Astrophotography, the beginning.

As mentioned in a previous post, I'm recently bought a new telescope with the thought of using it for astrophotography.

Now, seeing as the last part of the order turned up a little over a week ago, the equatorial wedge, I'm finally in a position to start on the project in earnest. To this end I went out shopping on Saturday for a camera and a machine to drive the camera and the 'scope.

Having read quite a great deal and seen images which other people have managed to take, I opted for the Nikon D90 as the camera body to obtain. Currently, it's probably the best time to get one of these cameras as it is about to be replaced by the D7000 and hence the street price is at its lowest. Waiting for the D7000 to appear would be counter productive as it will not only be at a premium price which is almost double that of the D90 but also doesn't have anything really to help with the task at hand. (The main improvements over the D90 are in the realms of auto-focus and a more robust, and heavier, body.)

Unfortunately, because it is about to be replaced it is becoming scarcer, which meant that I could only find it as part of a kit with a lens I don't actually need. Oh well.

On the control machine front, I picked up a netbook. The twin-core, 1.6GHz Atom processor powered Acer Aspire-One 533 should be ample for the task. There's not a great deal of processing power required to control the camera, acquire the images or run Stellarium or similar to drive the 'scope. I just need to get a serial cable now.

Anyway, Saturday evening was a beautiful evening with crystal clear skies, which gave me a good opportunity to have a first experiment.

The results? Well, OK for a first attempt. It's very difficult to get a good focus when looking though the viewfinder. My first target was the Moon:

moon1

Not too bad for a first attempt.... Then over to the Dumbell Nebula:

dumbell1

As you can see, this 60 second exposure really shows up the problem with light pollution in the area I live. I'm going to have to look into getting a light pollution filter.

Finally, I spent a little while trying to image Jupiter. The best I managed was this:

jupiter1

I'm definitely going to have to look into ways of getting a sharper focus. Not all of the fuzziness is caused by atmospheric disturbance.

Anyway, following on from my photographic exploits I noticed one of the Jovian moons, Io, coming out from behind the planet. It's amazing but you can actually see it move relative to the planet with the gap visibly changing in only seconds. It must be moving at quite a speed.

Still, I'm not likely to get another chance to play in the near future, looking at the weather forecast. The next items on the shopping list: landscaping with paving and a rolling roof observatory such as this:

observatory
observatory

The end of an era, or should that be epoch?

Yesterday was the last day of the move of the University of Oxford Department of Earth Sciences from the building(s) it's occupied since 1948 to the new building just around the corner. (The chemistry labs are still situated there until November but the building is now technically "owned" by Chemistry.)

This was the end of an era for me as well. I was the first person to move into the extension in late 1992, getting key number 139, and my office was one of the last to get moved out as well. So, I've certainly been the longest resident. Yesterday I handed that key back for the very last time, after having it in my pocket continuously for 18 years almost to the day. The end of another era.

The new building is very different from the old one. It's light and airy but also more "corporate" and soulless. One real benefit is, however, that the common room is on the roof and last night, at the weekly Happy Hour, it was very pleasant sitting on a sofa with only the spot lights switched on watching the nearly full Moon climb above Headington Hill intermittently shrouded by scudding, silver-rimmed clouds and the sky changing from a light turquoise to a dusty dark blue over the period of an hour or so.

Still, the only constant in life is change and I can see that the new building *IS* an improvement in many ways from the old one. There are things the old building had which were better, such as a larger library, but on the whole there are fewer of those than than the new one's advantages. Let's just see how things progress...

 

A tale of two telescopes.

I've just taken delivery of a new Meade 8" LX90-SC telescope and tonight had the first chance to take it for a spin, as it were. This is despite the British weather trying its best to get in the way. Still, the breaks in the cloud were big enough for me to align the 'scope.

I have been surprised by the contrast between this 'scope and the one I bought for my Dad the Christmas before last, however. That 'scope seemed to be a Friday afternoon job. It arrived with the wrong type of Autostar controller and the battery boxes weren't (and still aren't) connected properly. Also, it was far harder to get it to align properly and never seemed to do so accurately enough. His 'scope is a 10" Meade LX90-ACF (i.e. has the more expensive optics).

My new 'scope, on the other hand, seems far better put together. Other than a slightly bent bolt on the tripod, which is used to hold the 'scope on the tripod, everything is in good working order. Not only this but the alignment process actually works and works well. I think this is partly helped by the replacement of a electronic compass and level (which never seemed to work) with a good, old-fashioned compass with a bubble.

