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.

Recommended Posts

Hello Astro Peeps, I hope everyone is all good! Isn't there some amazing images on this site and others. Amateur imaging has never been so good!

I myself have finally managed to get some data for an image, of which I am very happy. It has been so hot here it has been impossible to get any good data. One day a couple of months ago, I hung the thermometer from the grape vine under the back verandah and it was 47.5°C. Sounds far fetched, although true. I live in Adelaide, South Australia and we are 11km from the CBD and usually 1.5 degrees hotter than there!

Anyway, I thought I'd try my hand at a Ha, OIII bi-colour image while waiting for my SII data to come in. There seems to be a halo issue with some of the filters for which I will need to do further testing so I apologise for their distracting nature. Details are with the image but basically 3hrsx15min subs for each channel.

https://pbase.com/grahammeyer/image/169113477

You can scroll to the bottom to choose another size or auto to fit your screen.

 

Happy photon collecting! ?

Details for those that cannot see them.

Telescope: William Optics FLT132

Guide Scope: QHY OAG

Camera: QHY9 Mono @ -20c

Filter Wheel: QHY 7 position Ultra Slim

Filters: Baader 36mm unmounted L R G B HA OIII SII

Guide Camera: QHY5L-II

Mount: AZ-EQ6

Mount Control: EQASCOM

Focusing: SharpSky Pro and Sequence Generator Pro 3 (automated)

Bahtinov Mask: No (initial focus)

Capture Software: Sequence Generator Pro 3

Guiding Software: PHD2

Calibration and Stacking Software: PixInsight

Processing Software: PixInsight

Number and Type of Data Frames: L= X min, R= x min, G= x min, B= x min

Ha= 12x15min, SII= x , OIII= 12x15min.

Binning: 1x1

Total Image Time: 6 hrs

Location: Lockleys Observatory B, Tanunda, Sth Australia

Light Box by Exfso

 
 

NGC_3324_Ha_OIIIWeb.jpg

Edited by MeyGray3833
  • Like 3

Share this post


Link to post
Share on other sites
Guest

Beautiful example of this object and personally I think really well processed ?

What scope and camera did you use?

It sounds like the climate there is rather "toasty" LOL - is it a dry heat so that humidity isn't such a problem with sky quality.

Anyway - really well done

David

Share this post


Link to post
Share on other sites

Hi David,

Thanks for your comments. It only took about 5 complete fresh starts and a week and a bit after work etc. to get it to where I was happy with it. I know that Ha and OIII aren't meant to make natural colour!

I've added the image details in for those that cannot see it on the link provided in my original post.

Generally the heat is dry although it gets humid at times, although not really tropical. The problem is that the seeing is badly affected by the heat rise and some nights we were lucky to get below 25°C. Those nights the guide star jumps all over the place, which doubles the seeing error equaling a poor quality image. I share the obs with my brother and we both pulled out the scopes for about 5 weeks in the middle, it was near on impossible to do anything.

Some very nice stuff on your website, by the way!

Cheers and clears!

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By lalou
      Hi! I've recently acquired a new Astromodified Canon rebel XT and I've tried to take pictures of nebulas using it but I've noticed that there are these weird black artifacts that keep appearing in my images. Would like to know if anyone has experienced this before? Or are these dirt/dust specs on the camera, filter, and telescope glass? I've attached some of my edited and raw pictures for your reference. The black artifacts can already be seen in the raw image of the horsehead nebula and after stacking I think it got amplified. Anyway, advance thanks and I hope everyone's doing well.
       

    • By Nicola Hannah Butterfield
      First attempt at star cluster, this is the Beehive Cluster M44 10x 60's lights, flats, darks and bias. Canon 6D ISO 200 SW 200P NEQ6 Pro
    • By rgrickert
      Hello
      I am wondering if anyone has a suggestion that might help me
      My imaging set up is an RC reflector with an FLI proline 16803 camera and 50mm Astrodon filters (LRGB + 5nm narrow band)
      I have had a string of issues...everything from my mount had mechanical problems to my telescope had issues with the mirror cell to some family distractions...but at long last I seem to have everything working with the exception of the Astrodon Ha filter.
      Attached are representative 30minute subframes of the horse head and Pacman nebulae in Ha, SII, and OIII.  I get similar results with different objects although for bright, broad spectrum targets like M42, I will get data from the Ha filter (much as the stars shine thru on the HH and Pacman) although even that data does not comport with other imager’s Ha images of those objects. The LRGB performance appears to be normal.  My hypothesis is that this Ha filter is defective, perhaps not centered on 656.3nm
      I have contacted Astrodon and exchanged a couple of emails with Cary Chleborad seeking some help.  At first he claimed there was no issue because with enough manipulation some data could be extracted from the Ha. Later, when confronted with the other narrowband frames and the obvious difference to the Ha, at first he ghosted me, but when I said I would ask other imagers for help, he responded with a new position stating that because of the way the filters are made and their robust quality processes, it is impossible for the filter to be defective and therefore something else must be at issue.  He does not offer a suggestion of what might be the problem, nor is he interested in having me send the filter back for evaluation. Frankly, I’m more than disappointed given the premium I paid for Astrodon filters
      All that aside, and taking Cary’s position at face value, does anyone have an idea of what might cause this behavior other than the filter?  In a perfect world, does anyone live in the Austin, Texas area who would be willing to try my filter one night and see what they get with their equipment?
      The attached link is to the raw, uncalibrated files right off the camera.  I think a simple blink process in PixInsight will show what I’m talking about.
      I’m a little at my wits end, please help!
      https://www.dropbox.com/sh/60mvhzb717hdhnl/AACcAMkQdDsJuk1RU10PXvgja?dl=0
    • By maxchess
      This may be an artifact, but I took this shot of the Orion Constellation from the Canary Islands and it showed a small nebula around Beteleguse. Do you think this is real? The shot was taken with a dual band filter which brings out the Ha.  I initially assumed it was a camera artifact, but I took more shots with different camera positions and it was still there.  There are some on-line articles about such a nebula. My first reaction was to edit it out, but I think it might be real and only visible because Beteleguse has dimmed by over 50%.  What do you think?
      Max
×
×
  • Create New...

Important Information

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