Really clear views of Venus in the South and a setting full Moon in the West as we went walkabout first thing this morning. Unfortunately by the time we had returned home Venus had gone all shy and was hidden behind thickening cloud. Fortunately the Moon did stay in view while I set up the 70D with the 100-400mm zoom lens and gave an opportunity for a few shots before it too disappeared behind the gathering clouds.
The final WidsMob Montage modified photo of 2018 was
which Adrian, Bettina, The Weaver of Grass, Wilma and Ragged Robin correctly identified as
the flower bud of a Christmas Cactus. Now in full bloom at just the right time.
Many thanks to everyone who has joined in and contributed guesses, usually correct, over the past year. I will have to have a hard think (not easy) in the new year what to do for some puzzle photos in the future.
Every few days I check the video recordings to see whether any activity in the camera nestbox has been recorded. All I usually see is a spider creeping about. That was until I checked yesterday and was delighted to see a very brief visit by what appears to be a Blue Tit. The visit was less than ten seconds so I grabbed a couple of blurry stills:
It just hopped down to the bottom and immediately hopped back up to the entrance hole.
Do you prefer to watch older films which didn't have to rely on gratuitous violence and foul language to be 'entertaining'? If so you may be interested in a free film channel I only found by accident.
Called TalkingPicturesTV it can be found on Sky, Freeview, Freesat, Youview and Virgin. They show a whole range of films from 1930's to 1980's. They include comedy, war, drama, mystery, SciFi and westerns plus some old public service information films, some from the British Film Institute and interviews with starts of yesteryear.
Obviously someone has to pay to keep a channel viable so, as is the way of things, it is supported by advertising breaks.
We are entering the annual Geminid meteor shower.
Instead of pretending to be a brass monkey standing outside watching for them I decided to try using them to communicate using amateur radio.
This is done with a special computer program which repeatedly sends bursts of very short signals for fifteen seconds and then listens for any signals for fifteen seconds. The transmissions are sent out in all directions. With luck a small portion will be scattered from the ionised trails left behind each meteor as it burns up in the atmosphere and picked up by another amateur radio station. Hence the mode of communication is known as meteor scatter.
I had installed the latest version of the software I use and gave it a try out.
Many amateurs link the software to automatically report any signals it decoded to a web site so I could see that my signals were being picked up in France, Germany, Denmark and Sweden as well as the UK.
Last night I made my first ever two way contact using meteor scatter with a station in Wales.
The program looks like this.
The top section shows a visual representation of any signals received.
On the left are the decoded signals.
On the right is what I send and what is sent to me.
M1BTR is my callsign. JO03 indicates approximately where I am in the country.
CQ means a general call for anyone to reply.
R, or sometimes RR, means message received.
73 is the code used for Best Wishes. Usually used as a Good Bye at the end of a contact.
Other numbers can refer to the strength of the received signal, time, and the frequency being used.
Many colours are used to make it easier to see what is what.
Red for messages transmitted to me.
Yellow for messages I transmit.
Green for any station I have made a successful two way contact with.
White for a message that is being sent between two other amateur radio operators.
Pink for a general call from a station I have not contacted yet.
A dark mauve would be used for a country I have not contacted at all.
Had a bit of a blenderising session with Blender running in Ubuntu.
Watched and followed the detailed instructions in the superb YouTube tutorial by tutor4u
(Wood Chipping Text Animation) but chose a different texture.
Next stage will be to use a different font now I have found out how to choose the one I want.
That's the theory, anyway.
It also needs a bit more depth / thickness.
Finally I need to find out how to make the background transparent.
Green screen wouldn't work as the hedge is green.
Might try a blue background.
Not certain yet what the finished video will be like.
The first idea was to have the message appearing from a wind blown hedge.
On Monday I had to visit our nearest village Post office and general store.
I always have a good look at the chilled area where produce from local butchers can be found.
The packaging not only gives a use by date but also the date it was packed.
A reassurance of how fresh the produce is.
Along with my favourite chicken and steak pies I spotted a pack of lamb steaks which I couldn't resist.
Today was the day to do something with them.
Out with my old, heavyweight deep frying pan.
Fry briefly in Olive Oil to seal them.
Then cover with with a 'gravy' made with chicken Oxo and Bisto beef gravy granules.
Cover the frying pan with a perforated lid.
Simmer while potato chunks and mixed veg are cooking in the steamer.
Sliced carrot, green beans, peas, cauliflower, etc..
The enticing, mouth watering odour was making us both drool while we impatiently waited.
I am getting a share, aren't I?
Not to worry. Plenty for both of us.
Needless to say her share disappeared in no time
I finished off with a Sainsbury's individual strawberry trifle
The common experience of all microscopists confirms the assertion made by Dr. Goring, that the most fascinating objects are living creatures of sufficient dimensions to be easily understood with moderate magnification ; and in no way can objects of this description be so readily obtained, as by devoting an occasional hour to the examination of the little ponds which are accessible from almost any situation.
