Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

IC 1805, Heart Nebula | Takahashi ε-180ED


mftoet
 Share

Recommended Posts

This is a little more than 29 hours of integration time through the new Baader Planetarium CMOS optimised Ultra-Highspeed SII (4nm), Hα (3.5nm) and OIII (4nm) filters mapped in Hubble palette. Pre-processing was done in Astro Pixel Processor. Post-processing in Adobe Photoshop. For post-processing the stars where separated from the nebulas with Russell Croman's excellent new 'StarXTerminator' plug-in.

Exposure time: 29h10' (93x 300" SII, 121x 300" Hα, 136x 300" OIII) | Optics: Takahashi ε-180ED f/2.8 | Camera: ZWO ASI294MM Pro (B 2x2, G 120, T -15 °C) | Mount: Astro-Physics Mach1 GTO | Capturing and guiding: ZWO ASIair Pro (plan mode) + ZWO ASI120MM mini | Location: Zoetermeer, Netherlands (Bortle 8, SQM ~ 18.5 magn/arcsec²) | Date: 20, 22 September, 7, 8 & 9 October 2021

i-khbKmLt-5K.jpg

  • Like 28
Link to comment
Share on other sites

Lovely Maurice. I’m glad to see the filters are working well!  I bought a set for my ε-180ED and the Oiii didn’t seem to work at all so decided to switch to OSC on the Tak.  How are you finding the new star removal software?  Any tips?

  • Like 1
Link to comment
Share on other sites

Thank you for all the wows! 
 

@tooth_dr: for this final image I saved two DDP stretched images to start with. One with a mild stretch (to preserve the stars) and one with a more intense stretch (for the nebulae). I subtracted the stars from the mildly stretched images and added them as a separate layer to more intensively stretched image. StarXTerminstor works like a charm for this procedure. 

  • Thanks 1
Link to comment
Share on other sites

I had all sorts of problems with the StarXterminator. It'd remove the stars but leave large areas of background and fill it with a base colour - no noise, just smooth - stands out like a sore thumb.

I think the issue is halos around the stars are sometimes detected as stars.

On the other hand, your image looks bloody amazing and it's done a fab job for you!

 

Thanks for sharing.

  • Like 1
Link to comment
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
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.