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Found 32 results

  1. The Crab Nebula (also known as M1, NGC 1952 or Taurus A). This is quite an improvement on the last attempt at imaging M1 about two years ago. This time it was possible to bring out some of the filaments that make this object so interesting - this despite using a much shorter focal length making the object appear significantly smaller. The image is cropped rather radically to show more details in the nebula so the stars appear bigger than I would prefer, but on the original they look fine. 040 x 300 second exposures at Unity Gain (139) cooled to -20°C 050 x dark frames 040 x flat frames 100 x bias frames Binning 1x1 Total integration time = 3 hours and 20 minutes Captured with APT Guided with PHD2 Processed in Nebulosity, Fitsworks, and Photoshop Equipment Telescope: Sky-Watcher Explorer-150PDS Mount: Skywatcher EQ5 Guide Scope: Orion 50mm Mini Guiding Camera: ZWO ASI120MC Imaging Camera: ZWO ASI1600MC Pro Baader Mark-III MPCC Coma Corrector Light pollution filter
  2. Hi all, here is my first image for this website and first challenge here M1 (Crab Nebula) - SNR in Taurus Narrowband image (Ha - 3 hours, OIII - 3 hours, SII - 3 hours) Taken with GSO RC 6" + ZWO ASI1600MM with ZWO EFW + Optolong NB filters. Thank you
  3. Vixen 114ED refractor, NEQ6, SXV-H9, 30 x 300s Ha and O3 subs, from December...
  4. From the album: DSO, Nebula, Galaxies, Comets etc

    M1 The Crab Nebula 08.12.2017 William Optics FLT-110 and Atik 314L Monochrome CCD 10 x 300 seconds H-Alpha, 10 x 300 seconds OIII, 10 x 300 seconds SII Stacked in Deep Sky Stacker and processed in Photoshop CS2 False colour image by assigning SII to red channel, H-alpha to green channel and OIII to blue channel

    © vicky050373

  5. alan4908

    Crab Nebula (M1)

    From the album: Deep Sky III

    My first attempt at the Crab Nebula (M1). The cropped image is a LRGB with Ha blended into the Lum and Red channels and represents about 14 hours integration. I was quite pleased with the amount of detail revealed. LIGHTS: L:14,R:16, G:8, B:14 x 600s, H:11 x 1800s. DARKS:30, BIAS:100, FLATS: 40.
  6. My first attempt at the Crab Nebula. The image is an LRGB with an Ha blend into the lum and red channels and represents about 14 hours integration time. Alan LIGHTS: L:14,R:16, G:8, B:14 x 600s, H:11 x 1800s.
  7. This is HaRGB data that I processed from subs downloaded from the Liverpool Telescope. I had to be very selective in choosing the subs as they were quite variable, some had eggy stars and others slightly rotated or with slightly different resolution, which messed up the stacking (and some tedious detective work had to go into finding the guilty ones). Exposures used varied between 60 and 120 s. The following filters were used: sdss-r (red), Bessell-B (blue), Bessell-V (green) and Ha6566. Could not find any clear filter subs to use for lum. Totally, 58 subs, so about 1.5 hours of data from this 2 meter RC scope on La Palma. Stacked in Nebulosity 4 and processed in Photoshop CS5 I was stuck by the sharp outer edges of the nebula in some areas. It is not due to me using layer masks - it actually seems to be like that, but maybe I messed up somewhere. All comments and suggestion welcome!
  8. Here is the crab nebula with my RGB data from two nights ago. That was a night that allowed 1.5 hours of data before the moon and mist sent me to bed. To this I added monochrome data (red filtered) from a glass plate taken during the 1990ties Palomar Observatory Sky Survey (put in as luminosity). So, a mix spanning about 20 years. My data was taken with a 5 " ES apo and Canon 60Da (15 x 6 min, ISO1600 naturally chilled by the ambient -7°C). All done in PS CS5. For anyone interested in spicing up their RGB data, POSS2 data can be downloaded from: http://archive.stsci.edu/cgi-bin/dss_form Here is first the final product with a zoom in showing some detail. I also post my RGB (I am sure I could do better with more time and less mist) and the POSS2 data. Comments most welcome.
  9. Second weekend session and im revisiting some of my early targets again M1 and the Lio trio about 3.5h or 10 min exposures iso800 but only about an hour on the horse. It also suffered from some high cloud last night so its a bit noisy but im realy chuffed with the improvements im seeing from my (much) earlier attempts, having a bit of an issue with color balancing the modded Cannon and CLS filter. However, it feels like its all coming together a bit better. Still have a way to go with processing but i can do that when its cloudy! Jupiter was just nudging above the neighbours house when i was packing up so had my first view of him of the year to round things off....nice evening
  10. Crab Nebula, imaged on January 2nd 2017 13 x 8 minute exposures at 400 ISO (2 hours and 24 minutes) 10 x dark frames 10 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: Celestron NexStar 127 SLT Skywatcher EQ5 Mount Orion 50mm Mini Guide Scope ZWO ASI120 MC imaging and guiding camera Canon 700D DSLR
  11. From the album: DSO, Nebula, Galaxies, Comets etc

