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Found 44 results

  1. Hi This is my version of the Rosette nebula using the Hubble and taken with the ASI071 OSC camera. Telescope was a C925 EdgeHD with Hyperstar lens. Exposure time: 4hr 50 min in total at unity gain 2hr 00 min (24 x 5 min) Ha 1h 15 min (55 x 5 min) OIII 1hr 35 min (19 x 5 min) SII This setup is awesome. A few years ago such an image just could’ve been taken with a monochrome ccd. Regards, Alfredo
  2. From the album: Deep Sky Imaging

    This is the SHO result of my first imaging object with the cooled Canon 40D. Through out the imaging, the camera failed a number of times due to condensation buildup inside and so this is a result of two different 40D bodies and sensors. I captured some HAlpha data with the originally cooled 40D before it failed and the second half of the HAlpha, OIII and SII are captured with the second modded and cooled 40D    Exposures: SII: 30x1200s HII: 30x600s OIII: 30x900s ISO1600 Telescope: BOSMA Beta RE  Focal length: 500mm

    © Mariusz Goralski

  3. From the album: Widefield DSO

    Revisiting the data on this one since I found a tip today on implementing the Hubble palette.
  4. Had my longest session ever, 6hours, last night/this morning. Started off last night on the Flaming Star then had a go at Orion's Head and finally a few subs on the Rosette. Flaming Star. 18x600secs Atik 383L, Samyang 135mm f2 Astrodon 5nm Ha filter. Next, went over to Orion's Head, all of it still does'nt fit on 135mm. 12x600secs Atik 383L, Samyang 135mm f2 Astrodon 5nm Ha filter and finally The Rosette 8x600secs Atik 383L, Samyang 135mm f2 Astrodon 5nm Ha filter
  5. Hello all, I just got the O3 and the S2 filters this weekend after 2 months of waiting. I bought initially an Optolong Ha and I thought to buy the O3 and S2 also from Optolong. They O3 and S2 are advertised as being 6.5nm which also contributed to go for them instead of the Baader's. Anyway, I acquired some 3 hours if I remember well with the Ha in 1min subs and now just above 2 hours with the O3 in 3min subs. Unfortunately, I can image to the south only up to ~130 degrees in AZ. So the good skies around 180 degrees where objects reach the max altitude are not reachable from home. I have to give it a try later in spring from outside. All taken with the ASI 1600 MMC, cooled to -15C, put on the Tair3s wide opened at F/4.5. 300mm focal length. https://drive.google.com/open?id=0ByhJ_xuQxcnjWUZUZTRyRXFYYzA Will post in the evening the Ha and the O3 components which were mixed HaOO. Clear skies, Alex
  6. Just got in from my second time out with my scope and successfully found the Rosette nebula, NGC 2237. I'm trying to better my navigation so I spent some of the night gazing but I found that finding the nebula was fairly easy once I got the stars right. Low light pollution where I was at allowed me to see some fairly dim stars and I got to it within a few minutes. Being the first one that I've seen, I couldn't help but think "How will I know that I found it?" but the nice, bright cluster was quite obvious haha. I have a nexstar 8se and was using the 25mm ep that came with it, and I feel that this was fine, but I've read about some people going up to 40mm; what is your preference? I'm looking out for my next ep.
  7. Hi all, here's the first light from my new modded 1100D: Rosette Nebula by glowingturnip, on Flickr 21x 300s lights at ISO1600, darks, flats and bias, equipment as per sig, Pixinsight processing To say that I'm pleased with this camera would be a total understatement - it's soooo so much better than my old Nikon D80. No amp glow and much less noise and a wonderfully clean master dark, so much easier to process ! And that's before all that lovely Ha goodness too. APT worked very well with it, respect to Ivo, and license duly paid for As for the typo - this wasn't actually supposed to be the Rosette Nebula at all - I was going for the cone nebula and xmas tree cluster, NGC 2264, but made a note of it wrong as NGC 2246 which is part of the Rosette - it wasn't until the day after when I was checking the lights that I realised something was strange, I recognise that cluster... Slightly annoying, I've already done the Rosette once, and my wife even framed it for me for my birthday, and of course now this is my better version, ho hum. I'm slightly concerned though that I have some coma showing, as you can see from the unprocessed corners below, and that the coma seems to be asymetrical. I'm using a Baader MkIII CC, and the scope was laser-collimated at the start of the session. Would appreciate any input from you knowledgeable folks on this. The target was off to the right of the frame so the stars are unfortunately not as round as I'd like, and I had to do a bit of minor offset surgery in the very top-right corner. Anyway, hope you enjoy, Cheers,
  8. Rosette Nebula by mikeyscope, on Flickr Canon 60Da Pentax 500mm lens f5.6 iso 800 x5 300 sec exposures Deep Sky Stacker 5 Flat Frames 5 Dark Frames M33 by mikeyscope, on Flickr Canon 60Da Pentax 500mm lens f5.6 iso 1000 x3 600 sec exposures Deep Sky Stacker 5 Flat Frames 5 Dark Frames A couple of belated images from Kielder & Galloway... had to discard a few frames due to satellites & patchy cloud so had to give them a damned good thrashing in Photoshop ...they deserved it!
  9. From the album: Hyperstar and QHY8L