Just to show how good the alignment and calibration was, I set the 'scope to point at Jupiter about 10 minutes before it rose above the roof of a near-by house. (It also happened to be in cloud as well, but that's beside the point.) When it did appear it was right in the centre of the field of view. I didn't need to tweak it at all. This never was possible with my Dad's 'scope.

Also, the image was a great deal better than with my Dad's 'scope, and the magnification seemed higher (with the same type of eye-piece), even though they're supposed to have the same focal length. This was very unexpected as the 'scope is smaller and has the cheaper optics.

Am I happy? Yes. Other than the minor problem with the bolt, which makes it slightly more difficult to set the kit up and dismantle it again, it's actually better than I expected.

 

In a spin: Speed cameras and the fallacy of road safety.

Recently, with the cut in funding and subsequent turning off of speed cameras in Oxfordshire there has been a great deal of chatter about how this will increase the numbers of deaths on the roads. Today had the local speed camera organisation, "Thames Valley's Safer Road Partnership", spouting statistically unsustainable statistics about how many people were now breaking the speed limit as opposed to when the cameras were operational. (Notably, they didn't say by how much the speed limit was being broken by. Also, one location is notorious for chavish lads driving recklessly, which wouldn't be halted by the camera.) www.bbc.co.uk/news/uk-england-oxfordshire-10929488

Two days ago we had another pressure group and a number of police chief constables put their oar in: www.bbc.co.uk/news/uk-10911436. One basically saying that there would be carmogedden and the other blaming the middle classes for speeding "until one of their family got killed." That second one is laughable if you've ever lived anywhere close to a "working class" neighbourhood.

The trouble with all this spin and hoo-hah is that the evidence for speed being the main killer on the roads is just not there. In 2008 only 14% of road accidents had speed as a contributory factor. www.dft.gov.uk/pgr/statistics/datatablespublications/accidents/casualtiesgbar/rrcgb2008 Note that this is ALL accidents reported to the police and not just lethal ones. So, speed cameras, even if they were 100% effective, would not help in 86% of accidents.

So, now we know that speed is not as high a risk as the quangos who run the cameras and the police forces (who don't want to spend money on traffic enforcement officers) would make out, do cameras actually help at all?

Well, in some locations I'm sure that they do. In most locations, however, they're more of a hazard than a help. How many times have you seen a car brake heavily (usually from a speed under the speed limit already) to pass a speed camera? I've seen it quite a number of times, causing the cars behind to have to make sudden braking maneuvers themselves. i.e. increasing the risk of an accident. Also, forcing drivers to be more concerned about the absolute speed of their vehicle and watching the speedo more and more decreases the time they have to concentrate on other road hazards or taking note of what an appropriate speed for the situation might be, again increasing the risk of an accident.

If you add to this the congestive effect of cars slowing to well below the speed limit to pass the cameras and, on a road close to capacity, causing the generation of a solitary wave of congestion to pass back along the queue causing a complete jam.

What about the other "safety" features imposed by local authorities on the roads in the name of safety?

Well, there are the extensive 50 mph speed limits which seem to encompass huge swathes of the A road network. It seems that the default reaction when there are an above average number of accidents on a road is to restrict the speed limit by a mere 10 mph. The fallacy here is that doing so will automatically cut incidents.

Let's break down the logic using a specific example, the A420 between Oxford and Swindon. There are a few places where the junctions are relatively blind and would benefit from the traffic being slowed. It could be said that in these areas 50 mph is still way too high and a 40 mph limit would be more appropriate in the close vicinity of the junction. However, for most of the road the national speed limit of 60 mph is not a dangerous speed (under good road conditions). The majority of fatal accidents on the road, however, are from drivers who have been reckless and have been speeding, losing control of their vehicle on bends. Note: these people are already breaking the speed limit.

So, the knee-jerk reaction has been to decrease the speed limit on about two-thirds of the whole length of road to 50 mph. Firstly, his will not help to greatly reduce the danger on the risky junctions as the time to see a vehicle from the junction before turning out onto the road has not decreased by much. Secondly, those who caused accidents by speeding recklessly will still ignore the speed limit. (And no, more speed cameras wouldn't help.)

In other words, the responsible majority have been hugely inconvenienced and no real good has come from it other than to allow the councils to say that they're doing something.

Of course, I am talking heresy. Tut-tut. The slogan says, "Speed kills!" but actually it doesn't. Changing the slogan to "Inappropriate speed is highly risky" wouldn't go down well as it's not punchy enough. Of course, it's not the speed which kills ultimately, it's the rapid deceleration.

