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Found 99 results

  1. codeman

    NGC6744 Galaxy in LRGB

    I loved processing this amazing galaxy photo. The photos taken during my Namibia travel this year. It was taken during 2 nights. Photo Details: Lum: 18x10Min=3Hours RGB: 8x3Min=24Min for each RGB channel Telescope: ASA 12'' Astrograph F3.6 Mount: ASA DDM85 Camera: FLI 8300 Mono My Flickr Page: https://www.flickr.com/photos/101543943@N04/ Thanks for watching, Haim Huli
  2. NGC281 - The Pac-Man by Chris Kennedy, on Flickr 35kph gusts of wind, and REALLY bad guiding due to a lack of drift align and the star being "blown away", but managed to get a little something out of 30x360s light frames, also a new target for me, one I want to come back to under better conditions and with other wavelengths of light to make a full colour image.
  3. Hi there! (Before reading, my English may not be the best, but I hope you'll understand what I mean and say) I'm currently looking for a telescope that will blow my mind (in a weird way). I've been a "fan" of the night sky since I was a little kid, now I'm 21 years old and I want to give the skies a try. So, the telescop I've been thinking about buying is the Sky-Watcher Explorer-150P(EQ3-2) F/750. To me it seems like a decent telescope for a beginner, but I have my questions to those who are experienced with telescopes and those of you who maybe own their own Sky Watcher Expl. 150P. Questions: 1. Is this a good beginners telescope? Please explain why it is, and why it might not be. 2. What will I be able to view with it? 3. Is this a telescope I can use to take pictures? If so, how can this be done? (Using a laptop or a digital camera?...or both?) 4. Is it difficult to take it with you and to operate it? 5. If you could please rate it from 1-5 (for beginners), where would you put it? Those are the questions I have right now, I might come back with more later. I'm hoping for friendly and informative replies that can help me decide. It's already pretty late here in Norway, so I'll be going to bed now, but I hope some of you can answer me within the next few days. Here's a link to a website I might be buying from: http://www.stjarnhusetonline.se/prod/telescopes/sky-watcher/newtonianreflectors/explorer150.html Have a great night. Much love from Norway.
  4. Hi everyone, i am looking to buy a budget level lens for Christmas to begin astrophotography. I am a beginner observer and am dying to get into imaging. Nothing major to start with, I'd be very happy to get decent images of Orion and andromeda. (My dslr is unmodified) If anyone had any examples of pictures they'd taken with these sort of lenses I'd appreciate it. ive seen some on here from budget lenses and am very impressed. Would love to get a few more samples though. Thanks very much
  5. Christopher Davenport

    Sub length vs Sub count?

    So been at the this imaging malarchy for a couple of months and sometimes things just don't seem rational. Why do I get better results from 30 x 300s subs than from 15 x 600s? I suspect that it is the signal to noise ratio of the longer exposures. i.e DSLR noise increase with exposure time. But maybe I am missing something?
  6. CKemu

    M57 - Ring Nebula

    First time viewing and photographing this object - think I've found a new favourite to observe! My day was filled with heavy rain and whilst the sky did mostly clear, lightning could be seen in the distance and a mist left me with extremely condensated equipment, to the point where my laptop hit a BSOD with the mouse no longer functioning - so crossing fingers that after 24 hours of drying, it will be fine! The next time I attempt this object, I feel a nice 2x barlow will be in order, or even perhaps a 3x.
  7. I hope its okay to post this link here, but its very interesting. Its about the Pillars of Creation and worth a read.
  8. 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.
  9. 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.
  10. 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/
  11. -ChoJin-

    my first DSO: NGC 5139

    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):
  12. Christopher Davenport

    M45 - First Attempt with 600D

    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.
  13. todd8137

    M3

    From the album: my things

    9.25sct,cgem mount ,30x100 with darks ect cannon 10 deep sky stacker,ps6 and astronomy tools plugin

    © no

  14. codeman

    Tor's Helmet NGC2359

    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
  15. 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!
  16. 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
  17. 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.
  18. jetstream

