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About ptatters

According to 23andMe I’m a bit of a mongrel, with ancestry from all over Europe. However, I identify as a Canadian and live in the middle of the middle-of-the-road province of Ontario. For the record in these times of turmoil, I would not particularly enjoy joining the USA: it’s too noisy! I believe in evidence-based reality, and I try to wear a Science Hat most of the time. Sometimes I get over-enthused, which can be amusing, but also dangerous to my financial health as I start buying things: I’m retired, so that can be a problem.

LX5 puzzlement

(First started writing this in 2010, but didn’t get around to posting till 2012. Urk)

Panasonic’s Lumix LX5 was a much anticipated update of their LX3 camera, and was released a couple of weeks ago here in Canada. I picked one up about a week ago, and after playing with it for a few days I’m a little concerned that I may have shot myself in the foot with the purchase.

Put simply, I’m unhappy with the JPEG images produced. The  images seem to be of lower quality than my previous pocket camera, the Canon SD1200 taken at the same ISO and at the highest quality setting for each. The Panasonic JPEG seems noisier, and the image overall seems softer.

It’s difficult to compare them directly, since while they are both 10 Mpix cameras, the sensors are different sizes, and their respective lens’ 35mm equivalents are not identical. Still, adjusting to give the same approximate size, the JPEG images on the Panasonic seem a little more blurred than those produced by the Canon. It seems to be a matter of choice on Panasonic’s part, and they chose to go with somewhat smaller, lower quality JPEGs. I’m not pleased by that, but I can live with it. Saving things in RAW form seems to be OK, and I can pull decent quality JPEGs from those images in Aperture, Photoshop, or even iPhoto. I guess I needed higher capacity memory cards anyway!

And the beat(ing) goes on…

This is something of a progress report and a self-indulgent moan combined.

I have no clue if this is normal – it may be that I simply read too much into things, and that exaggerate the severity of symptoms simply because I know that I should have them. However, this morning, on waking, I found myself unable to focus on a printed page.

I can read, but only by moving things around and interpreting the changing shapes, and this is a very slow process. An episode of scintillating scotoma which obscures a further part of my vision complicates things even further. As the morning advances I hope things improve (as they have been doing over the time it has taken to pick out this note). The scotoma should expand and ultimately disappear after about half-an-hour, and focusing should improve as my eyes dry out.

This is the shape of things to come, though, and it’s a depressing prospect. Still, though I stumble around the house I can still watch the sunrise and see the shadows shortening across the back lawn. I could wallow in gloom, or embrace the brighter side. For today, the whine has been poured out, and I’ll drink no more of it.

Blinded by the light … Or something

I recently got the news that my vision is going. Age-related blindness is something I was expecting, or possibly something related to my diabetes, but this turns out to be a little different.

The cornea is the clear covering on the outside of the pupil. It is made up of five layers: an outer layer of epithelial cells, a membrane separating them from the stromal layer (which is the main transparent layer), another membrane, and then the inner endothelial cells which protect the stroma from the aqueous humor which lies beyond. The endothelial cells pump any water which may have seeped into the stroma back into the aqueous humor, keeping the stroma clear. Unfortunately these cells are not regenerated, so if anything happens to them, the water is not removed and the stroma goes cloudy and “bumpy.” Vision dims and becomes less sharp as the condition worsens.

In my case, the endothelial cells are dying off, a condition known as ‘Fuchs Endothelial Dystrophy’ or sometimes as just FED. Fortunately there is a transplant treatment available in which donor endothelial cells are inserted under the stromal layer of the cornea. With this treatment I will probably end up with reduced vision, but not complete blindness. My corrected vision will be good enough for me to read, albeit a little more slowly than currently.

Of course, for this to work, there must be donors. Please sign your donor card now. Otherwise my minions will seek you out and hurt you….

Shock and uhh… Shock

I’ve known for a long time that I’m not the healthiest guy around. I’ve been a Type II diabetic – afflicted with what we used to call Adult Onset Diabetes, and before that, Senile Diabetes – for the past twenty years, and I started insulin earlier this year. I have a couple of conditions consequent on that, such as high blood pressure and minor tingling in my fingers and toes. I’ve also picked up a mild case of lymphedema, so I wear compression stockings to keep my ankles down to a reasonable size. Even so, I’ve always thought of myself as being in reasonable condition otherwise.

So, when my family doctor asked me to go in to repeat a couple of blood tests I didn’t attach too much importance to it. And this morning when she called me up to ask how I was feeling, I blithely answered “OK, pretty good, I guess.” Which turns out to be somewhat incorrect.

It seems I’m severely anemic, to the extent that, if I should feel a little dizzy, I should hie myself off to a hospital rather than book an appointment to see her. And in the meantime, stop drinking coffee or tea, start taking as much iron as I can, and get ready to see a couple of specialists lest I bleed out where I sit, because with numbers from the tests, it looks as though I’m leaking internally, even if I thought I was ok a few minutes ago.

“You’re sure you haven’t been dizzy? Or fatigued?” Well, not to speak of. I mean, I don’t sleep much – it cuts into my reading – so of course I occasionally nod off. And that’s part of being diabetic anyway, isn’t it? And dizzy? Isn’t that what I can expect, given that I take meds to control high blood pressure caused by diabetes? Apparently, “No,” to both questions.

So now I’m taking another set of pills, and I’m going to get poked and probed by another set of gloomy haruspicers. Sometimes ignorance really is bliss.

