2016 Transit of Mercury – What a Day!

I met Mike Mills at 09:30 at our top-secret location where we store the Telescopes. Mike was extremely organised with his comprehensive check-sheet of required equipment and paraphernalia. We took about 30 minutes to load up, checking and double-checking everything. We were due to meet Mike Gover and Andy Noble at Hallam Square around 11am; as we had an hour or so to kill, we went for a coffee to discuss the game plan for the day – “Set up the scopes and see what happens”.

Gaining a preferential parking spot on Arundel Street ensured that we didn’t have too much work lugging the kit around. Then Darren Swindells and Stephen Jackson showed up, both armed with their own telescopes and imaging equipment, Steve with the Raspberry Pi camera and wireless access point.

Setup was fairly straightforward, although positioning of the newtonian side-by-side with the hydrogen alpha was more art than science, the problem being getting the positioning of the eyepiece easily viewable on both telescopes.

The day was blue skies from horizon to horizon. Sun cream was an essential. First contact was at 12:12, where Mercury started it’s journey across the face of the Sun. Some good sunspots and prominences were also visible.

All the equipment performed well, and special mention should be made of the new Televue and Explore Scientific eyepieces we have recently acquired. The view through the Howitzer/Baader Herschel Wedge/Televue Delos combination was simply spectacular. The new Orion Optics 8″ Newtonian proved to be an excellent purchase with the Seymour Solar glass filter on the front and the Explore Scientific eyepiece, although the focuser did require an extension tube.

We had several hundred visitors through the course of the day including a number of Sheffield Hallam University faculty members, students, commuters (a number of whom I suspect missed their trains), and general passers by. It’s a good location because of the amount of people passing by.

We closed the day when the Sun retreated behind the Saint Paul’s Tower at around 18:30, so we didn’t see last contact. All in all, we had an excellent day.

– Andrew Gilhooley

Image of Mercury Transit on the Synscan hand controller

Credit: Andrew Gilhooley

Setting up the telescopes at Hallam Square

Credit: Andrew Gilhooley

Solar alignment of the Howitzer telescope

Credit: Andrew Gilhooley

Aligned Howitzer Telescope

Credit: Andrew Gilhooley

Newtonian and Hydrogen Alpha solar telescopes

Credit: Andrew Gilhooley

Sun Box

Credit: Andrew Gilhooley

Sun in Sun Box

Credit: Andrew Gilhooley

Sunspots and Mercury

Credit: Andrew Gilhooley

Sunspots and Mercury with Labels

Credit: Andrew Gilhooley

Solar Telescopes at Hallam Square

Credit: Andrew Gilhooley

The Sun disappeared behind Saint Paul's Tower

Credit: Andrew Gilhooley

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Transit of Mercury Monday 09/05/2016!

Transit of Mercury
The 2016 Transit of Mercury occurs on Monday 9th May. We will be in The Amphitheatre at Sheffield Hallam University, Hallam Square with our solar telescopes. First contact is at 12:12, with the planet Mercury crossing the disc of the Sun reaching last contact at 19:42.
As always, take care when observing the Sun. The Sheffield Astronomical Society use specialist equipment with which the Sun can be observed safely. Please do not observe the Sun using any optical instruments unless you know EXACTLY what you are doing – you only have one pair of eyes, so let’s stay safe and do this properly folks. Hope to see you there at some point during the day!

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The Steve Adams Bursary

Under 18s can now join FREE!

A delighted Buzz Aldrin at last meets his hero, Steve Adams (Credit: Simon Howard)

A delighted Buzz Aldrin at last meets his hero, Steve Adams (Credit: Simon Howard)

Background

In his will, our late, former President Steve Adams bequeathed the sum of £300 pounds to the Society with express purpose of paying the annual subscriptions of junior members (currently £6 for a year). The society has also contributed an equal amount, and set up the Steve Adams Bursary, starting at £600. Steve was always extremely keen to encourage an interest in astronomy and spaceflight in the young, and the fund we have established will make it cheaper for young people or families to join us.

How it works

The Bursary will pay the renewal costs of existing junior members and the subscriptions of new junior members. A junior member is anyone who joins or renews their subscription before their 18th birthday. This scheme comes into operation on January 1st 2016 and will continue until such time as the fund is fully used up.

Note

Junior members under the age of sixteen must be accompanied by an adult at our society meetings (this does not apply to our free public observing events).

