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Found 58 results

  1. Happy new year folks! Long time since my last post. Lately I've been shooting some widefield. Here's my latest shots. Milky way mostly.. Venus sets. Sony A7s + Samyang 14mm ISO 10000 15 secs @f2.8 Old pilot station (is that correct english btw?) Samsung NX1 + Samyang 12mm ISO 320 10minutes (iOptron skytracker) Have a good one! -Thomas
  2. Finally managed to have a proper go at Orion Widefield last weekend. 45x240s (3hours) with Canon 6D and 50mm f2.8 at ISO800. No darks/bias/flats. Stacked in DSS and processed in PS. I am pretty happy with the result but now it got me thinking, how do I go from this to this: https://en.wikipedia.org/wiki/Orion_Molecular_Cloud_Complex#/media/File:Orion_Head_to_Toe.jpg Is it a matter of longer acquisition, or is that CCD territory?
  3. Hi all, before going comet hunting tonight I went and found a nice vantage point to observe tonights conjunction of Venus and Mercury. I believe I read they were around 1degree separated. They look great hanging low in the dusk sky and Mars was also visible higher up and more southerly. I took quite a few images but this 4sec ISO100 shot was my favourite. IMG_5654.cr2.tif https://www.flickr.com/photos/116958085@N07/16246201211/
  4. I'm still undecided which mod to go for. I will only be using the camera with camera lenses and will not be using it for normal as I have another camera for this. Is it worth getting a full spectrum mod if I only intend to do widefield?
  5. hi all, thought I'd share a wide field of mine captured on Saturday night (13 Oct) It's another Cassiopeia widefield - is it me or are there loads of us imaging this constellation recently? Shot with my Sony Alpha 200, Sigma 28-70mm F2.8 lens @ 50mm wide open, ISO 800. IIRC it's total of 65 x 20 second lights, 60x 20sec darks and 20x 1/4000sec bias all stacked with DSS and post-processed in PhotoShop CS4. Solved by Astrometry with the following details: (RA, Dec) center:(19.3779150171, 61.1835725999) degrees (RA, Dec) center (H:M:S, D:M:S):(01:17:30.700, +61:11:0.861) Orientation:158.33 deg E of N Pixel scale:44.52 arcsec/pixel Parity:Reverse ("Left-handed") Field size :25.33 x 16.30 degrees Your field contains: The star Caph (bCas) The star Schedar (aCas) The star γCas The star Ruchbah (δCas) The star Navi (εCas) The star ηCas The star ζCas The star ηPer The star κCas The star θCas NGC 129 NGC 281 NGC 869 / Double cluster NGC 884 / Double cluster NGC 896 IC 1795 IC 1805 NGC 1027 IC 1848 Here's the annotated version: and the un-annotated version for the purists: If you think there's more data to pull out, or would like to have a go, I have the raw TIFF file saved from DSS uploaded to my DropBox and can post a link if you want to have a go with it.
  6. Hey all. My interest in timelapse has been building over the last couple of years. After an attempt to do some at SLG 11, this has been something that has been bubbling on the back burner for a long time. My interest has once again risen in getting this going as I now have what I think will be a fairly nice setup for doing Day to night (Holy Grail) time lapses. Here's the kit that I'll be using..... 1. Canon 70D 2. Sigma 17-50mm Zoom lens at F2.8 (Over the whole range) 3. 2 axis camera slider 4. iPhone/iPad - running qDslrDashBoard 5. Lens muff - and single use hand warmers This setup fits together rather nicely. The slider that I have does Move-Shoot-Move, after moving it will trigger the camera via the shutter release cable. (I could use an intervalometer for this, the slider has the feature built in so no need to complicate things even more.) The Canon 70D will be mounted on the slider on a ball mount. It connected to the iPhone/iPad over WIFI (I thought that was a gimick at first). the iOS device will be running qDslrDashboard which will perform the settings tweaking for the Holy grail stuff. The Sigma Lens at F2.8 will be faster than my kit lens (F4.5) The Lens muff, will be wrapped around the sigma lens and have 3 single use hand warmers (lasts 10 hours) to keep dew away from the glass. All in all, I'm getting rather excited to trying this out
  7. Hi everyone, It's been years since I posted anything on this forum! It's also been years since I've had a proper observing session as I've had uni, work and other things to think about. Also now that I live in London it's unlikely I can do any proper observing! Anyway I've been missing it lately, and thought I'd pay a visit to this forum again, starting with a simple little Milky Way image I took on holiday last year: Here's hoping that in a year or two I'll be able to think about setting myself up with a telescope in a nice dark place again
