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_android_vs_ios_winners.thumb.jpg.803608cf7eedd5cfb31eedc3e3f357e9.jpg

Search the Community

Showing results for tags 'm101'.



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
  • EEVA (Electronically Enhanced Visual 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
  • 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
  • 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 49 results

  1. Hi, this is my first time using my new Esprit 100ED, my first time processing using Pixinsight, and it's my first image using a Mono + filters. I loved them, can't wait to try on more targets. here's the result: Equipments: SkyWatcher Esprit 100ED SkyWatcher EQ6-R SkyWatcher EvoGuide 50ED Guidescope Imaging cam ZWO ASI1600MM Cool Pro ZWO EFW ZWO LRGB+NB 36mm filters Guiding cam ZWO ASI290MM Mini Seeing was avarage Location was in a Green Zone Exposures: Ha 11x1800sec L 39x300sec R 13x300sec G 15x300sec B 15x300sec Darks: 24x300sec 10x1800sec Bias: 70 Thanks
  2. Hi, here is last nights shot at M101. This is a luminance run only and was to test to see if the central Halo was still there, and it is, grrrr. I have a sneaky suspicion it is coming from the edge of the secondary mirror. I have pretty much painted everything else matt black, so far. Anyway, Here is the Luminance run. Subs: 10x 300sec, 5x 420sec Processed in Pixinsight. BIAS, DARKS and FLATS applied. Cheers Paul
  3. After two years of trying and failing, I finally got a reasonable shot of M101. It took two hours and 48 minutes of exposure, taken over a couple of nights, and it still could have used more. From a dark sky site it would have been easier but from light-polluted London it was particularly tricky to image and I was beginning to think it wasn't possible with my setup. It's a bit rough and the colours are not quite right but I'm pleased to have got this much of it. 21 x 8 minute exposures at 400 ISO 11 x dark frames 20 x flat frames 21 x bias/offset frames (subtracted from flat frames only) Guided with PHD Captured with APT and processed in Nebulosity and Photoshop Equipment: Celestron NexStar 127 SLT GoTo AltAz mount with homemade wedge Orion 50mm Mini Guide Scope ZWO ASI120 MC imaging and guiding camera Canon 700D DSLR
  4. alan4908