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22nd November STARGAZING Success

After the disappointment of cancelling the Stargazing evening of the 14th, we met a week later at our usual Stargazing venue of the Sportsman Inn on Redmires Road. The weather forecast was with us this time, showing clear skies until around 23:00. We arrived at 17:30 to set up, and although there was a fair amount of snow and ice around, we set up the Meade 10″ SCT and the Pashley 10″ Dobsonian without much trouble.
This left us with about an hour to kill before the event was due to start. The skies were slightly hazy which was disappointing, so we retreated to the warmth and comfort of the Sportsman Inn for a pie and an pint which as always were excellent.
With outside temperatures dropping, we headed back out to set up the tracking mount before the start of the event. The waxing gibbous moon offered no help for observation of any faint objects to the south, however we had some excellent views of the Ring Nebula (M57) through the 10″ Meade. We also observed the Pleiades (M45) and the Orion Nebula (M42), however the moon was bleaching out most of the faint fuzzies and no planets were suitably positioned for observation. The moon offered some excellent views with many craters along the terminator.
The clouds closed in on us at 21:30 which was a little earlier than the forecast, however we had a good evening with plenty of visitors a few of whom brought their own equipment and were conducting observations and imaging until we were clouded out.

Moon

Credit: Andrew Gilhooley

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October 14th Stargazing is CANCELLED

Sorry folks, but the forecast for Lodge Moor is a bit grim. It starts raining at 1pm and does not stop until tomorrow, so with regret, we’re calling off this evening’s Stargazing event (Saturday 14th October 2015). 🙁

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International Observe the Moon Night

Our first stargazing evening since April coincided with the International Observe the Moon night. We took this opportunity to try out out new acquisitions. In operation, we had:

  • Meade LX200R 10″ Aplanatic Schmidt-Cassegrain on HEQ6 Pro
  • The Mighty Howitzer (7″ achromatic refractor) on HEQ6 Pro
  • The Pashley (a donated 10″ dobsonian named for it’s late owner)
  • The Messier (a minimalist 13.5″ truss-tube dobsonian which is the most bizzare thing …)
  • Meade DS-2080 8″ Schmidt-Cassegrain (de-forked on a Celetron CG5-GT)
  • William Optics 72mm ZenithStar (refractor mounted side-by-side with the 8″ SCT)
  • SkyWatcher Heritage 72mm mini-dobsonian (to show what you can do with not a lot)

Steve Jackson also brought along his newtonian with the Raspberry Pi camera which you can watch over WiFi! This is an amazing bit of kit and you really have to come along and see it do it’s thing. It is a truly brilliant innovation.

All the equipment performed well, although it wasn’t a perfectly clear night with some high-haze. Saturn irritated by diving behind the tree-line before it was dark enough to get a good view. An iridium flare made a good show at around 8pm, and the food and drink at the Sportsman Inn were to the usual excellent standard.

Special mention of the Pashley telescope which surprised everyone with the quality of it’s optics. The primary mirror has seen better days, however in spite of this the views it gave were splendid.

A big thank you to everybody who came along!

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June Sungazing event is CANCELLED :-(

The Sungazing event in the Sheffield Botanical Gardens scheduled for Saturday 13th June is CANCELLED because it’s raining and all the weather forecasts agree that there is not going to be any sun to see today.

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Steve Adams (1957-2015)

Honorary President.
Leader, mentor, inspirer, but above all, friend.

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April Sungazing 2015

The first Sungazing event of 2015 was off to a cracking start in Sheffield Botanical Gardens. Although not completely clear skies, the cloud was broken enough to enjoy views through the Herschel Wedge (white light) and through the Hydrogen-Alpha and Calcium-K line filters. A few good prominences were visible and some minor sunspot activity with a couple of really good filaments across the surface which could only bee seen in the Hydrogen-Alpha. The Botanical Gardens is a great location for Sungazing. There are always people passing through, and there are plenty of nearby places to get an ice cream or a cuppa.