  8. Hello! im new to this forum, apologies in advance if the threads in the wrong area. recently, i took 33 images of the milky way, untracked, just simple images and stacked them in Adobe photoshop using a median filter (oly ep3). however, in my final image i get a lot of vertical banding, like purple streaks running down the image. Ive tried using DSS but with the same result. does anyone know what i should do? this is my first try at astro stuff so i have no clue. Should i try doing background calibration in PixinSight? I've uploaded a compressed image for you to see. im not expectingg a perfect image, but hope to at least recover it. im relying on you guys!! p.s. i realise that the streaks appear in the single frames as well, so obviously it was my fault in the first place
  9. Finally got some fairly clear skies last weekend (2015-01-17), although it was a bit hazy, so I thought I'd try to image comet C/2014 Q2 Lovejoy. Set up my Sony A77 with a Tamron 90mm macro lens and iOptron Skytracker V2 on a sturdy tripod. Spent quite some time to try to get polar alignement and focus as good as possible and then get comet Lovejoy and the Pleiades in frame. Got 46 images (45 sec exposures) of which, perhaps half of them were somewhat usable. My astro image processing skills leaves a lot to be desired. I stuggle to get my head around DSS and then how to fix the problem with light pollution in my images and get as much detail as possible from the data I've collected. The result is not great, but it's a start and I've got lots and lots to learn. First attempt, 5 x 45 sec lights, 5 darks @ ISO 400, 90mm, f/4.0:
  10. The principle of this triple imaging rig is to have three virtually identical imaging systems using Atik 460EX cameras and vintage ex-SLR high quality camera lenses as used on the Asahi Pentax SLR camera. Various focal lengths are available and these old lenses are readily available at sensible prices on that well known auction site. When used for narrow band imaging these lenses perform superbly and the narrow bandwidth eliminates chromatic aberration. Each lens/camera covers a very narrow part of the spectrum and is individually focussed. Following on from my earlier thread I have decided to start a new thread for my widefield triple imaging rig as there has been a big change in the design. The camera and lens arrangement has gone from three in a row to a triangular (turret) arrangement. The other thread was getting rather long as well. My latest design is also different from the previous turret in that the earlier one used an OAG on one of the lenses for guiding but I have decided to go for a separate guide scope placed between the imagers in the centre. I am going to try the finder scope from an ST80 with LodeStar guide camera (removing the eyepiece and crosshairs and replacing with an adapter to take the LodeStar). The idea of the turret is to enable me to frame the DSO in the oblong imaging frame to best advantage while guaranteeing that all images remain aligned but without changing the balance. Once the image is satisfactorily framed the turret will be locked in position so that it doesn't change during imaging. The guide scope and camera will remain fixed and aligned with either RA or Dec axis of the mount for more reliable and predictable guiding. To provide the above I propose to have a fixed aluminium tube through the middle carrying the guide scope with facility to change the pointing angle to capture a good guide star. As usual, once set this will be fixed during the imaging run. The main triple imaging system turret will rotate on this central tube.
  11. Took these last week. The first is a wide field of the area around the constellation Aquila. I did not intend to image Barnards E, i never even knew it was there! I just pointed the camera at that area as i knew there would be some nice dusty stuff floating around was quite surprised when the first exposure came in showing the 'E'. I used the Canon 50mm 1.8 for this image with a Canon 1100D unmodded. I now intend to for this to be the first panel of a mosaic i hope to crack on with. The second image is again of Barnard's E but shot with the 200mm for a closer look! I had a lot of trouble with the second image. I was getting a blurry result from Deep Sky Stacker which was very frustrating! But thanks to some fellow imagers the problem was sorted. Too many stars, DSS was finding over 30,000! So i had to move the slider (which i hadn't touched in months) up to 70%. Also, the stars are a bit trailed also due to polar scope collimation issues. And i may as well throw in this image of Cassiopeia which was also shot with the nifty fifty! The more i use this lens the more i love it Thanks for looking Clear skies
  12. Hi all, I have finally decided on starting building a fixed focal length collection. I settled on the Explore Scientific 82° range but due to only having a Baader Zoom 8-24mm and a couple of cheap EP's that came with the scope, i just wondered due to starting from scratch, what selection of EP's would be the best? I'm thinking starting with 3 EP's from the range, but really can't decide...If anybody has any guidance or suggestions to make this easier, that would be great Thank you for reading this and I appreciate any feedback. Dan. @Spanners360
  13. Aenima