    M101

    I discovered some unguided Lum subs of M101 from earlier this year which I was using to check my new mount/scope combination (Esprit 150/GM1000HPS). So, I thought I'd see if I could use them to enhance an earlier M101 result from last year which was taken with a ED80/NEQ6. The LRGB +Ha image below consists of about 20 hours integration, 17 hours with the ED80 and 3 hours with the Esprit 150. The Ha is blended into the red channel. The image below was created using Registar to align the new Lum data from the Esprit 150 with the previous LRGB+Ha post processed result from the ED80. I then post processed the two images in PS and Pixinsight, treating the the lower resolution (1.46 arc seconds/pixel) ED80 data as "RGB" and the higher resolution (0.7 arc seconds/pixel) data as Lum. Alan LIGHTS: ED80: L:26,R:31:G:11,B:12 x 600s; Ha:12 x1200s. Esprit 150: L:4 x 600s, 4 x 1800s. DARKS:30; FLATS:40, BIAS:100 all at -20C.
  5. This is my first attempt at gathering imaging data over the course of multiple evenings. 91x300s at -20C, TS80 apo + TS photoline x0.79 FF (first night missed proper distance by couple of mms, second night got it right), heq5, ASI178mcc, hutech IDAS p2, TS60 + asi185 for guiding. Other data: x48 darks, 2 sets of flats + flat darks (x256 each) Conditions: heavy LP (red zone, but target was also in direction of city center - worst part of the sky), lousy transparency (NELM ~3-4), changing seeing (at certain times as good as 1", but with noticeable local heat pockets - guiding was nightmare). Just basic calibration and processing: ImageJ, Gimp 2.9, RawTherapy, Nik Collection Dfine2 Image is binned x2 and cropped (I missed a bit of framing on the second night, and tilted FOV at about 6 degrees). All comments welcome.
  6. .... Or so it seemed there were certainly enough horses around me! The clouds decided to budge outta the way at 11ish but I was still a bit busy sorting some things out and finished up by midnight. Work the next day though so I was left with a dilemma... Well, common sense prevailed so I went out to do some astronomy! However, keeping it reasonably sensible (for a change) and rather than a standard marathon session I promised my good Wife I'd be out for only a short while. To keep things simple I packed my 80ed and camera tripod for an uber quick setup with only a couple of EPs - My 36mm Baader Aspheric and SW 22mm. This was going to end up a bit more a test really of what the 80ED can do with a little bit more darkness and more importantly further away from local LP and at least get out after the disappointment of Monday night's rubbish night where I packed up early having seen naff all due to rubbish transparency and woeful dew. I walked a bit further instead of going to my allotment which is reasonably dark and opting instead to go with my lightweight setup to Common Ground close by but at least going a little further away from light pollution. It does indeed make a difference! iPhone app SQM reader gave a reading of 20 and pretty sure I can improve on that going further out to the west (got a couple of locations earmarked that I can possibly cycle to just need to work out the logistics of carrying the scope). I entered the Common gates around 00:45 and there were quite a few horses mulling about doing whatever it is horses do at that time of night. Actually there were loads of them. I made may way through them without trying to startle them and made my way to the highest point at a reasonable distance away from them. After spending all of 1 minute setting up (gotta love a grab n go setup) - on to M101. Directly above me proved to be rather a challenge with such a setup and my 80ED focuser is starting to slip (need to tighten it up a bit) but really it is not too happy about gripping a 2" diagonal and a hefty 2" eyepiece. It was just about managing with the Baader EP but the SW 22mm was a no go (it's reasonably heaver) Perhaps for the future I'll stick to just taking my plossls and Orthos! Star hopped from Mizar following the line of bright stars 81, 83, 84 and 86 Uma directly to M101. Bang! There is was... M101: Thought this would be a challenge with the limited aperture but to be honest it showed much more clearly with the 36mm EP that I've ever seen it with the C8 in my allotment. A decent sized core surrounded by light haze. I tried my 22mm and managed to get it to hold for a little while with the thumbscrew tightening the focuser but it was still slipping if I didnt hold the whole thing up. With the 22mm (very briefly) I could make out a considerably brightening of the area and slight patchiness in contrast. It was too frustrating though to keep going so I went back to the lighter 36mm and observed it a while taking in the view before moving on to M97 and M108 M97 No filter required it was just about visible direct vision but much better with averted vision showing a small circular bit of fuzz. M108 a small fine light area the shape of it showing more easily with averted vision as an extented oblong however I could not see any detail outside of the core. M65 / M66 distinct spiral galaxy form long oblong both showing a considerably brighter central core with the 36mm. Fascinating to see them within the context of such a large FOV. With the 22mm the area outside the core was more more visible with the main core fading slightly away. NGC 3628 to make up the Leo triplet. Just visible with averted vision but a tricky