    M1 The Crab Nebula 30.12.2016 Taken using Atik 314L monochrome CCD and Celestron 8SE SCT telescope 10 x 300 seconds H-alpha, 10 x 300 seconds OIII and 10 x 300 second darks Narrowband data assigned to colour channels to give a bi-colour image and lightly processed in PS

    © vicky050373

  12. From the album: DSO, Nebula, Galaxies, Comets etc

    M1 The Crab Nebula 3 x 600 seconds H-alpha and 3 x 600 seconds OIII

    © vicky050373

  13. The fine, dry conditions that we had for a few nights in the last couple of weeks enabled me to capture about 9 hours of narrowband data of M1. I need to capture some new flats following a slight change to the imaging train so the image below is not as good as it might be but it still is worth showing, I hope. I'll reprocess when I have the new flats and post an update. Equipment: TS (GSO) 12" truss RC (Operating at 1700 mm Focal Length with AP focal reducer) with modified back plate, Mesu200, Atik383L+, Atik EFW2, Lodestar X2 on Atik OAG Captured with MaxImDl and processed in Pixinsight. Exposure: S-II=H-A=O-III = 12 x 900s each filter. Combined using SHO script in Pixinsight and composited with a synthetic luminance made from all the subs. The colormask (sic) script in PI was helpful in modifying the image to a more pleasing (to my eye) colour palette. Derrick
  14. Hi! My next 3 images from December 2015, May 2016 and February 2016. All taken with Nikon D7200, SW150/750 and guided HEQ5Pro at Lisow (35km from Czestochowa, Poland) BTW I've got a question... Which settings are better for D7200? Higher ISO (eq. 1600) and 300sec frames or lower (ISO400 or 800) and 480sec light frames? M81 and M82 (May 2016) 7x300s ISO800 3x dark M33 (December 2015) 11x300s ISO1600 only 1 dark frame M1 (February 2016) 3x300s ISO800 3x dark (only 3 light frames because of very poor weather and high clouds) Tomek
  15. Toxophilus

    M1 - Crab Nebula

    From the album: Deep Sky Objects

    Messier 1 - Considerably better than my previous attempts at this object. Taken with reasonable guiding, with reasonable seeing conditions (allowing for the light pollution). I had a restricted time window for this image caused by a combination of cloud and the target getting close to roofs of houses. I tried a different technique to deal with the light pollution, by putting a light pollution filter on the front on the filter wheel nose and then imaging as normal. The addition of the extra filter did not affect the parfocal nature of the Xagyl LRGB filters used. For more information the AstroBin Link is: http://www.astrobin.com/243527/
  16. M1 captured 13th March 2016 with 127mm F7.5 APO triplet 0.8x reducer; Skywatcher AZ-EQ6-GT, Atik 314L+ OSC, Sequence Generator Pro, PixInsight. Not sure I've got the focus nailed although it was set using the auto focus routine in SGP. 14 600sec light frames with superbias from 200frames and 50 flats. No darks used (conscious decision following comments on this forum about the need for them). PixInsight Process; Preprocess -> Super Bias from bias frames - Master flat from flats with bias subtracted - Light Frames calibrated, debayered, cosmetic corrected, weighted, registered and integrated. Processing - Dynamic Crop - Dynamic Background Extraction - Colour Calibration - SNCR - MLT Noise Reduction (masked) - Stretched with Masked Stretch - Local Histogram Equalisation (masked) - Curves transformation - MLT Noise Reduction (masked) - ACDNR - Reduce Colour background/contrast with MLT (masked) and Histogram Transformation(masked) - Curves Transformation - Boost Colour in nebula with MLT (masked) and Colour Saturation - Curves Saturation overall - and Curves Saturation to stars only (masked) . Any pointers on steps to improve it or ways to improve my processing welcomed - still wading through tutorials and videos to get my head round PixInsight
  17. Recently had a go at reprocessing a DSLR image taken back in 2014, so here it is. NGC1333 in Perseus, made up of just under 19 hours hours of 10 minute subs. Much happier with this version, been wanting to reprocess it since about a month after posting the original! I have since moved on to CCD and also got round to putting together the tiny amount of RGB i captured for M1, at under 3 hours in total. Hope you enjoy, more information about the objects can be found on my Flickr page for those interested in that sort of thing! Exposure Details: 113* 600 secs, ISO 800 Exposure Details: R: 6x600s - G:4x600s - B:6x600s Scope: Altair Astro 115EDT Camera: Canon 600Da (NGC1333) Atik 383L (M1) Mount: NEQ6 Callum
  18. DoctorD


