours. The times shown below are for the primary eclipse mid-point. Eclipses are only partial, so there is no period of constant brightness around the middle of the eclipse.
Added by: Tracie Heywood