    M45 Widefield

    From the album: Venture in widefield.

    Pleiades - a few 1-2min exp stacked. Nikon d3100 w/nikkor zoom lens

    © Aenima

  14. swlloyd3


    From the album: Ha - Widefield

    A re-edit of the original shot. Additonal 8x10minutes added to the image. All of the same settings used for this one.

    © stephen lloyd 2014

  15. From the album: Ha - Widefield

    A shot of the Cygnus area at 50mm in Ha

    © Stephen Lloyd 2014

  16. Had a clear, but v cold night here last night (11th Dec), and got the widefield rig out again. Skies weren't too great, despite the cold - a covering of snow always seems to make for much brighter skies. I imaged the area around the Flaming Star Neb (IC405) using the modded 350d + Canon 85mm EF combo. Here's 79x5min (6h35m) at ISO400, f4, through an IDAS P2. Lens is a bit sharper at f4.5, but wanted to try and get as much signal as poss, without completely wrecking the stars. I offset the framing to have a tilt at getting the SN remnant Simeis 147, the Spaghetti nebula (Sh2-240). Bearing in mind this is a non narrowband image with an uncooled camera, I'm fairly pleased to see it there (though v faint!!!). Most definitely one for an HA filter attempt with a more suitable rig! Would have been nice to have M37 not quite so close to the edge... :-/ Original and annotated at 2048px width below. Thanks for looking!
  17. Far from perfect, but many firsts for me, a first proper test of the ZWO1600 and Samyang 135mm lens combo with Baader narrowband filters. About an hour each Ha, Oiii and Sii last night at f2, no calibration frames. For some reason Astroart rejected some of the subs, don't yet know why, need to investigate, guiding seemed OK all the way. I'll reprocess later more carefully, as I notice even have some satellite trails in this one.
  18. Hi all, Last week I made some photos using my canon 500d on fixed tripod, with also the darks and bias. The results were not bad, but no milky way really visible, and I've been trying a little bit to fiddle with DSS parameters, or ACDSee, but no luck. I thought maybe the lack of flats was partially the cause of this, so I made some, yesterday. But probably I haven't understood flats at all, because instead of cancelling the vignetting, it added bright vignetting...... So my question is, if my lights are 30 20sec subs, 1600 ISO, f/4.5 at 18 mm, what should my flats be like? I did 30 subs at 1600 ISO, f/4.5 18 mm, but left the exposure automatic, which meant 1/320sec... (I used a tablet screen using a flashlight app). The flats show vignetting. If I had kept the 20sec exposure, they would obviously be completely white, overexposed... I attach two photos, one with, and one without the flats... NB: the one with bright vignetting is the one WITH the flats... :-/ thanks for any help!! Gerhard.
  19. I love this target. I had never shot it using a wide field setup. Nebulae and star color match perfectly in this frame. The Cave Nebula, Sh2-155 or Caldwell 9, is a dim and very diffuse bright nebula within a larger nebula complex containing emission, reflection, and dark nebulosity. It is located in the constellation Cepheus. More: http://www.celestialpixels.com/Nebulae/i-JV4Xdpx/A Telescope: Takahashi FSQ ED85 Camera: QSI 683L Mount: Astrophysics Mach 1 GTO Filters: Astrodon Gen II LRGB Total exposure: 7h Subexposures: 5mins bin1x1 L , 5min bin 2x2 RGB Location: Mt. Parnon Greece
  20. I re - processed in Lightroom and what a difference.... what do you guys think.
