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Showing results for tags 'light pollution'.
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Hi everyone. Looks like I will get some favourable weather in the coming days, but the moon is out and full. I finally have a car so I can get away from light polluted Weymouth, and tonight I took a drive and found a great spot to shoot (see image). So to the point, I want to shoot Andromeda during these moonlit nights since the moon will be directly behind me. How much will it still affect my images? I'm still a beginner, using a Nikon Z50 and the 50-250mm kit lens @250 (F6.3), but I do have a Star Adventurer now, so I'll go out and shoot if nothing for the practice (my polar alignme
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I'm not experienced with LRGB imaging, so thought i'd give it a go on M81. However, when i combine the 4 individually processed integrations i end up with horrible colour hues across the image - they're all aligned and wotnot. Am i running into the issues of light pollution (inside the M25), which i can only remove with aggressive DBE application? Individual files attached.
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Chatting on here about possible darker sites near me and came across the CPRE light pollution survey which you can contribute to this week. I’m going to rope the kids in & thought I’d share the link: https://www.cpre.org.uk/what-we-care-about/nature-and-landscapes/dark-skies/star-count-2021/- 17 replies
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The view from my centre of town garden is both physically & light-pollution restricted. Anything below 25 degrees is out of the question, anything West below 60 degrees behind bright buildings and a huge South-Easterly sycamore tree combines with a neighbour’s security & outdoor fairy-light obsession to make a fairly narrow observing window to say the least. The local park about 5 mins away potentially offers a darker & wider alternative which I confirmed this week on a late night dog comfort-break excursion. All of a sudden, from a spot around the 22 on the rugby pitch, a br
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I read a comment made on here the other day about the maximum magnification you can realistically use in UK skies (250x apparently). Therefore I was wondering what everyone else thinks this is, especially for you guys with 16" plus, apertures. I'm still fairly new to this game (only being observing for about 7 months), and only have a 5" Newt at the moment (but am about to replace with a 10" Dob) so I don't get any higher than 159x (6.3 mm).- 40 replies
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Hello, I'm selling these 2 filters since I'm getting a mono astro cam. The filters are barely used and in perfect condition, no scratches, no fingerprints, not even dust. They are both amazing filters, probably the best investment I've made. I've attached some images taken with these filters, using a 100$ celestron newtonian, a 250$ Canon 500D and the infamous AVX. Also attached are images of the filters showing their perfect condition. Astronomik CLS-CCD Canon Clip in Filter: https://www.astronomik.com/en/filter-gegen-lichtverschmtzung-filters-against-lightpollution-lpr/cls-ccd -
From the album: Astronomical Equipment
To combat light pollution I have a telescope blind. To sensitize my left eye, I wear an eyepatch. It stays in the dark all night long unless it is looking through the eyepiece. -
Last year I was given a Unihedron SQM-L, the narrow field of view version of their gadget for measuring night-sky brightness. Since then, I’ve nipped outside to take zenith readings whenever I’ve been able, often a few times per night. As a result I now have 85 data-points, all from my back garden in Sunbury on Thames which rates a 19.04 on www.lightpollutionmap.info . As it turns out, this agrees well with the data I’ve collected. The darkest I’ve measured at this location has been 19.13, with 4 records better than 19.05 and 10 better than 19.00. Plotted against Moon altitude, it looks
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The Campaign To Protect Rural England are running another star survey to monitor the spread of Light Pollution- details here: https://www.cpre.org.uk/what-we-do/countryside/dark-skies/star-count-2019?utm_medium=email&utm_source=engagingnetworks&utm_campaign=campaigns-update-2019-jan&utm_content=Campaigns+Update+2019+Jan TAKE PART: 2 February - 23 February Help us reclaim our dark skies Dark, starry skies are one of the most magical sights the countryside can offer. But light pollution means many of us can’t see the stars. We want to reconnect people w
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HI All, I have an entertaining video to share with you which is perfect for those just starting out and wanting to taste a bit of astrophotography without spending a lot of money. I image from London and managed to get a pretty good shot of Orion for just £150. This video runs through where I bought the equipment, why I bought it and how I used it to capture a Orion and some of the trials and tribulations I had to deal with on the way. Any questions please ask! Enjoy! FYI I shot this last year but with Orion now beginning to rise over the rooftops of London I thought this- 6 replies
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I gave a demonstration/workshop at my local Astro Group* about a simple way of removing light pollution from an Astro Photo. The description I gave was deliberately for beginners, using a wide angle tripod shot photo and using one of the easiest packages to get to grips with (Paint.net). The attached pdf covers the basic technique. I'd appreciate any feedback on it. * The Mid Cheshire Astronomical Group - all welcome, we meet on the last Friday of the Month. LP MCAG.pdf
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Congratulations to Welsh photographer Alyn Wallace for getting National Geographic Photo Of The Day for these pictures of the Elan Valley night sky. https://www.nationalgeographic.co.uk/photography/amazing-images-wales-starlight?fbclid=IwAR0hz92NXMnCh-ZaMw_MyFNkjKhRHYXIZLcygZGkTV_lHpNjjtvHWtNDXZg
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In the battle against light pollution it seems moths may be our new best friend. This article is about the effects of light pollution on moths and the reduction in pollination that results. https://a.msn.com/r/2/BBSwdmN?m=en-gb&referrerID=InAppShare
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How good are revolvable polarising filters for reducing light pollution and moonlight from most affected areas of sky? Also for seeing bright objects and reducing brightness that covers near neighbouring objects?
