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Found 168 results

  1. Tried capturing M42 and horsehead nebula last night with my new Astro-modified EOS Rebel XT. During post processing I noticed these weird spots and lines across the image. Would you happen to know if this was because of the mirrors of the telescope (i.e. dirty mirrors) or is something wrong with the camera? What's weird is that this 2 images were taken with the same exact camera at the same exact position but some artifacts visible on M42 did not show up on the horsehead nebula. Btw I checked the mirrors of the telescope but I cant find the weird long spots
  2. So I know Orion has been down now for a while, but I just wanted to share this one. For me, it was a literal labour of love. Orion took on a more personal meaning for me at the tale end of last year, much more than just a target in the night sky. I won't bore you all with details, other than it was all very Romeo and Juliet. Anyway, the one night we went for a drive the other side of Hereford (this was mid February), took a firepit, hot chocolate, jacket potatoes and some very warm coats! It was a blustery night, the intervalometer was acting up and Orion was still in Hereford's light dome kinda. But, still managed to get some images with the 18-55 kit lens on the trusty Nikon 5300 despite all of that. Had all but given up on the stacking and processing 2 months later but decided to run it thru Sequator as DSS wasn't working for me. Was 2am, I was dead tired from work and my good old thyroid in full on flare. Happened to yawn, rub my eyes and momentarily refocus them on the laptop screen...to realise I could just very faintly make out Barnard's Loop. Spent the next couple of days rerunning the stack thru Sequator with different parameters to finally produce the attached image. It's messy, it's noisy as hell, it's nowhere near technically correct, but for ME it's a very bittersweet image (two days later Romeo and Juliet parted ways) and a reminder of what happy is. Anyway, I just wanted to share it.
  3. Hi, Some old data from last November; before my camera was modded. The original image was processed with DSS and GIMP, the new version with DSS and StarTools. I'm still quite noobish when processing with StarTools. but its a really fun program to learn. On this image I forgot to desaturate the sky background to remove the LP colour glow--when I do a reprocess I will do that. I'm hoping that there will be some clear skies around November-December this year to get some better quality data. The streaky noise is caused by the rather noisy CMOS and no dithering--I didn't start using APT until the New Year. The gradient is caused by the secondary being not quite centred under the camera up/down the tube. Around 1 hour of 2-3 min subs, ISO 800 EQ5 and 130P-DS, guided with PHD2 & 50mm finder/guider EOS 1000d and MPCC Mk 4 + Cheap LP filter Old: (GIMP) New: (StarTools--Still a lot of work needed) John
  4. A lucky 4 day stretch of clear cold skies Welford Observatory springs into life for one of the only times this season The forecast in the run up to the 9th of February was promising clear skies but frankly I didn't pay much attention to it as the weather has been so changeable this winter. The forecast was right though and I managed to not only get many hours in on the 9th but also the 12th, 13th and 15th. The good weather was not the only surprise though. I haven't imaged the Great Nebula in Orion since 2012 as I remembered it being very difficult to track from my observatory as it moved along the very edge of the southern wall at the limit of my pier/scope configuration. Also, in 2012 I shot it with a one shot colour camera making life very easy. If I were to image it again I'd be using my ASI1600MM with the need to capture