Credit: Andrew Gilhooley

Credit: Andrew Gilhooley

Credit: Andrew Gilhooley

Herschel Wedge, Hydrogen-Alpha and Calcium-K Solar Telescopes
Credit: Andrew Gilhooley

Credit: Andrew Gilhooley

Credit: Andrew Gilhooley

Credit: Andrew Gilhooley

Taken with an iPhone through the Hydrogen-Alpha eyepiece
Credit: Andrew Gilhooley

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Partial Solar Eclipse March 2015

Now the dust has settled and we can draw breath again it’s time to post an update from our Eclipse event.
Our preparations for the event started in January, when we formed an organising sub-committee, with our acting Vice President, Geoff Charlton at its head. This involved a few “fact-finding missions” (or going to the pub) to plan exactly what we wanted to do and if we could do it.
After that we went early one sunny Sunday morning at the end of January to the town centre in order to establish an optimum site for the event. The criteria were:
1. An unobscured view to the south-east during the known duration of the eclipse.
2. An area that maximised the number of members of the public who would participate.
3. An area where permission, if required, to stage the event could be obtained.
4. A contingency venue in case of bad weather.
5. Involving student organisations at both Sheffield University (SpaceSoc) and Sheffield Hallam University (SHU SEDS), to see if they were willing to help and share the event credit.
We then decided on what we would actually do. The plan was to take a variety of telescopes, all modified, or specifically designed, to allow safe observing of the sun. We also produced an eclipse information sheet which described how to safely view the event, how it would appear in Sheffield, how it happens, and information about future eclipses visible from Sheffield.
We printed many copies to hand out on the day, as well as creating a link on our website so it could be downloaded as a pdf file and printed individually.
Taking all the above points into consideration, we selected two venues, one of which was the top of Devonshire Green car park, but we decided the best venue would be outside the Owen Building at the top of Howard Street, which would not only attract students from both universities, but also passing members of the public on their way to and from the railway and bus stations. We then arranged by an exchange of emails with several departments at Hallam to get permission, which we eventually obtained. We also contacted the City Council about a contingency venue, and they suggested the Moor Market, for which they would charge us a fee, so we decided to ignore this. In February we ordered some eclipse glasses as we knew these would be like gold dust nearer the event.
Then we needed to organise ourselves into various “teams” so that everyone knew what they were expected to do, where and when to be, as the eclipse would not wait while we dithered and pondered. To that end we had a “loading team” to ferry the equipment to Howard Street, where they would be met by an “unloading and set up team” who would get on with things while the vehicles were taken away and parked. Meanwhile our “media team” would handle questions from the press, TV and Radio (in fact we did a radio interview less than one hour before the eclipse started). This would leave the rest of our crew available to interact with general public during the event. We also arranged to have a “Scotland team” to get pictures from Wick on the north coast – much closer to the line of totality than Sheffield.
On the eve of the eclipse the loading team, comprising of Geoff and myself went to our storage facility with a manifest of the equipment we were to take. We checked it all and arranged it so it could be quickly loaded in the morning. All that was left was to hope for fine weather. We had been constantly checking online weather forecasts, all of which gave conflicting predictions so it was just a case of “fingers crossed” at this point.
On the day, most of us were up at six a.m. and marvelling at the clear skies and bright sunshine. Geoff and I went to the storage location at 07:15, where we were met by an additional car. We loaded in under ten minutes and were on our way.
Arriving at the venue, the plan swung into action and worked flawlessly, except for the cloud that was encroaching from the north. By the time we had everything ready there was thick cloud and we could not align our computer controlled telescopes. A few people appeared and we told them about our equipment and what we were trying to do. Then the cloud gradually thinned to the point where we simply look at the eclipse without the protection we had been so strongly advising everyone about, but we missed the start (first contact). The crowd grew and grew, and at its peak we estimate there were 400 people there (and an estimated 1500 during the course of the whole two-hour event).
We handed out eclipse glasses, and people were sharing them around, chatting to complete strangers, and a kind of carnival atmosphere simply grew of its own accord. Many of our team took photographs of the eclipse and the crowd, while we were able to get pictures from Scotland on our mobiles. I took a moment to look at the crowd, and everyone seemed to be smiling.
At the end the crowd dispersed and we put our set up plan into reverse, returned our equipment to storage, the reconvened initially in the Showroom, and subsequently the Rutland for some much needed relaxation. Looking at the photographs later it is apparent that the society members and the public enjoyed it all immensely. We had achieved our goals, and had made a lot of people aware of the society and what we do. We have had many people joining our Facebook group and some new society members too.
Fantastic day.

1

Credit: Carl Davies

2

Credit: Carl Davies

3

Credit: Carl Davies

3a

Credit: Andrew Noble

4

Credit: Carl Davies

4a

Credit: Andrew Noble

5

Credit: Carl Davies

6

Credit: Carl Davies

6a

Credit: Andrew Noble

7

Credit: Carl Davies

8

Credit: Carl Davies

9

Credit: Carl Davies

a

Credit: Carl Davies

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