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Found 127 results

  1. alan4908


    From the album: Deep Sky

    Following my previous attempt at M31, I decided to see if I could improve the final quality by increasing the total exposure time to c7hours. I also decided to use the free software program eXcalibrator to colour calibrate my OSC, this is because I've always struggled to get the correct colour balance in post processing. Finally, I stacked the RGB channels separately using CCDstack2+, to give more accurate data rejection. The image was post processed in MaximDL (DDP), CCDstack2+ (Deconvolution) and PS CC. LIGHTS: 42 x 300s + 23 x 600s, DARKS: 30; BIAS: 100; FLATS: 40. The image was acquired between Sept 15 and Jan 16 with a Trius SX-26C and ED80.
  2. From the album: Starchasing

    Mt first attempt at imaging M31, the Andromeda Galaxy at prime focus using my Nikon D-50 and my Orion 127mm Mak. You can see a few dust lanes in there!
  3. rotatux

    2013-08-04 m31

    From the album: Barn door tracker (wide field)

    Try barn-door at M31 with longer focal (supposedly not possible) Capture: 1 x 90s x 800iso, auto dark, Canon SX110IS at 34.9mm (210mm FF) :4 on barn-door tracking manually Processing: UFRaw, Gimp

    © Fabien COUTANT

  4. From the album: Wide-field (not barn-door)

    M31, Great Andromeda Galaxy Capture: 24 lights x 60s x 2500iso, 8 darks, Olympus E-PM1 with Pentacon 200mm/4 (model2) @5.6 on Omegon EQ-300 tracking RA, neodymium filter Processing: Regim 3.3, Fotoxx 12.01, Gimp 2.8 Date: 2016-09-08 Place: Deep country 26km from Limoges, France

    © Fabien COUTANT

  5. goose35

    M31 M32

    From the album: DSO Imaging

    60x1 min unguided subs with 20 each darks, flats and bias Stacked in DSS Just missed M110 after cropping out the drift.
  6. From the album: DSO, Nebula, Galaxies, Comets etc

    M31 The Andromeda Galaxy with dwarf galaxies M32 and M110 Taken on 01.11.2015 using Canon 100D DSLR on Skywatcher Star Adventurer Stacked image comprising 6 x 2 minute exposures at ISO 800

    © vicky050373

  7. uhb1966

    dew ate my m31!

    From the album: uhb1966-1

    © c 2014 uhb ;)

  8. From the album: DSO

    54 x 2 minute subs. 9.25" Hyperstar / QHY8L on Avalon M-Uno mount. Guided and dithered with PH2 + Nebulosity. Processing in Nebulosity and MATLAB. 68% Moon, which may explain the lack of good colour?
  9. Jannis