New version of the WordPress app

This is being entered with the latest (as of the date of posting) version of the WordPress app. I’ve had some problems with it already – mostly random crashes – but it seems to be a little more stable than the previous version. So far, at least, the entries have been recoverable after a crash. I’m suspending judgment for the moment – we’ll see how it goes…

Still lookin’

Currently I carry my iPad around in a Tracker case, which is basically a mini-messenger bag. Now there’s nothing fundamentally wrong with it, but I’m still nervous about using/carrying the ‘Pad in a public place. The Tracker is a soft case, and I worry that even a moderate impact could crack the screen.

As a result I’m looking with ever greater favor on the kind of case which offers a hard cover for the front of the ‘Pad (and I guess I’m going to stop using the apostrophe here -it’s starting to annoy me). There is a Dodo case which looks like a moleskin notebook which I kind of like. It’s made of bamboo, along other materials, so there is at least an implication of Eco-friendliness in the design (but how Eco-friendly can anything be which involves a glass and aluminum device like an iPad. It’s all illusion, sole and mirrors for the mind). The big problem I have with it is that it has a long wait period before delivery -and I’m heading off to Europe in a few more days, and so won’t be around to receive it.

Anywhatever, I’ll be keeping my eyes open for a case. If I spot one I’ll post an update here.

iPad app for Astronomy

Before anything else, let me report that I am trying to update using the WordPress app, and it’s not the most stable app in the world. I’m running a couple of very low volume blogs, and this one managed the get sufficiently screwed up on the app that just trying to access the posts resulted in the app crashing. Treating the blog as a brand new one allowed me to rebuild the settings and get access again. We’ll see how long that lasts.

OK, the real point of this post is that I managed to try SkyVoyager in it’s latest incarnation on the iPad, and it’s a dual iPad/iPod release. The full screen display is infinitely better than the cramped iPod display (even expanded using the 2x option), and the expansion pack allows me to see almost as much as I would on the desktop using my old Starry Night application. Since I don’t have a 3G iPad, I couldn’t check out the compass and orientation features but based on the demo from MacWorld 2010 that should be a useful item on the 3G version. I’ll be interested in seeing what a suitably equipped user has to say later in the year. [May 2 – As I found after posting, the compass and orientation can be enabled even on a WiFi iPad, but at least for me, the compass wasn’t accurate enough to be useful]

Another interesting but so far untested feature on offer is Telescope Control. If I can extend myself and pick up Carina’s SkyFI accessory, I would/will be able to run my Losmandy Gemini mount from my iPad, leaving my laptop at home for the evening, using my regular photographic cable timers to grab the imaging shots I want. That’s cool, but also useful, and I just may go for that.

Ouch! All fall down…

Trying to control a Dahon V folding bike the other day when the (kinda-weird) saddle fell off, I wound up taking a fall on my right wrist. I can’t say I was a happy camper. but I thought little of it right away. A few hours later was a different story, though, as, once I woke up for my usual old fogey 2 am call I couldn’t get back to sleep. My wife had a funeral to attend in the morning, but once she got back she drove me down to the local ER. I never realized how bumpy the roads were!

As it turned out there is a small triangle of cartilage in the wrist which cushions the bones of the forearm and helps anchor and direct various ligaments, and in breaking my fall I managed to tear it. A trio of X-rays confirmed that no bones were broken, and a half-cast to immobilize the joint saw me on my way. Don’t let anyone tell you that Canadian emergency room service is poor – I was through triage, checked by a doctor, into X-ray, and out with a cast on my arm in a little over an hour and a half, which I consider pretty good care. I have to go back to the Fracture Clinic in a couple of weeks for a follow-up visit, and I won’t hear anything about charges for care.

I’ll concede that the hospital wasn’t dealing with inner-city traumas, but I’ve been in hospitals where that sort of thing was being handled, and still was though in a matter of hours (while staff also handled a major accident, a couple of heart attacks, and what looked to be casualties from a gang fight involving knives). Everyone got seen according to priority – that’s what triage is for – including the dweebs with bad colds who hadn’t seen their family doctors all week and wanted service on a Saturday night RIGHT NOW (and to hell with the little kid who had fallen down a flight of stairs who came in after them). Canadian ERs do have problems with wait times on occasion, but it has always seemed to me that a lot of it is due to abuse of the service by folks who should have seen their family physician first or failing that should have gone to a walk-in clinic. At least everyone gets a good level of care, which some jurisdictions elsewhere can’t claim.

Anyway, my adventure with bicycling means I’ll be a little slower than usual making my way around town for a while, and my on-again off-again exercise program is once more on a back burner. I really can’t let that stand. Ben Franklin said he didn’t mind so much getting old as getting fat and old. I agree with him, but hopefully I will eventually be able to strike the f-word from my description.

Small stone, somewhat dull]

A big hello to all intelligent life out there! And to all the rest of you, the secret is to keep banging those rocks together!

A brief background: I am a fat balding white male, married with two adult (that’s what they claim) children, living in a suburb of Toronto. I recently came to the end of more than thirty years of white-collar work when my company management trimmed staff in North America as part of its process of global cost management. I won’t comment on that process as it applied to me specifically, but I believe that there is an element of the ‘tragedy of the commons’ as it works out in general. My interests are mainly in the sciences, but other areas attract my attention from time to time, so I can’t promise consistency in this blog. But there’s a whole universe out there – and I want to look at it!