Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_comet_46p.thumb.jpg.9baae12eeb853c863abc6d2cf3df5968.jpg

Search the Community

Showing results for tags 'm42'.



More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • Welcome
    • Welcome
  • Beginners
    • Getting Started General Help and Advice
    • Getting Started Equipment Help and Advice
    • Getting Started With Observing
    • Getting Started With Imaging
  • Community
    • Official SGL Announcements and Events
    • SGL Challenges and Competitions
    • SGL Star Parties
    • Star Parties & Astro Events
    • Celestial Events Heads Up
    • The Astro Lounge
  • Retailers
    • Sponsor Announcements and Offers
    • FLO Clearance Offers
    • Supplier Reviews
  • Astro Classifieds
    • For Sale / Swap
    • Wanted
  • Equipment
  • Observing
  • Video Astronomy
  • Imaging
  • Science
  • WADAS's WADAS Discussion Forum
  • Beaufort Club's Topics
  • Swindon Stargazers Club's Topics
  • East Midlands Stargazers''s Topics
  • Central Scotland Astro's Topics
  • SGL Cumbrian Skies's Topics
  • Herts, Beds and Bucks Group's Topics
  • SGL East Anglian Group's Topics
  • South Leicester Observers's Topics
  • South Wales Group's Topics
  • SGL Surrey Observers's Topics
  • South Yorkshire Stargazers's Topics
  • Yorkshire Astronomers's Topics
  • Devon and Cornwall's Topics
  • West Midlands's Topics
  • Essex Cloud Dodgers's Topics
  • Essex Cloud Dodgers's New equipment
  • NLO and Planetarium's Topics
  • Astronomical Society of Edinburgh's Discussion
  • Leicester Astronomical Society's Topics
  • Dorset Stargazers's Topics
  • Hairy Stars Club (Comets)'s Tutorials and Guides
  • Hairy Stars Club (Comets)'s General Discussion
  • Hairy Stars Club (Comets)'s Observing Campaigns
  • Hairy Stars Club (Comets)'s Analysis results
  • Hairy Stars Club (Comets)'s Useful Links
  • Pixinsight Users Club's Pixinsight Discussion Forum

Calendars

  • Astro TV
  • Celestial Events
  • SGL Calendar
  • Astro Society Events
  • Star Parties
  • WADAS's Events
  • Beaufort Club's Events
  • Astronomical Society of Edinburgh's Events
  • Leicester Astronomical Society's Events
  • Dorset Stargazers's Events

Blogs

There are no results to display.

There are no results to display.


Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


AIM


MSN


Website URL


ICQ


Yahoo


Jabber


Skype


Interests


Location

Found 175 results

  1. 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
  2. From the album: Deep Sky Imaging

    Image of the great Orion Nebula, M42 or NGC 1976, taken in natural color through my 8" SCT at a focal length of 2032mm using an astro modded and (the recently) cooled Canon 40D DSLR. Total exposure time was just 1 hour 21 minutes and 45 seconds, image consists of 15 x 15sec, 12 x 30, 60, 120 and 180 second subs at ISO1600.