    Taken on 15-Dec-2017 (no moon) Hyperstar 9.25" with Baader UFC and IDAS P2 filter Avalon M-Uno guided and dithered with Nebulosity 10 x 120 seconds (for a total of 20 minutes) Lightly processed in PI
  10. Presenting my first attempt at Bi colour imaging. This is the Rosette Nebula (NGC2244), which is located in the constellation of Monoceros. Telescope: Orion 80ED Mount: Sky Watcher HEQ5PRO Camera: QHY9s Mono Filter wheel: QHYFW2 Filters: Baader 7nm Ha, 8.5nm OIII Exposure: 300sX30Ha, 300sX22 OIII captured on the nights of 1st and 8th January 2019 Stacked in Deep sky stacker, proceed in Pixinsight, finished in Photoshop
  11. I recently bought an Astrodon 3nm Ha filter for my new mono camera. It was half price so I couldn´t resist and 2 nights ago I got to try it for the first time. Yep, it delivers! The image was a breeze to edit. The only thing I have to fix is a backfocus issue (I think) that gives me elongated stars in the corners. So, this is 44*5 minutes with the ASI 1600MM-Cool and the Astrodon 3nm hooked up to a Samyang 135mm lens @f/2.8. My guider malfunctioned so I thank the short focal length for allowing me to shoot 5 minute subs Can´t wait to catch some OIII to make a bicolour version! Oh, I forgot - no darks, flats or bias frames used since I haven´t made them yet
  12. Guest

