The Begemann Binocular stand: Saturday 19th August 2017.

At the February 2017 Southern Star Party (Go here to read more about this event) Deon and Ronelle Begemann unveiled their binocular stand.  It is basically the standard parallelogram design but it is very affordable, very easy to put up and it works superbly well and would make an affordable addition to any astronomy enthusiast’s equipment. This is a photo review of the apparatus and for more details and a price, you must contact Deon directly.

These are Deon’s contact details.
This is the whole package which comes in these two handy carry bags. It is not a small piece of equipment as can be seen. The main portion, consisting of the tripod and parallelogram-mount, is in bag A. Bag B contains the counter balance chain as well as various other small essentials.
The contents of Bag-B; The counter balance chain and four parts of the binocular mounting system.
The actual apparatus and its tripod.
The tripod and its three struts. The three struts come in the small bag and that is inserted between the tripod’s legs when stowing everything away.
The assembled tripod with the tree stabilizing struts in place.
TOP: This is the head of the tripod with the bolt and wing nut to hold the rest of the assembly in place. BOTTOM: The parallelogram assembly mounted on the tripod head.
TOP: The struts for the tripod are held in place by wing nuts. CENTRE: One leg of the tripod with a strut fixed on either side. BOTTOM: The tree struts, which hold the tripod’s legs firmly in place.
TOP: The end-view showing the position where the binoculars will be mounted. BOTTOM: Side view of the binocular mounting head.
TOP: The battery holder and switch for the LED-assembly. BOTTOM: The LED is in this hole and is intended for use at night to warn people moving around that there is an obstacle.
TOP: This threaded rod with the two nuts forms an integral part of the counter balance system. BOTTOM: The counter balance chain attached to the threaded rod with two carabiner clips.  By adjusting the position where this chain hangs on the threaded rod one creates an effective counter balance for the binoculars at the other end of the assembly.
LEFT: Without either binoculars or counterweight attached the assembly looks like this. RIGHT: With only the counterweight chain attached the cleverly designed leg at this end comes into play. By supporting the counter weight-end it prevents the binocular end from lifting up and making the mounting of the binoculars difficult.
TOP: This assembly will hold the binoculars in place. The threaded rod on the right-hand side is used to adjust the position of the binoculars when viewing. CENTRE: The binoculars rest on the blue bar and the screw, which can be seen protruding from the metal strip in front of the bar, screws into the binoculars. BOTTOM: This handle is used to adjust the angle of the binoculars when viewing. NOTE:  All these components were in bag-A with the counterweight chain.
TOP LEFT: This would normally be the view from below the mounted binoculars. TOP RIGHT: Side view of the mounted binoculars. BOTTOM LEFT: This would normally be the top view of the mounted binoculars. BOTTOM RIGHT: This is the view from the eyepiece end of the binoculars and now the handle for adjusting their angel can clearly be seen in its correct position.
TOP: View from the front of the mounted binoculars. BOTTOM: View from the side of the mounted binoculars and here the wooden handle that has to be attached to the rod for adjusting the tension of the angle control for the binoculars can clearly be seen.
TOP LEFT: View from the front of the complete apparatus and you can see it is beautifully balanced. CENTRE LEFT: The support leg and counterweight chain well clear of the ground. BOTTOM LEFT: These are two washers that were left over. This is a special gift I have that whatever I assemble there are always bits left over. The only surprise, in this case, is that there were only two bits left. TOP RIGHT: The whole apparatus viewed from the counter balance-end with the binoculars at the far end.

 

Outreach by StarPeople for SKA-Africa during National Science Week 2017 at the Iziko South African Museum: Thursday 17th August 2017

Thursday required an early start to beat the infamous N1-traffic and have breakfast at the Rcafe in Long Street (go here to find out more) before starting our day. We left Brackenfell at 05:17, which was actually later than our original ITD of 05:00. ITD? My shorthand for Intended Time of Departure. We were parked in front of Rcafe by 05:45 which meant that the trip had taken us a mere 28 minutes. As soon as the doors opened at 06:00 Lynnette and I went inside to order two much needed Americano’s to start the day properly. What really amazed us was that the owner and staff recognized us the moment we walked in the door and it was a few days more than a year since we’d last been there! Auke arrived shortly after us and ordered his cappuccino. After breakfast, we headed for the Iziko South African Museum (click here for more information) where Benjamin was waiting to unlock the gates for us and set out the traffic cones to prevent vehicles entering our display and observing space in the amphitheatre. The weather was clear but blustery. The wind was, in fact, such a nuisance that I eventually took down and put away the posters, as the frames were being badly scratched every time they toppled over onto the brick paving. Anyway, by 08:00 we were ready to roll and all we needed was a visitor or two, which we soon got.

