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Found 153 results

  1. This is a recent edit of data I collected back in January. Image is taken with a Canon 450Da and Canon EF L 70-200mm f/2.8 lens sitting on a Sky-Watcher Star Adventurer. It’s quite a large crop from a 200mm frame. 25 x 3 min guided subs. Stacked in SiriL and processed in Photoshop. Image taken in Northumberland under Bortle 3 skies.
  2. Looking for the 2" low profile extension tube that is provided with most of the skywatcher scopes. I have a used 190MN that didn't come with the extension tube and need it to get accurate focus. I believe Orion scopes may have one too.
  3. For deep sky observations, can you make suggestion which will be more fitted with my behavior: mobility is not a big concern as a least 11" aperture is must whereupon computerized stuff is no good choice for me.
  4. Like the lunatic that I am, I decided to get the scope out last week during that storm that was passing through. The skies were clear and there was no moon about, so I figured why not! Only problem was the 17-20 mph winds, lol. I got 2 hrs of subs but had to throw away half of them due to guiding problems more so than the wind, amazingly. This was the 2nd time in a row i'd had Dec guiding problems, and that's after about 2 years of not having a single problem guiding. After the 1st hr of wasted subs, I turned off Fast Switching in Dec and chose to only Dither in RA, and the Dec problems mostly went away, at least to allow me to capture 1 hr of 'still dodgy but just about useable' subs. Once M42 disappeared behind the neighbour's roof, I then re-calibrated on the Celestial Equator (Dec 0) and when I switched to the Pinwheel Galaxy I was able to guide as normal again (with Fast Switching and Dithering in both RA and Dec both turned on again) and didn't lose any subs, despite the wind, so I've decided that from now on I won't be calibrating at the target itself, i'm always going to do it at Dec 0. I decided to throw this in with another 1 hr of subs (plus 10 x 30s for the core) that I took back in Jan 2017 (has it really been that long?!). That hr also had issues, with some weird streaking in the lower left that I could never work out what caused it. The D5300 hadn't been modified at that stage either. So I fired it all in to APP and decided to stack it anyway, and give it a quick process. Then chose to crank it up to 11 on the colour front, just for laughs. It won't be going on the wall anytime soon, lol, but I suppose it came out a bit better than I was expecting, all things considered. 20 x 360s with an IDAS-D1 D5300, 80ED, HEQ5-Pro. Stacked in APP, processed in PS. CS! edit - I forgot to downscale it - so no pixel peeping allowed ?
  5. heyyyyy its meeeee, kronosss and today there is a full moon(i missed out on the eclipse because of clouds... huh i guess i gotta wait another 19 years...)and i went out in the b ackyard with my 3" reflector telescope the celestron firstscope! The seeing was kinda bad... the full moon had less detail than the quarter.... anyway i figured i could see something else then i turned left and i saw orion(book-pun -intended) and the stars were quite faint(bad seeing full moon and light pollution.) i tried locating the orion nebula, after some time i stumbled across a small extremely faint smudge just barely distinguishable, then i turned and zoomed in,(75x) i saw 2 small kind of blurry spots of light (focusing wasnt great andi have the worst 4mm eyepiece in history...) with a very faint dark grey light around them keep in mind i saw that light when not looking directly at the nebula(read that it makes light appear brighter somewhere, it works lol) sooo is what i am seeing indeed it? or are my eyes playing tricks on me? Cheers Kronos
