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Found 61 results

  1. Hello! I'm from Hungary. This is my first post. I am glad to be here. Recently I'm trying to sketch some deep-sky objects. I've made this observation yesterday. Cygnus was near to the zenith and the sky was pretty dark. NGC 7000 is one of my favourite target. I like to observe it with any telescopes, especially with RFTs and with UHC filter. Please excuse my language errors. Gyuri
  2. Following on from my other mini-observatory threads, I'm now thinking of a small dome observatory for my widefield imaging rig. Several previous ideas for a mini observatory have bitten the dust! I have a number of thin aluminium sheets the I bought for my earlier cylindrical roof mini obsy that can be bent into the sections of a multi-sided dome. Why a dome? Well, it is more compact, requires less power to drive - this observatory and contents will be fully automated - and a dome provides more protection from wind etc. No space is required inside for a person in this case - just a Raspberry Pi 3 for controlling everything with INDI drivers. Not even a laptop.
  3. Last week on august 5th we were treated to a coronal hole followed by some G1 auroral activity here in New Zealand. Unfortunately I live a bit too far north to capture the spectacular Auroral images. However, ever the optimist, I set my canon 6d with a Samyang 14mm lens up in my backyard and captured 300 or so shots (20 seconds at iso 3000) which I then sent through to lightroon timelapse. I'm quite pleased with the result. Definitely some colour there.
  4. From the album: Alvin's Time-lapses

    Attention: The quality of this video here has been reduced due to file size restriction. A slightly better version can be found unlisted on YouTube (308mb). Description: A series of time-lapse short videos set in different locations within South Hampshre at night. All scenes were taken between a Bortle 4-5 area, and each clip equates to 5-6 hours in real time. Please check your volume as this video contains music. Equipment / Software: Canon 550DTokina AT-X 11mm - 20mm Vixen Polarie Adobe Lightroom Adobe Premier Pro Special Thanks: Alexander Blu - Background Music ==================== Note: My first time producing a proper time-lapse video. Unfortunately the amount of noise and hot pixels were much worser than expected when I reached the video editing stage, and I need to learn how to apply darks against individual frames en masse. I am not personally satisfied with the final quality, but still thought I should share with what I have on here. Please feel free to leave a comment, critique, suggestions and guidance on here, thanks!

