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Date: 05 Sep 2007 06:56:55
From: Anthony Ayiomamitis
Subject: B159 - Dark Nebula in Cygnus
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Dear group,
With really good conditions now prevailing with the arrival of fall
and which should last for the next three months, I sat down last night
to pursue the dark nebula B159 in Cygnus. I have checked around the
internet and I could not find a single image of this nebula. As an
added bonus, we also have a very bright and impressive carbon star (75-
Cyg) within the same field of view (far left on my image).
For the result based on four hours total exposure (LRGB @
60:60:60:60), I kindly direct you to http://www.perseus.gr/Astro-DSO-Nebulae-Dark-B159.htm
.
I have a couple of Sharpless catalog entries in my mind for the next
two evenings starting tonight.
Clear skies!
Anthony.
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Date: 05 Sep 2007 22:55:11
From: AM
Subject: Re: B159 - Dark Nebula in Cygnus
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Anthony Ayiomamitis wrote:
> Dear group,
>
> With really good conditions now prevailing with the arrival of fall
> and which should last for the next three months, I sat down last night
> to pursue the dark nebula B159 in Cygnus. I have checked around the
> internet and I could not find a single image of this nebula. As an
> added bonus, we also have a very bright and impressive carbon star (75-
> Cyg) within the same field of view (far left on my image).
>
> For the result based on four hours total exposure (LRGB @
> 60:60:60:60), I kindly direct you to http://www.perseus.gr/Astro-DSO-Nebulae-Dark-B159.htm
> .
>
> I have a couple of Sharpless catalog entries in my mind for the next
> two evenings starting tonight.
>
> Clear skies!
>
> Anthony.
>
Cool !!
Thanx for sharing !
--
AM
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Date: 05 Sep 2007 17:47:21
From: Anthony Ayiomamitis
Subject: Re: B159 - Dark Nebula in Cygnus
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On Sep 5, 10:11 pm, Thomas Womack <twom...@chiark.greenend.org.uk >
wrote:
> In article <1189000615.673852.270...@g4g2000hsf.googlegroups.com>,
> Anthony Ayiomamitis <ayiomami...@yahoo.com> wrote:
>
> >Dear group,
>
> >With really good conditions now prevailing with the arrival of fall
> >and which should last for the next three months, I sat down last night
> >to pursue the dark nebula B159 in Cygnus. I have checked around the
> >internet and I could not find a single image of this nebula. As an
> >added bonus, we also have a very bright and impressive carbon star (75-
> >Cyg) within the same field of view (far left on my image).
>
> >For the result based on four hours total exposure (LRGB @
> >60:60:60:60), I kindly direct you tohttp://www.perseus.gr/Astro-DSO-Nebulae-Dark-B159.htm
>
> How far into the infra-red does your camera go? IIRC the extinction
> is noticeably lower at 900nm than at 700nm; a frame with the IR-block
> filter removed might well be interesting for looking deeper into the
> dark.
>
> Tom
Tom,
This is an excellent idea and suggestion. I do have a Clear filter
which is non-IR-blocking already mounted on the filter wheel. I also
have a deep red Baader filter as well.
Thanks for the feedback!!!
Anthony.
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Date: 05 Sep 2007 20:11:02
From: Thomas Womack
Subject: Re: B159 - Dark Nebula in Cygnus
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In article <1189000615.673852.270460@g4g2000hsf.googlegroups.com >,
Anthony Ayiomamitis <ayiomamitis@yahoo.com > wrote:
>Dear group,
>
>With really good conditions now prevailing with the arrival of fall
>and which should last for the next three months, I sat down last night
>to pursue the dark nebula B159 in Cygnus. I have checked around the
>internet and I could not find a single image of this nebula. As an
>added bonus, we also have a very bright and impressive carbon star (75-
>Cyg) within the same field of view (far left on my image).
>
>For the result based on four hours total exposure (LRGB @
>60:60:60:60), I kindly direct you to http://www.perseus.gr/Astro-DSO-Nebulae-Dark-B159.htm
How far into the infra-red does your camera go? IIRC the extinction
is noticeably lower at 900nm than at 700nm; a frame with the IR-block
filter removed might well be interesting for looking deeper into the
dark.
Tom
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