  6. Update: 3rd June Re-processed to remove slight magenta tint caused by the non-uniform removal of light pollution by the DBE process ( it was being fooled by the very bright image centre ). The globular star cluster Omega Centauri ( NGC 5139 ) in Centaurus ( please click / tap on image to see larger and sharper ) A full size image can be found here. original below ..... A newly captured ( May 2018 ) image of the great southern globular star cluster, Omega Centauri ( NGC 5139 ) Omega Centauri ( NGC 5139 ) in Centaurus - ( please click / tap image to see larger and sharper ) A full size ( ~ 6000 x 4000 ) image can be found here ....... This image is an attempt to look deeply into the mighty Omega Centauri star cluster and, by using HDR techniques, record as many of its faint members as possible whilst capturing and bringing out the colours of the stars, including in the core. Image details: Resolution ........ 0.586 arcsec/px ( full size image ) Rotation .......... 0.00 deg ( up is North ) Focal ............. 1375.99 mm Pixel size ........ 3.91 um Field of view ..... 58' 20.9" x 38' 55.1" Image center ...... RA: 13 26 45.065 Dec: -47 28 27.26 Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ). Corrector: ASA 2" Coma Corrector Quattro 1.175x. Effective Focal Length / Aperture : 1470mm f4.7 Mount: Skywatcher Eq8 Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2 Camera: Nikon D5300 (unmodified) (sensor 23.5 x 15.6mm, 6016x4016 3.9um pixels)\ Location: Blue Mountains, Australia Moderate light pollution ( pale green zone on darksitefinder.com map ) Capture ( May 2018 ) 8 sets of sub-images with exposure duration for each set doubling ( 2s to 240s ) all at ISO 250. Processing: Calibration: master bias, master flat and master dark Integration in 8 sets HDR combination Pixinsight May 2018
  7. Hi Guys, I thought I would share with you my first DSO taken with my new Orion 8" Ritchey Chretien F8 Telescope. The frame is made up of 12 x 4min shots, no light or dark frames, using my Sony A7Rii camera. The camera had the long exposure noise reduction switched on, which does help to reduce the total number of stars captured by the camera, as the Sony A7Rii does tend to overdo the number of stars captured. The telescope was mounted on my trusty skywatcher NEQ6 mount and the guiding was via PHD 'of course' via my skywatcher ED50 guide scope. The shots were taken from my back garden in Stowmarket, Suffolk where I believe I am a Bortie 4 location, so the skies are mostly dark, with just a little light pollution from the main town, no filters used. My normal telescope is a Skywatcher ED100 Pro Esprit F5.5, which is an incredibly sharp scope, but with a wide 550mm field of view, great for capturing the whole of Andromeda but a struggle with smaller images like the Iris Nebula. I will say the Orion RC scope did need to be collimated out of the box, which was a little disappointing, and it was not just a little out of collimation, it was a long way out, but with the use of a collimating tool, I soon had it dialled in. First impressions of the Orion Ritchey Chretien 8" Telescope are fair, not super impressed, as it is nowhere near as sharp as my ED100 Esprit, but then this is to be expected based on price and telescope type, however, the pictures it has produced are pretty good, if you downscale the full 42MP from the Sony A7Rii camera, as can be seen in this picture. I purchased this 8" Orion Ritchey Chretien OTA mainly for Planetary work, but as yet I have not had a chance to 'get onto' a planet, fingers crossed some clear nights will arrive soon, so I can try. I welcome comments, many thanks Jamie
  8. Dear all, After tinkering around several nights, i finally got around getting the Orion starshoot Autoguider (also called SSAG) into focus using a small 50mm guidescope. I want to share the info as i have received a ton of great advice from SGL users, and maybe there's a noob like me out there with the same problem? The biggest problem for me was that i expected the combination of the 50mm guidescope and the SSAG to be balanced to each other... but they are not. In other words, if you completey insert the SSAG into the guidescope, you will not be able to achieve focus. The distance between the foremost frontend of the guidscope to the back end of the SSAG should be around 21.8 cm. If you take a look at the photo below, you can see that the SSAG is not completely inserted into the guidescope; in my case, there is a space of 1.25 cm between the SSAG and the