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Showing content with the highest reputation on 18/03/18 in all areas

  1. 7 points
    This is my first ever M51. 50s subs 20Lx15Dx10B (still not flats). Taken with a Nikon D7200 at ISO 1600 on a SWED80+0.8FR. Processed with PI and a little PS. I quite pleased with the results and wanted to share although I know it can be better :-) Thanks for watching!
  2. 3 points
    Really chuffed with my first ever DSO image. Next time I'll be guiding for longer exposures and much more detail and include dark and flat frames to reduce noise. Thanks to Stephen Olson for all his help. Messier 51 (M51) Whirlpool Galaxy and it's companion NGC 5195. 10/03/18, Heald Green, Nr. Manchester (Bortle 8) Location- Canes Venatici Distance- 31 million light years Diameter- 60,000 light years Magnitude- 8.4 Scope- Explore Scientific ED80 (ES Field flattener) Mount- SW NEQ6 Pro Synscan Camera- Canon 600d (unmodified) Unguided 5x 30 sec 27x 25 sec ISO 800 Stacked in DSS and processed in PS.
  3. 1 point
    A great M51 there, it's nice to see these galaxies with plenty of space, literally, around them. The great expanse
  4. 1 point
    Just did a little bit more processing on this image seems a little less blue now and a bit crisper.
  5. 1 point
    Venus and Uranus will be in conjunction, less than 4' apart, close enough to fit within a low power telescopic view. It will be a challenge to see Uranus at magnitude 5.9 in the evening twilight. Use Venus as your guide. A great astrophotography event!
  6. 1 point
    Thanks John--I solved this issue....thank god. Rodd
  7. 1 point
    I've so far grabbed 7h of exposure on M96 - concentrating on the L channel so far. Surpisingly, M96 doesn't seem to be imaged very much as far as I can see - at least in close up (the wide 95/96/105 combo is popular though!). It does have some lovely dust going on near the core. This winter/spring has been quite poor really for me so far - some clear skies would be much appreciated so I could try and get colour data to add to this: I think this would add a lot to the image as it'll give colour differential to the bright knots in the centre and outer regions of the galaxy - brightness-wise they are fairly similar, but may stand out better in RGB. The outer reaches are also quite faint and hard to pull out any more than this; though the transparency wasn't great the other night, I think I'd need darker skies and/or much more exposure to get more out of it (or a more sensitive camera than the KAI-2020). I have however, pushed my current distance record (though not particularly trying to go as far as I can yet...) - QSO SDSS J104619.26+115223.4 is clearly visible at mag 20.5 (r band) - this has a redshift of ~2.83 which puts it about 11.4 billion light years away. Simbad data: http://simbad.u-strasbg.fr/simbad/sim-id?Ident=SDSS+J104619.26%2B115223.4&NbIdent=1. Also at the faint end (just!!) is the small dwarf Leo 15 (in the Leo/M96 group - http://simbad.u-strasbg.fr/simbad/sim-id?Ident=[FS90]+Leo+15&NbIdent=1) - this is diffuse and at Mag(B) ~19... Image details: 350mm Newt (1584mm fl), ST2000XM, 84x5min. (22/02/18 and 13-14/03/18) Reduction/Processing in PI. South is ~ up. Thanks for looking! Annotation with the quasar mentioned marked up along with Leo 15 (there's another couple of QSO at z= 2.40 (mag_r=21.1!) and z=2.43 for the interested reader who fancies finding them....):
  8. 1 point
    Beautiful images there, and what makes them nicer for me is they are ones we don't see ever day because of where you are. Did you actually find the SN, I did read the post?
  9. 1 point
    Lovely clear sky - got 8SE from shed, set up, aligned on Betelgeuse and Procyon at 7.25pm. As usual, ran a test of GoTo on a familiar target, M67 King Cobra (open) Cluster in Cancer - small, dense, dozens of clear stars (and many more less so), very nice. Target for the evening was Leo galaxies, starting with M105 (face-on elliptical) - a very pale, fuzzy patch, south of HIP 52683 and (to east) the close pair HIP 52744/6. Transparency was getting poorer by now, but AV helped me pinpoint the galaxy, as did moving (with motors) and tapping the 'scope. I then tried for the Leo Quartet (or some of them anyway) - got the right region, west of a parallelogram of stars, so knew exactly where to look for NGC 3190. Tried tapping and AV again, also increasing the mag, and dropping it to x48 for more exit pupil, all to no avail. A glance at the sky showed why: extensive cloud cover! So an encouraging start stalled this time out. But there's usually something on show even with lots of thin cloud about: La Superba, Y CVn, one of the brightest carbon stars - very orange indeed! And.... M35 in Gemini - another compact open cluster, similar in appearance to M67, also very nice, and with NGC 2158 OC immediately SW, comprising about eight stars. Then finished after 1 hour 20 minutes - not quite what I'd planned/hoped for, but still very satisfying. Doug.
  10. 1 point
    Okay...confession time! I have never attempted a classical drift alignment ( ahh....I feel better for getting that off my chest). Until last year I had neither an Eastern nor a Western horizon...our house blocks the west completely and trees blocked the east, so the process as far as I understand it wasn't possible. Last spring we had the tree surgeon round who removed the offending Leylandi jungle! So although I had a bunch of extremely unhappy neighbours, I do at least now have a reasonable view of the Eastern horizon. It's only since then, that I have been able to perform a PHD polar alignment, requiring an eastern or western horizon. Having followed this thread, I reviewed the classical,drift alignment process, which admittedly does look pretty easy. Question is...how accurate would it be for me as I can not see a western horizon? Steve
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