luminance, red, green and blue channels - and if I was very ambitious - H-alpha as well. It turned out I was feeling very ambitious. And it worked. I think I've captured my best astrophoto to date. Also, I pushed my processing skills (limited as they are) to include the H-alpha in both the luminance and red channels. I'm finding Pixinsight so much easier to use than other programs I've tried, mostly because the standard approach to most of the processes takes the guess work out of some of the more creative damage I can do to the image. :-) Also, the observatory was ticking over perfectly with very few errors made by me in re-configuring it each night for the next round of imaging. And so here are the results of one of my most enjoyable series of evenings in the observatory. Details Object name The Great Nebula in Orion Object ID M42 Date(s) 9, 12, 13 and 15 February, 2018 Telescope Teleskop Service 65mm Camera ASI1600MM Luminance 60*1min = 60min Red 25*2min = 50min Green 25*2min = 50min Blue 24*2min = 48min Ha 19*5min = 95min Oiii 0 Sii 0 Total time 5.05hrs Frames 0 Processing PixInsight / Bias, Flats, Darks / Ha to Lum / Ha to red channel / LHaRHaGB / Notes I waited this entire winter for an opportunity to get back into the observatory to do some imaging. The weather and my schedule have been appalling. I guess I can really stop saying that now as it’s always the case…. I didn’t expect to image this object – the last time I did was the 14th of January, 2012. It’s very low to the top of my observatory wall and imaging it always seems unlikely. But on this occasion, I persevered over the few clear nights we had and managed to capture 5 hours of data in H-alpha, red, green and blue channels. This is the most data I’ve captured on an object and it paid off. I’ve processed this image combing H-alpha with both the luminance and red channels – then recombining them all for the finished shot. I may try re-processing in different combinations but this certainly seems to have worked ok. NGC 2244 Details Object name The Rosette Nebula Object ID NGC 2244 Date(s) 9, 13 February, 2018 Telescope 65mm Camera ASI1600MM Luminance 0 Red 0 Green 0 Blue 0 Ha 15*5 min = 75 min Oiii 4*5 min = 20 min Sii 8*5 min = 40 min Total time 2.25 hr Frames 0 Processing PixInsight / Bias, Flats, Darks / Notes Not enough data to make this a good image – but it’s a start and all the weather would allow for this season. M44 Details Object name The Beehive Cluster Object ID M44 Date(s) 9 February, 2018 Telescope Teleskop Service 65mm astrograph Camera ASI1600MM Luminance 0 Red 25 x 2 min = 50 min Green 19 x 2 min = 38 min Blue 19 x 2 min = 38 min Ha 0 Oiii 0 Sii 0 Total time 2.1 hrs Frames 0 Processing PixInsight / Bias, Flats, Darks Notes The second of the objects I imaged during this session. The Beehive cluster is the first object I (accidently) observed while trying to find Saturn out on the downs one night back in 2002 when I took up this hobby again. I remember being absolutely stunned by the sight of all these stars blazing in such a small patch of sky. The scope I was using had been bought from a work colleague for £50 (I later found out that it was considered ..”toy grade” LOL!) but it was good enough to provide decent images of brighter objects such as this one. I hope the rest of you were able to take advantage of what was a great clear spell this winter :-) David
  5. This is a cheeky single 2 minute exposure of M42 taken from the Ballycroy international dark sky site in Co. Mayo in Ireland. I had intended to take a lot more data but that part of the sky was quite cloudy so I moved on. By the time it cleared I felt that M42 was a bit low. Also, M42 is done to death. :-) The corner issue is just due to badly calibrated flats. Can we turn off the city lights now please? Barry
  6. AngryDonkey

