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_celestial_motion.thumb.jpg.a9e9349c45f96ed7928eb32f1baf76ed.jpg

Sign in to follow this  
astrosathya

Rosette Nebula First Bi Colour image

Recommended Posts

Presenting my first attempt at Bi colour imaging. This is the Rosette Nebula (NGC2244), which is located in the constellation of Monoceros. 
Telescope: Orion 80ED
Mount: Sky Watcher HEQ5PRO
Camera: QHY9s Mono
Filter wheel: QHYFW2
Filters: Baader 7nm Ha, 8.5nm OIII
Exposure: 300sX30Ha, 300sX22 OIII captured on the nights of 1st and 8th January 2019
Stacked in Deep sky stacker, proceed in Pixinsight, finished in Photoshop

Rosette.jpg

  • Like 7

Share this post


Link to post
Share on other sites
Guest

Nice Sathya - great getting the first nb images and so rewarding.

I see you use PixInsight - did you use DBE on this - I think it might help with some of the lighting across the image :)

David

Share this post


Link to post
Share on other sites
On 21/01/2019 at 12:42, David_L said:

Nice Sathya - great getting the first nb images and so rewarding.

I see you use PixInsight - did you use DBE on this - I think it might help with some of the lighting across the image :)

David

I did use DBE, but I am not very good with PI i'll admit. If you could elaborate on what I could try, I'd be grateful.

Share this post


Link to post
Share on other sites
Guest
1 hour ago, astrosathya said:

I did use DBE, but I am not very good with PI i'll admit. If you could elaborate on what I could try, I'd be grateful.

Sure - Have a look at the tutorial on DBE in Light Vortex here - it's the one I used to learn PI ?

 

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.

Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By AstroRuz
      £180
      Selling a nice portable wide telescope with great glass and a great field of view
      I have two telescopes and I'm using the 80ED more currently and so this Telescope just isn't getting used anymore
      It has a longer dovetail (originally from the 80ED) so declination balance can be reached.
      Great performer for the price
      Collection only as P&P is like £40 (Northamptonshire - UK)
      Selling to fund a scope or mount upgrade.🤔
      Selling





    • By AstroRuz
      Skywatcher 150/1200 f8 planetary Newtonian.
      Bought this originally intending to set up a planetary rig but circumstances call for sale.
      Will come with eyepieces and a collimation eyepiece. Not used by myself and has seen very little use. Mirrors in good condition
      Collection only
      £50



    • By jadcx
      Skywatcher 80 ED DS-Pro outfit including matched flattener and motor focus. Now only £350
      This kit gives you a great introduction to astronomy and imaging, which is why it's so popular.  You can see details over at FLO but there is:
      80 ED Ds-Pro OTA (Objective Lens Diameter: 80mm, Telescope Focal Length: 600mm,  f/7.5)
      SW Eyepiece (2"): 28mm
      2”/50.8mm Di-Electric Star Diagonal
      9x50 Finderscope
      Dual-Speed 11:1 2” Crayford Focuser (Backlash-Free)
      Supplied with Tube Rings & Mounting Plate - please note there is a longer black vixen type dovetail fitted, not the fancy new green short one you will see on the FLO site
      SW motor focus and fitting kit - I've never used this, hence it's not fitted (more details over on FLO)
      Dedicated SW 0.85x reducer/flattener (see FLO for more details)
      Aluminium Carrying / Shipping Case
       
      The RRP is over £720, so grab a bargain while you can.
      Collection from Nottingham, or DHL for £20 (within UK)



    • By tooth_dr
      I scrapped all the Oiii and Sii data I previously took during a full moon (about 15 hours worth) and retook it all when the moon was a bit smaller at 76%.  Ha was taken during 98% and 67% moon.  All the lights were taken on the following nights: 12th, 19th and 20th September 2019.
      Integration times, all in 600s subs unbinned:
      Ha = 28.33 hours
      Oiii= = 5.67 hours
      Sii = 5.67 hours
       
      The Ha data is really nice, and unsurprisingly the Oiii and Sii is not as strong (or nice).
      I'm missing that (vital) step in my processing routine of getting the Sii and Oiii properly stretched to match the Ha, before combining.  I dont really know how to deal with the weaker data properly.  Any pointers would be appreciated.
      What I do currently:
      All the data is loaded into APP into separate channels/sessions.
      The data is stacked and registered against the best Ha sub
      This produces individual stacks of Ha, Sii and Oiii that are all registered
      Each channel is processed with DPP in APP and then saved as a 16bit TIFF
      Each is opened in PS
      Stars removed with AA and any remnants removed and tidied up
      I then open a blank RGB document in PS
      I paste Ha into Green, Sii into Red and Oiii into Blue
      Adjust the selective colour settings to get 'Hubble palette'
      Adjust levels, curves, saturation until looks ok
      All the Ha Sii Oiii data is then combined together in a single 'super' stack in APP using quality weighted algorithm to create a 'luminance'
      That luminance layer is adjusted using levels, curves, and NC tools such as local contrast enhancement and deep space noise reduction (using masks to apply as required)
      The luminance is pasted onto the above colour layer, and incrementally added using gaussian blur
      Cropped and saved.
       
       
      Here it is anyway   I haven't intended on any more exposure time for this one, but will consider it, if the expert opinion dictates otherwise!
       
      CS
      Adam
       


×
×
  • Create New...

Important Information

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