    © Mariusz Goralski

  3. Hello Astronomers, Image of the great Orion Nebula, M42 or NGC 1976, taken in natural color through my 8" SCT at a focal length of 2032mm using an astro modded and (the recently) cooled Canon 40D DSLR. Total exposure time was just 1 hour 21 minutes and 45 seconds, image consists of 15 x 15sec, 12 x 30, 60, 120 and 180 second subs at ISO1600. Clear Skies, MG
  4. Christmas Present: Altair GPCAM290C - That and the Brian May 3D Apollo book and the Paul Sutter book, I had a great Christmas. Telescope: Celestron: 9.25 SCT - Retirement present to myself, nice telescope, didn't quite get a perfect focus. Mount: Celestron CGX - Tracks nicely now I've learnt to polar align it. Imaging: SharpCapPro - 10 x Fits, no darks or lights because I lost the usb connection to the mount and it was too late to set it up again! Pre-processing: PIPP - 10 x Tif to de-Bayer the fits Stacking: Registax 6 Processing: Gimp - A quick tweak with curves, levels, colours and hues but I'm still stumbling in the dark really!
  5. This is my first serious attempt at using my basic Sony A7 for AP on a WO-ZS71 mounted on the NEQ6. Individual frames were captured using Sony's own software and that is where I ran into problems - it has a mind of its own! Focusing using a Bahtinov Mask and Live View on the laptop seemed to work pretty well. The software then allowed me to take 9 x 10s and 4 x 30s exposures despite my best efforts to take 20 of each - it was not going to play ball. These 13 images were stacked in DSS without any calibration frames (I took flats but I judged them not fit for purpose and I wasn't too impressed with my Darks either!). ABE was applied in PI along with MLT noise reduction. The image was cloned and the original incrementally stetched with HistogramTransofrmation and the clone with Arcsinh stretch. The two resulting images were then Mask Layered in Photoshop, levels applied and a small amount of additional noise reduction. I think this A7 has some potential providing I can sort the Remote software and get myself some decent calibration frames. All comments and suggestions greatfully received. Thanks for looking. Adrian
  6. Took this last night in a rare beak in the clouds, still a work in progress and the moon was close. it was also a bit of an experiment on how my L pro max filter would help with moonlight, the answer is...quite well actually! the rest of the moon glare was mopped up in astro pixel processor. 55x60s, flats, darks and bad pixel map applied. stacked and processed in APP and final touch up in PS. Still a work in progress and i'll add more data as and when i can
  7. After being sick for what feels like an eternity, followed by two weeks of clouds and wind, i simply could not just let this night go as it was said to be yet another week or two with clouds on the way. With my main scope not quite ready for use yet, i quickly hooked up the QHY5L-II-M to a canon 50mm lens, attached a 7nm Ha filter, and started looking for a decent target. I didn't need to look long before i saw Orion, and then it was set! As the moon is currently 78% lit i must admit i was a bit worried, but i think the end result turned out OK, especially considering the relatively little data of just about 1 hour. Exposure is 13x 300s (and 35x 30s for the core of M42) with the QHY5L-II at gain 12. The lens is a Canon 50mm F/1.4@F/2.8 Darks applied to 300s exposures, but no flats or offset. Stacked in DSS, processed in PS and cropped to 16*9 size.
  8. 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
  9. 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
  10. Been really busy with university applications lately, but after watching Star Gazing Live last night I felt inspired to brush the dust off the scope and get imaging. Didn't get nearly as much exposure as I'd hoped due to mechanical problems, but was very happy with my polar alignment. Almost getting the hang of this stuff! Anyway here it is, my first go at M42, in JPEG form, with some very quick and basic post processing in DSS. Not happy with the clarity of the image, it appears hazy to me? And the core appears kinda burnt out. All feedback appreciated(: Scope: Skywatcher 200P Camera: Sony Alpha A-57 25 lights at ISO 1600 and 30s each. 12mins 30secs exposure time. 28 darks No flats or bias
  11. Hello all, last I night I give a try at Orion Nebula when the clouds were not in the way I live in a fairly light polluted city centre (with a thick orange sky glow) so I decided to buy a Baader UHC-S filter to see if it would help, so this is my first light with the UHC-S and I was chuffed! In my opinion, it's worth every cent! Normally, even when taking a lot of subs, darks and flats I end up with weird gradients, heavy noise, lack of contrast and other annoying artifacts that not even post processing can get rid of, but last night the UHC-S blessed me and with only a bunch of quick subs and darks I've finally got some decent contrast, decent colours and detail ! Again, not an Hubble grade picture and very far from those crazy 100 hours Ha-RGB stacks, but it's my first half-decent DSO image so I'm happy with it (it must have been my lucky night yesterday, as I was lucky also with Jupiter). I think it needs some more post processing as there is a bit more signal and nebulosity to squeeze out. Any comment or advise appreciated! Celestron 80ED (F/7.5) Motorised EQ5 (Rough polar alignment) 2" UHC-S Filter Nikon D7000 20 subs, 20 seconds each, ISO 1600 5 Darks Churned by DSS Squeezed by Adobe Lightroom Thanks for watching!
  12. 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
  13. ...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
  14. 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!
  15. 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.
  16. sketch 17.11.12,gel pen, 3b pencil.becuase of dew issues had to switch between x48 and x66 ,so scale may be a tad out ,(nothing new for though ) its hard sketching when your fingers are numb .
  17. 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
  18. I had a few hours free last night, which remarkably coincided with clear skies, so I had a nice little session from around 8 until 10.30 ish. The moon was an obvious target, and I spent a decent amount of time panning along the terminator enjoying the views. I was rather obsessed with trying to spot craterlets on Plato, although I'm not sure whether last night was the best phase or not. I managed a grand total of two with a suspected third, not amazing! The seeing varied from fairly decent to fairly wobbly depending upon whether it was over the neighbours garden or house! Next up M42 obviously. Even without a filter the nebulosity showed well, clear tints of green to my eye. Switching from 24mm Pan to Nag Zoom showed the Trap at between x123 and x246. Whilst the E star was fairly clear at times, F was nothing more than a 'might be' every now and then. I know the scope is capable of it, the seeing just isn't a lot of the time. I tried the binoviewers out too, to see whether they made any improvement on the Trap and Moon. The Trap was a no, I think E was slightly harder with the binos, and the Moon was an unfair comparison because it had gone over the neighbours house. Will repeat the exercise under better conditions. I then made a start at a few Carbon stars, having added a number of lists to SkySafari. I find these lists very handy as the basis for an observing session and highly recommend having a look at them if you haven't already. Sorted by transit time I picked off a few without too much slewing. Hind's Crimson star kind of stole the show, such a lovely deep red colour. In comparison the others I viewed on the list seemed far more orange but I'll persevere and see how I get on. WZ Cassiopeiae appeared on both the Carbon stars and the coloured doubles list, a quite wide pair at 57.7", one orange and the other white. Similar brightness at mag 7.1 and 8.3 BL Orionis and V613 Monocerotis were the other two I got, fairly unremarkable I found but still rewarding identifying them in the star fields. Sigma Cass and Iota Cass were the last two doubles that I picked. Sigma was, I think, a new one for me. Nice tight (3.1") uneven double, mags 4.88 and 7.24. To my eye they looked similar in colour, white. Iota is a lovely one as we all know. Not something I view very often, must try harder, but at x123 with the Nag Zoom the three components were beautifully resolved. I'm sure I could have used lower mag but didn't bother changing eye pieces. Higher mag increased the split obviously, but somehow I preferred the tight star shapes and split at the 6mm setting. So, nice little session with the Tak/AZGTi setup which is my usual these days. Lightweight so easy to setup and alignment quick and easy. Grubby little iPhone shot attached, plus some detail of the SS lists I have loaded.
  19. mitchelln