Just my two-penny's worth...

Task completed: Some thoughts on the experience.

On Tuesday evening I took off the kilt for the last time. The month had passed relatively uneventfully but in the end I was glad that I could change back into trousers again.

The kilt was generally very comfortable to wear and after the half way mark had become "normal" as had not wearing any underwear beneath the kilt. Gone had the feeling of being naked in public and it was now natural.

No, none of these were the reasons that I was glad that the month had ended. Kilts are merely inconvenient. Or rather, the gubbins associated with them are a pain. You see, the kilt itself does take extra work to put on and take off but then there is the sporran, which needs its chain to be thread through the loops at the back. It needs to be taken off whenever you go to the loo and gets in the way when driving. It's also not as good as a good pair of pockets for storing things.

The kilt itself is a pain in the behind, literally, when sitting in the car. The bucket seat design forces you to sit on the copious pleats which then after a few minutes create pressure points. Driving for more than a quarter of an hour is highly uncomfortable.

Having said all that, I'm glad I went through the experience and I would recommend that everyone try wearing a skirt (let's face it, that's what a kilt is) without anything beneath for at least two weeks, preferably three. The first two weeks are to get used to the feeling and the third to show yourself that it is actually a perfectly valid thing to be able to do infinitum if wanted. Also, it'll show you that there's nothing sexual about such a way of dressing either. Maybe if everyone did this there would be less prejudice about clothing choice.

Will I wear a kilt again? I don't know. Not to work, even though a number of people have said word to the effect that they miss seeing me in the outfit. (There are a few who are glad that I'm back in trousers.) I've found the change back to anonymity interesting as well. People are truely strange creatures, especially those who allow clothing choice to colour their whole world.

And what about the transition back to trousers? Well, less of a bother than expected. It did take a few hours before I could feel comfortable again but after that had passed it was back to normal again. Still, trousers with undies underneath are certainly more sweaty and probably far less healthy in warm weather.

And what about the charity fund raising? Well here I am totally amazed. Currently the sum is approximately £1100! I never thought I'd get anywhere near the £1000 mark and I've topped it. This is very good news.

And so, now life goes back to normal and I can climb ladders or lift heavy objects off the floor without worrying that I'm going to give someone a view they weren't expecting. In that way being back in troose is very liberating. :-)

A week to go and three gone by.

Well, by this time next week I will have finished my calendar month long task of wearing a kilt. Essentially, it will end with me changing into my badminton gear after getting home from work.

I must admit that it will be strange to go back to wearing trousers. Wearing the kilt has become very normal now. What I won't miss will be the long socks (which are hot and itch in this weather) and the masses of pleats at the rear of the kilt which make sitting in the car very uncomfortable and actually painful after a while. Oh, and then there are the inconveniences of all the tackle such as the sporran and the belt.

Having said that, walking around (when the sporran is lightly loaded) is very comfortable. So, they do have their advantages.

The other thing I'll have to get used to again is the anonymity in the street. But then again I've now got so used to the looks that I hardly notice them any more.

Anyway, there's still a week to go, though I don't see any major challenges to overcome during that time, other than warm weather.

The iPhone 4 and Bluetooth keyboard… It works!

Well, I’ve been testing out the usability of a ThinkOutside Bluetooth keyboard which I bought originally to go with my Nokia N800 with the Apple iPhone 4.

Well, as you can see, it does actually work and works well.

If you add a proper keyboard to the high resolution of the iPhone 4′s display then it actually makes for a decent “on the go” blog updating device.

Well, it would if the WYSIWYG editor plug-in for WordPress would actually work within Safari, which it doesn’t. This means that you are forced to revert to the WordPress application and its insistence on the document being prepared in plain HTML. Not (non-technical) user friendly at all. (And a bit of a pain even if you are technically minded.)

By the way, to prove that it’s possible to do it, this article has been written entirely on the iPhone 4 + ThinkOutside keyboard combination.

Oh, and one very useful thing is that the “web application” key on the keyboard emulates the big button at the bottom of the iPhone.

And now it’s half way…

I can't believe that it's been about a week since my last update. Then again it's been pretty busy and I've hardly spent any time at home. Anyway, on with the post.

Well, it's now been a little over two weeks since I started wearing the kilt and there's approximately the same to go until the 3rd August, the last day of the challenge. So, how have things been going?