    Orion Nebula M42 / Running Man M43

    From the album: Mike's Images

    Orion Nebula M42 / Running Man M43
  7. Just thought I would share my first DSO images I took of the Orion Nebula. Not great but better than I expected them to turn out given I had never taken this kind of picture before, and it was completely in the moment without any prep. I took these on my Canon 60D with a Canon 18-200mm lens. F3.5 apeture, 1.5 second exposure. The first image was at 1600 ISO, the second at 3200. The first image has a bit more fine detail, at the cost of losing how big the nebula is and some of the color. The second has a lot more color and shows more of the nebula, but a lot of the detail is lost in the brighter area in the center. Once the weather is nicer I definitely want to have another go at it properly, and take multiple exposures and dark frames to stack them properly.
  8. 9th/10th November 2015 Equipment: 80x500mm refractor Time: 22:46 - 00:40 47 Tucanae: showed a fuzzy patch with a distinctly denser/brighter core through a 40mm eyepiece (13X magnified). The 11mm (45X) eyepiece started to show granulation through out the globular cluster. The view was quite faint but noticeable and distinct. The very obviously brighter core gradually became fainter and more disperse toward the edges of the globular disc. The edges were noticibly irregular. NGC265 in Hydrus, dense star field just above beta Hydrus near east of 47 Tucanae. Heaps of faint stars but no nebulosity. The orange star that reminded me of the Sagittarius supernova during last binocular observation is in constellation Reticulum, quite possibly alpha reticulum, right place and brightness, note that gamma reticulum seems orange on star maps. Cluster in Sirius that I spotted last time I was observing is M41. A open cluster of stars, quite sparse and spread out cluster. Easily visible in binoculars and the 80mm refractor. The Pleiades are looking awesome as usual, about a hundred stars visible, and the whole constellation visible in the 40mm eyepiece FOV. This is one object that I usually spend a fair bit of time observing. This view is one that needs the least possible magnification with the highest possible light gathering power, so the 80mm scope at 13X through the 40mm eyepiece is ideal... Atleast in my tool box. Orion Nebula shows the whole Orion's sword in the 40mm eyepiece at 13X. This is definitely a view worth spending a bit of time observing. The running man nebula is very faintly showing through, but not anywhere near as obvious as the Orion Nebula. Increasing the power to 45X with the 11mm TV Nagler reveals more nebulosity and the trapezium is very obvious. Filters: Celestron OIII and Lumicon UHC filters seem to cut away too much light in the 80mm scope. There is more contrast through both but I preferred the view without either filter. The Celestron UHC/LPR and Seben CLR filters did a better job in showing more nebulosity as well as increasing the contrast. Both had their advantages so it's hard to say which did a better job, but if I had to choose, I'd say the UHC/LPR had slightly the edge on the darker parts of the nebula. The OIII and UHC filters are both too aggressive for the 80mm. Equipment: NexStar 8SE Time: 02:00 - 03:40 From approximately 2am, when the 80mm frac was setup to image the Orion's Sword, I wanted to compare the view in the 8SE to the 80mm refractor. First I framed up on to the Orion Nebula, without the UHC filter the nebula glow was very obvious and the stars with in and around, such as the trapezium, were bright. Looking through the 40mm and 11mm eyepieces with and without the UHC filter, the nebulosity was quite obvious, the "moustache" and the fishes mouth were obvious with detail visible that was not visible in the refractor as expected. That said I do remember a