Archive for April 2008

Observing Report 17th-18th April 2008 Part 1 (Plenty of wobbly bits)

Posted by on April 20th 2008 in Astrostuff, Observing Reports
Tags:

After a long run of cloudy nights a clear one was well overdue, and I was on standby, ready and waiting to get out there to try out the replacement Baader Hyperion 3.5mm eyepiece.

The skies southwards were clear, but the Moon in Virgo meant that there was a lot of glare down the scope OTA when viewing Saturn. That, coupled with the poor seeing (warm day, cold night etc. etc.) meant that imaging was always going to be a low-quality affair. Indeed, the conditions were too bad for viewing at 3.5mm (x285 mag), so I had to settle for 8mm (x125 mag) on the zoom, which is fast becoming my favourite eyepiece.

WinStars screenshot

Anyway, I managed to get a fair batch of .avi files of Saturn and of parts of the Moon before condensation set in and covered the scope mirrors, terminating the observation session.

It'll take me a while to plough through the imaging data getting rid of the bad frames using VirtualDub, but for now here's a 30-second loop of the bottom edge of the Moon, as captured with the SPC900 webcam, to give you some idea of just how wobbly the view gets when the seeing is poor:

Just in case you were wondering what's what, here's the key:

If I get any half-decent images out of the mass of video data, I'll post them tomorrow.

Ten top tips for healthy feet

Posted by on April 17th 2008 in A bit of a rant, Health, or lack thereof

The experiences of yesterday evening compel me to post this list of tips for outdoors folk who need to keep their feet in tip-top condition:

  1. DO NOT struggle all day to put up a new bathroom ceiling on your own
  2. DO NOT lose your temper with the above to the point where the red mist descends
  3. DO NOT sling your tools across the room in a fit of pique
  4. DO NOT rant around the house swearing like a demented Coprolalia sufferer
  5. DO NOT decide that the best way to manage your anger is to take it out on a "convenient soft inanimate object"
  6. DO NOT single out the blue bag for recycling waste paper as your chosen "convenient soft inanimate object"
  7. DO NOT kick seven shades of crap out of the chosen "convenient soft inanimate object"
  8. DO NOT recoil in agony when you find that somebody has filled the chosen "convenient soft inanimate object" with a huge pile of telephone directories and old BBC Good Food magazines
  9. DO NOT remove your footwear to find that what was your size 8 foot is now at least a size 10 and has changed colour from a pallid flesh tone to a combination of black, blue, purple and brown blotches
  10. DO NOT expect any sympathy from the rest of the household when it's time to walk the kids to school the next morning

😥

MI

Posted by on April 14th 2008 in Astrostuff
Tonight I was on a mission. Covert ops. The remit was simple - find somewhere dark and quiet to set up an observation outpost. I slipped out of the base at 2130 hours after being given my RV time by the CO - I had 2 hours max. Armed with little more than DPM trousers and a map of the district, backed up by a couple of hours of studying Google Maps (latest issue - with contours) I patrolled the local lanes seeking somewhere to lay up the transport and set up the surveillance equipment alongside. Prime One was a locality that I used to visit in my youth, before I signed up. It was much as I remembered it, a rough track led to the crown of a hill, wooded on the northwest side, open to the other three points of the compass. Whitemoors. Of Battle of Bosworth fame. Still an ideal military point of vantage, except for the anti-vehicle barrier and the barbed wire intended to prevent access after nightfall. The group of other transports obstructing the entrance harboured a group of ne'er-do-wells and their stash of supermarket lager, which gave them the dutch courage to jeer and throw cans as I started to move away. Stirred but not shaken, and caring not for their cherished paintjobs and spoilers, I flicked off the traction-control and floored it to give their tin boxes 180BHP of newly-spread road-grit and then I moved on - Plan B would have to be implemented. Five clicks west and one south... this used to be an unlit country lane connecting a couple of small farms to a remote village, the only other buildings being barns near the road. I recall plenty of places to pull off the track. Not so any more - each farm is now a mini-estate, each barn is now a prime residence, complete with CCTV and faux antique streetlights. No chance of seclusion here. I turned in one of the driveways and noticed disapproving faces at the pseudobarn windows. Ho hum, back to the tarmac, mission in the balance... Taking the most direct route back to the RV, I was diverted by a Council Forces roadblock and soon found myself on an open lane that I didn't recognise. Open. Dark. Quiet. A sign indicated a pull-in, I duly did so. I got out and scanned the horizon - clear views all around, not a single light except for the glowing tip of the ciggie which I had lit to celebrate. And it was quiet, except for the foxes and owls in the woods a few miles away. It was perfect, yet I was a little perplexed... where was I? With all the diversions I had lost track of my position on my map, and the road was unfamiliar. Then inspiration struck - I cranked up the xDA Orbit satnav to get a fix and stood there stunned by the result. I was only a straight mile and a half away from the village where I had spent nearly thirty years of my childhood. I must have been along this lane many times before, but still I didn't recognise the place. I arrived back at the RV still confused. I'll have to do another recce in the daylight tomorrow. Nevertheless, the mission was accomplished, a site for the outpost had been determined. Therefore it will rain. Incessantly.