TOP LEFT: 05:20 and on our way to Cape Town for an early breakfast with Auke at the Rcafe in Long Street. CENTRE LEFT: View from the Gardens with the posters up, telescopes aligned, solar filters taped and waiting for the people. BOTTOM LEFT: View from the Museum with Auke making last minute adjustments. TOP RIGHT: I quite honestly do not know what on Earth I was doing here. Perhaps trying to get an upside down view of our Universe on the poster? BOTTOM RIGHT: This group was from Germany and apparently unable to speak English so the guide worked through a translator. The guide was not wearing a badge and when Lynnette asked him why not, he put his finger to his lips, refused to sign our register and disappeared very quickly with his group.
TOP LEFT: This huge group of highly mobile, extremely vociferous, perpetual motion entities were disguised as pre-school children but I wasn’t fooled. TOP RIGHT: Looking through the telescope seemed to limit them to a single location for a very short period of time before they shot off again at high speed exercising their vocal cords to maximum effect. BOTTOM LEFT: Edward talking to Jay van den Berg, one-time archaeologist and now Karoo Palaeontologist at the Iziko South African Museum, after having been poached by Dr Roger Smith. Nice meeting you Jay. BOTTOM RIGHT: Interspersed among the myriad of short people were teachers and a few parents who seemed to create small islands of order and stability around themselves as they moved around.

Thursday’s are popular school days at Iziko and we had three groups that we managed to convince that they should take a peek at the Sun. There were several other school groups whose teachers waved us away when we invited them to view the Sun. Being a weekday many of our visitors were from outside the country’s borders as most South Africans were hard at work earning an income. Many of the tour guides with the groups declined to let their tourists take a look at the Sun. Their reason was mostly that they had a schedule to keep to and did not have the time. Nevertheless, we had groups from Gabon, Thailand, Hong Kong, France, Netherlands, Israel, and Germany.

TOP LEFT: Auke showing a group the Sun and discussing Solar Physics. TOP RIGHT: An attentive group waiting their turn to look at the Sun with Auke. BOTTOM LEFT: This local couple was far more clued up about things like Space Weather than the average visitor. Always pleasant to talk to people that know enough to ask some testing questions. BOTTOM RIGHT: This visitor conveniently helped himself to a view of the Sun while Edward answered questions in the background.
TOP LEFT: Edward and a group of younger visitors accompanied by a watchful parent. TOP RIGHT: This very well organised primary school visited us with their teachers. It was lovely having such an orderly group. BOTTOM LEFT: A teacher keeping an eye (and ear) on Auke as he talks to a group of learners. BOTTOM RIGHT: Lynnette, with a young person, who was so eager to look at the Sun that he couldn’t wait for the ladder, but stood on the tips of his toes to reach the eyepiece.

It was also nice to have the research staff from the backrooms of Iziko pay us a visit. I was especially pleased to make the acquaintance of Jay van den Berg a palaeontologist on Dr Roger Smith’s staff and Clair Browning the newly appointed Curator of the Karoo Collection.

TOP: Auke with some members of a group that came through in the morning. BOTTOM: Packing up. It never ceases to amaze me that, despite careful planning, there are always things that don’t seem to fit where they were when one unpacked them.

The problem of getting people to sign our visitor’s book was highlighted for the umpteenth time. Many people who viewed the Sun through our telescopes flatly refused to sign the list and some actually became quite agitated when asked to do so. This problem is exasperated when one is busy and you simply do not have time to chase after people and ask them to sign. So, once again, our signature total (288) and counter tally (597) do not agree. I am more convinced than ever that the answer lies in devising a means to automatically count the number of people who look into each telescope’s eyepiece.

