View allAll Photos Tagged Compacter
A nearby compact blue dwarf galaxy, NGC 5253 was imaged with Hubble's High Resolution Channel (HRC) on the Advanced Camera for Surveys (ACS) to produce this image. A lot of hydrogen gas is present here and is most evident in the narrowband H-alpha filter which appears here in vivid reddish magenta. Numerous young, massive star clusters full of massive stars are visible as mottled, bright, blueish patches.
This is a very close look at the nucleus and star-forming region of the galaxy. Just enough detail is revealed for me to guess at what I'm looking at, and yet not quite enough for me to feel sure. One of the bright patches near the center is rounder and slightly yellower, causing me to suspect it is an old globular cluster. What is interesting to me is that some of the bluer clusters visually appear to have comparable diameters and densities. Pretty impressive. I suspect they contain fewer but brighter, more massive stars.
I am fond of these old ACS/HRC datasets because they are comparatively rare since the HRC stopped functioning in June 2006 and never came back online even after the servicing mission which repaired the rest of the ACS. The observations comprising this image were acquired five months prior in February 2006.
Glancing at the abstract for this paper, we might expect this to one day be observed by the James Webb Space Telescope.
Data primarily came from the following Proposal: Sizes, Shapes, and SEDs: Searching for Mass Segregation in the Super Star Clusters of Nearby Starburst Galaxies
Note: Some lower resolution ACS/WFC data from LEGUS (Proposal 10765) was used to fill in the missing data where the occulting finger was. Some older WFPC2 F656N data from Proposal 6524 was used to slightly enhance the ACS/HRC F656N data.
Red: ACS/HRC F814W + ACS/HRC F656N
Green: ACS/HRC F550M
Blue: ACS/HRC F435W + ACS/HRC F330W
North is NOT up. It is 25.4° clockwise from up.
A very basic Compact. Top spotting points if you see one of these now.
Plate comes back to a Piaggio T5 (a scooter?)
From where I sit at this moment, Orkney seems so remote. It's easy to forget that it sits just off John o' Groats and was a bit of Scotland nibbled away and submerged at the end of the Last Glacial Period. Prior to that, the lowered sea levels left Doggerland high and dry — a convenient stepping stone for humans to repopulate Britain from the rest of Europe. Yes, I've been to the very north of the archipelago, to North Ronaldsay. Today I'm away to South Ronaldsay — ironically juxtaposed at opposite ends from its northern namesake. This won't take me to Orkney's most southerly isle, Stroma, which to be honest has less water between it and Scotland that it has between itself and the rest of Orkney.
Here's a reminder of how compact these islands are. This is the northern tip of Glimps Holm looking back across Lamb Holm to Mainland. By now I've crossed two of the causeways constructed as navigation barriers in WWII. There are what appears to be military installations, there on the cliffs of Lamb Holm. In the middleground lie relics of the block ships sunk here early in WWI. I think this was the SS Numidian, an almost 5000 ton steel hulled steamer scuttled here on 30 December 1914. She was sunk in the company of SS Aorangi, SS Thames and SS Minieh with, I think, Numidian in the shallow water near this spot. I could be wrong. If you need a better answer there's a kind of trainspotters' guide to the wrecks of Scapa Flow.
Orkney is so user-friendly. It's a small place, compact, packed to the gunwales with history; so much that with sea level rise its, Plimsoll line is in peril of disappearing beneath the waves. Getting about is quick and easy; all that and it has a village named Twatt.
Car: BMW 316i Compact.
Date of first registration: 17th March 1999.
Region of registration: Swansea.
Latest recorded mileage: 13,578 (MOT 28th March 2019).
Date taken: 16th August 2019.
Album: Street Spots
Car: BMW 316 Compact (E36/5)
Date of first registration: 6th March 1995.
Registration region: Newcastle-Upon-Tyne.
Latest recorded mileage: 61,125 (MOT 9th November 2018).
Date taken: 19th March 2019.
Album: Street Spots
Not many if any places to see a pair of SD35's running now days in the US, here GLC 383 and 384 work the interchange with the Ann Arbor RR at Osmer siding just north of Ann Arbor, Michigan. Nice compact packages these SD35's seen from above, if only EMD had cataloged an SD30, that would have been a pretty swell looking unit - August 23, 2024.
The news of the passing of the Dutch engineer who invented the audio Compact Cassette, Lou Ottens, got me to thinking how useful and handy these were back in the day and efficient - even a provision to prevent accidental ereasure. The quality of the audio wasn't up there with reel-to-reel, but they paved they way for portable music. Even after portable compact disc (which Mr. Ottens was involved in the development of) players came out, portable cassette players were the best way to go - easier to fit into a pocket and slower battery drain - though it took many years to get the player down to the size of the cassette itself. Until at least MP3 players came out, which like everything else digital revolutionized everything.
A compact experiment aimed at enhancing cybersecurity for future space missions is operational in Europe’s Columbus module of the International Space Station, running in part on a Raspberry Pi Zero computer costing just a few euros.
“Our CryptIC experiment is testing technological solutions to make encryption-based secure communication feasible for even the smallest of space missions,” explains ESA software product assurance engineer Emmanuel Lesser. “This is commonplace on Earth, using for example symmetric encryption where both sides of the communication link share the same encryption key.