    A quick rip

    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!
  19. Hi everyone! I was lucky enough to get a clear night last night, and have the first chance to test out my new Explorer 200p. Some of you may remember me posting a topic about how people lift such heavy things, and I got a huge amount of replies. In the end, I decided to split the scope into four parts: 1. Tube 2. Counterweights - to lighten the load as I move the mount 3, Accessory tray - So I could fold the tripod legs in 4. Mount + Tripod In the end, it took me about 15-20 minutes to set everything up, then I had to wait about 20 minutes for the sky to darken. In that time, I looked for an iridium flare, which the iflares app predicted. In the end, it never happened (Though I saw one at Magnitude 0 later on). Because it was nowhere near dark, I just pointed the scope at Vega. After that, I took a look at Albireo, looking as colourful as ever. I then looked for the double-double, but I struggled to split it - possibly because of seeing. After that, it became sufficiently dark to start DSO hunting. My first target was the Ring Nebula. I'd seen it with my old 150, but it was quite hard to spot. With the 200p, it jumped out at me! I added more zoom, and the nebula filter, and the ring shape was clear as day! My next target was M13, an old favourite. It was easy to see, with a somewhat mottled surface at low zoom, but when I cranked up the power, the stars were easy to see - much more so than in my old 150. After that, I looked at the Andromeda galaxy. It was a lot lower down, in hazy sky, so it looked little more than a hazy blob. Hopefully, it should be better when it's better placed in the autumn. Finally, I found the dumbbell. It was easy to see at low power, without the filter, but when I zoomed in, and added in the filter, it showed some good detail. However, even with all this, the dumbbell shape was still quite subtle. Still, even in photos, it's not as contrasty as the Ring. After that, it was getting on for eleven, and if I was up any later, my parents would kill me (not literally of course), so I came in. It took me about half an hour to bring my scope back in, and in that time, I let a couple of large moths in. Overall, it was certainly a good first observing session with my new scope! Thanks everyone for the advice you've given me with carrying my scope, as well as other things! David
  20. Hi all! I was just wondering about something, and would much appreciate to hear some opinions /suggestions... Premise: I'm just starting, very green, and very curious... With my f5 Newton and DSLR I have been getting some very satisfying results so far, apart from the expected coma and tracking issues. I was wondering if it was at all possible to have more magnification with such a setup, to be able to catch also the smaller DSOs... I have been told that those smaller objects are difficult in that one needs longer focals, and thus longer exposures, and thus better guiding. So, just slapping on a barlow between the tube and the dslr would only frustrate things, apart from focussing issues... Can anyone confirm this? This is obviously a long term issue for me, as at the moment, I'm quite happy with the setup I have, and the lack of funds for now puts any ideas I might have on hold. But for the future it would be very interesting to know what options there are for really far DSOs... I would definitely first of all start with setting up auto guide (not just for far DSO), so guide scope, guide cam and PC + connections and software. That's a big bite. Afterwards it would probably be: buying a purpose scope for deep DSOs, long focal, big aperture. SC? RC? A good APO? Opins? thanks all! Gerhard.
  21. I was out earlier looking at the Pleiades and Orion (see separate post). I came in and waarmed up for about an hour. I went back out to view Sirius and the surrounding area. Sirius was fantastic. I wish I could see Sirius B (which I used to look at in my scopes). M41 was easy to see a few degrees almost directly below it. I found M35 very easily near one of the feet of the twins of Gemini. I saw a few other fainter open clusters while scanning the sky. I'm back inside, where I'll stay and will soon hit the sack.
  22. Hi everyone, I’m putting a shopping list together for an astrophotography setup and I could really do with a bit of advice on my options thus far. My aim is to photograph DSO’s (I’m really keen on imaging galaxies) I need a rig that is easy to set up and also portable as I plan to transport it to the darkest skies I have available to me. I’ve been shooting wide field astrophotography with a DSLR and a tripod for about 5 years now so I already own a modified Sony A7S and an unmodified Canon 5D Mk3, so I will start by shooting with these bodies. I'm still undecided on scope and mount, hence the list has options. My list so far: Telescope: Orion ED80 WIlliam Optics GT81 Explore Scientific 80 Essentials Mount: EQ6 HEQ5 Finder Scope and CCD for Guiding: Orion Mini 50mm Guidescope Meade DSI Colour I intend on using PHD for guiding. I also need other accessories such as field flatteners etc, so any advice on 'the extras' would also be greatly appreciated. I don't expect to get hubble-esque images from this rig! I would like to go down the refractor route, but other than M31 which is, of course, rather large, are these telescopes going to be any good for galaxies? It is one of the reasons I am leaning towards the Orion ED80 as the scope for that extra 120mm of focal length as all the scopes listed are f/6. I'm also leaning towards the EQ6 for the mount but any other suggestions are more than welcome. Thanks is advance!
  23. Last night, after a hot muggy day, a cold front passed through and produced a good, clear sky and the weather was cool and dry. Took out my bins and my zero gravity chair and started viewing the small sliver of sky to my north and south. I ended up seeing the triangle of Mars, Saturn and Antares. Obviously, I can only see them separately in the bins. I also saw at least 5 globular clusters (after I moved my session to my deck), so I could see a little more to my east. The globulars included M4 (near Antares), M13 and M92 in Hercules and 2 others. I was only out about 45 minutes, but it was a very satisfying session.
  24. I've recently started DSO imaging: Canon EOS 550D (modded), Celestron 9.25 SCT, AVX mount. I use BYE, save RAW + JPEG to laptop, then process in DSS. When I go into Register checked images: advanced: compute number of detected stars; I get a decent number (approx 250) if I am registering JPEG images at 2%, but very few, often zero, with RAW images of the same object, no matter where I put the slider. Am I getting the settings wrong, or is there another answer. Thank you.
  25. I was out for about 2 hours. I enjoyed looking along the Milky Way. I also saw M31 and barely saw M33. A little later, I saw some nebulosity west (by maybe 10 deg) of Cassiopeia. I'm not sure what I saw. Then I saw the Perseus Double Cluster, which usually looks fantastic at about 45x in a scope. It looked pretty good in the bins. Then I looked at the Pleiades. That was fantastic. I've never seen it in the 15 x 70 bins. Looked like diamonds on black velvet. The stars in Perseus the point towards Cassiopeia were also fantastic. I saw a few open clusters in Cassiopeia.
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