Because the Sun appears as a very bland and uninteresting white ball as a result of of the solar filter fitted to Lorenzo, many viewers say it looks like the Moon. So I decided to do some experimenting with filters to make the image more “exciting”. The images were all taken with my mobile and I am afraid that I do not have the world’s steadiest hand, so the photos are not of the best quality.

TOP: The Sun viewed through a 25mm eyepiece on Lorenzo, the 10”Dobsonian. Lorenzo was fitted with a solar filter constructed with Baader AstroSolar™ Safety Film. I think the focus is reasonable for a mobile phone. CENTRE: The same setup as in the first photo but with a Baader Solar Continuum Filter (CWL 540nm) added to the eyepiece and I am clearly struggling more with the focus than in the first photo. BOTTOM: The same setup as in the first photo but with a Meade Series 4000 Filter No 23A added to the eyepiece and here my focus is much better. NOTE: All photos were taken with my Samsung A5 mobile at the eyepiece.
TOP: This is the image of the sunspots for the day as provided by the Solar Dynamics Team with the Earth to give one perspective. I am afraid that between Lorenzo and I we cannot quite manage this. BOTTOM: This is an enlarged view of the sunspots on the bottom image of the previous group of photos. I have flipped the photo so that the layout matches that of the top photo.

 

Outreach by StarPeople for SKA-Africa during National Science Week 2017 at the Iziko South African Museum: Sunday 13th August 2017

Sunday was an almost perfect day for an outreach event in the amphitheater of the Iziko South African Museum (click here for more information) in Cape Town.  Lynnette and I, unfortunately, got there a bit later than we had intended. Auke had almost finished setting up by the time we arrived and we just managed to get Lorenzo setup before the first visitors put in an appearance.

TOP LEFT: All packed up in the new workhorse, courtesy of SKA-Africa (Click here for more information). TOP RIGHT: Snorre putting on his pissed-off-to-be-left-behind act. BOTTOM LEFT: The start of a table cloth on Table Mountain had me a tad worried because once the South-Easter gets going you do not want to be in the amphitheater in front of the Iziko South African Museum with telescopes, banners, and posters. BOTTOM RIGHT: The first group in were Dutch tourists, here gathered around Auke with Lynnette lending a hand.
TOP LEFT: Lynnette and Auke showing a small group the almost spotless sun through Lorenzo the 10” Dobby. TOP RIGHT: Edward, who actually remembered the ladder this time, helping a brightly dressed young lady to look at the sun. BOTTOM LEFT: Rose’s Egyptian geese and this year’s batch of young ones on a morning stroll. In 2009 they were officially declared a pest in the United Kingdom. (Click here for more information) BOTTOM RIGHT: Auke in a serious discussion with a small group of visitors.

While we were setting up, Benjamin, the museum security guard, came round to say hello and put out the traffic cones thereby preventing people from attempting to park among the telescopes. Throughout the rest of the day, he appeared every now and again, keeping a watchful eye on the ever present idlers and strollers who often have less than honest intentions.

In the background are our banners; the SKA banner is partially hidden on the left, with the striking StarPeople banner in the middle and the impressive Sun banner on the right. In the foreground, three guests try out the solar viewing glasses.
TOP LEFT: Three guests heading for the museum after Lynnette showed them the sun and Auke taking a break in the background. TOP RIGHT: Auke and a small group of tourists at the telescope. BOTTOM LEFT: Edward, Lorenzo and a young astronomy enthusiast. BOTTOM RIGHT: The museum building reflected in our new 4×4 vehicle supplied by the SKA.
TOP LEFT: The very striking StarPeople poster designed by Auke and beautifully framed thanks to Dirk’s donation of the frame. TOP RIGHT: Edward in conversation with a group that eventually showed interest in attending the next Southern Star Party too. BOTTOM LEFT: Late afternoon visitors and you can see the shadows of the trees encroaching on our viewing territory. BOTTOM RIGHT: A bee that seemed to have trouble flying for more than a short distance at a time was rescued after almost being stepped on.

We had a steady stream of visitors throughout the day. However, every time a tour group passed through the activity around the telescopes peaked and required all hands on deck. It was really a pity that, other than one lone sunspot (2670) which was about to disappear over the rim of the sun, there was no activity to be seen. I found the overseas visitors far more aware of astronomical matters than the South Africans. Having said that though, Lynnette had one local three-year old who knew the names of all the planets and, when quizzed, also knew which planet was the smallest and which was the largest!

