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.

stargazine_ep3_banner.thumb.jpg.5533fb830ae914798f4dbbdd2c8a5853.jpg

Jonesdee

The Veil Bi-Colour

Recommended Posts

Having acquired an ASI 1600MM Pro earlier in the year, this is my first attempt at a wide field Ha/OIII bicolour, using a Borg 55FL scope.  15 x 240s Ha and 15 x 240s OIII, integrated and combined in APP and edited in Star Tools.  I assigned Ha to the Red Channel and OIII to Blue and Green, but would be grateful for any tips on combining channels for bi-colour images. 

I  also tried combining with the LRGB Tool in Star Tools, assigning Ha to Red and OIII to Green, allowing STar Tools to synthesise the missing data.  The result was interesting, but did not produce the 'traditional' Red/Cyan colours of this target.

 

Apologies, maybe someone can advise how I can insert the image into this post, rather than have it as an attachment please?

Cheers

Dave

Veil Ha OIII.jpg

Edited by Jonesdee
  • Like 8

Share this post


Link to post
Share on other sites

That’s stunning. You need to upload a jpeg. A 78mb tiff file is bit much for most folks to open!

Share this post


Link to post
Share on other sites

Convert to PNG, or JPEG.

Share this post


Link to post
Share on other sites

This is the result when combined in Star Tools using the LRGB Tool with Channel Interpolation On.

 

1883260128_VeilHaOIII_2.thumb.jpg.b0462d5719be45ed0e239eab7e0a3e35.jpg

 

Not sure if it is a bit of nebulosity or Amp Glow on the right hand side.  THye uploaded images look a little different (lighter background) than on my PC!

Cheers

Dave

Edited by Jonesdee
  • Like 6

Share this post


Link to post
Share on other sites

Both look very nice to me. Good images.

I might say that I prefer orange (yellowish) / blue palette for bi color images, so second one looks a bit better to me.

Share this post


Link to post
Share on other sites

Thanks Vlad, still got a lot to learn, I'm afraid. I also like the second rendition from Star Tools, I think it shows the detail better.

 

RIght now I'm outside setting up the kit in the hope of getting a bit more data for this image :)

  • Like 1

Share this post


Link to post
Share on other sites

 Very nice, thanks  for the info on how you created the bi-colour image, as I also use APP and Startools. I have just added an OIII filter to my equipment list so will hopefully be having a go at bicolour imaging in the not too distant future.

Share this post


Link to post
Share on other sites

Thanks Tomato, I am still on a steep learning curve, but if I can help when you start processing bicolour, feel free to pm me - very happy to share the techniques I have tried.  I struggle a bit with non-linear processing in APP, but it does a marvelous job of integrating and combining channels.  The more I use Star Tools, the more I like it - seems that experimentation is key to getting the best results :) 

Cheers

Dave

  • Like 1

Share this post


Link to post
Share on other sites

Really impressed with your images.  Given my FOV I would have to do a matrix too get the image you posted, way to advanced for me.  

My shot was my first ever go at Narrow band.

 

Share this post


Link to post
Share on other sites

Hi Dave - the full Veil image was shot with my 200mm Borg 55FL which FLO was selling as an ex-demo special earlier this year.  It is a stunning little scope for wide field - originally intended for use with my Star Adventurer, but it piggy-backs very nicely on my 80mm refractor  on an HEQ5.  Would be nice to have two ASI1600s, one for each scope, but one camera at a time is enough for me right now :)

 

Dave

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • 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 knobby
      Hi all, my second attempt at imaging over multiple nights, captured 60 mins Ha and a couple of 5 mins on Oiii and Sii on Christmas evening, then added more Oii and Sii on the 30th
      Total of 60 mins Ha 25 mins Sii and 30 mins Oiii
      Hubble mapped - SII,Ha,OIII = R,G,B. The Oiii data was very noisy but I'm fairly happy overall, also the ZWO Oiii filter caused a massive ring around Alnitak when stretched !
       
      Comments welcome, I know it needs more data and I will need to learn to be more patient but the year is running out  🙂
       
      Thanks for looking and have a good 2020.
       

    • By B4silio
      I went to my family house in the countryside and was able to take some pictures during xmas eve.

      Total exposure: 6h
      H_Alpha: ~3h (730x15s) --> R, G
      Oxigen III: ~3h (710x15s) --> B, G
      I didn't have a view on Polaris and could not spend too much time drift aligning (it was xmas eve after all :D) hence the short exposures. Moreover I dont have the proper connection rings to put my flattener on my mono camera so all stars off center are a mess :_(.
    • By AstroRuz
      As new condition ultra narrowband 1.25" Baader filter. 3.5nm bandpass for nice small stars.
      Bought and loved it, but using a DSLR again and have no use for this filter.
      £140, can post.







    • By AstroRuz
      Selling my full narrowband set up for multiple reasons: I could do with the money and mono just isn't really doing it for me.
      £1000
      Includes:
      Altair Astro 183m Tec
      Baader Narrowband filters (Ha, OIII, SII and Clear)
      ZWO Electronic Mini Filter Wheel
      All associated cables/plugs
      T2 extensions to reach 55mm back focus for use with reducers
      Boxes and cases
      There is a scratch on the T2-T2 adaptor for the filter wheel and a couple of the labels on the filter boxes have been torn. But otherwise the important parts work perfectly well.
      Collection or postage via DPD.
      Buyer to pay postage and PayPal fees.
      No offers currently accepted, and I would rather not split








×
×
  • Create New...

Important Information

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