M45- The Pleiades Cluster

M45- The Pleiades Cluster

The Pleiades, also known as M45, the Seven Sisters or Subaru (Japan), is an open star cluster containing middle-aged stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky.

The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster is now known to be an unrelated dust cloud in the interstellar medium, through which the stars are currently passing. Computer simulations have shown that the Pleiades was probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

[Info from Wikipedia]

Nikon D5100
Explore Scientific ED80
Celestron AVX Mount
23 x 120 second exposures @ ISO 1600

Shot from the L&A Dark Sky Viewing Area in Erinsville, Ontario

Posted by Dark Arts Astrophotography on 2016-10-08 20:38:55

Tagged: , astrophotography , astronomy , space , Pleiades , Subaru , Cluster , m45 , Kingston , kingstonist , Ontario , Astrometrydotnet:id=nova1769464 , Astrometrydotnet:status=solved

Indoor Air Quality Testing Chino Hills

Indoor Air Quality Testing Chino Hills

Indoor Air Quality Testing Riverside CA

The 3 Key Issues You Ought to Check Indoor Air Quality

The majority of folk usually believe pollution as an outside worry, yet it could possibly be sometimes worse in the properties where we pass a lot of the time at home and where you work.

For anyone who is troubled over the environment within your property or workplace, just where just about all people pass much of their time – it is advisable to most definitely think about engaging a professional interior air-quality screening practitioner. Here is a deeper look at some of the most commonly encountered indoor air toxins and tips on how to uncover them.

1- Mold

Fungus is by far the most wide-spread indoors air polluter, specifically in warm, damp conditions much like crawl spaces, restrooms and leaking attics. Flare-ups all too often get started in all of these environments yet can easily then before long disperse into the rest of the structure in cases where there is a sufficient amount of damp air.

In the event that you expect any sort of fungus related infestation, itโ€™s seriously recommended you speak with a specialist interior air quality inspection company. They will have the capability to show you the severity and category of mold issues that you’re looking at. Itโ€™s enormously critical to connect with an independent interior air quality provider like โ€˜A-1 Certified Environmental Servicesโ€™. The rationale of this is that 3rd party air testing services will deliver you reliable air test outcomes that are certainly not motivated in in any manner by any potential remediation task which might be involved.

2 – Dust and Family pet Dander

Mold far from the sole biological polluter of inside air in any respect. A good number of buildings are contaminated with dust mites and pesky insects, that result in substances which might bring about hypersensitive response. In a similar manner, rodent urine and waste can cause similar respiratory ailments, as can pet dander. Additionally, your interior air quality could very well be influenced by pollen and harmful microorganisms coming from outside.

Although you can not observe dust mites by way of your own eyes, consistent and fastidious dusting can help to mitigate an allergy problem caused by dust mites and pet dander. Quite simply, good house cleaning and robust air-flow in the family home should help continue to keep these allergens from getting to increased concentrations.

3 – Volatile Organic Compounds (VOCs)

Sadly, VOCs happen to be in multiple general consumer products which can include paints, glues, varnishes, perfume, cleaning agents, lacquers, varnishes, hobby materials and desktop computer printing equipment. Concentrations of many of these kinds of VOCs are frequently noticeably higher inside – up to 5 to 10 times more than outdoor air according to the EPA.

Moreover Indoor Air Quality Evaluation and Mold Screening in Riverside, we additionally provide you with these offerings in the neighbouring counties, with the inclusion of Moreno Valley, San Bernardino, Rancho Cucamonga, Corona, Ontario, Pomona, Fontana, Temecula, Rialto and Chino Hills.

Posted by stingriversqaz on 2019-05-11 06:33:59

Tagged: , Indoor Air Quality Testing Riverside , Indoor Air Quality Testing Moreno Valley , Indoor Air Quality Testing San Bernardino , Indoor Air Quality Testing Rancho Cucamonga , Indoor Air Quality Testing Corona , Ontario , Indoor Air Quality Testing Pomona , Indoor Air Quality Testing Fontana , Indoor Air Quality Testing Temecula , Indoor Air Quality Testing Rialto , Indoor Air Quality Testing Chino Hills

Faux 4×5

Faux 4x5

Well, I think I have the technique down now. This is at least as good technically as any 4×5 I ever shot.