TOP LEFT: Lynnette and I would love to take this vehicle out on the back roads up in the Northern Cape. TOP RIGHT: Auke pointing out matters of astronomical interest on some of our A3 posters mounted on hardboard. BOTTOM LEFT: Lynnette, Lorenzo and a couple of enthusiastic visitors. BOTTOM RIGHT: Lynnette urging a family to buy the Sky Guide (go here to find out more) and become clued up amateur astronomers.

All in all, it was a very pleasant day with the wind dying down by mid-morning and the few clouds that there were never really posing a serious threat to our solar observing. One of the problems, that occurs every year, with this kind of event is the effort to get people to sign our visitor’s register. Some people just refuse point blank and others again refuse to give contact details. During periods of high activity, when everyone is manning a telescope, we also lose signatures because there is nobody available to monitor if visitors sign the register or not. Our counters, as is usual, gave far higher figures than the number of signatures but, because one is busy with visitors, one probably also misses visitors with the counters. Maybe we should get some inventive person to install a counter at the eyepiece that counts when people look into it.

TOP: Everything cleared up and packed away as we prepare to head for home. BOTTOM: The Tygerberg against a clear blue sky and the unusual treat of having the N1 relatively traffic free.

 

Outreach by StarPeople for SKA-Africa during National Science Week 2017 at the Brackenfell Public Library: Thursday 10th August 2017.

Thursday was a very different kettle of fish at the Brackenfell Public Library compared to Tuesday. No sun, lots of low gray clouds and a cold, blustery north-westerly wind. We implemented plan-B and moved inside, as discussed previously with the library staff.  Amanda helped us get organized in the library hall and pointed out the spots in the foyer we could use for posters and A-frames.

Despite putting up notices inviting people to come and flummox us with their astronomy queries we had the grand total of two visitors the entire morning. Those two were actually old friends, Billy and Halcyone Brits who had heard that we would be there and come specially to see us.

TOP LEFT: The entrance to the Brackenfell Public Library against a cloudy background. TOP RIGHT: One of our signs attempting to entice interested persons into our Astronomical clutches. BOTTOM LEFT: Edward and the small group of learners at the start of the afternoon’s talk. BOTTOM RIGHT: Auke holding the attention of some learners.

The afternoon wasn’t much better as the cold weather seemed to have thinned out the number of learners quite drastically too. Following Lynnette’s suggestion, we gave a talk to the small group that was there.  This talk was one we had previously compiled with input from the staff at Boesmansrivier Primary School for use with their learners. The talk was quite enthusiastically received by the learners present. Their enthusiasm was, in fact, at times more than just a bit rowdy!

TOP LEFT: One of the slides in the talk which Edward uses to emphasize the negative effects of light pollution. TOP RIGHT: The age-spread of the learners in the group was quite large. BOTTOM LEFT: Auke discussing an issue with a small group of the learners. BOTTOM RIGHT: The talk actually held the attention of the learners remarkably well.

Murphy saved his final trick for the end of the day. When we tried to start the Vito and leave for home it refused point blank. Not too much of a problem as I had a spare battery at home.  We phoned a friend who nipped round, picked me up and dropped me at home. I picked up the spare battery, popped it into the boot of the Polo, and headed back to the Library where Lynnette was waiting.

Murphy now played his next trick. The new battery was about one millimeter too large to fit into the battery compartment of the Vito and the battery leads were too short to reach the battery in any other place outside the battery compartment, where we would be able to shut the door. Lynnette and I quickly ran through plans C to Y before I hit on plan-Z. I connected the spare battery and, while I was holding it, Lynnette started the Vito. Lynnette then kept the engine running quite fast and I disconnected the spare battery, connected the old battery, and slid that into the battery compartment. It all worked perfectly without any shocks, sparks or short-circuits. I was very careful not to throw a clearly crestfallen Murphy the middle finger as he has a very long memory.

Lynnette drove the Polo home and I followed in the Vito, finally bringing the day to a close.

Outreach by StarPeople for SKA-Africa during National Science Week 2017 at the Brackenfell Public Library: Tuesday 08th August 2017.