    Rosette Nebula

    I hope all of you were able to get out last night. I managed to capture 10x15min on the Rosette Nebula. Teleskop Service 65mm, QHY8, EQ6 Pro, AS120MC guiding through an Altair 60mm, processed in Pixinsight David this compares the 1 hr of data I got on the 2nd to the 2.5 hours captured last night - big difference :-)
  13. My first attempt at processing the subs I took last night. Not totally happy yet - next time I process it I think I need to boost the red in the mid tones somewhat to try to compensate for the filter in my standard Nikon D5300. Details: Rosette Nebula in Monoceros ( NGC 2237, 2238, 2239, 2244, 2246 ) by Mike O'Day ( 500px.com/MikeODay ). The Rosette Nebula surrounds a cluster of bright young stars (NGC 2244) and is around 5,200 light years from Earth. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay This image ~ RA 6h 31m, Dec 5deg 2'. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount. Orion Short Tube 80mm guide scope & auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector (no filter used). Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90..71 x 30 sec ISO 800. Pixinsight & Photoshop. 20 December 2015
  14. Reprocessed: The difference is fairly subtle unless one sees this version and the original together... Details: Rosette Nebula in Monoceros ( NGC 2237, 2238, 2239, 2244, 2246 ) by Mike O'Day ( 500px.com/MikeODay ). The Rosette Nebula surrounds a cluster of bright young stars (NGC 2244) and is around 5,200 light years from Earth. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay This image ~ RA 6h 31m, Dec 5deg 2'. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount. Orion Short Tube 80mm guide scope & auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector (no filter used). Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90..71 x 30 sec ISO 800. Pixinsight & Photoshop. 20 December 2015
  15. Hi, Two pics taken with QHY163C ColdMOS. I like this camera :-) It's very sensitive, with Ha 7nm filter even more than my previous QHY8L. M42 (Newtonian 150/750 reflector) 70x60s 30x5s Gain 10 Offset 70 Rosette nebula with Ha 7nm 2" filter (Tair 3s lens) 15x300s Gain 10 Offset 70 Regards, Tomek
  16. Ladies and Gentlemen, I present for your viewing pleasure... the Rosette Nebula !! (12 of 19 lights, 255 secs at ISO800, darks, flats and bias, DSLR at prime focus, kit as per sig, Pixinsight processed) Quite a daunting target, most of the images out there on the internet are shot with CCD cameras with Ha and OIII, so naturally I thought I'd give it a go with my old noisy unmodded DSLR with a serious amp-glow issue. I couldn't actually see the nebulosity at all in the eyepiece or framing shots, but did manage to match the star cluster to pics on my laptop, so I thought I'd give it a go. I was amazed by how big it is, over twice the angular diameter of the full moon, that's the full width of my DSLR frame from top to bottom. I hope you enjoy, I'm quite pleased with it
  17. Picked up some editing tips today and went back to some old data to see how it works... I think it did While it is easy to assign narrowband data in Hubble palette order, I've never got the look remotely close, but this looks a good step in the right direction. For comparison, my previous version is below. I know, I still have to work on the stars... I don't have the notes to hand, but this was done on DSLR using Astronomik narrowband filters and not enough focal length.
  18. rotatux

    Rosette (20190223)

    From the album: Other (Narrow field, DSO, EQ)

    The Rosette Nebula, with its inner star cluster NGC2244 A pseudo-HDR image because it's the combination of several developments from the same stacking result (could not bring out the colored nebula and master the stars in a single dev). Gear: Olympus E-PL6 with Skywatcher 130PDS and CC on Omegon EQ-300 tracking RA Capture: 10 × 60s × 3200iso, no darks/flats Processing: Regim 3.4, Fotoxx 12.01+ Site: 50km from Paris, usually Bortle 4-5
  19. From the album: Alt-Az / NoEQ DSO challenge

    2nd Try at rosette nebula (from heavily polluted sky) Capture: 50 good + 42 average lights (of 122) x 20s x 2500iso, 56 NG darks, Olympus E-PM1 with Skywatcher 130PDS on Celestron SLT mount, Skywatcher ComaCorr and TS UHC filter. Processing: Regim, Fotoxx Date: 2017-01-26 Place: suburbs 10km from Paris