customer! Long ghost like apparition that soon faded from view. Pleased to have got this one though with the 80mm frac! So my mission is to find a place where NGC 3628 is visible direct vision easily with the 80mm Close to mag 6 NELM required? I had a quick scan around Cygnus... So many stars! The Milky Way looked absolutely astounding with the wide field view of the 80mm scope and 36mm EP. I could not see the Veil with it but then I had no filter with me and it was still rather low down. Naked eye the Milky Way was just about visible although this should be better in a month or so. I spent a little while just bombing around the area of the Milky Way with a big cheesy grin on my face. Well that was it it was close 1:45am and I packed up my stuff. Not too far away I noticed I was being observed myself by 4 horses. I'd just got everything stuffed into my back pack and scope in its bag and they decided to make a bee-line for me. Good job I'd decided to pack up as possibly horses and optical equipment don't mix terribly well. Still, It was a shame to have to go on such a wondrously clear night that wasn't freezing but I think I may now make another trip further out to get even darker.
  7. Depending on your point of view this was either a late night or an early morning stargazing trip. After a few hours of sleep my alarm woke me at 12:30am and I headed to the listed Bortle 1 skies just south of Tonopah, Nv, USA (map). When I went to bed the conditions were iffy due to a weather system that was pushing through - but when I woke up the satellite showed clear-enough conditions to warrant getting dressed and giving it a go. I arrived at my desired location and proceeded to setup the scope. The challenge of the night was going to be the temperature which was hovering around 9F (-12C)...I was dressed in sweater, jacket, ski jacket, jeans, ski pants, ear muffs, a hat that covered head and neck, ski gloves, and two hand warmers. Brrrr. Old Friends. New Observations. Missed Objects. The Milky Way was visible...but not impressive as I've seen from many other dark locations - a clear sign that transparency wasn't at its best...some of that upper level moisture must be hanging around. M31 was below the horizon but I'm sure it would have still been naked eye. The Beehive Cluster (M44) and suprisingly M67 (averted) were both visible naked eye. I didn't really go into the night with any set plan on what to observe...I wanted to ID SN2012ht, try to observe the Horsehead Nebula, maybe check on a few old friends under DARK SKIES, and not freeze to death...pretty simple. After spending some time in/around Orion I realized that my eyepiece was going to be a limiting factor as it was frosting over about every 30 minutes...requiring a defrosting back in the car. Anyway - M42/M43 looked brilliant as usual. The Flame Nebula was just about as visible as I've ever seen it. But tried as I might...the Horsehead eluded me. The jump from Alnitak to the Flame Nebula to HD37903 which is obvious with the surrounding nebulosity. And then to HD37805 which had much less nebulosity in the area. Knowing the Horsehead is w/in the FOV at 110x I started searching but the faint nebulosity that defines the area of the Horsehead wasn't visible. I'd come back numerous times tonight. Moving over to Sn2012ht the jump inside Leo was easier than expected. I found the right star field in my 110x EP FOV and quickly identified Sn2012ht shining around mag 12.x (it's listed at 12.8 and I'd buy that). Two nearby stars at mag 9.9 and 13.1 were both easily visible and the SN was a pinprick of light (like a very compact star...which sounds funny to say) a touch brighter than the 13.1 nearby star. Victory - SN #8 logged! The host galaxy was NOT visible...and with it listed at mag 15.x that's no suprise...but 'companion?' galaxy NGC 3447a (mag 13.1) was just visible. I went back to the Horsehead...was able to get faint nebulosity on and off...but never positively IDed the Horsehead Nebula. Over the next 90 minutes I spent time with some old friends: M81 - the core was strong and both spiral arms were faintly visible...the lower arm in my EP stood out a littel better than the other. M82 - shinging as a bright cigar...the dust lane just visible across the center and an unevenness along the central area...hints at more structure present. M51/NGC5159 - both galaxies showed up well and the spiral arms of M51 were visible...not the best views i've had of the arms...but they were present. The arms did not reach all the way to NGC5159. M101 - one of my best views of this large galaxy - spiral structure was faintly visible and the core stood out better than I'd ever seen it. At this point my feet ached from the cold seeping through my shoes, my EP was icing up too often, and my laptop was difficult to use with thick gloves...so I packed up and headed to the warmth of my car and hotel. I'd love to come back here when conditions allow for more comfortable viewing. It's dark! Overall - several old friends visited, one new galaxy, and one new supernova...worth some frostnip I guess. Happy hunting!
  8. First Galaxy of 2013 and 5 NGCs Taken with a 7D and 600mm f4 lens at f5.6 30 x 4 minute, 30 x 2 minute and 30 x 1 minute lights at iso 1600 plus 3 x 20 darks and flats and shot in raw, Processed in DSS and then PixInsight and PS It could be better if I could process this stuff properly but I'm relatively happy with it
  9. alan4908