In general, there's not a huge amount to report on the actual kilt wearing side other than all of a sudden it's started feeling scarily normal. That is, since yesterday it's not felt unusual at all to be wearing essentially a skirt with nothing underneath, to the point where I'm forgetting about it. Previously it's been comfortable but unusual. I'm going to have to be more careful to remind myself how to sit etc.

The only real down side to wearing the kilt is that it's a faff to get in and out of the car and the bunched up kilt is darned uncomfortable to sit on when driving. I s'pose it was never designed for car driving.

As for people's reactions. I'm still seeing a very mixed bunch, though I'm noticing it a lot less. I was out around town on Friday evening and the reactions I got ranged from an old woman scowling and saying, "Why?! Why?! Why?!" under her breath to a student aged woman saying, "I like the kilt. I've been trying to get my boyfriend to wear one but he won't. More men should wear kilts." Admittedly, the great majority of people seemed to either not notice or mentally blank it out.

I have had even more positive reactions today, however. Firstly, when I was walking to buy lunch, a fellow came up to me and asked what sort of kilt it was. I explained that it was just a casual kilt and happened to be black. Anyway, the conversation continued and it turns out that he works in the Pitt Rivers Museum and had now had the idea that maybe it would be interesting to try wearing a kilt.. So, I may have a convert!

Secondly, someone who used to work in our accounts department came visiting the Department. She thought that my kilt looked really go and, once again, that it suited me and why didn't I continue to wear it after the month s up? This was echoed again elsewhere by one of our Chinese academic visitors. She thought that too many people in the Department just wear the same old clothes and so why didn't I keep wearing the kilt?

Is there a secret society out there trying to persuade me?! :-)

As for my colleague's reaction. Other than an initial, mild reaction at the IT support staff conference there's been no problem, thankfully. So it's all good.

Anyway, two and a bit weeks to go!

Passing the quarter mark.

Well, I've been wearing the kilt for a bit over a week now and I've passed the quarter mark for the challenge.

I must admit that on the whole, so far it's been easier than I imagined to begin with. The reactions have been nowhere near as negative. I have found it surprising how many people continue to tell me that the kilt suits me and that I should carry on. I'm still not tempted to do so yet.

Over the weekend I did quite a long trip away from home, going to a party in Warrington, staying overnight in a hotel and coming back via Chester to meet up with some more old friends. Again, this was easier than expected. I had thought that being so far away from any items of underwear would make me more nervous. In the end it didn't bother me at all. Maybe I am getting fully used to the whole thing.

This morning, due to the rain, for the first time in almost a week I had to wear clothing which encased my legs (waterproof trousers). I was surprised to find just how really uncomfortable it was. These trousers cannot be said to be at all tight. In fact they're really baggy. However, they felt so very restrictive and the seams literally painful. I'm wondering now how the shorts I wear for badminton will feel tomorrow evening. Of course, it also makes me wonder how the transition back to wearing trousers on the 4th August will be as well.

Still, I have three weeks to go yet and I've got to get through the University IT support staff conference on Wednesday, including bowling in the evening. I've also got the return to work of my colleague on Thursday. She had a very poor reaction to my wearing of the kilt for the photoshoot and I'm just hoping that she can get over her aversion quickly.

I do hate causing some people to be uncomfortable but there's not a great deal I can do about it.

 

Kilt wearing: Days three to five.

Well, there's not a great deal new to report on the actual kilt wearing. I think I've worked out all the day-to-day problems. There's still a surprising disparity between people's reactions. Thankfully, most reactions are either that they ignore the kilt now or, when I'm walking outside of the Department, sometimes amusement and sometimes trying not to look as though they're looking.

There was one item of note, however, and that was badminton on Tuesday evening. Now, during the day there's a roll-call e-mail which goes around. Of course, there was the obligatory quip about me wearing the kilt to badminton in the evening, followed by a few more. So, I thought, I'd better make sure that this was not the general view. After all, if everyone wanted me to turn up wearing the kilt maybe I should. Anyway, thankfully sanity prevailed and I wore my normal t-shirt and shorts. What did surprise me was that after only about two and a half days of wearing the kilt the shorts felt so alien and uncomfortable. Goodness knows what it's going to be like by the end of the month.

I think that at the beginning of next week I'm going to send out second general e-mail to both the departmental and the IT support staff lists reminding them of the kilt challenge and how to sponsor me.

As for the donations so far, the total is up to £428 so far. I wonder if I can make it £1000 by the end of the month. I somewhat doubt it.