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Showing results for tags 'stars'.
Found 25 results
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I often love to play youtube lectures in the background as i work on my home improvement projects, only problem with that is many times my attention gets so focussed on the computer screen that i fail to see paint dripping from my brush onto the carpet, that did happen!. Anyway, here's a great lecture from the Perimeter Institute for Theoretical Physics which is just a couple hours drive from my home about the weirdest stars known, some fascinating facts here with a dose of humour.
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Here's my quicky at M82 SN2014J, two nights ago and the only clear night for ages but quite gusty so the 200p what an excellent sail. 16 x 180s Lights10 x 180s Darks800iso200p HEQ5 Guided in phdProcessed in Nebulosity & CS6
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I recently got hands on my first equatorial mount, a Celestron Advanced VX mount.. And the curse holds true, that after purchasing new gear, you are to bear the burden of weeks of bad weather! So whenever there has been minor holes in the clouds, I've been out practicing star alignment, polar alignment, and just the general behavior of the mount, pointing at any star that would glance through the thin cloud cover. Hope to soon be able to practice drift alignment. A patch of "clear sky" showed itself a few nights ago, so I thought I would try and see how far I could push the unguided exposures (having only done the ASPA). And even though thin clouds would regularly pass over the target, I am at least pleased that I could squeeze this out of the image. +- 1 minute exposures of the center of the noble M45, Pleiades. 5-6 shots later, the clouds came rolling in again... So here I am stuck looking at my mount collecting dust and browsing these forums again Looks like there is some coma that needs fixing too. Scope is the Celestron 130 SLT OTA. Using a barlow right now to achieve focus. Trying to obtain the screws needed to move the mirror. As a bonus, I noticed the presence of a magnitude 17.2 in this one, faintest I've caught yet I think.
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Here is the North American Nebula in the Hubble pallet and HA. I'm still a relative novice to the Hubble pallet adjustment and didn't want to overcook it? Most probably it can be pushed a little further? The image was capture using the trusty ST10 and the BabyQ FSQ85 over the course of this month. I have been battling with the weather to complete this before my holidays start tomorrow!!! 12x 800sec HA 17x 600sec OIII (2x2binned) 15x 600sec SII (2x2binned) I binned the OIII and SII since these are very weak in the nebula and don't contribute much in the way of detail. The HA data has been used as the GREEN channel and also a Luminance channel for the final image. The HA data is a little wider since I have had some small alignment issues between sessions, still setting up and tearing down my kit each night / session This is the alternative colour schema, I suppose that there is no wrong or right colour schema its just down to your personal preference? Which one do you like?
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Hi, does anybody know if stars differ in color when viewed through different sets of binoculars (ex. 7x35, 10x50, 11x80, 20x80)?
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From the album: The next step.
One of my first targets but still trying to get a decent image - clusters are harder than they look to capture due to them being all stars so tracking errors and uncorrected optical problems are very quick to show up in the end result.© Aenima
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astrophotography Moved House just finding my bearings.
Staffs Oatcake posted a topic in Getting Started General Help and Advice
I've been absent for the forums for a while as I packed up my telescope with an impending house move. Which has now taken place and the telescope will be retrieved from safe storage. However a few nights ago I sat out in my new garden looking at the night sky. I grabbed my trusty Canon 40d and set up my tripod. Attached are some of the images taken. -
From the album: CCD venture
A h-alpha shot of the Wizard nebula in Cepheus. ED80 - ATK16HR - Ha clip filter - EQ6 - finderguider 9x50mm PhD2 - photoshop - DSS. -
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Hi all, Sorry if this has been asked before but every time i do research in to this i get different answers from different sauces. Not sure if im looking at out dated information or not so im hoping if i ask my questions here i can get the most up to date answer. So my questions are; 1. How many Stars are their in our Galaxy? 2. How many Galaxies are their in our Local Group? 3. How many Galaxy Clusters are their in our Local Supercluster? 4. How many Superclusters have we found so far? 5. How many starts in total are their in all of the Superclusters?
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Hi All Took this beautiful nebula also knows as Tor's Helmet during my visit to Namibia this year. Finally got a few nights to process the raw images to the photo you see here. Photo Details: Ha: 1.4 Hours OIII: 35 Min SII: 25 Min RGB: 15Min each. Telescope: ASA 12'' Astrograph F3.6 Mount: ASA DDM85 Camera: FLI8300 Mono Thanks for watching, Haim Huli
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Globular clusters, whenever I point my scope towards 95% of them they come out as a hazy patch. The only two globulars I can see kind of clearly are the Hercules cluster and Messier 3 in Canes Venetici. All the rest look fuzzy, What aperture would you need to see them clearly? I have a 4.5" reflector. Thanks Adam
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From the album: Slynxx Learning Curve
Double Cluster in Perseus- 1 comment
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finally sorted out the videos on my desktop machine so I could get the colour balance right Starry skies - 1000 x 5 second exposures over 90 minutes and 2480 raw exposures make up this Cloud timelapse over 8 hours as always best viewed on Youtube in full screen
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Here's an image that i just finished processing after finding the lights that were taken months ago on a memory stick that i was emptying and had forgotten about, only had the lights so took some darks this morning by using the chip temp shown in images taken via Backyard Eos. I reckon there's 19˚c between ambient and full speed on my 550d so put it in the workshop with the heating off and seemed to match them well. Needs some more data and my processing is all that but I'm quite happy with it for a surprise find. This image was taken with a Skywatcher 200p, Heq5 Guided via PHD Canon 55D unmodded, Backyard Eos 24 x 180s Lights @ 1600iso 19 x 180s Darks only (taken months later by matching chip temp) Processed in Nebulosity, CS6
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From the album: My (very amateurish) attempts at astrophotography!