    M31 2

    From the album: Astro Gallery

  10. GlassWalker


    From the album: Widefield DSO

    Canon 600D unmodified + Astronomik CLS filter. Sigma 120-300 f/2.8 OS. 19x2m
  11. Discovered 12 March. Mag 15.1, type unknown (tbd) http://www.rochesterastronomy.org/novae.html#2019bsd Could be one to watch as it should brighten further... shame it is so poorly positioned at this time of year Alan
  12. My first ever M31 ! For us in NZ this object is a real challenge as it never rises more than a few degrees above the horizon. This is actually as high as it gets and I have included a wide field shot to demonstrate its position at the moment. Coupled with fairly ordinary seeing I’m really rather proud of my first attempt. It really tested my polar alignment and my excellent star adventurer Mount. There is a nasty gradient and it’s a bit brown but apart from that I can see dust lane ! I’m still saving for pixinsight as I suspect there maybe more info in this image. All comment and criticism is welcomed. Cheers, Andy Canon 6d 75-300mm @ 300mm Iso 4000 32X120 seconds ( 1 hour 4 minutes total integration) 15 darks 20flats 20 bias Processed in photoshop and Lightroom
  13. Had scope out last night but seeing was rubbish due to moisture so I decided to piggyback my dSLR & capture some widefield shots. All images are taken at 14mm on my 4/3 dSLR, equiv to 28mm full frame. Pleiades or M45 by 1CM69, on Flickr M31 Widefield by 1CM69, on Flickr Orion widefield showing M42 nebula by 1CM69, on Flickr Thanks for looking.
  14. Hello all My M31 I did yesterday evening. Processed in Lightroom. Let me know your thoughts. No guiding by the way! http://www.astrobin.com/full/276805/0/?nc=user Gerry
  15. I decided to have an attempt at generating my first mosaic and picked M31 since it would require only 4 panels to achieve a reasonable framing. Having learnt how automate the image acquisition, six weeks later I had quite a few images....... I then had to figure out how to assemble the mosaic. After a little research, I decided on a combination of RegiStar and PS and ended up with about 13 hours per panel with a LRGB + H blend. The result is below, which I quite like. Comments and constructive criticism are welcome. Alan M31 core (cropped) LIGHTS: L:16,16,18,12; R:19,12,15,13; G:16,18,9,10; B:18,19; 13; 16 x 600s; H: 5, 8, 6, 6, x 1800s. DARKS: 30; BIAS:100; FLATS: 40
  16. Everyone, This is only my second real attempt using my ASI1600MC with 5 filters, LRGB and HA (7nm), prior to this Ive been using a un-modded Cannon 600D with my 106mm APO. But this image was taken with a Samyang 135mm lens, many people talk about how good it is at f2 and I am very pleased with how my image has turned out, it is by no means perfect in any sense, there are gradients all over due to light pollution from two distribution warehouse parks, to my north and south west and skyglow from Milton Keynes to my South East. However, this is where I live so I have to work within the limitations of the location. Image details Andromeda Galaxy M31 Tuesday 15th August Camera ASI1600MC, set to unity gain Capture software APT L 60 subs R 40 subs G 40 subs B 40 subs Ha 60 subs A total integration time 2.5 hrs of data The LRGB subs were 30s unguided on my azeq6, that I got tuned by David Woods at DarkFrame, @Woodsey65, I wasn't pushing for longer subs on the visual side as at unity gain more than 30s gives me a very washed out image due of course to the light pollution. I used 60s subs with the Ha(7nm) - they are all Baader filters. I then took 20 darks, 30 Bias and 20 Flats for each filter and used DSS to register and stack the images, I used the APT Flats assistant with a LED flat screen and two sheets of A4 paper to take flats next morning. I used Registar to register all the resultant images and used Registar to combine the RGB files than went into Photoshop CC2017. I had to buy Registar after struggling to align everything in PS and combine RGB. SGL search to the rescue and Registar was highlighted as a very useful tool - and yes it took away the alignment pain I had been fighting for half a day. I have Gradient Exterminator and used it at various points in my processing, but there are still issues with gradients due to light pollution and possibly my flats. This was also my first time including Ha data, I followed Steve's, @steppenwolf process by mixing R and Ha in a new file and replacing the R channel in final image with the resultant R+Ha mix, phew... it takes time to understand all this stuff. Below is the full image and a cropped image of M31 and a pic of the equipment used, the stars look reasonably round, bottom left a bit out of shape, I think I got good focus with help of a Bahtinov mask and the APT focussing tools. The micro adjuster from Teleskop-Express was also a good recommendation from SGL members. I would be interested in comments around reducing the gradients, and of course any other pointers to improve next time.