    M42 130301 4

    From the album: Galaxies

    M42, aligned, HDR

    © Neill Mitchell

  20. From the album: First Attempts at Everything

    My first M42. I think I used a 135/200mm lens on a NEX 5N. Not sure.

    © NYPalomo

  21. From the album: 2015.

    Taken with ed80+ sony alpha, 5x10 sec shots staxed

    © free

  22. 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

  23. Here's my first attempt at bi-colour HOO narrowband, using the OIII filter I got for Christmas Please do click through to Flickr and have a look at it with the magnifying glass, there's loads of detail in there. 23x600s Ha, 20x60s Ha, 10x600s OIII, 8x60s OIII, darks, flats and bias, equipment as per sig, Pixinsight. It was an absolute joy to process this, it was singing to me from the very first trial combination of stacks. I had lots of fun playing with colour balances (actually it's more like HOo, and then I let the red grow a bit, looks like a watermelon to me). Had fun with the HDR too. I've done some HaLRGB before, and I have the skies for it, but I'm finding HaLRGB to be quite frustrating - takes ages to process to get the balance right, and even then it seems to be a compromise between the detail of the Ha and the colours of the RGB, and all too often, it comes out like a big red smudge. I've got a Pacman in processing that might just end up left on the cutting room floor. It seems I've finally tamed my collimation and coma demons, but on this occasion, my guiding was surprisingly shocking. I normally get something like 0.45" rms error, but this time was as much as 2.5". We'd had near-gales the few days before I took this, and while it was calm at ground level on the nights I was capturing, I guess it was still hurtling around in the upper atmosphere - pretty twinkling stars, and a rather less pretty guide star bouncing around all over the place in PHD. I had to throw away nearly half of my OIII because the stars were too fat, as you can tell from the capture details above. Just for a laugh, here is my first attempt, taken 6 years ago with an unmodded DSLR - a shamefully small set of data (ahem, 13x10s !) and processed within an inch of its life (I think this was about the 4th reprocess), but not a bad attempt I suppose. Anyway, hope you enjoy, comments and cc welcome ! Cheers, Stuart
  24. 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.
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.