inmost position and about the frontend of the scope is about 0.3cm screwed out. These positions should get you very close to the optimal focus position. Getting the driver and installing PHD2 is straight forward. I suggest setting camera gain to 95, and exposure to auto. For final focusing, fire up PHD2 and select a star- PHD2 will show you the SNR (signal to noise ratio- the higher it is, the better). The do quarter turns of the scope's front lens, always checking the SNR after each turn, repeating the process until you reach the point of maximum SNR. Congratulations- you are on focus! To make all this more repeatable, you could get T2 adapters and adjustment rings so that you need no guessing around where the focus point is. That is left as an exercise to the reader
  9. HI All, I have an entertaining video to share with you which is perfect for those just starting out and wanting to taste a bit of astrophotography without spending a lot of money. I image from London and managed to get a pretty good shot of Orion for just £150. This video runs through where I bought the equipment, why I bought it and how I used it to capture a Orion and some of the trials and tribulations I had to deal with on the way. Any questions please ask! Enjoy! FYI I shot this last year but with Orion now beginning to rise over the rooftops of London I thought this would be a good time to share it.
  10. Can anyone identify this Orion camera and perhaps provide me with a digital copy (or link) for the user guide? I got this and it has no part number or any unique identifier to help me locate the documentation. Any help would be greatly appreciated.
  11. Yeah, back again (sorry). But having sorted out my problems with my star halos caused by the settings in DSS, I have now had a go at combining two images to keep the core from burning out. Not going to win any awards but I am quite happy with it as my "first" proper Orion shot. I'm proud enough of it I sent a copy to my mum! Essentially: 27 of 29 60s ISO1600 shots stacked for the Nebula 30 of 30 20s ISO400 shots stacked for the Core Stacked in DSS with minimum processing to match the output TIF files. TIF Files opened as layers in GIMP, aligned and a layer mask attached to the top Nebula Layer. Used the paintbrush to blend the two layers and saved as one after a bit more processing in GIMP. I think the ISO1600 shots over-cooked it a bit, so there is some noise in the darker areas, but I'll just go back to ISO800 for the next ones. First image shows the output from the Nebula stack, complete with burnt out core And then the second image after blending the core As I said, it won't win any awards, but I am happy that I am making some progress. Next to try and eke out a little more for the subs and try and get them up to 90s and will keep trying to get more detail out of the images. So to everyone starting out like me.....keep at it, it is amazing how quickly you can progress in your knowledge of this astrophotography lark, so don't give up. Obviously the more you learn and the better you get, the more it is going to cost you, but the nights of banging your head against a brick wall of clouds, rain, bad subs, poor processing and general frustration are worth it when you finally get a picture that you like. And thank you for everyone for humouring and helping me this far. I'm bound to be back again and again for more questions but, hopefully, I'll be able to start helping others as well! Clear Skies!
  12. Conditions have been very poor down in Sydney for the last month (rain, clouds or 'darn' moon every night ) so no new images but at least I have plenty of time for lots of reprocessing ... This one was captured back at the beginning of the year and I'm still playing with it. Here I have been trying to get to grips with the HDR composition function in PixInsight. It is built up from four sets of around 20 images each at 4sec, 8sec, 30sec and 120sec all at ISO800 with my unmodified Nikon D5300. And this is the previous attempt. I think I prefer the composition, colours and contrast of the new version.
  13. 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