  17. Had to adapt and conquer last night as usual. I first tried for comet 2P/Encke but alas it was already into the trees just as it was getting dark enough. I had to switch gears and target quickly before the full moon arose. Andromeda was the logical choice being straight above nice and high and bright. I quickly slewed refocused and started imaging. Here is 15 lights frames and 25 darks at 300 seconds and ISO 800 with a late 90's USA made C8 and Hutech modded spectrum enhanced 700D. I stacked everything in DSS median method and mosaic results. Just used levels and curves and then edited it in Camera RAW. Really love the warm glow of our closest Galactic neighbor. I was hoping to gather more data tonight but it looks like a bust here so I'm going ahead with the processing and let it fly. Let me know what you think.
  18. Taken on January 30. Camera & settings: Pentax K20D with 135 mm f/3.5 lens at f/5.6, ISO 1600 21 * 240 sec exposures, bias frames and flat frames (from the night before) Mount: Skywatcher EQ3 Pro Software: PixInsight Usually the air is very dry during the winter, but not on this occasion. We'd had mild weather with lots of moisture in the air. In this case, I think it worked in my favour. BTW, I didn't dither between frames, and I couldn't completely get rid of the streaks from hot pixels.
  19. Hi all Had a few hours of rare clear sky last night so I thought I'd try and recapture an oldie in M31. I have to be honest I'm not that pleased with the result (I've only given it a quick 10 minute process - still too pinky for my liking) and the dust lanes are relatively hidden but I guess its not bad with an un-modded 1100d. 23x300s (+darks, flats and bias) WO GTF81 on an NEQ6 Canon 1100d (unmodded) SD80, Lodestar and PHD for guiding As always I've loaded up the raw data to dropbox if anyone fancies a play or just wants to use it for their own practice. You can find it here: https://www.dropbox.com/s/5uqdwjp4yqnzzpg/M31.300s.TIF Thanks for looking, help and advice always welcome Will
  20. My first ever pictures (well, the best so far) doing experiments with the little Nikon V2, The kit 30-110 Zoom at 110mm, ISO 1600 and using a startracker2. These are 30 sec x 40 lights, 4 darks and 4 bias frames. Aligned and stacked using DSS. First to note is that I think that spending a little time setting up the startracker2 paid. The stars look round and there are well defined dark lanes. Everything seems to be in focus but the shots are a noisy. Less ISO next time! But I'm surprised about the V1's capabilities in AP. The first one is a wide view and the second is a DSS 2x drizzle of the area where M31 is. I'm quite glad and excited enough to try next with the D7000 and longer exposure to see if I can get more colour (and more darks and bias frames - you guessed it, I almost forgot!). At present it all look a bit B&W.
  21. Saw the stars for the first time in what seems like ages tonight, but as the forecast was not good, I decided to jump in the car and check out a site I saw a couple of weeks ago which is a couple of miles from my house. I was not expecting too much as it was not that far from a reasonable sized country lane, but I was really please that when I got there the skies were completely clear and above me was the best sight of the Milky Way that I have ever seen . Pleased to say that the road was sufficiently shielded by hedges so no headlights messed up my night vision, so after 10 minutes with the binoculars I decided to set up my ZEQ25 and attached my newish camera & brand-new len (Fuji XT1 & 56mm f1,2 R XF). Possibly should have spent a bit longer focusing, but as it felt like the clouds were not far away I grabbed two 120 second exposure shots of Deneb and M31, at ISO200. Sure enough, as soon as my photo of M31 was taken, the skies clouded over; clear to 100% cloud cover in <2minutes . Bit disappointing as I would have loved to have had much longer improving the focusing and trying a few other settings (ISO & exposure length), but it was just nice to get out again, even if it was for just an hour . My two photos from tonight, with just a bit of stretching applied. Will definitely be visiting this car park again, hopefully with my scope next time Deneb:- M31:-
  22. My first (very poor) attempt at imaging M31. Andromeda Stack.TIF 34 Lights of 30" duration, No Darks, Flats or Bias's. Canon 1100D controlled by EOS Utilities. Celestron 2" focal reducer. C8 XLT on a CG5-GT mount, unguided.