more detailed view of the Orion Nebula in the past... Especially using the UHC filter. The second object I located was the globular 47Tucanae. In the 40mm eyepiece the globular did not look any better than in the refractor so I replaced the eye piece to the 11mm Nagler. In the Nagler the globular was still quite dim but I did start to see granulation within the globular, but I was expecting to see the globular as a brighter object than what I'm seeing. I put the reason to seeing such dim views in the globular and the Orion Nebula to the fact that I had to keep adjusting the autoguide star on the laptop screen, even though the screen was turned down to minimum, I figured that the white light was still bright enough to ruin my night adaption.... Then I thought, have a look at the corrector plate... Sure enough, nearly totally covered in dew. Oh well the observing part of the night is over, next time I'll have to run a RCA cable from the CGEM dew strap controller to the 8SE on alt-az mount and try these objects again. Hopefully in the next week there will be at least one more clear night before the moon lights things up again. MG
  9. As it has been a number of years since i have managed to get out under the stars (having had two small children in between) i thought i would use an old friend to get back into deep sky. M42, about 12x6 mins lights, darks to match. Dss and PS to tweek. It was such a nice feeling to get out there, a dream session where it all worked as it was supposed to and not a cloud to be seen. Had a look at Venus as well but my views of Mars and Neptune from here were pretty poor. nice to be back!
  10. It's been ages - well the best part of a year since I sold my trusty OSC self-guiding SBIG camera and replaced it with a Mono (via Ian King) due to my increasing light pollution... I've become a part time beta tester in the process for Canada based Apple Mac astro software developer - Microprojects, whilst trying to sort out the new STF8300M imaging camera and the 'dog' of an ST-i guide camera (it would be nice if SBIG pulled their finger out and sorted new drivers considering it's advertised as Mac compatible - so 'be warned' any Mac purchasers at the moment as the thing does not appear to like PHD either), but, we are nearly there (well I have an image at least - although I very nearly jacked the imaging game in to go back to visual), as I have spent ages 'garage' testing software whilst everyone else has been imaging and improving...... most depressing ;-( Still the odd issue with the STF locking whilst downloading an exposure and more annoyingly, on/off guiding due to 'corrupting' guide stars (ST-i) we think due to fluctuating noise levels playing havoc with the auto dark subtraction....or it could all be driver related(!), but an image at last to show you! Still a work in progress - need more exposures and some shorter ones for the core - plus brushing up my processing skill again! Not sure if I'll go for RGB colour or try a full narrowband image at some stage.... At the moment though I may just stick with Ha and try to build up a decent 'core' library to add to in the future - and resolve the last software issues.... Details: M42 Orion Nebula - Ha, 11th Nov 2012 WIP - still to get 'core' data. Only 15 x 600 sec exposures Takahashi FSQ106-ED + dedicated F/R @f/3.6 SBIG STF8300M + Baader 7nm Ha filter. Guided with SBIG ST-i via ST-80 via MicroProjects Equinox Image (beta test) 'Scopebuggied' Takahashi EM400 mount - controlled via MicroProjects Equinox Pro (all on a 17" MacBook Pro) Preprocessed (Darks and Flat frames), aligned and stacked in Nebulosity 3. Processed in Adobe Photoshop CS5 Would appear that I'm not the only one who has suffered camera, mount, computer issues.... stupid game this imaging! Thanks for looking....
  11. xtreemchaos