  14. Nadine2704

    Orion Nebula

    From the album: Astrophotography

    Taken with my iOptron Skytracker and Canon 70d with 300mm lens.
  15. 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

  16. From the album: Jon's images

    Milky Way Winter Triangle
  17. glowingturnip

    Orion Nebula

    From the album: fish

  18. 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
  19. My wife Janie is very heavily into cross-stitch and produces beautiful work from photographs (normally dogs!) using patterns that I produce for her using special software. Her latest project is from one of my deep sky images and one of her favourite objects, the Orion Nebula. The 'resolution' is a pretty appalling 216 x 216 stitches but when hung on the wall and viewed from about four feet away, it will look like a photograph. As usual, I have produced a mock-up for her showing literally every stitch that will be sewn using 82 different silk colours! For the fun of it I will post up WIP images but here is the mock-up for starters (the image might need to be clicked on to show the stitches rather than just an interference pattern!):-
  20. Update 16th June: I could not wait to tell people that I was just notified that my image of Omega Centauri will be published as a future NASA's Astronomy Picture of the Day ( APOD ) - my first ever I will update the thread when they publish. ................................. A deep look at Omega Centauri ( NGC 5139 ) This image is an attempt to look deeply into the the Omega Centauri globular cluster by using HDR techniques to record as many faint stars as I can whilst retaining colour and detail in the bright stars, including at the core ... ............. Reprocessed to bring out more faint stars and to produce a smother transition between brightness levels. New version ( 12 June 2017 ): Omega Centauri ( NGC 5129 ) ( please click / tap on image to see lager and sharper ) .......... Old version: Omega Centauri ( NGC 5129 ) ( please click / tap on image to see full size and sharper ) Image details: from www.nova.astrometry.net: Size: 58.6 x 39 arcmins, Centre: 13h 26 min 50.4 sec, -47deg 28' 39.1''. Orientation: up is -89.9 East of North ( ie. E^ N> ). Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ). Corrector: ASA 2" Coma Corrector Quattro 1.175x. Effective Focal Length / Aperture : 1410mm f4.7. Mount: Skywatcher AZ Eq6 GT. Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2 . Camera: Nikon D5300 (unmodified) (sensor 23.5 x 15.6mm, 6016x4016 3.9um pixels). No filter Long Exposure noise reduction off Location:. Blue Mountains, Australia. Moderate light pollution ( pale green zone on darksitefinder.com map ). Capture: 9 sets of sub-images with exposure duration for each set doubling ( 1s to 240s ) all at ISO800. Processing:. Calibration: master bias, master flat and no darks. Integration in 9 sets. HDR combination. Pixinsight May 2017
  21. Greetings to you all, I am begging some expertise and assistance (again!!) I managed to get 35 minutes on orion last night and have successfully stacked in DSS. My issues seem to start in processing. I was hoping to see a 'flame' coloured flame nebula but it stubbornly stays red which may simply be down to not enough time at the camera....dew was the issue (late autumn here) and i haven't figured out how to process images from different nights imaging) Anyhow, i have posted here my attempt at processing (gimp) and also the original DSS file in the hope that some of you may be able to apply your expertise and see if you can't make it look more pleasing......and also help me by explaining how you did it! Also, I would really like to know where you think I've gone wrong on my processing.....have I over/under cooked it etc. As ever I am most grateful for any assistance.......processing is a tough nut to crack! Thanks in advance all of you and below are the technicals. Seeing was a bit misty and orion was low to the western horizon. yes, its upside down.....i'm down under! canon 40D modified, 135mm, f5, ISO 1600 skywatcher star adventurer 18x120seconds lights 18x120seconds darks 20x8000/sec bias stacked in DSS Ok.....strike this one.....after spending an hour and a half uploading 61mb files.....it's somehow totally failed to post them permission to swear loudly !!
  22. I've had issues but, I stayed the course and got them taken care of , now to get a night of good alignment only 8 seconds @-15 due to alignment issue of stubbling over the tipod leg. The zwo 174MM cooled is my new workhoarse for it all and I'm still learning the camera capabilities and trying to find the settings for " full well " so I don't under or over sample to make every photon count.
  23. Captured back in early October, I didn't pay quite enough attention to the framing - I should have moved the camera up and right a bit and I could have gotten the whole belt in the picture... the headline stuff is in there though, M42/M43, Horsehead and Flame etc 10x 200 second subs taken with a modified Canon 650D through a Borg 55 f/3.6 (focal length 200mm). There's a load of red stuff in there that needs more exposures (or slightly longer ones) to show more off so I will redo this one and frame it correctly... or do a mosaic of Orion or... well, it'll depend on the number (or lack) of clear nights!! Unfortunately there are haloes on Alnitak and Alnilam, I may have a solution for the next time I cover this area Processing wise I'm going to have to sort out shorter exposures for the Orion Nebula and longer for the rest... James
  24. This is the result of a stack of images of the core of M42 that I took in February. I'm a new to DSO AP and not experienced at all! I have tried to do all sorts of things with the resulting tiff file from DSS (10 x 30 sec lights + 10 x 30 sec Darks + 5 Bias frames using an unmodified Nikon D7200 at ISO 800 on a Starwave ED80). I'm now being patient and slow and followed a PI workflow and I did a little PS to further reduce noise. Thought I'd risk showing it and hope someone can comment on how to improve my new technique in the future. Thanks for looking, R:)
  25. Congrats Olly and Tom for this stunning image of Orion region with more than 400h exposure!!! Awarded by today's EAPOD
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