Ed Mann

The PBO – First few days

Hi Folks,

As you’ve seen from Heather and Andy’s blogs, YES,IT’S ACTUALLY STARTED !!!!

I’ve been taking loads of photos and the timelapse camera seems to be working very well. So far it’s taken about 10000 photos. Of these, obviously only a small proportion are relevant, so if anyone wants 6500 photos of an empty field, let me know. The individual photos are 5MP

I’ve just added a few photos here of the important bit – the pier base. It’s the bit I was sweating about the most. The first pic shows Tim standing in the pier base former. He’s about the same height as me so you can see it’s going to be a fair chunk of concrete. As you can see from the second photo, the ground is anything but level. Three of us did a lot of checking to prove that the rebar skeleton is really vertical. I know it doesn’t look it !!! The land is on about a 7 degree slope in three directions.

The third photo shows the first concrete pour of the base , ready to be topped up when the full column is added. The final floor level is to the top of the plywood

The fourth pic is the completed footings just after the cement had been poured. Don’t worry, it’s not that shape – it’s a panoramic photo

I’ll be doing a full update at the RAG end of month meeting., along with my talk on fractals

I’ve tried to upload a low res version of one day’s timelapse (PBO12Nov_640_480.avi). It’s 29MB so I don’tknow if it will work.

When everything’s done, I’ll get Andy to upload the full version. With just 3 days of the build it’s up to 73MB so far but needs editing etc.

 

PBO12Nov_640_480

Adding an on/off button to Ed’s battery pack

Today, I have added an on/off button to the battery pack Ed made for me. I have used a car/lorry 12V on/off button from Halfords, 25A cabling and connectors. This button goes between the 75AH leisure battery and inverter and is meant to avoid the situation where I accidently leave the inverter turned on draining the battery as happened to me recently. It took quite some time to get this working although for some reason I have not managed to get the 12V light to come on on the switch when it is turned on. More accurately, I did get that working too when the switch was not installed on the side of the case but it has not worked since I drilled the hole and screwed it on to the case!

The location of the switch below the plug sockets is to avoid the switch foulibg the handle of the case.

Andy

Andy

Adding anti-slip rubber sheet of Ed Mann’s battery pack

Ed Mann built a fantastic battery pack for several members of RAG including myself. These packs are based around a 75AH leisure battery and provide 12V and 230V outputs abd plenty of juice to power anything we need in the field from mounts to laptops.

However they are quite heavy. To help with transpirt i purchased a Homebase foldable sack truck.

There was still a problem left – the battery pack is housed in a plastic box that tends to slip on the sack truck and fall off. Bungy cords provided part of the solution and today I added the second aspect: I glued 3mm rubber sheet to the bottom of the battery pack and now it will never slip again! To acheive this, I had to empty the battery box first before I coukd turn the box over, but I got there eventually and aI am pleased with the result.

Andy

 

Message from George – Greek astronomer from Skopelos

Hi Folks

I had a reply from George Mihail that I met in greece. It’s worth having a look at his website. Very interesting setup, a great view. The last photo is the latest live feed from his webcam at 1711 15th september. If you read further down, the english translation of my message is at the bottom

 

I

Dear friend
We manage to communicate and to take pictures of every activity of the stargate we have a very interesting winter here in Skopelos.Thanks with the best wishesGeorge Michail

https://www.facebook.com/george.michail.16

http://volnet.gr/home/index.html

——-Original Message——-

From: ed.mann@btinternet.com

Date: 12/9/2018 9:18:21 μμ

To: george@volnet.gr

Subject: Αστρονομία στη Σκόπελο (Astronomy in Skopelos)

Γεια Σας  Γεώργιος , το όνομά μου είναι Ed, σας μίλησα στη Σκόπελο πριν από λίγες εβδομάδες στο φεστιβάλ. Είμαι ο αστρονόμος από την Αγγλία.