It’s an HDR composite of 63 exposures on the 5D, three rows of seven frames at -2, 0 and +2EV. Stitched in PTGui, tonemapped in CS3. The full resolution image is about 150 MP or so. I uploaded a fairly big version so that anyone who’s interested can check it out. View large or huge (>3000 pixels).

A few notes: making these images is fairly labour intensive. It’s certainly not an ‘easy alternative’ to 4×5. In fact, in terms of difficulty, it’s a wash. There are a billion things that can go wrong when you’re shooting 4×5 and the same is true here. You have to learn a ton of technical stuff to shoot and process 4×5 properly, and the same here.

If you want to shoot RAW, you’re using about a gigabyte of storage for every composite. That’s eight shots if you carry an 8 gig card into the field. Practically speaking, you don’t really lose any quality by shooting big jpegs because of the huge dynamic range BUT you lose the ability to forego HDR (if movement ruins the shot, say) and pull the RAWs from the 0EV exposure. You just have to pray your JPEGs are good enough.

A few more tech details. Camera shake is a potential problem. I am using a Nodal Ninja which is borderline for the 5D at low shutter speeds. Anything under 1/60 I stead it with my hand. Under 1/30 I use mirror lockup. I always use a cable release.

Another wrinkle is the speed of the camera when writing to the card. With jpegs, you’re usually okay. The camera dumps the images about as fast as you shoot them. But with RAWs there’s no way the camera can keep up. So you end up waiting with your finger on the cable release as the camera churns through the -2, 0, 2 EV brackets. It’s boring.

Batteries are something of an issue. I left the kit in my car one night and the next day went out to shoot in -10C weather. The camera wouldn’t even turn on. I guess I could have warmed up the batteries next to my body but instead I went home.

Finally, it’s not obvious, but I’m not framing these in any conventional sense. I’m just picking a spot, trying to figure out where the center of the picture is, and framing in my head. My standard 7 horizontal x 3 vertical shot matrix (15 degree increments horizontally, 20 vertically, with the camera vertical) is designed to capture as close as I can to a 90mm on 4×5’s field of view with a bit of wiggle room for slight reframing. I’ve thought about taking a 4×5 finder into the field. I will probably do that from now on.

Having said all that, there are some real advantages over 4×5. The kit is massively easier to carry around. You can postpone a lot of editorial judgements (BW or color? Filtration? Exposure?) until you are sitting at your computer. I don’t have to fight SCSI to get my 4×5 scanner going. I don’t have to do dust spotting. I don’t have to buy or process film.

And, maybe most important, I can shoot for different formats in the field. If it looks like a 4×5, I can shoot a 4×5. But if it looks square I can shoot it square. If it looks like a Noblex shot, I can shoot that. If it’s a 360, I can shoot that. For a camera whore like me that’s nice.

Posted by John Brownlow on 2008-04-07 13:40:45

Tagged: , indian , brook , thornbury , ontario , canada , tree , trees , forest , wood , woods , wild , tangle , bramble , blackandwhite , bw , monochrome , 400 , stitch , stitched , panorama , composite , ptgui , HDR , tonemapped , cs3 , pinkheadedbug , bestviewedlarge , viewbigplease

Still Life in Parisian Mood

Still Life in Parisian Mood

Received this marvelous card from Paris recently from my dear friend Pixxel Dust who moved there this year. Merci, ma cherie! ๐Ÿ™‚ The card is fitting perfectly into a little origami ornaments display I have right next to my computer ๐Ÿ™‚

So I’m in Parisian mood and I like it! ๐Ÿ™‚ Want a glimpse of Paris for yourself? Take a peek at her stream!

