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© Croydon Astronomical Society 2012 Croydon, Surrey, England. Charity Registered in England and Wales No. 251560

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Croydon Astronomical Society
est. 1956

Solar SUNday 24th June, 11 am to 3 pm (or later), observing the Sun using a variety of solar telescopes.

At our observatory at Kenley. Open to the public. We held a successful event.

In the same format as in previous years we opened from 11 am to sunset (and then into the night as it was still clear) using equipment from several members. We had the usual white light for sunspots but also Hydrogen alpha for prominences, filaments and flares. In addition to visual observing some members managed to image the Sun, with results to be seen there and then, and will be shown below soon.

Please note: this ‘open to the public’ event is organised by the society and several safety rules and guidelines apply.

Looking at the Sun can be dangerous; attendance at the event is conditional by all attendees following the rules and guidelines on the day. Never touch or view through any telescope without the owner being right with you.

Any non-member bringing equipment must have its use authorised by a committee member. Do not use any equipment without it being specifically modified for safe use on the Sun.

This event as always is dependent on the weather so please look out for late notifications (particularly on the morning) on this website, Facebook and our forum.

Though we are aiming for the 24th, if the weather is poor then it may be postponed to the following week, Sunday 1st July, as either of these dates are close to the summer solstice when we traditionally hold this event. If the 24th June goes ahead we may also hold the event again, as detail on the Sun is always changing.

As usual, given it'll be in daylight and the duration of the event, you may wish to bring some food and drink. We have hot water so everything else will need to be provided by yourselves.

Weather permitting, towards evening the large and bright planet Jupiter will be seen in telescopes, even from about 8 pm against a blue sky, with the ringed planet Saturn visible from about 11 pm. The waxing gibbous Moon will also be visible from early evening.

Waterhouse Lane, off Hayes Lane (west of Kenley Aerodrome) CR8 5EP.

Please note: there is no parking at the observatory itself (motorcycles are allowed).

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Useful links:

The Sun in ordinary white light is displayed daily here (amongst other things):

Spaceweather

The Sun in the narrow waveband/bandwidth of hydrogen alpha light:

Halpha.nso.edu

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Solar SUNday 2018 - We held a successful event

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Ordinary white light                               Hydrogen Alpha light                                  Calcium K light

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