    orions sword mk2

    reprocessed. i split the channels and ajusted on the own, as advise by MG. i think its looking better its got more detail now. feel free to have a play. taken with ed80, sony alpha. 20x 25 second shots iso 800. thanks for looking clear skys charl.
  12. Had a few hours of clear sky on Tuesday so managed to get some data on M42. 20x 2 seconds, 125 x 20 seconds and 6 * 60 seconds before the mist rolled in. (sigh) Captured with Kit in sig, stacked in Nebulosity and then combined in Gimp with the "Exposure Blend" Plug-in to HDR the images together. First time I used this plugin and was impressed on how easy it was to use. It needs some flats to get rid of the gradient but thats for another day when its not too cold. Cheers John
  13. First, I'd like to say that I'm in wet diapers as far as imaging goes, just making a few baby steps. Tonight was clear and not as freezing cold as has been recently, so I took the kit into the barnyard where I have a fairly decent sky. I just added Bob's Knobs to my Edge HD 8", and had done an indoor collimation; I wanted to fine tune it outside as one goal of observing tonight. Another goal was trying out my new WO GT81 on the Moon, I haven't had the opportunity to use it for lunar because of recent weather.....and no Moon. So, one of the last things tonight was to swing over to M42 after the Moon got too low to observe. I used the frac to observe wide-field for a while, then put the Edge on the mount; to check collimation I swung over to Castor, and clearly split it with a 25mm Plossl. Then I went to Capella, defocused so I could get the 'donut', and it was so perfect as I closed it down while focusing I left the collimation as it was. Skewing over to M42, I started with a 25mm Plossl in a 2" diagonal and worked my way up, ending with my 2" 2.5x Luminos barlow and a 13mm Ultima EP, giving me 385X. Visually, I could split 'E' and 'F' in the Trapezium, so I thought I'd see if I could get an image through the EP with my DSLR, since the Ultima is threaded for a T-ring. This is a single image, 2.5 seconds at ISO 6400. Less exposure did not bring out 'E' any better, and 'F' is showing as a bulge in its companion. More exposure hid both as the Trapezium stars were too bright.
  14. Hello, I hope you are all having a good Christmas and will have a Happy New Year. This is my first official image from my shifted and rebuilt observatory that I am now sharing with my brother in a much darker location. To get to this point has taken nearly two years, so even though the image has some registration issues and camera artifacts, I am happy to be at this stage. It is also 3and 1/2 years since I really processed a full image. I started an M17 image which will have to be finished next year due to the bad weather we have had. Onwards and upwards! Anyway, I hope you find something to like about this image of M42. Large image and technical details can be found at https://secure2.pbase.com/grahammeyer/image/166759195/original.jpg Thanks for looking! Graham.
  15. ...It's enought to celebrate, heck it's enough to get drunk I say...! Yesterday it's was clear and so I had to make the yearly M42 image, it's already late for it as it's getting behind the roofs for me but even so i managed to get 7x10 min. subs and another 10x30 secs for the core, cooked it all an there you go, a clean and detailled Orion nebula The image is resized to 50% resolution but still there's plenty of details to take in, check out the trapezium fully resolved, in the full resolution image there's even E and a hint of the F component there at only 800 mm f/l...cool https://www.flickr.c...eposted-public/ Hope you enjoy, Cheers, P.S: Thanks to Jerry Lodriguss for the tutorial in PS, I allways get at it when processing images of M42...as I forget how to do it every time
  16. I had another good night recovering my imaging skills on 28th with M42 as the subject. Equinox 80, Canon 1000D, 20 frames each from 2sec to 300sec at ISO 800. I used the HDR tool in PixInsight using this tutorial. I like it. I am not sure I believe all that brown stuff near the Running Man, but this is definitely the best image I have created of M42. Not what it looks like through the eyepiece, but revealing a lot more detail than previous attempts. What does everyone else think? Good, bad, meh? I have kept the processing to the minimum steps so it is possible I might be able to do more with this, but happy the way it is. Happy New Year all!
  17. Hello all! I acquired yesterday the third hydrogen panel of this area. I might add 2 more below, in landscape. We shall see how the weather plays. 2.5h each panel in 300s subs at unity gain. And some 30s exposures for the core. Camera is ASI1600MMC on the Canon 300 F4 L lens, cooled to -15C. And first successful try with the Astro Pixel Processor, though, the stacks were made with DSS. I just purchased APP and I didn't restack them. I'm not sure if I should add more hydrogen data or move to oxygen and then LRGB. I still have time to decide until Feb-March. More details: http://www.astrobin.com/317154/ Comments welcomed. Clear skies, Alex
  18. From the album: Wide-field (not barn-door)

    Alternately developped version where some gamma stretching was used rather than brightness stretching. Hence most saturated values are pale or grey/white. Shows a bit more contrast though.