    M101

    From the album: Deep Sky II

    One from Feb/March 2016 and my first attempt at experimenting with colour balance using the freeware program eXcalibrator. The image is a H alpha blend LRGB and represents about 17 hours. LIGHTS: L:26: , R:31, G:11: B:12 x 600s and 12 Ha x 1200s all at -20C.
  10. alan4908

    M101

    From the album: Deep Sky II

    I went for a relatively long exposure with M101, mainly because of its faint spiral arms - I ended up with just over 17 hours. From a processing perspective, the image was sharpened by deconvolution (CCDstack2) and smartsharpen, HDR toning (PS). The Ha was incorporated into the LRGB image by blending the Ha data into the red channel via the PS screen blending mode. LIGHTS: L26; R:31: G:11: B:12 x 600s + Ha: 12 x 1200s, DARKS: 30; FLATS:40; BIAS: 100 at -20C.
  11. AKB

    20170325_M101

    From the album: EAA

    40 x 1 minutes subs. Quattor 8" CF and Ultrastar mono camera.
  12. From the album: SW 150PDS - DSLR 600D / Atik Titan/Atik 314L1+/Atik Infinity

    Imaged for 60 mins with Atik Infinity/SW 200PDS Preprocessed in AstroArt and Startools Processed in Photoshop

    © B G Wadham

  13. spaceman_spiff

    M101

    From the album: Photos from Bury

    M101. I stretched the original Tif using DSS. Hardware details: Camera: Nikon D200. Telescope: SW Evostar 120 with Baader UHC-S filter. Mount: AZ-EQ6 guided using a ST80 synguider. Image details: Lights: 31 x 3min at ISO 800, Darks: 20 x 3min at ISO 800, Lights and darks separated by 1 min intervals. Flats: 40 x 1/40s at ISO 800, Bias: 30 x 1/8000 at ISO 100 Date of capture 22/01/2016. Conditions: Clear sky with light cloud, sometimes interrupting the imaging. Seeing was ok (but target was quite high). The guiding seemed ok on the night but quite a few images sowed slightly elongated stars :-(. Possible bad calibration (too aggressive). The wind was very light so that was not the issue. Processing was done in DSS. I am trying to improve the handling of colour. I increased the saturation by 20% and aligned the colour channel histograms until the dark signal at the edge of the image (the darks were not quite cancelling the dark signal) was the same as in the original photos. This seems to work quite well (note to self!).

    © D Elijah

  14. frostynixon

    M101

    From the album: Deepsky Objects

    Reprocessed my M101 Data with PI. A total of 11hrs integration time.
  15. alan4908

    M101

    From the album: Deep Sky III

    This is an enhanced version of the M101 (reprocessed) image that can be found in my Deep Sky II gallery. The enhancement was achieved by adding about 3 hours Lum data from the Esprit 150 which boosts detail. The image represents about 20hours integration.
  16. Having started capturing data for this in Feb, I was beginning to think I'd never finish it with the awful weather of the last 2 months. However, this week has finally yielded some clear nights so I've managed to cobble enough together for an image, and in time for the end date of this challenge. Optics: MN190 Camera: 460ex Guiding: Orion mini guidescope + QHY5L-ii L: 21x600s RGB: 3x7x600s Ha: 10x500s
  17. Left the scope running over night on his one when we had that cold snap, managed 42x10min luminance subs, added to some old 2x2 binned RGB data. This is a crop of the centre of the image to show off the galaxy detail a bit better. Pleased with this, although I might try a re-process when I’m not so tired. Atik 383L+ mono, 190MN, LRGB Baader filters thanks for looking.
  18. Hi! Finally clear sky in Poland! Time to first galaxy image from my QHY163C. I'm still very happy with this camera and now waiting for QHY168C BETA. I hope that it will be even better than 163 40x180s calibrated with darks, biases and flats
  19. First serrious aquisition with new Ultimate 600D from JTW Astronomy. Date: 14-15.may.2013 Location: Valea Izvorului, Mehedinţi, România Object: M101 - Messier 101 - Pinwheel Galaxy Mount: Celestron CGEM Optic system: William Optics Megrez 90mm APO dublet, f/6.2, 558mm WO P-FLAT4 reducer at 430mm and field corrector Photo system: Ultimate 600D Guiding: TS 50mm finder with barlow andQHY5 mono CCD Acquisitions: 12x10' , ISO 800 Processing: PixInsight and PS6
  20. I was just wondering given the difficulty I had last night in trying to find M101 spiral galaxy - it is a mag 7.9 messier object - would this have been washed out completely by the moonlight? I was finding M92 and M13 without much of a problem. I used stellarium on the iphone to try to pinpoint the galaxy but there was just nothing there at all, and I would have guessed it would have shown in my scope. On another note I problem I am having is also trying to translate the scale of what I am seeing on the phone to what I am seeing in the sky. Anyone got any tips how to do this more successfully? Thanks!
  21. Michael1971

