Experimental IC 4603 and IC 4604 in LRGB, a bit of Hα as well (Uwe Deutermann)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: 5 Oph · 5 rho Oph · B42 · HD147681 · HD147888 · HD147889 · HD147932 · IC 4603 · IC 4604 · LBN 1109 · LBN 1111 · LBN 1112 · LDN 1686 · LDN 1688 · LDN 1690 · LDN 1692 · The star ρ Oph · rho Oph Nebula

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Experimental IC 4603 and IC 4604 in LRGB, a bit of Hα as well

Revision title: Taking Frank's advice into account

Powered byPixInsight

Experimental IC 4603 and IC 4604 in LRGB, a bit of Hα as well

Revision title: Taking Frank's advice into account

As the title suggests, this was more an experiment than anything else. I wanted to see if it is possible to shoot broadband in the area of the sky that is for me probably close if not completely Bortle 8. I expected strong gradients, and yes, I was not "disappointed" to find them.

I love the area around Rho Oph, to really enjoy it a much much shorter focal length is needed, but I did not want to switch the setup "just for that". So which part sticks out? Well, I think the one that I chose is maybe the area to target at 925mm, I tried once before the area around Aldebaran, but that did not turn out well at all.

The Hα part in this image is minimal, was more to get a slightly better contrast and resolution into the image, do not think though that it made a huge difference, at least I could not tell when I looked at before and after addition.

All images were shot very early in the morning. First: I know that NOW the weather will be (and indeed is) miserable, so I need to try those "summer" targets in Spring. Second: the early morning hours are definitely the darkest, so I had a slight chance to get a decent image out of it. Have a look as well to the original image, showing the full frame of this area.

Was fun to process a different target than galaxies, have to throw in here and there some of the nebulas to make me feel better 😊.
* This image was not submitted for IOTD consideration

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Title: Taking Frank's advice into account

Description: Thank you Frank, always good to follow your advices! Always open for suggestions, I know that some do more and more now, really appreciate it!

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Status	Advanced success
Started	...
Astrometry.net job	5865928
PixInsight job	GICGBAJSRSTSLQ6LBLQDNF1M5Q6H863L
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h25m27s.244
RA (top/left)	16h23m22s.432
RA (top/right)	16h23m41s.120
RA (bottom/right)	16h27m33s.959
RA (bottom/left)	16h27m11s.460

Dec (center)	-23°48′17″.19
Dec (top/left)	-22°53′49″.80
Dec (top/right)	-24°44′54″.75
Dec (bottom/right)	-24°42′41″.27
Dec (bottom/left)	-22°51′37″.55

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Experimental IC 4603 and IC 4604 in LRGB, a bit of Hα as well

Revision title: Taking Frank's advice into account

Experimental IC 4603 and IC 4604 in LRGB, a bit of Hα as well

Revision title: Taking Frank's advice into account

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Experimental IC 4603 and IC 4604 in LRGB, a bit of Hα as well

Revision title: Taking Frank's advice into account

Experimental IC 4603 and IC 4604 in LRGB, a bit of Hα as well

Revision title: Taking Frank's advice into account

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