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Im fed up with the frustration of trying to enjoy astronomy from my back garden. Before I begin I know that I am being unreasonable in expecting all of my neighbours and the population of Warrington specifically and Greater Manchester in general to consider me when they are turning outside lights on, but there isnt an intent ,interest , policy ,or a direction to reduce light pollution by governments, or in the wider population, outside of small groups of enthusiasts like you lot. Indeed they want more light because they are scared to death of violent crime. The purchase of a 200p Dobsonia
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Thought i'd share somethingpositive Last week, i saw new LED lighting being fitted in our town. I was mad about it, thinking "oh no-now those #'+*! are making the light pollution even worse with that!" But- although they don't look like it, the new lights are keeping the photons much more on the street, where they belong. And i have at least a dozen of them within 100 yards. So, not everything keeps getting worse! What are Your experience with new vs old street lighting? Best, Ulrich
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https://www.bbc.co.uk/news/uk-england-dorset-45180494
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Last night was the first night with a long moonless spell. Unfortunately it was also horribly murky. Those who have the luxury of being able to apply a counsel of perfection would immediately reject it out of hand. However, we're not so lucky, clear moonless nights are few and far between, so have to be taken anyway, even when only the bare skeleton of Cygnus is visible, and the milky way no more than a distant rumor. Herewith 2 hours of H-alpha in 10 min subs, Photoline 130mm f/7 Triplet / 0.75x APM reducer, 3nm Astrodon, Trius 694. ASA DDM60 mount / Maxim DL with 5 pixel dithering
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I was wondering if any of you good folks might be kind enough to physically show me, and others, some examples of unprocessed LIGHT images from a DSLR (taken under medium light pollution), that can provide me with a point of visual reference? I'm looking for an approximate indication of the kind of 'look' I should be aiming to get on my DSLR screen at the end of a shot; Essentially trying to figure out where the threshold lies between a good, usable LIGHT image, and one that is over-exposed and has too much light pollution noise to be useful. At this stage in my learning, trying to read- 19 replies
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So I am not quite total beginner to astro images, but I am not hurrying to get to telescope range due to various factors and I did not find similar topic on several first pages of search, so this topic might be best suitable here. I have a camera that has a possibility to track astro-images up to 5 minutes, which is enough for me to take the Milky Way shots and even some Nebulae, clusters and similar level images. I have moved to the location that is a more light polluted than the one I lived before (from http://darksitefinder.com/maps/world.html : I lived close to the edge of yellow and -
Hello, I am a fourth-year Interior Design Student. For my Final Major Project I am hoping to design an observatory and lecture space designed to encourage more people to engage with stargazing. I am currently researching the best location for this type of building. Naturally the darker the site the better it is for observing but I would like to know if there is a limit or maximum recommended level to the lighting radiance level or lux level of the surrounding area. Attached is a photo of a lighting radiance key that may help to determine the answer to my question as it breaks the ra -
Hello, Just came across this new world map of the state of our dark skies, no good news I'm afraid. http://advances.sciencemag.org/content/advances/2/6/e1600377.full.pdf -
A new study has been released looking at the spread of Light Pollution. http://advances.sciencemag.org/content/2/6/e1600377.full One of their conclusions is that most of the UK is in the zone with furthest distance to travel to reach a pristine sky. So according to the map above my skies in Mid Wales are in the Green Zone and are thus "degraded to the Zenith". I'll just check outside.... (Spring Milky Way- May 2016 EDIT SQM reading 21.8 this night) -
A thought provoking video by Donald Jenson showing the effect of Light Pollution in N.West USA
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Well, this is my first ever "proper" LRGB effort using my Star 71, from a rather light polluted garden in Portchester, Hants. Getting on for 10 hrs in total exposure time. Processed in PI (thanks Kayron) and PS (thanks Olly), but I still haven't worked out how to tease the colours out properly (Olly, I can't find your method on here - I must be searching with the wrong terms..) 51*180s luminance, 49*180s red, 45*180s green, 49*180s blue I'm actually very happy how it's come out, despite the various technical challenges along the way! PS - anyone on here able/
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