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Found 11 results

  1. From the album: Barn door tracker (wide field)

    Another test shot for brand new lens (same night as other tests of the same lens). Again, main stars and their colors are not distinct enough. Gear: Olympus E-PL6 with Panasonic 25mm/1.7 at F/2.5 on poorly-tracked panoramic head and static tripod Capture: 16 lights x 10s x 1600 ISO, master bias Site: deep country 26km from Limoges, France Sky: good (not measured, usually SQM around 21.4) Processing: Regim 3.4, Fotoxx 12.01+

    © Fabien COUTANT

  2. wimvb

    NGC 1499

    During the few clear nights we've had lately, I've managed to get some time on the California Nebula. I thought I couldn't catch this target with my unmodded DSLR, but last fall, when I was doing some wide field, I found out that my camera picked it up. So, here's somewhat of a close up. NGC 1499 down to Atik. Imaged over 2 nights in January, a mixture of 3 & 4 minutes subs. Mount: SW EQ3-2 Goto Camera: Pentax K20D unmodded, with 135 mm f/3.5 lens @ ISO 1600, f/4 30 * 3 and 4 minutes exposures (unguided and dithered) Processed in PI. This is still a WIP, as I want to do star reduction and try to enhance the faint nebulosity that may just be visible in this image.
  3. I forgot to share this one last month. Between travel for business and brutally cold weather closing down my nearby imaging location in the mountains I have not had time to image this year. This was taken at the beginning of December and contains a very busy wide field splitting the constellations Taurus and Perseus. The better known DSO's are M45 the Pleiades reflection nebula and NGC 1499 the California emission nebula. The center of the image contains a dark nebula which I am not familiar with and the rest of the region is quite heavily laden in ISM interstellar medium dust. This image was taken with my unmodded T3i Information about this image camera: unmodded T3i ISO:1600 Exposures: 102 x 100s Darks: 5 ugh, mishap Bias:450 frame master Flats:35 Lens:SMC Pentax M* 50mm F1.7 stopped to F4 SQM: 21.1 Seeing: 3/5 Transparency:3/5 Calibrated and partially processed in Pixinsight and finished off in Photoshop CC 2017. M45 and California by Wes Schwarz, on Flickr
  4. Hi guys With the weather here in the UK being so bad recently, and with work commitments and other boring life stuff going on I haven't done much imaging lately, but I did finally manage to get out and grab some OIII data a couple of weeks ago to go with my old Ha data of NGC 1499 from back in September. The Ha data was from first light for the newly modded D5300 and Baader Ha filter. We have an outdoor sports facility only a couple of hundred yards from our house, and annoyingly the ridiculously bright floodlights don't turn off until after 10pm on weekdays, so even though there was no moon to contend with, I had no choice but to wait until the lights were off before I could start shooting the OIII. I thought about shooting more Ha while I waited, but in the end I decided to shoot some short subs without any filter, just to use for RGB stars. I stupidly didn't use my IDAS-D1 filter, and the scope ended up pointing almost directly at a streetlight for all the RGB subs. The result was a stack that had a simply insane gradient running through it, and which made gradient reduction on the stack impossible, as it was changing so much between subs. In the end I had to run gradient reduction on each individual RGB sub before stacking, and then run it again afterwards! Thankfully I only shot 20, so it wasn't too laborious. In the end I had something which, despite having a really ugly background, did at least have useable stars. As for the OIII, boy was the signal weak with this one. I'm used to dealing with weak OIII signals on the D5300a, but this one really took the biscuit! Thankfully J-P Metsavainio's tone-mappng technique allows one to get the sledgehammer out for such cases, so I was able to stretch it far enough to get something out of it (even if it doesn't yield any fine structural detail for the OIII). So this is 23 x 8 min Ha, and 9 x 20 min OIII subs. Calibrated with Flats and Bias, and dithered aggressively. The stars are made up of 20 x 90s subs. Everything shot at ISO 200. The usual gear was used, HEQ5 Pro Mount, SW 80ED (with FF/FR), guided with PHD2 and a Finder-Guider and Legacy QHY5. Captured with SGP, pre-processed in APP, and processed in PS. I have to say, I really like having the stars in a separate layer in PS. So much so, this is how I'm now going to process all my images from now on. It makes things so much easier being able to adjust whatever I want and not have to worry about constantly protecting the stars. I'm not actually finished processing this one, but I thought I'd post it up for now anyway, and update it later. I still haven't ran any noise reduction on it yet, so I need to do that next, but hopefully the final version will not look much different to this. I did have some fun playing with the colour on this one. I have noticed today though, that it looks quite different on my work Dell monitor compared to my cheap Korean one from home. I think it looks a bit duller today, but I'm just not sure! What do you guys think, does it need more or less of something in particular? All comments welcome, I'm always looking to learn! Cheers all!
  5. pixelsaurus

    SunsetCambria

    From the album: Pix pix

    Sunset Cambria, California, June 2007.

    © Mike Nicholson 2007

  6. Yoddha

    Ice and Fire

    Hello, Just got a new (secondhand) EOS 6D and decided that the area around Pleiades is very good test The first light was ruined by clouds (no surprises here) but last weekend was way better. Clear sky, no wind, temperature around -13C... So here is my image named "Ice and Fire" Very busy part of the sky between the famous Pleiades and California. Details in short: 6D (unmodified), 51x180s, ISO 2000, 10 sky flats, no darks, Samyang 85mm at f/4, EM-200, no guiding, APT dithering (direct mount control), APT, PI.
  7. wimvb

    ngc1499 reprocessed

    Reprocessed my target from last month, the California nebula. I posted the stacked but otherwise unprocessed image on the PI forum. Several people worked on it, showing what the possibilities were. I posted this as WIP before (https://stargazerslounge.com/topic/263484-ngc-1499/#comment-2887646 ) It took a while until I was pleased with star reduction and contrast, but I feel that for a better result I first have to gather more data. This one: 30 * 3 and 4 min subs @ ISO 1600 Pentax K20D (unmodified) with 135 mm lens Mount: EQ3-2 GoTo unguided Processed in PixInsight
  8. NickRose2006

    Venus Transit From San Francisco

    Here is a quick picture of the Venus transit from the San Francisco Bay Area. I did a short video with my Canon 1D MarkIII on my Celestron SP-C6 scope and stackd it in Registax.
  9. Cracking clear night last night, knew the moon was up around 22:30 so gave the 150mm lens another whirl. Subject was well placed so went for a longer session than the last. 13 x 15 mins .. Mamiya 150mm F2.8 lens @ F4, SX 694 camera and Baader 7nm HA filter - siting on the EQ8. Managed to take some subs at 4 x 4 bin which I had used to frame the object and forgot to switch back to 1 x 1 .. Also im getting strange star shapes when stacking with Registar, dark spots close to some stars, all subs were dithered too ? Will play with the processing again - this is only levels and curves. Better viewed on my flikr page below. Was great to be doing some imaging again.
  10. wxsatuser

    Pacman and California

    Caught a clear spell Thursday night, full Moon of course but gave it a go anyway. Both images 16x600secs Atik 383L+ Samyang 135mm @ f2 Astrodon 5nm Ha filter. Thanks for looking. Pacman and Gamma Cassiopeiae California Nebula
  11. drsureshmohan

    Himalayan trip astrophotos

    My mount and telescope is now located in ladakh at my friend s house and i propose to go once in two months for AP. Here are some photos from my november trip. Thanks for looking AP Mach1 FSQ 85 Canon 600d desktop.ini
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