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A Heart for Valentine's? IC1805 and IC1795 from Petts Wood - SHORGB

Started by Roberto, Feb 07, 2024, 19:10:21

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Hello All

Just managed to fit the Heart Nebula and most of the Fish Nebula into the FoV of the Moravian C5 at 918mm EFL.  My best and last shot of this object in HaRGB was in 2005(!!!) using a Starlight-Xpress SXV-H9 and C9.25 from west London.  See below...

I wanted to complete this in narrowband but with RGB stars.  Unfortunately the FoV of my OSC camera and smaller refractor is smaller than for the C5 and larger one so had to do some processing acrobatics to get RGB stars and NB stars together (bands at top and bottom of final SHORGB image).

The NB palette was a mix of SHO and HSO.

There's a really nice looking object towards the centre left of the main nebulosity which turns out to be a recently discovered planetary nebula called WeBo1.
"This object was first noticed by Ronals F. Webbink 1995 when searching radio sources. Later it was optically reviewed by Howard E. Bond at the 0.9m Kitt Peak National Observatory."

IC1805, IC1795 - SHO with RGB stars - and WeBo1

Full details see here:  https://www.astrobin.com/2kdvrd/F/

Dates: 23 Sep 2023, 7 Nov 2023, 10 Nov 2023, 15 Nov 2023, 10 Dec 2023, 29 Dec 2023, 18 Jan 2024, 26 Jan 2024,
1 Feb 2024, 4 Feb 2024


OSC - 159×300″(13h 15′)
Astrodon H-alpha 5nm 50x50 mm: 20×1200″(6h 40′)
Astrodon OIII 3nm 50x50 mm: 20×1200″(6h 40′)
Astrodon SII 3nm 50x50 mm: 18×1200″(6h)

Integration: 32h 35′

RGB only



SHO with RGB stars

And full resolution:  https://cdn.astrobin.com/thumbs/Kkr0FALtdE6K_16536x0_UyysOTOH.jpg



That's gorgeous Roberto, especially full sized. 

Did I understand correctly that the top image was in 2005?

The planetary Nebula is amazing. 



Hi Carole

Thanks! Yes, top image is from 2005. I'll post a crop of the central region of the new one to compare later.



I just amended the above post as I didn't notice the planetary nebula when I first replied.
You must have posted at the same time.



Here's a crop of the central region (Melotte 15) at full resolution:



I love Melotte 15.  Your result with your mixed filters as per your quote
QuoteThe NB palette was a mix of SHO and HSO.
has given it a softer look than the traditional SHO. 

Just curious why you decided to do that.

The Thing


The central crop is just beautiful with a lovely starry background :D

~ Hugh