Milky way over the hills at Loch Earn. Even caught some faint aurora over the hill! (my intended target for the night!) -
I’ve been looking up st the Stars with Telescopes I’d put together from various other scopes, but late last year I decided to get more involved with it. I’ve purchased at least 15 books on Astronomy. I’m starting to piece together how the start Charts and Math and which tools are best used on the subject of Astronomy and so far self taught. I don’t know anyone else that’s doing it. I stumbled into this site looking for something totally unrelated and just see what’s here. I’m primarily interested in just about everything on the subject. Maybe I should have did this early. Hello everyone.
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http://astrob.in/69796/0/ Location: Valea Izvorului, MehedintiDate: 29.10.2013, 07.11.2013Object: ngc2239Lights: 7x600 + 24x480= 4,36hMount: Losmandy G11Scope: Refractor APO William Optics Megrez 90mm f/6.2 | TeleVue reducer/corrector TRF-2008Camera: JTW Ultimate 600Dac, Dt=-30grade, temp controlled +/- 2gradeGuiding: StarlightXpress LodestarFiler: Hutech 2" LPS-v4Software: Pixinsight 1.8, BackyardEOS, Stellarium, PHD guiding, DSS Live, MaximDL, PhotoshopObservations: very nasty halos around stars, I didn't learn any ellegant method to get rid of them, if any of U got some sugesstions there are wellcome
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From the album: Slynxx Learning Curve
45 x 180sec Light Frames (2hrs + total exposure)10 x 180sec Dark Frames (Lazy me) ISO 1600 75-300mm Canon EF Telephoto Lens. Deep Sky Stacker Photoshop -
stars Jupiter Sky & Star Shots
mark117h posted a topic in Imaging - Widefield, Special Events and Comets
Hi guys/everyone. Well viewing has not been great over my area lately so i took to my camera to see if i could get some shots in of Jupiter with the stars around it, i shot these images with my NIKON D5300 and the standard kit lens of 18-55mm 3.5-5.6 DX, i was getting bored and have been wanting to try and do the milky way shots that you see everyday and look truly great, although i was not aiming for the milky way, what i was trying to use as my center point was Jupiter, i was quite amazed at how many stars i was picking up considering the great street light of heavensvile lol slap bang outside my window, anyway my shots are below if anybody is interested in taking a look and offering some advice. Also forgot to mention that some of the shots was taken with my Tamron 70-200mm lens, but most was shot with the 55mm kit lens i got with the camera. Cheers Mark. -
I noticed that my stars are a tiny, barely perceptibly, bit egg-shaped yesterday. For a change, instead of crying into my pint-glass, I decided to investigate: There's a script in PI called FWHMEccentricity. I used that on a couple of my subs and found that I have a median eccentricity of about 0.49. Not knowing if this was particularly bad, I went off and analysed some professional images of of the internet (and some from the posters on SGL, who will remain anonymous). Would you believe it, many of the images were coming out at about 0.4 - 0.45. So I conclude guess that 0.45 must be about the threshold where the human eye/brain can distinguish between a circle and an ellipse. How round are your stars? does it bother you if they are "not quite there"? Can you tell that I am bored with the cloudy skies?
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This is KIC 8462852, the star which some academics are speculating may possibly have 'alien megastructures' orbiting it creating a media stir. Other large telescopes are now pointed at the star and SETI is on the case with radio telescopes. I still think we'll find out it's some natural phenomenon but whatever is discovered will be exciting. 10 x 2 minute exposures at 800 ISO11 x dark frames11 x flat frames24 x bias/offset frames (subtracted from flat frames only)Guided with PHDProcessed in Nebulosity and Photoshop
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Wide-Angle Shot of Western Sky (16th April 2017)
Atlantean98 posted a gallery image in Member's Album
From the album: Wide-Angle Shots
Obviously it isn't the best of pictures due to the fact i live in North-West London, and I have a Fujifilm FinePix S9500, but i go to my local Nature reserve which borders the outside of London with Hertfordshire to take amazing pictures like this one! The Wide-Angle Shot is at f/2.8 and the exposure time of 20 seconds, the ISO Speed is ISO 400 and the focal length of 6mm. It was taken toward the western sky at approximately 20:00-22:00, on the 16th April 2017. -
My Orion XT8 Telescope just before going out on a cold evening!
Dan Watts posted a gallery image in Member's Album
From the album: Scope & Equipment
In my search for Comets at the moment, I had a night outside on a clear evening last week. I cannot wait until Comet ISON makes it's way round.