  23. Hi Guys, tonight I took my new telescope out for the first time since I got it, having had some issues since October that have restricted my viewing to Jupiter and the Moon and then the weather.... Anyway, tonight seemed promising, clear skies all day going into night albeit a little hazy here in South Oxfordshire as we are rather too close to the Thames. So, thinking I had fixed my issues I went out for a look. Can anyone help me with confirming my observations (particularly the DSO) and in particular can anyone PLEASE help me with my continued issues with my telescope? Here are my field notes: Weather: Clear, little/no breeze, bright Half Moon near zenith, LP was fairly high due to a couple of local houses and the moon, but I was in a 'shaded' area. Possibly 'fairly' hazy. Targets: Moon, Jupiter, Andromeda Galaxy (M31/NGC 224). Observations: Moon: Half moon, high in the sky VERY bright (note). Good views of the whole moon using a 25mm lens, but could not get my Samsung Galaxy S2 to take a decent picture as the image kept turning the moon into a fuzzy white blob. 25mm lens soon misted up so I switched lenses. I got Excellent views of craters and seas along the 'light/dark' divide using a X2 Barlow and a 10mm lens (see pic below taken with my Samsung Galaxy S2 with the moon approximately centred - I think). Notes: Why does my S2 not work with the 25mm EP but with the 10mm x2 Barlow setup? The moon is BRIGHT, use the moon filter next time! Jupiter: 25mm Lens showed Jupiter as a bright brown object about the size of the inside ring of a Polo mint with 4 moons in a loose diagonal (top left to bottom right) formation starting from approximately the centreline of Jupiter (offset to the left of course) down to below the planet offset by nearly equal distance to the bottom right. Switching to the 10mm with x2 Barlow Jupiter grew to about the size of a garden pea. I could make out two distinct brown bands in the centre and possibly a brown cap on the top (north) pole. No sign of the BRD, perhaps it was not good enough visibility or perhaps it was on the other side? Looking at the moons more closely from top left moving down to the right, the first moon (top left) seemed furthest away, next right seemed to be the closest and on the right side (and below) seemed to be the next closest followed by the final moon in the 'penultimate' furthest away position. Notes: Could getting a 6m or 4mm improve the image detail? Reference to 12DString website shows the moons as (top left to bottom right): Ganymede, Io, Europa, Callisto. Andromeda Galaxy (M31/NGC 224): Optics used throughout was a 25mm EP. Well, this really was an eye opener. IF what I think I saw was M31 then I am staggered at how little there was too look at. As I cannot be certain I was looking in the right place (see my plea for help below) I shall describe what I saw. M31 (till proven otherwise) appeared to be about twice to three time the size of a garden pea, appearing in a elliptical shape with the apex of each ellipse appearing top left and bottom right. Object had no colour and was almost impossible to notice. In addition, putting the telescope 'bang on' it made it 'disappear'. In order to view it, best results seemed to be gained with an off centre targeting and by looking in the opposite direction. -Does this sound about right for M31 to anyone? (More) issues with scope: A plea to anyone in the know! I have been having trouble getting the telescope to 'find' targets accurately despite a good 'sky align' 3 star alignment. Every time the scope seems to be out by about one to three 'fingers' in the lateral (up down) axis and perhaps a teeny/tiny bit to the right. I find this aberration to be very disconcerting as it makes gaining confidence in the telescope very difficult unless the target is self evident and bright (eg the moon or Jupiter). It also means that as someone who started the astronomy hobby about two months ago, I can't rely on its positioning to help find 'harder' targets like DSO's. As I have no point of reference as to what to look for (or where) it makes confidence and fun hard to come by. All reviews I have read of this scope say its great, especially for beginners and even a naff alignment will get good results. I spent an hour getting a great calibration of the red dot sight with the optics (on a 10mm lens) and I believe I am setting it up right - can anyone offer any observations or suggestions. I think I have set up the correct TZ (standard timing, (i.e. NOT daylight savings), universal time code) and I used an app on my phone for my Long/Lat and time derived from the GPS satellites (I have tested the app and its extremely accurate so this can't be at fault). -Please can anyone offer any advice? Regards, Sharpe
  24. More from last night... A quick Andromeda. Don't look at Bob's for comparison and I might get away with it! Canon 600D unmodified + Astronomik CLS filter. Sigma 120-300 f/2.8 OS. 19x2m M52 and bubble nebula. Need more focal length on this one. Canon 600D unmodified + Astronomik CLS filter. Sigma 120-300 f/2.8 OS. 17x2m 100% crop of bubble.
  25. Last night there was no moon and the sky was pretty clear. I decided to take a bright object and experiment with dithering. (APT and PHD) I had some trailing in the end of the session and had 20 subs of 150s each to work with. I was amazed what I was able to get out of the data with just 5 flats.darks and bias frames.. Actually its one of my best images I made since I started this year with astrophotography I am with it.. 20x150s ISO 800 with Baader Neodymium filter
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