Μου άρεσε να μιλάω μαζί σας και με ενδιέφερε πολύ να μάθω ότι έχετε ένα παρατηρητήριο στο νησί. Θα ήθελα να έρθω και να το δω την επόμενη φορά που θα είμαι εκε

Είμαι μέλος της Ομάδας Αστρονομίας Rosliston που συναντάει κοντά στο Burton on Trent στην Αγγλία (http://www.roslistonastronomy.org.uk/)

Αν κοιτάξετε την Αρχική σελίδα, εγώ είμαι στην πρώτη φωτογραφία (μπλε παλτό) και την 5η φωτογραφία (λευκό πουλόβερ). Μάλλον θα με αναγνωρίσεις από αυτό

Έχω επισυνάψει ορισμένες φωτογραφίες που πήρα. Ήταν τόσο ωραίο να βλέπετε κάποιον άλλον να κάνει δημόσια εκδηλώσεις προβολής. Κάνουμε αρκετά στο κλαμπ μας

Είπα σε άλλα μέλη για το γεγονός της Σκοπέλου και ήταν πολύ ζηλιάρης για το πόσο καθαρός ήταν ο ουρανός

Θα ήταν καλό να μοιράζεστε μαζί σας πληροφορίες και φωτογραφίες, αν θέλετε, και αν έρχεστε ποτέ στο Ηνωμένο Βασίλειο, θα ήσαστε πολύ ευπρόσδεκτοι να έρθετε στις συναντήσεις του συλλόγου μας

Θα σας δούμε το επόμενο έτος το 2019

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

My Greek is not very good so I have written it again in English just in case

Hi George, My name is Ed, I spoke to you in Skopelos a few weeks ago at the festival. I am the astronomer from England

It was great talking to you and I was very interested to know you have an observatory on the island. I woiuld like to come and see it next time I’m there

I’m a member of the Rosliston Astronomy Group that meets near Burton on Trent in the UK   (http://www.roslistonastronomy.org.uk/)

If you look at the Home page, that’s me in the 1st  photo (blue coat) and the 5th photo (white jumper). You’ll probably recognise me from that

I have attached some photos that I took . It was so nice to see someone else doing public outreach events. We do quite a few in our club

I told the other members about the Skopelos event and they were very jealous of how clear the sky was

It would be good to share information and pictures with you if you’d like, and if you ever come to the UK, you’d be very welcome to come to our club meetings

Bye for now

 

Ed changes the heat power control circuitry on the laser pointers he made for Damian and Andy

Ed’s laser pointers with integratedvheater straps and powered from 12V car battery thay he madr for Damian and myself are fantastic. However the power transistor gets quite hot so he came around yesterday and swapped the transistor for a small board that switches power on and off at high frequency so that less power is used and it does not get hot. Works brilliantly! Thanks Ed. This is what we should be able to buy commercially but can’t….

Andy

Stargazing in Skopelos, Greece in August 2018

Hi folks,

 

We’ve just got back from a holiday in Greece, and as part of a local festival of music, dance and culture, I met a really nice chap George (Giorgiu),who had set up a viewing area for the public to see the Moon (Selene in Greek), Mars (Aris), Jupiter (DIas) and Saturn (Kronos). That’s George checking the view of Saturn in the second photo

He has the first, and only, observatory on the island and it’s in a great location away from the town lights (the lat long coordinates are on the poster in the first picture)

He was interested in what we are doing too so I’ll drop him a line and hopefully get to see his obsy next time

Taken with NightCap. Long Exposure mode, 7.12 second exposure, 1/3s shutter speed.This was the night of the full moon (Sun 26th August 2018). Mars can be seen above the right hand set of masts although the photo doesn’t show very well here and I don’t know how to make it zoomable

Instruction manual for MayPole Electronic Smart Charger MP7423 6V/12V 4A included with Ed Mann’s ATM 75AH Astronomy Battery Pack with inverter

Click on the link below to download the instruction manual for the MayPole Electronic Smart Charger MP7423 6V/12V 4A included with Ed Mann’s ATM 75AH Astronomy Battery Pack with inverter. This charger is connected in parallel with the battery in the box to enable charging of the included 75AH lead-acid leisure battery.

Maypole Smart Charge MP7423 6V-12V 4A Instruction Manual July 2018 (PDF File)

Andy