    © Fabien COUTANT

  20. Wrapping up in double layer goose feathers I braved the obsy last night. I planned a tour of Auriga with a view to chucking in some favourites. I set up the ED150 on the AZ EQ 6 and fitted the WO quartz diagonal accompanied by my ES 20mm 82'. I stuffed my Astronomik 1.25" UHC (bargain price thanks @FLO) in my pocket too. This set up required the retro children's playroom chair with the legs sawn down due to the position of Auriga. I spent about half an hour checking the plethora of open clusters sprinkled in or near the Milky Way. The sky was one of the best this season so it was a jewelled spectacle and the ED150 reveals such sharp colours enabling me to distinguish the cooler stars in some of the clusters particularly the occasional red giant. As Monoceros reached the meridian I moved to the open cluster associated with the Rosette. Now, for all my efforts over the years, the emission nebulosity has eluded my eyes but tonight with this newish 6" frac I was somewhat taken aback to see a doughnut appear in the view. Switching to a view with the UHC filter was nothing short of astonishing! It wasn't just there; I was falling into its centre. Texture, depth and dark globules were easily discernible. The extent was slightly larger than the FOV with the 20mm so I slewed slowly around and the perimeters and varying consistency of the Ha emission were easily picked out. I spent a long and happy time soaking this up; it was truly outstanding. Thoroughly recommended. I retired happily to the warm kitchen and toast.
  21. During recent night I've managed to take only 50 minutes of OIII in narrowband so I could add to previously gathered Hydrogen. This is more like experiment as it is my first bicolor image. Scope: Skywatcher Evostar 80ED DS-Pro with flattener Mount: NEQ6-Pro Camera: QHY168C Filter Baader 7nm H-alpha , Baader O-III CCD Guiding camera: ZWO ASI120MC Guiding scope: finderscope 16x300s exposure at -10°C (80 min total) in H-Alpha 10x300s exposure at -10°C (50 min total) in OIII
  22. 90min HII, 72min [NII], and 80min [OIII] in 2 min subs with the 80mm f/4.4 and ASI1600 MMC camera through 3nm Astrodons. Piggy backed on the 130 f/7 mounted on the DDM60 and encoder guided. Sigma Add stacking in AA5, then gradient removal, alignment and Trichromy with [NII] mapped to Red, HII to Green, and [OIII] to Blue, following the Hubble Palette. Multiple Histogram Stretches, and a Low Pass filter to get rid of some of the noise. The RGB stack needed a serious crop as the [OIII] subs were at a steep angle to the other data, which is a pity as I can see plenty of outlying detail in the individual stacks. I'm not taking this particular image any further as the data is too short. I've already got another 2 hours of HII in 5 min subs which I'll stack and add to the existing HII stack. The [OIII] I think I'll bin as it's so badly skewed, I'll try to replace it with 5 min subs properly aligned. The [NII] is OK as it stands, but I'll try to add to it. When I'll be able to get more data is a moot point, as the weather here has been dire. There *may* be a couple of windows coming up, but I'm not counting on them.
  23. ( please click / tap to see larger ) Identification: The Rosette Nebula ( NGC 2237 ) is a large, circular emission nebula in the constellation Monoceros. It surrounds a cluster of hot, young stars known as the Rosette Cluster ( NGC 2244 ). ( SkySafari ) NGC 2237, 2244 Caldwell 49, 50 North is up. .................. Capture Details: Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ). Corrector: ASA 2" Coma Corrector Quattro 1.175x. Effective Focal Length / Aperture : 1400mm f4.7 Mount: Skywatcher EQ8 Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2 Camera: Nikon D7500 (unmodified) (sensor 23.5 x 15.7mm, 5568x3712 @ 4.196um pixels) Location: Blue Mountains, Australia Moderate light pollution ( pale green zone on darksitefinder.com map ) Capture ( 23 Dec 2017 ) 9 sets of sub-images with exposure duration for each set doubling ( 1s to 240s ) all at ISO400. 10 x 240s + 5 each @ 1s to 120s imaged ~ +/- 1.5hrs either side of meridian maximum altitude ~ 51.3 deg above north horizon Processing ( Pixinsight ) Calibration: master bias, master flat and in-camera dark subtraction Integration in 9 sets HDR combination Image Plate Solution =================================== Resolution ........ 0.633 arcsec/px ( full size image ) Rotation .......... 0.181 deg Focal ............. 1367.90 mm Pixel size ........ 4.20 um Field of view ..... 58' 59.4" x 39' 15.0" Image center ...... RA: 06 31 55.638 Dec: +04 56 30.84 =================================== ... More information, etc., here:
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