Posted by Katrin Ray on 2010-12-30 03:33:09

Tagged: , Still Life in Parisian Mood , Card from Paris , Thank you Pixxel Dust ๐Ÿ™‚ , Origami by Yuri and Katrin Shumakov , Origami Ornaments , Oriland , Oriland.com , Texture Magic , texture , Thank-you DogMa for texture , Toronto , Ontario , Canada , Katrin Ray



Posted by Vlad Lunin on 2011-09-09 03:43:01

Tagged: , flickr , Toronto , Ontario , Canada , computer , personal , PC , metal , lights , insidereflection , dust , power , blue , green , red , yellow , cables , windows , machine , cooler , vents , USB

iPhone Dust Bokeh

iPhone Dust Bokeh

I was sitting out in the bright sunlight at noon when I noticed I could barely see my computer’s screen because of the specks of dust that reflected the sun right off of them making them bright. I didn’t have my 60D with me and it wasn’t a fantastic shot so I decided to whip out my iPhone 5 and see if I could fool the autofocus into staying out of focus long enough for me to take a shot with a nice bokeh effect. A couple of shots later, I had what I was looking for. I brought the photo over to the Photoshop iPhone app (Photoshop Express) and made a few adjustments (primarily the colour) to make it what I wanted for a wallpaper on my phone aaaaand exported. And that’s the story of this shot! ๐Ÿ™‚

Posted by Zegorn on 2013-06-21 02:00:36

Tagged: , ground , back , paper , wall , wallpaper , background , 2013 , june , canada , ontario , london , photo , unplanned , light , day , daylight , bokeh , iphons 5 , 5 , iphone , dust , photoshop , express , mobile , app , application , iphone 5 , iphone app , photoshop express , mobile app , apple , apple iphone 5 , apple iphone , ios , ios 5 , ios 6 , ios 7

Male House Fly Resting On Snow 004 – Musca Domestica

Male House Fly Resting On Snow 004 - Musca Domestica

A male house fly resting on the snow in my backyard as in the previous three photos; used iPiccy to increase exposure with the Curves tool and the Clone tool to remove dust spots; had to use Ribbet to upload due to a pop-up asking for either browsing in another program or saving on my computer
Camera Used: Canon EOS Rebel T1i
Lens Used: Canon EF-S 60mm f/2.8 Macro USM prime lens

Posted by Chrisser on 2015-03-20 21:08:37

Tagged: , Insects , Insect , Flies , Fly , House Flies , House Fly , Musca Domestica , Nature , Ontario , Canada , Canon EOS Rebel T1i , Canon EF-S 60mm f/2.8 Macro USM Prime Lens

Female House Fly Resting On Snow 001 – Musca Domestica

Female House Fly Resting On Snow 001 - Musca Domestica

A female house fly resting on the snow in my backyard; used iPiccy to increase exposure with the Curves tool and the Clone tool to remove dust spots; had to use Ribbet to upload due to a pop-up asking for either browsing in another program or saving on my computer
Camera Used: Canon EOS Rebel T1i
Lens Used: Canon EF-S 60mm f/2.8 Macro USM prime lens

Posted by Chrisser on 2015-03-20 20:41:16

Tagged: , Insects , Insect , Flies , Fly , House Flies , House Fly , Musca Domestica , Nature , Ontario , Canada , Canon EOS Rebel T1i , Canon EF-S 60mm f/2.8 Macro USM Prime Lens

Morning Drive To Work

Morning Drive To Work

I have a beautiful drive into work each monday morning. Unfortunately it is a four hour drive to work, and I don’t return until friday, but a beautiful one at that. I used to shoot a lot at sunset or shortly thereafter. I still do, but driving through the country at 5 in the morning has made me realize that sunrise is much more breathtaking. I often see things that I’m sure I never will see again; however I rarely ever pull over to take a picture since I am in a rush.

This was shat at beleve it or not, ISO 100, and was properly exposed. The raw processor I have when I am away from home is not very good; however lightroom would never run on this old laptop. So all my raw photos have crazy grain. Oh well, I’ll process this one again when I am home; however I almost spend no time at the computer when I am.

Sorry I have not had many posts lately. Life has taken me down a hecktic road. I am working 2 jobs at the moment and trying to manage a business. Each day I work from 7:00 am until 12:30 am. My camera collects dust and I long for a day when I can pick it up.

View On Black

Posted by recyclethis on 2007-08-17 01:03:24

Tagged: , northern , ontario , field , mist , fog , pink , blue , purple , yellow , golden , landscape , trees , farm , sunrise