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_planets.thumb.jpg.e76f0a73fd950ae15415beb032373794.jpg

cuivenion

Advanced Members
  • Content count

    1,265
  • Joined

  • Last visited

Community Reputation

597 Excellent

3 Followers

About cuivenion

  • Rank
    Sub Dwarf

Profile Information

  • Gender
    Male
  • Location
    Morecambe

Recent Profile Visitors

2,923 profile views
  1. cuivenion

    starting over again......last night Jupiter

    Yes, but that's because the bandwidth taken up on the USB is not as much (filesize is smaller), so you can transfer more frames per second. But if you're only exposing every 30.4ms you'll only get 32.89 frames in one second. If you lower the exposure to 15ms you should get about 66fps.
  2. cuivenion

    starting over again......last night Jupiter

    Hi, It's just labelled FPS, it's in the same area as USB traffic slider at the bottom. You get there by clicking the gear symbol in the control tab. It's your exposure thats limiting your frame rate. If you lower the exposure and increase the gain your frame rate will go up. 1000ms=1 second, 1000/30.04= 32.89 frames per second, which is about what I was getting when I tested with Firecapture. Your settings will be very dependent on seeing conditions of course. I would suggest doing your checks when you're not trying to image, that way you have everything working when you need it. Good luck!
  3. cuivenion

    starting over again......last night Jupiter

    Just checked with an ASI224 with Firecapture. I had it plugged into a USB2 socket with the USB traffic at minimum. I was getting 28 FPS. 30 FPS with the USB Traffic at max. You don't need the high speed setting on at that exposure as your maximum FPS is around 30 anyway. You could try a different cable or a different USB port. Sometimes USB ports that are actually part of the motherboard perform a lot better than those that are in a seperate part of the laptop and wired to it. You don't have the FPS limit slider checked in the control section do you?
  4. cuivenion

    starting over again......last night Jupiter

    I'm a Sharpcap user that uses an ASI224. I think you may need to increase the USB Traffic Slider. If you have it at minimum (or off) in Sharpcap it will limit the FPS. If you have it set too high it can lead to dropped frames.
  5. cuivenion

    Nebula's and Galaxies 23/05/2018

    Hi Dragon, I've been thinking about your live stacking problem and there's a few possible causes, Bad focus and tracking among them. Also if you have one of the filters set to high or low it will prevent stacking. If you post a message on the Shapcap forum you'll get a good response, they're very helpful there.
  6. cuivenion

    Nebula's and Galaxies 23/05/2018

    Cheers Dragon!
  7. cuivenion

    Nebula's and Galaxies 23/05/2018

    Cheers Alan!
  8. cuivenion

    Nebula's and Galaxies 23/05/2018

    Thanks. No post processing, only colour balance and histogram stretch in Sharpcap live stacking.
  9. cuivenion

    Nebula's and Galaxies 23/05/2018

    Thanks, yes it was at 1000mm.
  10. After basically having to do major maintenance on my HEQ5 and struggling with it for quite a while, it was great to have it out last night tracking and slewing beautifully. All these images were taken with Sharpcap live stacking using a ZWO ASI224 and Skywatcher 200p. A stacked dark was used during live stacking, but no post processing. Bow Tie Nebula in Cepheus, a planetary nebula about 3500 light years away. 26 x 8s: The Bubble Nebula in Cassiopeia. 53x 8s: The Crescent Nebula in Cygnus. I didn't have a large enough FOV for this, so I just captured what nebulosity I could. 31 x 8s: The Deer Lick Group in Pegasus. I didn't frame this very well so I only captured four of the galaxies. 27 x 8s: The Iris Nebula in Cepheus. 42 x 8s: NGC 6503, dubbed the Lost In Space galaxy due to it being on the edge of the Local Void, a relatively empty expanse of space at least 150 million light years wide. 27 x 8s: NGC 6951. Galaxy in Cepheus. 60 x 8s: It was a lot of fun going from DSO to DSO. One thing I'm going to have to do and that is new darks before each target from now on. I need to be a bit more methodical in my approach. Comments and criticisms welcome as usual.
  11. Yeah the batch processing script in PI is very easy to use. Stacking, calibrating, and integrating manually in PI does take a long time but it's meant to be very flexible with a lot of options such as weighing, normalisation, drizzle etc. The batch processing script is more like using DSS.
  12. cuivenion

    Which cam

    I've used a GPCAM v1 colour for video astronomy in the past. Keep the gain at maximum when trying to stack with live stacking. I found exposures of 10-60 seconds good for deep space objects depending on their brightness. You have to make sure your focusing is accurate or you will have trouble with live stacking, its easy for you to be slightly out. When focusing on a bright star make sure your gain/exposure is low so the star is fairly faint. That way it isn't saturated and you can achieve a finer focus. You can enlarge the on screen image in Sharpcap. When focusing I enlarge it by 300-400%, if there is a small hole in the center of the star you're still out of focus. With the live stack alignment settings it will take some experimentation to find what works best with your system. I generally go with something like this: Noise Reduction: 2-3 Minimum Star Width: 3 Maximum Star Width: 32 Black Level Threshold: 50 Digital Gain: 2x - 4x This is what works for me, but my set up is different. Hopefully it will get you started though. Clear Skies!
  13. cuivenion

    M57 with ASI224

    Hi this was taken about 5 hours ago and I've been up processing. Equipment used was a Skywatcher HEQ5, 200p, ZWO ASI224 and Sharpcap for data capture. I used the live stacking feature but saved the individual files in the stack for later stacking and processing in Pixinsight. Using the various filters in the live stacking allows you to discard frames automatically with out having to search through them all. The image was unguided. 383 x 8s Lights 120 x Darks The star shapes aren't great but I think this is due to the focuser intruding into the light path. I'll have to get an adapter which will allow more out focus. Comments and criticisms welcome.
  14. cuivenion

    Focusing on Planets

    You can focus on a nearby star first, or what I do is up the gain and focus on one of Jupiters moons.
  15. cuivenion

    M51 - Lum only

    Nice image, just to let you know the official release of GIMP 2.10 is out now.
×

Important Information

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