Jump to content

1564402927_Comet2021Banner.jpg.a8d9e102cd65f969b635e8061096d211.jpg

pietervdv

Members
  • Posts

    321
  • Joined

  • Last visited

  • Days Won

    1

Everything posted by pietervdv

  1. Thanks Maurice, you have a point there, the h-alpha in Cygnus does not seem as bright as it needs to be. The camera settings, conditions and processing were the same, however I think everything pales compared to M8 in H-alpha. I will take a look to register the images using a bigger overview of the area (thanks for the tip)
  2. See following link how to replace the filter, this describes the filter change. There are some very small and fragile connectors, so keep those hands steady.... http://www.lifepixel.com/tutorials/infrared-diy-tutorials/canon-5d-mk2-ir I have installed the Baader BCF filter instead of this infrared mod.
  3. Thanks everyone for the nice comments! I have used the standard zoom lens (F 24-105mm f/4L IS USM), the lens was set at 35mm. I stopped down to f/5.6, but still some slight coma around the edges. Best regards, Pieter
  4. Hi all, Last was i spent a week on the beautiful Canary Island La Palma. It was mostly a hiking vacation but at night I couldn't resist to photograph the Milky Way. The three panel mosaic was acquired on the peak of the Island (Roque de Los Muchachos) next to the observatory at 2400m altitude. The nightsky (and the silence) up there was the most impressive I have ever seen, the milky way seemed like a smear a white paint from horizon to horizon. I took a stripped down eq-3 in my suitcase and took this panorama with my Canon 5d mkII (modified myself with a Baader BCF filter 2 days before I left). Each panel is exposed for 1 hour (12 x 5 min at iso 1600 f/5.6) and stitched in Registar and some final tweaks in PS CS5 Hi res version here: http://www.astronomi...ic la palma.jpg Thanks for looking! Pieter
  5. Hi Maurice, I must have missed this one, fantastic! Especially considering the "short" exposure. You've got the collimation nailed I see, not easy on these fast reflectors. regards, Pieter
  6. Nice one Olly, Barnard would be proud. Good to see you have everything running smooth. Looks like you just missed the soap bubble, I feel another row at the bottom is in order!
  7. Great image Mike, I was already familiar with your work, all excellent stuff. I used your catseye tutorial aswell, was very helpfull to tweak my newton.
  8. Thanks Tom, the ota weighs about 14 kg, add to that the correcor + ccd +fw almost 16kg. The em-200 carries it, but it is riding the fence, if there is any exposure to wind it gets difficult... Best regards, Pieter
  9. Thanks! For collimation I use the Catseye tools. I use the Cheshire to collimate my centerspotted primary mirror and the Autocollimator to adjust the secondary. The catseye tools are great and way more accurate than a laser. To focus I use a Bahtinov mask, focus is critical at f/3.8
  10. Hello all, 2 weeks ago I spent another great week at Olly his place (for the 7th time already). It was the second time I visited in the winter. It was also the first light (under dark skies) for my new homebuilt Newtonian, a fully corrected 10inch f/3.8 astrograph. I used my em-200 mount and an sbig st-8300 to make the images. Guiding was done off axis with a lodestar and a TS oag9. Data reduction done in Astroart. All processing was done in PS CS5. The first target was the showpiece in Orion, M42 Exposure was 2h ( 10 min subs) for L, 1.5 for RGB (5min subs, binned 2x2), so 3.5 h in total. Bigger version: http://www.astronomi...y/M42 final.jpg The next target is probably less known, NGC 5899 in Bootes: This is a faint galaxy which has some very dim tidal streams around it. Luminance about 7h (subs 20min), RGB 2h. So about 9 h in total. The galactic cluster bottom right of the inset, stands 3.6 billion lightyears away. Bigger version: http://www.astronomi...sky/ngc5899.jpg And a pic of my setup: Thanks for looking! Best regards, Pieter
  11. Very Nice Mark! I like that Cederblad 51 very much, can you share the coordinates of it? Regards, Pieter
  12. Tom, Fantastic, incredible depth and colours. Very delicate processing too. Keep up the good work... Regards, Pieter
