Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_lunar_landings.thumb.jpg.b50378d0845690d8a03305a49923eb40.jpg

Alveprinsen

Members
  • Content Count

    508
  • Joined

  • Last visited

Community Reputation

134 Excellent

3 Followers

About Alveprinsen

  • Rank
    Proto Star

Profile Information

  • Gender
    Male
  • Interests
    Fighting the Shadows.
  • Location
    Norway
  1. The time-lapse wasn't really meant to catch any meteorites. That was the main imaging camera's job. The time-lapse was more for showing friends "we were here, this is what we did..." I feel the sky is by far not dark enough yet to take any meaningfull images. In the timelapse you can see the light in the horizon the entire time. Another month or two though, and things are going to look dimmer - in a positive sense. I hope I get more windows of no moon, no wind, no clouds this season, but I'm not holding my breath. Last year I got so fed up with having so few imaging sessions pr. year I started a new hobby that does not require clear skies, no moon AND no wind: genetics & molecular biology. I'm setting up a fully functional DNA research lab in my former bedroom... See www.drn00b.com for details.. haha!
  2. Allright, it's been a year since I last posted (or something like that), and I just so happened to stop by SGL to see if there were any good shots of Perseids... Even though I've considered my efforts in imaging these a failure - I thought I might contribute with an image taken with the main imaging cam, and a timelapse of the imaging session. I imaged over the course of two hours between 00:00 and 02:00 - which I estimated to be the darkest period of the night, peaking at the darkest at 01:00. A single meteorite against a Milkyway backdrop: A timelapse of the imaging session: https://youtu.be/BS0yF0bP4_o As you can see, there is quite a bit of clouds. My image above is the only one in which there are "not too many clouds". I even had to crop out the worst of it. Main imaging camera: Modified and cooled Canon EOS 600D running at -13°c in ambient temperature of 10°c on a Vixen Polarie - imaging through a 14mm Samyang wide-angle lens at F2.4 ISO 400, 90sec exposure. Timelapse camera: Canon EOS 7D Mark II on tripod, imaging through a Sigma 10-20mm at F3.5, ISO 1600, 15sec exposures. Timelapse images edited in Adobe Lightroom CC, main image edited in Ligthroom and Photoshop. Sincerely, Alveprinsen.
  3. Oops... just noticed I didnt reply to this one. The camera is a full spectrum Canon EOS 600D from CentralDS (google'em...) The two main things about the camera is that it is full spectrum, and cooled with peltier cooling... so on a regular winter night when the outside ambient temperature is about -5 to -10 C, the chip runs at a constant -29 to -34 degrees C.. so no noise basically...
  4. No. The galaxy is placed further "up" in the image in the images from my previous session. I would most likely need to do some serious cropping... I might just do it though, to see the difference. Or perhaps I just need to up the exposures to get the faint stuff... Too bad longer exposures gets all washed out.
  5. Yeah... I got lucky with the weather tonight and managed to clock in another 8.5 hours of imaging. I am now up in a total of 13h 21 minutes. Tonight I was as usual imaging at ISO 800, with 300sec exposures. Seems the 600sec's gets too washed out. Chip temperature was running on a record low of -34C. I no longer do dark frames.... Sincerely, Alveprinsen.
  6. Another try this evening. About 6 hours worth. Same settings, -24 C. About 5 hours... I am quite a bit more happy about this one. Sincerely, Alveprinsen.
  7. So, clouds, wind and moon has gotten in the way of me... Not this time though. I managed to squeeze in around 4 hours of imaging. (before that I was imaging M82 for 6 hours...) So, the specs: ISO 800, 300sec x 49 - so roughly four hours total. Modified EOS 600D. Chip was running on a pretty much constant temperature of -24 C. Used a Baader LP filter as well... LP has gotten worse here over the last couple of years. Calibration frames: 10x flats, 10x bias, no darks... Going to invest more time in this object. Need more exposures! If only the haze and LP would go away, I could go back to doing 600 sec exposures for those fine dusty details... Sincerely, Alveprinsen.
  8. Looking good. Considered working with layers as to not over expose? Was mainly thinking of the M42 core... Not that mine is any better. I ought to have taken some shorter exposures as well....
  9. So, I had a few hours with clear skies tonight, although it seems LP and/or fog has increased severely this year... Thought I'd give it a shot at the two nebulae. Unfortunately, I find that knowing the camera framing of the image when using a newtonian is utterly confusing compared with a refractor - in which case I'd just rotate the camera to acomodate. Not being able to see my target in liveview I didnt want to bother with rotating the camera, making an exposure, rotating again... so... Here's the result after a really quick stretch and edit in Photoshop, PixInsight and Lightroom: Note however that I have had to crop out the image... This galaxy was placed rather high up in the frame of my original image as I was hoping to get that little one as well... Which is obviously did not. With a 1000mm FL this galaxy as a bit small anyway, so the detail is unfortunately not as sharp as I would have wanted. Still, was nice to do a galaxy again... Camera: Modded and cooled Canon EOS 600D Mount: NEQ6 Pro Guiding: Orion Starshoot Autoguider through a 50mm finderscope. ISO: 800 Exposures: 60 x 300s (total 5h) Calibration frames: Bias and flats, no darks. Chip temp: -19 C sincerely, Alveprinsen.
  10. Thanks! I will have to keep an eye out for this then. guess I need to go through my subs myself and delete the worst ones by hand. I will have to look into this whole sigma clip thing too... havent used that before I think - seeing as I dont even know what it is. Gonna check it out next time I stack images. hopefully this year, but... most likely in January...
  11. Its a 200mm vintage prime lens from Takumar Pentax... It has a sun-shield or whatever that is reasonably large. I've also used a dew heater on it. It is possible that stray light from the side has resulted in those large circles - most likely the outline of the sun shield? ... I dont see any other posibility.
  12. All of these will have to be thrown away. Anyhow, next chance I get I will use my LP filter, get correct focus, and get started as early as possible, letting it image from the moment M78 comes over the horizon until the moment it goes down below in the morning.
  13. And with some touchup by GradientXTerminator (downloaded less than 2 minutes ago): I wonder... what if I use this instead of PixInsight?.. hmmm...
  14. I used mighty PixInsight to excert revenge on this image: But even PixInsight is no match for the massive gradient /fail of the evening... This weekend... weather-gods permitting - I will nail this sucker to my chip!
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.