    © Fabien COUTANT

  19. Hello all, I'm starting a new thread for this since the hydrogen data is rather old and it has been reprocessed since I posted a while ago. Now I finished the acquisition of O[III] too. Or sort of, I planned more, but clear nights were so rare that I decided to process what I had. The image was done in "3 pass" data over the area. That means that I acquired 3 sets of images covering the same area and combined in the end. First 2 in hydrogen, the last in oxygen. First set consisted of 3 panels in portrait mode for the top area and then I wanted to extend them to the bottom so I shot another 2 panels in landscape mode. I knew that I could get a higher SNR so I shot 4 more panels in landscape mode. Each panel consists of 30-31 subs, each sub 300s. Then I started the acquisition of O[III] which needed light pollution and moonlight conditions than the Ha required. Top panels contain 30 subs, but the bottom ones, only 20-22. Each 300s. Luckily there's not much oxygen in that area so I could get away with less subs. I also took some 10s-30s frames for M42's core. For the framing, I created a quick mosaic of the same area. For the final alignment I shot an image somewhere close to the center of this area. I can't remember if the initial register was done in APP or Registar - for the first pass, but for the next ones it was done in Registar. I removed the gradient manually in each stack with APP and then I created the mosaics for each pass same with APP. The 2 Ha passes I then blended manually 50%-50%. For the processing, I tried to stretch both Ha and O[III] to the same levels and I combined them manually in some 60-40/70-30 ratio for a layer which I used as lum. The colours were Ha - reddish, O[III] - cyan-blue. I spent a lot of time trying to control the big stars, the O[III] filter has poor coatings and, together with the ASI1600s non AR coated sensor, I had much brighter reflections than with the Ha filter. And I tried to raise the oxygen levels selectively around the flame and NGC2023, but the flame is really dim in O[III]. Don't know what other details in the story I forgot, this project drained me a lot of energy. Camera was ASI1600MMC, cooled to -15C for the first pass and to -25C for the ones following. Gain 139. Canon 300 F4 L IS lens with a lot of aberrations towards the edges. AZ-EQ5 mount guided with a 200mm lens and an ASI120MM, with varying seeing. 1.5-2.5" RMS guiding error usually. APT for capture, PHD2 for guiding, Registar for each night initial alignment. DSS, APP, Registar, StarTools, GIMP for processing. I started shooting early in October and I wanted much more, but Orion already becomes less and less visible from where I image and hides beyond the house. Ah, yes, I image from a yellow-pink light polluted area. Thanks for reading, thanks for looking! Comments and suggestions are appreciated. Links to original image and acquisition details: https://drive.google.com/open?id=17tr8lqagQAJg8maojtHZPbM-f67gSBTv https://drive.google.com/open?id=12gjGEgeR7FxR1Tow0e64JczeeUIqKojK https://www.astrobin.com/330284/ Alex
  20. xtreemchaos

    M42 orion neb

    M42 orion neb. woke at 4.45am got a qwick snap before the sun rose, 5x10sec staxed, didnt have time to sort tracking because it was slipping out of view of my obsy window so could only get 10 sec subs and out of 24 5 where only useable. taken with ed80 and sony alpha iso 800, staxed with Regi. thanks for looking clear skys charl.
  21. Vicky050373

    Orion Constellation 14.01.2016

    From the album: Stars and Constellations

    Taken using Canon 100D on Skywatcher Star Adventurer - 55mm lens - single 4 minute exposure at ISO 800 You can clearly see M42 The Orion Nebula within "the sword", and there is a hint of The Flame Nebula and The Horsehead Nebula around the bottom left star of "the belt" Taken during a trip out to The Dales on Thursday night at a nice dark site between Kettlewell and Hawes

    © Vicky050373

  22. Davide Simonetti

    Orion & Running Man Nebulae

    First light for my new Sky-Watcher Explorer-150PDS (a good way to start the new year). This scope is much better suited to Deep Sky astrophotography with its f/5 aperture and with its 150mm mirror and a nice, wide 750mm focal length. The night was spent mostly getting to know the new beast (working out balance, focus, and guiding) so a relatively easy target was chosen for a test image and our old friend M42, the Orion Nebula was the obvious choice (also it was a full moon, a bit windy, and not the clearest of skies). It's going to take a bit of getting used to but I'm happy to report that it does exactly what it's supposed to do. Exposures can be much shorter now which makes guiding issues less frequent. There are still a few wrinkles to iron out (like how to use a 1.25 inch light pollution filter and maintain prime focus) but on the whole it makes imaging much less laborious. I expect images to improve greatly over the next few months as it becomes more familiar. 48 x 20 second exposures at 400 ISO (16 minutes integration) 64 x dark frames 24 x flat frames 21 x bias/offset frames (subtracted from flat frames only) Captured with APT Guided with PHD2 Processed in Nebulosity and Photoshop Equipment: Sky-Watcher Explorer-150PDS Skywatcher EQ5 Mount Orion 50mm Mini Guide Scope ZWO ASI120 MC imaging and guiding camera Canon 700D DSLR
  23. mitchelln

    M42 130301 4

    From the album: Galaxies

    M42, aligned, HDR

    © Neill Mitchell

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