    From the album: DoctorD's Photos

    C8 F3.3 Lodestar using Starlight Live (30s stack - see image for details)
  19. Monday night was the first clear night here since 3 October and, even then, I had to dodge a few clouds. I managed to get M1 with my ED120 and modded 1200d taking 15 400sec subs at ISO 1600 with the usual darks, bias and flats. Not all the detail of M1 showing but not bad for a Canon I think. Processed in DSS Pigs in Space Pixinsight and a little bit in Paintshop Pro X8. Thanks for looking. Peter
  20. Like many people, I was out with the scope for the first time in ages last night taking advantage of the one clear night . As the forecast for the rest of the month was looking dreadful, I decided to give the Crab Nebula the One night treatment with my Esprit 120ED. It was a bit blustery, so the tracking was not the best, hence the shape of most of the stars , but you can't have everything going your way . All details of how I captured the image are on Astrobin, but any questions / comment, please ask / give . http://www.astrobin.com/231113/
  21. I was inspired by Ian's (x6gas) M1 post back in January, in it's various incarnations. I particularly liked his RGB version for it's subtlety. Most M1's you see are not subtle, it seems to force itself on you.. offering oodles of sharpness & brashness. Of course it has every right to be so considering the violence of it's creation! However, I'm drawn to the wispy fluffy stuff that starts to show up in RGB, so here's my attempt to draw it out with what I've collected so far. Processed in PI (rather quickly) this is mostly just RGB with a smidgen of Lum & Ha as Lum. Only mixed in about 10% max as it's so easy for it to become sharply dominant & loose the effect I'm trying to get. As always I'll need more data to bring out that wispy smoke I'm after. T: C925 C: Atik 314L+ L: 31 x 300 R: 23 x 300 G: 25 x 300 B: 19 x 300 Ha 5 x 900 All Bin 1
  22. So, with the Moon not rising until just after 10pm and the littl'un in bed soon after 7pm, a window of opportunity. I was ready with cooled scope soon after 8pm and began the evening with M1 (The Crab Nebula). A fine sight in the 15mm eyepiece. Quite a large nebula, which appeared rectangular and slightly grainy when UHC filtered. This was the first time I had seen it for over two years. M35 was a lovely sight, with companion NGC 2158 a misty patch to the South of a group of stars South West of the main group. The use of averted vision was not necessary for this but was needed for IC 2157, a slightly more diffuse cluster further West again. Next up was 8 - Flora, an Asteroid well placed in Leo. At magnitude 9.1, it was quite easy to locate nearby to Eta Leonis. Another constellation rising quite high by this time is the magnificent Ursa Major. I managed to identify two more moderately diffuse galaxies which were in close proximity to Gamma Ursae Majoris; M109 and NGC 3953. Both of these required gentle movement of the scope to pick up. ____________________________________________________________ Observing Session: Sunday 8th February 2015, 20:10hrs to 21:40 hrs GMT VLM at Zenith: 5.0 - 5.1 ____________________________________________________________ Monday the 9th started with another clear sky and I was back out there by 8pm. I started with a quick re-alignment of my finderscope after I inadvertently loosened the wrong screws when disconnecting the night before (doh!). I began by going back to check the movement of 8 - Flora from yesterday. Before some light cloud rolled across Ursa Major / Leo, I also managed to locate NGC 2841, a bright and quite condensed galaxy near to the double star 37 Ursae Majoris which sort of makes a pair with the magnitude 8.5 star HD 80566. This is quite an easy find from the signpost stars Theta and 26 Ursae Majoris and is more prominent than a number of Messier objects. With cloud parked across half the sky, I finished the night with the camera trained on Orion for a few wide-angle snaps. I cannot remember the last time I had two nights running under the stars but it is nice to be back in the game. The Asteroid collection is into double figures and is ever growing; 1 - Ceres 3 - Juno 4 - Vesta 6 - Hebe 8 - Flora 9 - Metis 10 - Hygeia 12 - Victoria 13 - Egeria 15 - Eunomia (my first) ____________________________________________________________ Observing Session: Monday 9th February 2015, 20:00 hrs to 20:35 hrs GMT VLM at Zenith: 4.9 - 5.0 deteriorating as wispy cloud rolled in. New - Revisited - Failed
  23. Hi All, finally managed to get out under the stars after a long break. Went for M1 as it was in a good position for me and a target that I've never tried properly before. Managed to grab 12 x 10 mins Red, 12 x 10Mins Blue and 8 * 10mins Green. Just some simple processing with PI, Registered, Integrated, Linear fit and a masked stretch. Quick lift with curves and that was it. Hope you like, Cheers John The full frame image And a closer crop of M1
  24. From the album: DoctorD's Photos

    102MAK with F3.3 reducer and Baader Moon & Skyglow filter at 30s exposure
  25. First attempt at the Crab nebula (clear sky at the end of November, Gift one) and using my new coma corrector for the first time (gift two) 135 X 60 sec lights at 1600 ISO and 30 darks & flats. stacked in DSS and processed in PS cs2 Equipment as per signature. probably over processed it but 'every days a school day' that's why I've put up here. all comments and advice is welcomed. 50% crop. thanks for looking Tim
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