    © Alvin Ko

  5. Hi everyone! I was lucky enough to spend Easter in Mauritius and managed to get a night of imaging in despite the tropical night time clouds! As someone who lives in the Northern hemisphere, the Carina nebula has always been a target I've coveted, but during my holiday, I also loved Crux as prominent constellation in the Southern sky. So when I ran into polar alignment issues with my Skyguider Pro, I decided to play it safe and go for a wider field, capturing both those targets rather than focusing purely on Carina as was my original goal. This was shot from my father in law's rooftop in Bonne Terre, Vacoas, Mauritius and my basic polar alignment meant significant field rotation, but I still got some usable data. Cropped, processed and finally upsampled. Data was shot at f/2.8 with a 50mm lens, unguided on an unmodified Sony a6500. 174 lights at 30 secs each = 1.4 hours of integration. Bortle 5. From the colours it looks like these objects sit right on the disc of the Milky Way and I know there is more in the picture I haven't mentioned! Thanks for looking!
  6. Here's a couple of quick hand held shots from yesterday (30/6/15) of the conjunction. Not sure why I was too lazy to get the tripod out and do a proper job... anyhow here they are (might need to zoom in a bit on the wide shot to actual see the planets!). Both taken with a Canon EOS700D with a 50mm EF lens. The upload compression does take a bit away from them. Too much wispy cloud to get anything tonight... Cheers, Rob
  7. Here is my intended setup for widefield but for now until I get the hang of it, I will just use the mount and camera. This setup includes Canon 1100D with RDF mounted to the hotshoe, 9x50 finder modified to a guidescope, QHY5L-II as the guide camera run from a Packard Bell netbook. Lenses are Vivitar Series 1 200mm f3, Panagor 135mm f2.8, F.Zuiko MC 50mm 1.8 and a Tokina 11-16mm 2.8 ultra wide lens. The whole purpose of this setup is portability due to living in a flat and I find my CG5-GT to bulky to cart around. Excuse the poor quality pics as they were taken on my phone.
  8. I forgot to share this one last month. Between travel for business and brutally cold weather closing down my nearby imaging location in the mountains I have not had time to image this year. This was taken at the beginning of December and contains a very busy wide field splitting the constellations Taurus and Perseus. The better known DSO's are M45 the Pleiades reflection nebula and NGC 1499 the California emission nebula. The center of the image contains a dark nebula which I am not familiar with and the rest of the region is quite heavily laden in ISM interstellar medium dust. This image was taken with my unmodded T3i Information about this image camera: unmodded T3i ISO:1600 Exposures: 102 x 100s Darks: 5 ugh, mishap Bias:450 frame master Flats:35 Lens:SMC Pentax M* 50mm F1.7 stopped to F4 SQM: 21.1 Seeing: 3/5 Transparency:3/5 Calibrated and partially processed in Pixinsight and finished off in Photoshop CC 2017. M45 and California by Wes Schwarz, on Flickr
  9. I took these images on Sat 25th Nov from here in W Oxfordshire. I've got the widefield setup running now using a RPi3 running KStars and Ekos. This controls a modded, uncooled 350d (with Baader filter) and a serial shutter cable, an Arduino motor focuser (as a Moonlite compatible focuser) and the Losmandy GM8 it all sits on. Images were taken through a Canon 85mm f1.8 EF lens at f4.5, exposures were 45 x 300sec (3h45m total) at ISO400 through an IDAS P2 filter. The field is a whisker over 15x10 degrees. Processing was in PixInsight and a bit of work in Photoshop to reduce a bit of amp glow that didn't calibrate out fully. Fairly pleased with this (though the Heart and Soul have come out maybe a little red - the colour calibration uses PI's PCC tool, and the IDAS filter might throw it a bit), but there's some other areas of interest coming through in the image. Annotated image attached but there are a few other bits that PI doesn't grab - there's a small area of reflection nebula (LBN 142.14+01.97) to the left of Sh2-202 that's just coming through. Also, unlabelled are Stock 2 (between the Heart and the Double Cluster) and for the interested clouded out astronomer, galaxies Maffei 1 and 2 are visible in frame just below the Heart (labelled as Sh2-191 and Sh2-197). Thanks for taking a look!
  10. Hello all, I think I'm done with this target this season at least. I acquired 2x6h of Ha data with a Canon 300 F4 L lens (~300mm FL F/4), maybe 2x4-5h of O3 data with the a Tair 3s (300mm FL F/4.5), another 2-3h of Ha with a Pentacon 200 (200mm FL F/4), 3h of O3 with the Pentacon, 4h of S2 with the Pentacon and 3x25m (3 panels) for each RGB with the Tair. All narrowband subs were 300s long and the RGB were 60s long if I remember well. All at unity gain, cooled between -10C and -15C. Shot from the balcony under white light pollution. I made a narrowband combination with the Ha and just a bit from the others used as lum and 40S-60Ha as red, O3 as green and 30Ha-70O3 as blue. Combined in StarTools and GIMP. Software used: APT, PHD, DSS, StarTools, GIMP, Registar. The RGB and narrowband images don't cover the same area perfectly so some stars in the left side are a little more bloated as I couldn't control them. Links for better resolution: https://drive.google.com/open?id=0ByhJ_xuQxcnjejEwN3pCeWR6Znc https://drive.google.com/open?id=0ByhJ_xuQxcnjaFlFSDMzSkYzd28 Should I make the them brighter? Any opinions are welcomed. Thanks for watching, clear skies! Alex