We set up just outside the entrance to the Brackenfell Public Library. The forecast said it would be a sunny day so we also put up our gazebo and decorated that with some of our banners. The banners look nice, provide added wind protection, make the gazebo sturdier and also help prevent uncontrolled access. Sunelle, Lötter and her staff used the material we gave them, predominantly from our own stocks, to put up displays in the entrance foyer and several other parts of the library

The Vito all loaded and ready to go.
LEFT: The cover of the mission MeerKAT booklets received from SKA-Africa. RIGHT: Part of the static display set up inside the library by the very helpful library staff.
TOP LEFT: Our setup as seen from the parking area by visitors approaching the front door of the library.  TOP RIGHT: Our setup as seen from a different angle in the parking area. BOTTOM LEFT: Lorenzo and I getting our dose of Cape Winter sunshine. Other than the learners we also had many people bringing young children to the library show interest. BOTTOM RIGHT: The flow of viewers fluctuated quite a lot during the morning but during the afternoon had much more activity and in a fairly steady stream.

As we have experienced in the past it takes a lot of effort to get the public to come and take a look, despite the fact that the telescope was very visible, as were our A-frames and pull-up banners. One has to resort to accosting people, as they approach the entrance and begging them to come and take a peek at the Sun and its lonely sunspot.

TOP LEFT: An enthusiastic group around Lynnette’s table.  TOP RIGHT: Some of the younger learners had the usual problem of not knowing which eye to shut when looking into the eyepiece. BOTTOM LEFT: Edward getting the sun into the eyepiece for the next viewer. BOTTOM RIGHT: Some of the older learners asked questions and while many of the others looked and did not show much interest.

This all changed dramatically during the afternoon when the schools closed; we were almost inundated!  The Library serves as a focal point for learners whose parents are at work as they also use the library hall to do their homework. The youngsters from the apartments across the road from the library simply use the library and environs as an entertainment area. For the latter group, our presence was a welcome added attraction to their normal routine.

TOP: The morning was generally slow with older adults coming in ones and twos.  BOTTOM: Edward taking a break during a quieter period in the afternoon.

Thanks to the sunny weather and the eager learners it was eventually quite a pleasant and productive outing.

Our spot, all cleared up in the late afternoon sun and waiting for our return on Thursday.

 

Partial Lunar Eclipse: Monday 07th August 2017

Lynnette and I set up Lorenzo in the rooftop parking area of the Family Pick & Pay on the corner of Old Paarl Road and H.O. De Villiers Street in Brackenfell. The event had been advertised via local social media sites and announcements were also made by the store manager during the course of the evening.

This graphic was borrowed from a Facebook posting by Willie Koorts of the SAAO, who is well known for his participation in the Radio Sonder Grense radio programme “Sterre en Planete”, which is broadcast every Sunday evening.
The photo was taken by Lynnette using her Samsung A5 mobile on the 20mm eyepiece of the 10” Dobsonian.
TOP: The Vito as the backdrop to our StarPeople pull-up banner.  BOTTOM: Edward on the left with Lorenzo just making it into the photo and Esther and Sewes from the local Neighbourhood Watch resplendent in their “Glow-as-much-as-you-can” bibs.
TOP: Edward and Esther discussing some serious astronomy.  MIDDLE: Two guests, all the way from Bellville, signing our attendance register.  Strange that many people just flatly refuse to do this.  BOTTOM: This group stayed for quite a while and showed a great deal of interest.

The turnout was disappointingly low but the few people that did turn up were very enthusiastic, which compensated for the poor attendance.

Light Snow at Leeuwenboschfontein

On the 16th of July 2017 Leeuwenboschfontein had a light sprinkling of snow and the staff there were kind enough to send us some photos.

Leeuwenboschfontein is situated in the Western Cape on the very western edge of the Little Karoo at an altitude of just over 1 000m.  It is a fantastic place for stargazing and observing and was the venue for the thirteenth Southern Star Party held in February 2017 (more about that event can be found here).  We are already planning the 14th Southern Southern Star Party scheduled for October 2017.

Make sure you are there.

A view across the dam behind the administration office toward one of the camp sites and the Swartberg in the distance.
Administration office on the left and the back of De Oude Opstal on the right
This is the lovely green lawn in front of De Oude Opstal and in the background, you can see the roof of the large shed where we have the talks. This lawn becomes the telescope area during a Southern Star Party.