The above quotation is from Marvels of Pond-Life by Henry J Slack F.G.S., second edition published in 1871.
In the same drop of water as the rotifer shown a few days ago was this almost transparent blob which appears to be an amoeba. The video was tinted to show it up better. No sound track this time.
This is a single cell creature with a nucleus (the dark dot) contained in a membrane. It captures its food by changing the shape of its membrane, surrounding and assimilating it. An activity I haven't managed to see as yet.
I count myself lucky to have spotted it. I have examined various drops of water over the past few years without seeing one. Optical magnification was around 400x.
and identified by Adrian, The Weaver of Grass, Ragged Robin, Wilma and Mick.
An activity which seems to have various names.
This is a photo I took some years ago on a visit to Covenham Reservoir in Lincolnshire.
For this week a non moving subject
but what is it?
Please leave any guesses in the comments.
They will be revealed, along with the original photo, next Monday.
Spent a while experimenting capturing microscope video clips on the iPhone6s.
The Apple photo app does a reasonable job but I found the free version of 'Moment - Pro Camera' gives plenty of manual control over still and video recording. The second section of the video was shot in 4K. Uploaded as 1080p
I put one small drop of water, from some old rain water which was full of green algae, on a concave blank slide. The largest living thing seen was the rotifer - still far too small to see with the naked eye. Magnification was around 250 times.
Colour fringing at the edge of the video can have two causes:
Phone not perfectly aligned.
The standard for objective lenses says that the centre 60% should be sharp but the outer 40% will show signs of softer focus and possible colour fringing.
If Humpty Dumpty could have un-birthday presents I decided I could buy myself an un-Christmas present. Regular readers may remember when I experimented with a video camera fixed (bodged) to a microscope. Some results were reasonably good, especially the video captures. On the whole I was disappointed with the clarity of some still captures. The problems were - having a camera with a relatively low pixel count coupled with the losses converting the feed through a USB connection on the laptop.
What was needed was a decent camera coupled to a microscope. Recently I saw two different microscopes advertised which include the facility to couple a mobile phone so its camera could be used. In the end I chose the National Geographic one. I did wonder about the quality of the optics and how robust the build quality would be at the price of £80.
This is the beast:
One item is now fitted which is not part of the original package - I found that the cross table which wouldn't fit my other microscopes was a perfect fit on this one. That makes it much easier to position a slide in just the right place or track a moving specimen.
Build quality is pretty good and solid. The three objective lenses (4x, 10x and 40x) seem to be of decent quality as are the two eyepiece lenses (10x and 16x) and the 2x Barlow lens. There is a choice of lighting from above or below. The only part to watch when in use is the phone holder. That is a platform covered in suction pads to hold the phone in place. I nearly had one disaster with that when the iPod I was trying out slid off. I found a solution, for my iPhone at least. It so happens I have it fitted with a magnetic back cover which is used to hold it in the phone case I use. I also have some powerful neodymium magnets. One under the plastic platform keeps the phone securely in place.
The phone only sees a smallish circular image but this can be digitally zoomed by its camera app. Though this will lose some definition it is not too much of a problem as the phone camera is 12M pixels.
Along with the microscope there are a few sample slides so here are some trial photos using the new set up.
This is the standard view without digital zoom
The hairy leg of a house fly:
80x optical magnification
Cross section of pine wood
I'm looking forward to taking some new videos of microscopic pond / water life.
Paid my regular visit to the Wagon and Horses in South Reston to meet up with D.
It was more than a bit breezy while driving there.
Twice I had to manoeuvre round fallen branches on the narrow back roads.
As always it was for a glass of J2O orange and a fish and chip lunch.
As ever the haddock was cooked to perfection in a light batter and accompanied by home made chips. Neither of us like mushy peas but with the fish overhanging the plate it was a very filling meal. An enjoyable way to meet and exchange news and gossip.
Set up a video camera to watch some bird feeders I had moved closer to greenery at the bottom of the garden.
Watch for any visitors on a monitor whilst listening to the radio.
Camera, set up in the kitchen, focussed on the feeders with wireless shutter control fitted. Sit in comfy chair in the warmth ready to press the button on the transmitter if and when anything comes to feed.
This is a thermal view of my air conditioning unit acting as a heat pump to extract heat from the outside air (presently at 9.3C) and keeping the room nice and warm. So, not a photo of a heating element glowing but showing the temperature of the warm air being blown out by the unit. This time I have set the Seek thermal camera to give a spot temperature reading.
There are many times I prefer to use the air-con for heating rather than the gas fire. It has thermostatic control and can be remotely controlled unlike the gas fire. It only needs to be on its low setting and the maximum energy used is around 500W, averaging about 300W.