Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: ApophisAstros on May 01, 2022, 11:52:08

Title: NGC6888 Crescent Nebula HOO
Post by: ApophisAstros on May 01, 2022, 11:52:08
(https://cdn.astrobin.com/thumbs/MtHVJJLhY1_J_2560x0_jaUALzhf.jpg)
One nights data,28th April.
Narrow Band subs dithered so no darks.
William Optics RedCat 51 APO Apochromatic Quadruplet Refractor · Altair Astro Lightwave 66ED-R
Imaging Cameras
QHYCCD 183 Cooled Color · Atik 460EX Mono
Mount
Skywatcher EQ6-R PRO Synscan
Filters
Altair Astro Tri-Band OSC · baader Oiii 3.5nm · Baader Ha3.5 nm
Accessories
Aurora Eurotech Flat Panel · QHYCCD PoleMaster
Software
PixInsight 1.8 Ripley · Adobe Photoshop CS3 Extended · Astro Photography Tool
Guiding Cameras
Sky-Watcher Evoguide 50 ED
Acquisition details
Dates:
April 28, 2022
Frames:
Altair Astro Tri-Band OSC: 23x600" (3h 50') -20°C bin 1x1
Baader Ha3.5 nm: 11x900" (2h 45') -15°C bin 1x1
Baader Oiii 4.5nm 1.25: 10x600" (1h 40') -15°C bin 1x1
Integration:
8h 15'
Flats:
16
Flat darks:
16
Darks(OSC only)
20
Roger
Title: Re: NGC6888 Crescent Nebula HOO
Post by: The Thing on May 01, 2022, 16:18:05
Very nice Roger. The colour of the Crescent is unusual but nice. You should try the EZ processing star reduction script, would de-emphasise the bright sparks with minimal effort.
Title: Re: NGC6888 Crescent Nebula HOO
Post by: Carole on May 01, 2022, 16:23:22
I agree it is an unusual colour.  what subs did you actually take and how did you combine them? 

Carole
Title: Re: NGC6888 Crescent Nebula HOO
Post by: ApophisAstros on May 01, 2022, 16:42:23
Quote from: The Thing on May 01, 2022, 16:18:05
Very nice Roger. The colour of the Crescent is unusual but nice. You should try the EZ processing star reduction script, would de-emphasise the bright sparks with minimal effort.
i used star de-emphasizer in PI slightly as will reprocess when more data.

Quote 2


I agree it is an unusual colour.  what subs did you actually take and how did you combine them?
The subs are listed under Frames.. Hoo in manually combined in PS  ,
then added OSC data.

Roger
Title: Re: NGC6888 Crescent Nebula HOO
Post by: Roberto on May 01, 2022, 21:52:15
That's an excellent Crescent, Roger!  Lovely framing and looks like floating among the stars.

Roberto
Title: Re: NGC6888 Crescent Nebula HOO
Post by: ApophisAstros on May 02, 2022, 07:14:25
Thanks Roberto,
Roger