  21. Having just had a baby (called Lyra) 1 month ago, the telescope is somewhat of a dusty memory at the moment. It was my birthday 2 weeks after the baby was born and my partner bought me a gift on the baby's behalf, of a pair of Vixen SG 2.1x42 Widefield Binoculars. We live in London with all that entails astronomywise, but even so that is where they got their first test. They are really remarkable. I suppose where we live you can see about 50% of what you might call the main stars of each constellation, but I would say the Vixen's easily up that number by about 10 times. I read a review that described them less as binoculars and more like bionic eyes. That really gets it, because you can see large parts of the sky but in detail as never before. The focusing takes a bit of getting used to and it is important to get them opened up to exactly the right width for your particular face, but once this is achieved Pleiades for example just pops right out and you can see maybe 10 stars which by the naked eye would have appeared as slightly more than a blur. Being able to see the whole constellation is so nice and I think it will give me a much better understanding of the skies. Hopefully by the time the baby lets us get back onto the telescope we will have a much better feeling for the geography of it all thanks to these super binoculars.
  22. Hi, As there are many talented imagers here, and i'm struggling with the unfamiliar techniques involved It was suggested I post a thread and hope that anyone can help with the issues I seem to be at a loss on. Apart from inexpensive lenses, the coma and CA I seem to be getting not only vignetting in the corners but a kind of almost 'dirty' area in the middle like vignetting but with a strange colour to it like the whole middle area is not quite stacking right, or its during capture that the problem starts. Also, processing so many stars is overwhelming either the software or me or both, although i'm sort of sure the data is saveable but the processing ive tried so far just seems to make it more messy. Apologies in advance for the bad explanations and babbling, pls be patient with the text in this post. this is double cluster area, the big reddish blotch like a severe vignette - it looks to me like it stacked badly and the centre looks thin and flattened. this looks like gravely snow which got trampled by muddy footprints with ill-defined dark lanes or something. again with the reddish murky look where the 'tracks' are. Sorry for weird analogies but the technical terms escape me. some more vignette type issue. reddish muddy look and the appearance of uneven stacking also in the middle bit. I tried flats but not sure they were done right and the images with flats dont seem any better. These aren't the only problems but i'm not really certain what i'm doing right or wrong to be honest, i'm hoping you folks can shed some light on it. Any help appreciated, and many thanks for looking. Regards Aenima
  23. After heading up to the highest point around I managed to spot all three tonight in a lovely triangle. Massive bank of cloud low down. Venus popped into view closely followed by Jupiter, then a lucky break between the cloud bank and all three. Canon 30D, Helios 135mm f2.8 stopped to f4. ISO 100 at 1/8s Thanks Jamie
  24. From the album: Widefield DSO

    Large region of Cygnus presented in Hubble palette, or at least the nearest I can get to it.
  25. From the album: Comets

    Widefield of Comet Lovejoy from 24 January 2015. Taken with a Canon EOS 700d and very cheap 50mm f1.8 lens. First time I've used this lens for shooting the sky and f1.8 was probably too much aperture as it seemed to make focus difficult. I'll try stopping down next time

    © Rob Carlton

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