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Found 104 results

  1. I'm working on a school capstone project and decided I would try branching into astrophotography as observational astronomy has always interested me, but not so much astrophotography. Since I'm mostly concerned with observational astronomy, I just have an 8" alt-az manuel dobsonian, and I got an orion starshoot 2 camera just to try things out and see what I could image. I was wondering if it would be possible to get any detail out of a DSO if I were to take exposures in increments and move my telescope to center the object between exposures. Any otherimaging methods or object suggestions that I could image for my school project would be greatly appreciated. Thanks!
  2. Getting firewood before bed is a bit of a ritual here and as the process began the sky was pretty freakin nice looking! Down with the wood out comes the scope. The 15" stays together and cooled so set up time including collimation is under 5 minutes. Tonight I just took a quick rip though the sky knocking off the Little Veil, a gorgeous Crescent, twisted filamented Pickerings Wisp and company and the Pacman for warm ups. Sliding up to NGC 7331 put me right in the spot to catch the 3 members of Stephans Quintet. Upping the mag revealed the other 2 faint members (orthos). M33's spirals were nicely presented as were the dust lanes of M31. Of course the NAN was observed, with billowing structure revealed in the 15". Back over to Cass and sliding to the Scorpion revealed the Lobster Claws and much more. Auriga was starting to emerge from behind the Pines so the dob was wheeled over to a clearing where it was unobscured. First time in what seems ages the Flaming Star was observed, man I like this one! I closed the session with Carolines Rose, an absolute favorite, all in all not bad for an hours observing tonight!
  3. 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
  4. I have a Canon 5D Mark III with a 400mm lens and wanted to see if I captured a photo of the Andromeda Galaxy if I could print it as a 24"x18" print @ 200 PPI (pixels per inch). Since Andromeda is about 3.17 degrees x 1.03 degrees that translates into 11,412 ArcSeconds x 3,708 ArcSeconds. The Canon full frame sensor is 5784 x 3861 pixels with each pixel being 6.25 uM in size. For best-case atmospheric seeing of 2 ArcSeconds and a 2:1 Nyquist sampling, I think we want 1 ArcSecond of sky to map to one pixel of size 6.25 uM. Using the Image scale equation of Image Scale = (206.265 X pixel size)/ focal length I get Image Size = (206.265 x 6.25)/400 = 3.2 Arc Seconds per pixel. 11,412: (11,414 Arc Seconds) x (pixels/3.2 Arc Seconds) x (1 inch/200 pixels) = 17" (so the wide part of the Andromeda galaxy would print at 200 PPI for 17" 3,708: (3,708 Arc Seconds) x (pixels/3.2 Arc Seconds) x ( 1 inch/200 pixels) = 5.8" (so the narrow part of the Andromeda galaxy would print at 200 PPI for 5.8" Can anyone confirm that these calculations are correct or give some suggestions on how to correct? Thanks, Lloyd Linnell
  5. Hello, Here is a link to a video I made with most of the photo I took in the past 3 years since I started doing Astrophotography. Hope you like it and thanks for watching. Haim P.S: You can also see my photos in my Flickr site: https://www.flickr.com/photos/101543943@N04/
  6. It was another clear night so I went out after 11pm for a fairly quick observing session with my 15x70 bins. Scanning the northern skies I found a faint smudge (which was actually M81). It was sort of between Polaris and the nearest pointer star of the Big Dipper. In the southern part of my sky, I saw the icing on the cake, Jupiter. I could see a pretty good, very bright disc and 2 of its moons. This was a good, quick session.
  7. Hello, this is my first DSO, taken while on vacations at the Réunion french Island. Unfortunately I screwed up the ICC profile while exporting to flickr, so the core has a little less details than what I have in PixInsight. I'll be more careful next time. - Taken with a Takahashi Epsilon 210mm/628mm on an Astrophysics 900 and a Canon 6D (unmodified) - Total integration time 10min: 10x60s lights RGB @ ISO 800, 10x60s darks, 11 flats, 10 bias - Processed with PixInsight you can see the full frame here (where you have a few faint galaxy, such as NGC 5064, top right, but there are a few others):
  8. Hello, I have taken my first steps into DSO Astrophotography last night. It was a bit frustrating as my Polar alignment can really do with some work. I tried to drift align, but I think I just made it worst Anyway I had to reduce my exposures to 120S from 300S and then it seemed stable enough. I captured 8xLights and 4xDarks @ ISO800, 120S, F4.75 (i.e 378mm with my 80ED, used a reducer / flattener) I have still had to crop the image down to size a bit as the corners are a little dark / odd. Stacked in Deepskystacker and then edited in Image analyser - I think I have over processed abit I really want to extract more of the nebulosity, but not sure how to. Anyway enough faff heres the image (Png has been reduced to 3rd of Size) I have two ISO1600, but they are quite washed out, not sure how to use these. 4 of the 8 iso800 lights are best contrast, so might restack with just these. Anybody have any idea on how to use the star mask in DSS? Any comments / suggestions welcome.
  9. Messier 51 - The Whirlpool Galaxy by Chris Kennedy, on Flickr Happy to get this one in, as it's now snowing here in Mansfield, England! Friday night/Saturday morning was the first clear night I've seen in over a month, and thankfully the 11mph wind was coming in from the North, so the gear was sheltered. My garden is less garden and more swamp currently, indeed expecting Yoda to come out of a hole and point out the first temple of the Jedi. So I pre-sank the tripod a few inches in to the ground and then leveled it - was a pain to pull it from the frosty hard ground the next morning! I originally got my ATIK414ex for narrow band imaging, as light pollution in suburban Mansfield is awful and rather limiting, but I can't resist some of the more iconic galaxies! Even if processing can be tricky! As there's a Moon rising - will probably spend my next session going over M51 in H-alpha, really to bring out the star forming regions, perhaps also a few really long exposures to add background stars. Imaging Details: RGB Sets: R x 30 | G x 30 | B x 30 - 6 hours initially, but re-shot 15 of the R set as M51 was higher in the sky, so sky background levels where better. Optics: Meade LX90 8" SCT, f6.3 Focal Reducer, Baader RGB filters. Camera: ATIK 414ex, -17c, bin 2x2, 240s Guiding: ASI120mm, ATIK OAG, error 0.7 - 0.9", PHD (Also used for drift align) Datasets: R 30x, G 30x, B 30x, Per channel flats Processing: DSS, Photoshop Conditions: Ground saturated, pre-sunk tripod, 1c/-1c, Wind 11mph (sheltered), occasional cloud cover (10%), Suburban light pollution.
  10. It rained yesterday, but it was mostly clear after midnight. I just used my binos after 12:30 and saw the Pleiades, all of Orion including M42, Auriga and some open clusters just to the south and east of it. Today was the first day I could see Orion, because I set up in my backyard and my row of townhomes blocks a lot the sky from northeast to southeast. M42 looked great in my 15 x 70 binos, although not as good as in my telescopes. I can make out the nebulosity very easily and could see 3 fairly bright stars in the nebula.
  11. I hope its okay to post this link here, but its very interesting. Its about the Pillars of Creation and worth a read.
  12. From the album: Nebulae

    © Graeme Healey Photography

  13. Maxrayne


    From the album: Clusters

    © Graeme Healey Photography

  14. Maxrayne


    From the album: Clusters

    © Graeme Healey Photography

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