IC63 The Ghost of Casseopia

[Trev S]

Attached is my attempt at imaging IC63 The Ghost of Casseopia. It spans an angular size of 10' and from the perspective of the Earth, IC 63 is positioned behind Gamma Cas; the closest tip to the star is located at a separation of approximately 7.5 ly. It is being sculpted by Gamma Cas. and light from the star is being scattered from the nebula.

It was imaged from my back garden in Surrey on the night of 25th November 2024 in quite poor seeing conditions.

Esprit 80mm at f5

ZWO ASI 1600MM-C camera

AZ-EQ6GT mount

Ha 30x300s (red)

Oiii 10x300s (blue)

Sii 10x300s (green)

Antlia filters

PHD2 guiding, SGPro mount and camera control

Pixinsight and PS2 processing

Thanks for looking

[Casper Dyne]

Hi Trevor

That's brilliant! Also, thanks for the set-up details. 

Casper

Sent from Outlook for iOS

---

From: croydo...@googlegroups.com <croydo...@googlegroups.com> on behalf of Trev S <trevs...@gmail.com>
Sent: Thursday, December 19, 2024 11:09:41 AM
To: croydonastro <croydo...@googlegroups.com>
Subject: [croydonastro - 7978] IC63 The Ghost of Casseopia

 

--
You received this message because you are subscribed to the Google Groups "croydonastro" group.
To unsubscribe from this group and stop receiving emails from it, send an email to croydonastro...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/croydonastro/f0e2ed49-87fb-4ae0-9644-a6b57287275cn%40googlegroups.com.

[drja...@aol.com]

Hi Trev

That's not an easy target and well done with the image given the less than ideal seeing.  

Your processing has brought out the Ghost [of Christmas past/present/future?] nicely from the background.  The widespread  nebulosity tends to de-emphasise the object of interest.  I've only imaged it once and found it difficult.  Maybe there's a parallel, with combining two sets of different length exposures, as for the stars in the core of the Orion Nebula.

James

Sent from my iPad

On 19 Dec 2024, at 11:09, Trev S <trevs...@gmail.com> wrote:



--

You received this message because you are subscribed to the Google Groups "croydonastro" group.
To unsubscribe from this group and stop receiving emails from it, send an email to croydonastro...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/croydonastro/f0e2ed49-87fb-4ae0-9644-a6b57287275cn%40googlegroups.com.

[tcos...@gmail.com]

That’s a very nice image Trev. I don’t know this particular target and have never tried to image it, although it seems to be quite high in the sky at the moment so should be an accessible target? With all the cloudy rainy weather we’ve been having lately you did very well to image it so very well done!

Tim C

--
You received this message because you are subscribed to the Google Groups "croydonastro" group.
To unsubscribe from this group and stop receiving emails from it, send an email to croydonastro...@googlegroups.com.

To view this discussion visit https://groups.google.com/d/msgid/croydonastro/786C60C5-2A53-4998-928F-E883B2C0EDF9%40aol.com.

[Trev S]

Many thanks for the kind comments.

James, yesy you're right and I will attempt your suggestion of differing exposures if we get another suitably clear sky.

[William Bottaci]

Hello Trevor
A very worthy attempt at such a difficult object to image.
What I have read of this nebula is that it's mostly hydrogen, ionised by Gamma Cassiopeiae, which also shines off it, so both emission in Ha and reflection (visible spectrum) but with this star there'll be a lot of blue as it's a hot star. So just wondering if you're getting much OIII and SII from it; how much do these two channels show?
Thanks in advance and well done on a challenging object.
Thanks for sharing.
William

[Trev S]

Hi William, Thanks for the kind comments.

Attached are stretched images to compare the amount of Ha, Oiii ans Sii that I captured for this image.  

Note that the moon was quite bright that night, which i have found tends to lessen the amount of blue captured.

You can see that the Ha was quite prominent, the Sii was very faint and the amount of Oiii in the nebula was negligible.