  11. The Veil Nebula is a diffuse nebula located in the northern constellation Cygnus, the Swan. Also known as Witch’s Broom Nebula, Bridal Veil Nebula, Cirrus Nebula, or Filamentary Nebula, it constitutes the visible parts of the Cygnus Loop, a supernova remnant in Cygnus. It is located at an approximate distance of 1,470 light years from Earth. In this wide shot you can see the three main parts: the Eastern Veil, the Western Veil, and Fleming’s Triangle (Pickering’s Triangle). Full resolution: http://www.celestialpixels.com/Nebulae/i-zcwHVLh/A Telescope: Telescope: TAK FSQ85 Camera: QSI 683 Filters: RGB + Ha + O3 Total Exposure: 12h Location: Mt Parnon @ 1430m. Greece
  12. Another widefield I took on 25th/26th Nov using my Baader modded 350d and Canon 85mm EF f1.8 USM (working at f4.5). This is 21x5min, so 1h45m total taken at ISO400 using an IDAS P2 filter from here in Oxfordshire. I'm sure the region doesn't need too much introduction. To be honest, it needs a lot more exposure, and arguably taking with something more sensitive with less read noise! Being a bit further south would help me too...there was a heavy dose of DBE to sort the gradients out here. Barnard's Loop, the Bogeyman, M42/3, Flame and Horsehead all relatively easy, and the dusty stuff (part of The Orion Molecular Cloud Complex) that extends between them passing by M78 is reasonably obvious, though the fainter stuff is all a bit noisy still. There's also the bluish nebulosity LBN 915 *just* on the limit of visibility to the right of Sh2-278 that extends around the right of eta Orionis. As I said though, it all needs much greater SNR, and less need to resort to MMT for noise reduction... (any more and it started to adversely affect the image). Both images reduced to 2048px width here for convenience. Thanks for looking.
  13. Heres my version of NGC 7000 and the Pelican nebula, taken back in 2015, through my William optics zenithstar 70ED with focal reducer. To fit it all in I did a 4 pane mosaic. Think the subs where 15 x 6 mins for each pane..........hope you like.
  14. Taken on 27-05-2017 It could be called work in progress, but not sure if I'll be finishing it, still don't have RGB filters, and I'll probably not going to get them in time to complete the image this year (maybe next year, but really, in my opinion this target deserves up close and personal focal length). I was actually waiting for some bits and pieces to give this camera proper first light on RC8" (I did try it out in this combination, kind of, but due to technical difficulties no subs were recorded in previous session), but could not resist clear night on a weekend, so I paired it to TS 80 Apo to try it out. I'm actually really amazed with the result. There are couple of issues, like a bit of astigmatism in the corners (probably due to not getting distance between camera and FF quite right). Also there are reflections around stars (not processing artifact, this is probably due to filter placement). Data: 120 x 1m Lights (2 hour total), x256 Flat / Dark Flat, x64 Dark, taken at -20C, Gain 139, offset 25 Equipment: TS80 F/6 Apo, TS FF x0.79, ASI1600mmc, Hutech IDAS LPS P1, TS60 F/4 guide scope + ASI185 + ZWO IR pass filter (guided in IR only), HEQ5 belt mod + tuned. Software: SGP for capture, ImageJ for calibration, align and stack, Gimp 2.9 for curves Conditions: LP red zone, good transparency, average seeing Image is presented in full resolution / no binning or crop I did not do any noise reduction, but there might be some slight softening due to using .jpeg. Also no sigma clip for this version (hence satellite trails, it was a busy night ), I'm yet to figure out how to do it with such a large amount of data in ImageJ (calibrated set is 7.4GB, and I only have 8GB of ram, so need to figure out how to split it to do it in chunks). I think this camera is awesome, I honestly did not expect this number of background galaxies to pop out in just 2h with 80mm scope (certainly not from red zone). As always, comments and critique are welcome. Thanks for looking.
  15. 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
  16. 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?
  17. 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/
  18. 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?
  19. 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.
  20. From the album: Slynxx Learning Curve

    First try with SW Star Adventurer. 20 x 60sec subs. No Darks. Edited in Photoshop.
  21. From the album: Widefield

    © Graeme Healey Photography

  22. TractionMan

    Satellite120622

    From the album: Widefield Shots

    Konica Minolta Dynax 5D and a Tamron 17-50, f/2.8 lens 15 sec exposure, continuous mode with shutter locked.

    © Stellan Johansson

  23. From the album: Astro snaps

    Canon 400D, 15s exposure, Gaussian blur in Gimpshop to subtract light pollution. You can just about see the Andromeda Galaxy on here.
  24. Second attempt at astrophotography with my canon 1300D untracked (first was orion ). Shot under dark skies of himachal pradesh (India). Stacking done in DSS and processing in Gimp. Any suggestions would be appreciated. especially regarding the trees at the bottom. Total exposure time - 20*20 seconds Shot with - Canon EOS 1300D (untracked) (unmodded) Flats and Biased frames included
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