Saturn reprocessed

Posted by on April 6th 2008 in Astrostuff, Observing Reports, Pics
Tags:

As promised in my previous Observing Report, here's the final version of the Saturn pic that I made a few days ago:

All I've done is neaten up the edges by applying a mask, bring up the contrast and saturation on the face of the planet by using the burn tool, and desaturate the background. Yes, I know, I've probably overcooked it. I did use a reference picture for the colours in an attempt to keep it looking real.

Alpkit goodies

Posted by on April 5th 2008 in Shiny new kit
Tags:

Today saw the arrival of a couple of Filo jackets, just in time for the snow that we've been promised over the next few days. These follow hot on the heels of the Hunka bivi bag which I put my name down for at the Outdoors Show. My thanks go to the Alpkit team for their commitment to customer service and for their never-fail next-day free delivery policy.

This influx of new kit has rekindled the outdoors spirit in Chris - all of a sudden, she's reminding me that we've still got to sort out our annual wildcamp together, and that we've got to get the kit lists sorted for our family summer holiday in Norway and Denmark.

Observing Report 3rd-4th April 2008 (standing on the shoulders of giants).

Posted by on April 4th 2008 in Astrostuff, Observing Reports
Tags:

Last night I managed to sneak out for another attempt at webcamming Saturn with the scope. The seeing was much better, but there was a lot of cloud about which meant that I had to wait for gaps in order to capture data. To get some idea of the improvement in the seeing, here's a 20-second snip from one of the .avi files, in .mp4 format:

These .avi files were taken with revised settings as per the advice of the folk on the SGL Forum, and because of their suggested improvements, this stacked interim image is my best one yet:

I'll finish it off later, when I've more time to learn all about the use of Photoshop layers. Hopefully I can sharpen up the edges and enhance the surface detail without losing more than I gain.

I would have taken more pics and looked at some other celestial gems, but the temperature dropped and all the mirrors dewed-up, so I had to pack away. Never mind, there's plenty of future to look forward to.

Onwards and upwards!

I'll post the settings here for reference:

******** Capture Settings:03 April 2008 / 22:37:32 ********
Program       :WcCtrl - WebCam Control Utility (V 1.5.46)
Cam Driver    : Philips SPC 900NC PC Camera (0xaf42ab7)
Comment added : a comment
******** Capture Cam Settings:03/04/2008 22:37:32 ********
Set-String    :
Brightness    : 69%
Contrast      : 51%
Saturation    : 31%
Gamma         : 26%
Color Mode    : 255(0=off)
WhiteBalanceM : 4(0=lamp,1=sun,2=FL,3=manual,4=auto)
WhiteBalRed   : 51%
WhiteBalBlue  : 52%
FPS           : 15
NonSC Exposure: 2(0..10=longest to shortest - depends on camera)
Gain          : 81%
FlipHorizontal: 0(0=off)
FlipVertical  : 0(0=off)
AutoExposure  : 0(0=off)
AutoAll       : 0(0=off)
-end of setting------------------------------------------------