“In orbit the problem has been that space radiation effects can compromise the key within computer memory causing ‘bit-flips’. This disrupts the communication, as the key on ground and the one in space no longer match. Up to now this had been a problem that requires dedicated – and expensive – rad-hardened devices to overcome.”
Satellites in Earth orbit might be physically remote, but still potentially vulnerable to hacking. Up until recently most satellite signals went unencrypted, and this remains true for many of the smallest, cheapest mission types, such as miniature CubeSats
But as services delivered by satellites of all sizes form an increasing element of everyday life, interest in assured satellite cybersecurity is growing, and a focus of ESA’s new Technology Strategy for this November’s Space19+ Ministerial Council
.
CryptIC, or Cryptography ICE Cube, - the beige box towards the top of the image, has been a low-cost development, developed in-house by ESA’s Software Product Assurance section and flown on the ISS as part of the International Commercial Experiments service – ICE Cubes for short. ICE Cubes offer fast, simple and affordable access for research and technology experiments in microgravity using compact cubes. CryptIC measures just 10x10x10 cm.
“A major part of the experiment relies on a standard Raspberry Pi Zero computer,” adds Emmanuel. “This cheap hardware is more or less flying exactly as we bought it; the only difference is it has had to be covered with a plastic ‘conformal’ coating, to fulfil standard ISS safety requirements.”
The orbital experiment is operated simply via a laptop at ESA’s ESTEC
technical centre in the Netherlands, routed via the ICE Cubes operator, Space Applications Services in Brussels.
“We’re testing two related approaches to the encryption problem for non rad-hardened systems,” explains ESA Young Graduate Trainee Lukas Armborst. “The first is a method of re-exchanging the encryption key if it gets corrupted. This needs to be done in a secure and reliable way, to restore the secure link very quickly. This relies on a secondary fall-back base key, which is wired into the hardware so it cannot be compromised. However, this hardware solution can only be done for a limited number of keys, reducing flexibility.
“The second is an experimental hardware reconfiguration approach which can recover rapidly if the encryption key is compromised by radiation-triggered memory ‘bit flips’. A number of microprocessor cores are inside CryptIC as customisable, field-programmable gate arrays (FPGAs), rather than fixed computer chips. These cores are redundant copies of the same functionality. Accordingly, if one core fails then another can step in, while the faulty core reloads its configuration, thereby repairing itself.”
In addition the payload carries a compact ‘floating gate’ dosimeter to measure radiation levels co-developed by CERN, the European Organisation for Nuclear Research, as part of a broader cooperation agreement
.
And as a guest payload, a number of computer flash memories are being evaluated for their orbital performance, a follow-on version of ESA’s ‘Chimera’ experiment which flew on last year’s GomX-4B CubeSat
.
The experiment had its ISS-mandated electromagnetic compatibility testing carried out in ESTEC’s EMC Laboratory
.
“CryptIC has now completed commissioning and is already returning radiation data, being shared with our CERN colleagues,” adds Emmanuel. “Our encryption testing is set to begin in a few weeks, once we’ve automated the operating process, and is expected to run continuously for at least a year.”
Credits: ESA; CC BY-SA 3.0 IGO
Car: BMW 316i Compact.
Date of first registration: 20th May 1999.
Registration region: Chelmsford.
Latest recorded mileage: 126,397 (MOT 10th June 2019).
Last V5 issued: 20th June 2020.
Date taken: 8th July 2020.
Album: Carspotting
Compact is a neat little studs up font. Basic, but gets the job done. Perfect for signing mosaics.
Try writing with the font or check the details on Swooshable.
RD18884. A train on the Wengenalpbahn (WAB), an 800mm gauge rack & pinion railway, arriving at Grindelwald.
On the right is a train on the metre gauge partial rack & pinion Berner Oberland Bahn (BOB) waiting to return back down to Interlaken Ost.
Thursday, 13th September, 2018. Copyright © Ron Fisher.
Could be a very cool Live/Work space… in Central Porto- just east of the Main Retail Shopping Street- kinda like how State Street in Chicago was during The Jane Byrne administration ( meaning mostly closed to Auto & Bus traffic)
This 1 3/8 inch figure is the DC Comics character The Flash as seen in the game HeroClix. The red and yellow streaks behind him are actually tissue paper.
I believe this is the first toy photo I've posted to Flickr that was lit by my camera's flash. I typically use lamps, flashlights, LEDs, etc.
This image is straight out of the camera: no tweaking, no color processing, no cropping, no nothing.
Submitted to the Flickr group 7 Days of Shooting.
I will be using this camera in week 325 of my 52 film cameras in 52 weeks project:
www.flickr.com/photos/tony_kemplen/collections/72157623113584240
The best words to describe HK's cityscape.
Recently fall in love with the skyscrapers and cityscape, I spent few weekends on wandering around Central to Wan Chai. Look up and look for sth fun!! :)
Here's a nice way to create a compact 2x2 brick with studs on both sides. Pointed out by the awesome o0ger - thanks man!
Parts, details and a short video: swooshable.com/snot/compact-inverted-bracket-brick