    M101

    From the album: DSO's

    10 x 360s ISO 800

    © MichaelB

  22. Beautiful clear night in Denmark on Sunday night, so got out there in the cold for a few hours: (Skywatcher 200p, EQ5 goto mount unguided, Canon 450D, [42 x 120s subs @ iso 800, 16 x darks, 16 x flats, 16 x flat darks], DeepSkyStacker + Gimp for levels adjustment) Polar alignment was a bit off, so some trailing. But I feel it's much better than my first attempt below (didn't do flats, so horrible vignetting, and focus was off, though alignment was better):
  23. So I am currently at my grandma and grandpas, and they live in an area where the milky way is clearly visible at moonless nights. I took advantage of this the other day as the sky was clear, so I get my telescope, binocular and camera outside at dusk. My main goal was to try out my 50mm f/1.8 lens for the first time under darks skies, but i also wanted to try out my bins(naturesport 10X50 wa). I shot a couple of test frames all over the sky to check out what I should focus on. As I took a frame of the handle of the big dipper, I tried zooming in at the area where i knew m51 would be placed. Even tho I didn't expect anything as the moon was full, I noticed a slight glow from the galaxy. This made me really excited as I wasn't expecting to capture it with a 50mm lens. I checked the area where m101 was located, and wow! I could also see this galaxy! Because of all of this, I continued shooting frames at this target, so in the end, I had 75 frames of 6 seconds each, f/3.2 and iso 800 taken with a nikon d3300. processed in deep sky stacker and adobe lightroom cc 2017. Any feedback is appreciated! clear skies! Victor Boesen
  24. The weather forecast promised 3 clear nights, but only one turned up. Due to getting back late from London; the laptop giving me the BSoD and refusing to recognise the USB hub; and Astrotortilla and BYEOS refusing to play nicely together it was 1am by the time I managed to start imaging. Fortunately I did not have to go into work the following day, so I kept imaging until it started to get light (boy am I suffering for it today ) M101 with an ED80 and an unmodified Canon 60D. 7x300s and 17x600s (when I was confident that the guiding was working OK, and the skies were dark enough I upped the exposure time). There was obviously something a little off as there is a large spread around the brighter stars, I am fairly confident that the focus was OK as I check with the Bahtinov mask and it looked good. I think that there might have been poor seeing or high level vapor in the atmosphere. Or it might just have been that I have had to crop the image more than usual, so the stars appear to be bigger. Although, I had just found a version I did a year ago and my expectations have obviously changed over the past 12 months as the new version is a lot better than the version from last year:
  25. I'm not so sure about this one; My processing skills are failing me somewhat, but I also think longer exposures must be required to get the best from this galaxy, not that my sky will allow much longer! Some of the exposures were taken from Cornwall under dark skies, the rest at home - under orange skies 60x300s, ISO 800, 450d 150P-DS Opinions and suggestions much appreciated! With a bit of context:
×
×
  • Create New...

Important Information

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