  13. Well, no not really, you just need loads and loads of luminance. That way you can stretch the data alot, I always copy the L layer and apply a slight high pass filter on it to bring out the contrast a bit. Apart from that all you need is get away from lightpollution ...
  14. Thanks! These one in particular was extremely faint, so I'm happy the way it turned out.
  15. Hello all, This is my first colour image since a yearlong break from my astro activities. So I joined up with 4 dutch astrophotographers and headed south to Les Granges, for the fifth time already. I had my sights set on vdb7 and 9, a very dim and rarely imaged set of dark nebulae in Cassiopeia. I have spent two full nights on this object under the pitch black skies down there. Due to the very warm nights, I could only cool to about -9°C, which shows clearly on the subs. Exposure was about 5.5 hrs worth of luminance en 1.5 h per colour, totaling 11 hours Optics: TeleVue np101is Mount: em-200 CCD: st-8300 Medium size: www.astronomie.be/pieter.vandevelde/deepsky/vdb7&9med.jpg Full size: www.astronomie.be/pieter.vandevelde/deepsky/vdb7&9full.jpg I hope you like it! Best regards, Pieter
  16. Thanks, well it can be done I guess. But I would need a very dark sky to do it again. regards, Pieter
  17. Thanks, I made an overlay in PS using the original plate from 1923. That helped a lot...
  18. Hi all, After reading an article about Variable star V1, I tried to find it on my Andromeda picture from 2 years ago. And I've got it! This star might be the most important in the history of Astronomy. Edwin Hubble discovered this star in 1923 using the 100 inch Hooker telescope at Mount Wilson, at that time the biggest telescope in the world. Hubble used this variable star to determine that the Andromeda galaxy was beyond the borders of our own Milky Way, this finding revolutionized the way astronomers look at the Universe. The image was made 2 years ago over 2 nights in Southern France under the most stable sky I have ever seen down there. (exposure around 10 hrs) Scope was the trusted TeleVue np101, ccd st 8300, mount em-200. Full size images here: med: http://www.astronomi...es_variable.jpg full: http://www.astronomi...ariable_big.jpg Enjoy! Thanks, Pieter
  19. Hi all, I snapped this one last night along the river in Illinois, US. DSLR was a Nikon D90, 10 sec exposure. Bigger size: http://www.astronomie.be/pieter.vandevelde/atmosphere/Conjunctionmoline/conjunction2012small.jpg Thanks for looking! Pieter
  20. Thanks for the suggestion, I have run them through Neatimage to clean up the noise a little. Pieter
  21. Hi Olly, Really nice, and what an exposure length! Who would've thought that such a stupid piece of plastic could fix a mount like that. Glad to hear it did the trick. many regards, Pieter
  22. Hello everyone, I was visiting Canada a couple of days ago for work. While working late at night in a field on a combine prototype, a colleague said clouds were rolling in ... I said, wow those are the Northern Lights! So I dropped everything, grabbed the Nikon D90 and shot these. I have seen them once before in Norway, and once again it felt fantastic to see them! Processing might a bit off as I am posting from a netbook. Hope you like them. full size: http://www.astronomie.be/pieter.vandevelde/atmosphere/northern%20lights%20canada/dsc_0086.jpg full size: http://www.astronomie.be/pieter.vandevelde/atmosphere/northern%20lights%20canada/dsc_0076.jpg full size: http://www.astronomie.be/pieter.vandevelde/atmosphere/northern%20lights%20canada/dsc_0075.jpg Many regards, Pieter
  23. Hi Maurice, Once again, these are truly amazing shots, really good work on the colours. Best regards, Pieter
  24. Thanks everybody, @laser_jock99 Well I am impressed with its performance, however there is some false colour at the edges. It is not a very expensive lens, but you can take care of that in PS. I would recommend to stop it down 1 or 2 stops, because otherwise the outer stars look like comets. I actually did try to make a movie from it, but I still have to find a suitable codec. I have used the programs Starstax and Timelapse to make this small movie: http://www.astronomie.be/pieter.vandevelde/startrails2011/timelapse.avi @mftoet Thanks, I have started the other processing aswell, but something must have gone wrong with my flats. But I am working on it, will keep you updated... Best regards, Pieter
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.