Bode nebula

[Kevin Phillips]

Bode nebula taken last night or rather early hours this morning from kenely. 43 frames taken 4 min exposure. I use L pro optlong filter. Eq5 on pillar and f/9 ed celestron. It was guided using phd2. Camera was a zwoISA294 color pro tec. Moon was half. 

Kevin p

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[trevsie7]

That's a very good image Kevin

[Graham Cluer (CAS)]

Very nice Kevin

Graham Cluer

[JR]

Very good Kevin.  There's a lot of detail in the spiral arms.  I wonder if it would come out even more increasing brightness?

There are two large stars above the galaxy core.  The smaller of the two looks like it has two overlapping disks.  I don't think it's an artefact as it's the only star I can see like that.  A double star?

James

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On 11 Feb 2022, at 20:50, Kevin Phillips <thewels...@live.com> wrote:



Bode nebula taken last night or rather early hours this morning from kenely. 43 frames taken 4 min exposure. I use L pro optlong filter. Eq5 on pillar and f/9 ed celestron. It was guided using phd2. Camera was a zwoISA294 color pro tec. Moon was half. 

Kevin p

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[Kevin Phillips]

Thank you James on a rainy day when I got nothing wake to do it is the sort of thing I can ait down and work on, but I feel I need more data, maybe 5 mins exposure and do 60 plus frames

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From: 'JR' via croydonastro <croydo...@googlegroups.com>
Sent: Saturday, February 12, 2022 10:23:33 AM
To: croydo...@googlegroups.com <croydo...@googlegroups.com>
Subject: Re: [croydonastro - 7232] Bode nebula

 

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[Graham Cluer (CAS)]

Yes.  Double star HIP 48635.  9 seconds separation

Graham Cluer

[JR]

Ah ha! Well done Kevin, and you Graham for identifying it.

James

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> On 12 Feb 2022, at 11:31, Graham Cluer (CAS) <graham...@gmail.com> wrote:
>
> Yes. Double star HIP 48635. 9 seconds separation
>
> Graham Cluer
>

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[Kevin Phillips]

Sorry lost in translation, what was is double star HIP?

KEVIN 

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From: 'JR' via croydonastro <croydo...@googlegroups.com>

Sent: Saturday, February 12, 2022 11:44:13 AM
To: croydo...@googlegroups.com <croydo...@googlegroups.com>
Subject: Re: [croydonastro - 7235] Bode nebula

 

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[Graham Cluer (CAS)]

The double star that James spotted, above the galaxy core, is HIP 48635

Graham Cluer

On 12/02/2022 12:57, Kevin Phillips wrote:

HIP 48635

[Graham Cluer (CAS)]

Double star indicated on attached photo.  Zoom in and you see it is a
double.

Graham Cluer

[Tony Roberts]

The HIP reference is for the star catalogue generated by the HIPPARCOS satellite in the 1990s.

There are at least another five designations from other star catalogues but they don’t really matter to this discussion.
What does matter are the facts about the stars, as Graham stated 9 arc seconds separated and they are mag 10.47 & 10.73.

You managed in conditions more suited to flying a flag than operating a telescope, by care with your setup and skilful processing of the data, to easily split this double star.
Well done Kevin!

Tony.

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> On 12 Feb 2022, at 12:57, Kevin Phillips <thewels...@live.com> wrote:
>

[Kevin Phillips]

Thank you Tony I will check it out

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From: Tony Roberts <tony_a_...@yahoo.co.uk>
Sent: Saturday, February 12, 2022 3:05:27 PM
To: Kevin Phillips <thewels...@live.com>
Cc: croydo...@googlegroups.com <croydo...@googlegroups.com>
Subject: Re: [croydonastro - 7236] Bode nebula

 

[William Bottaci]

Yes, nice looking image, and very good guiding too, as evidenced by the PHD2 screenshot.

Galaxies being stars radiate at all wavelengths so the Optolong L Pro filter, is a good choice as it let's through the important H-alpha 656nm, OIII 496nm and 500nm, SII 672nm and H-beta 486nm. Transmission range is about 65% and the blocked 35% is where the street lights are.

Of course one could add more specialised filters, say just H-alpha 656nm, and then bring out the nebulae, and then you're in Tim's territory :).

The filter and the cooled camera is a good combination for this object, with the 900 mm length giving good reach for this galaxy.

Well done, and you're right in that a longer time with more frames will give you more to work with.
Thanks for sharing, William

On Sat, 12 Feb 2022 at 13:02, Graham Cluer (CAS) <graham...@gmail.com> wrote:
The double star that James spotted, above the galaxy core, is HIP 48635
Graham Cluer

On Sat, 12 Feb 2022 at 12:57, Kevin Phillips <thewels...@live.com> wrote:
Sorry lost in translation, what was is double star HIP?
KEVIN

On Sat, 12 Feb 2022 at 11:44, 'JR' via croydonastro <croydo...@googlegroups.com> wrote:
Ah ha!  Well done Kevin, and you Graham for identifying it.
James

On Sat, 12 Feb 2022 at 11:31, Graham Cluer (CAS) <graham...@gmail.com> wrote:
Yes.  Double star HIP 48635.  9 seconds separation
Graham Cluer

On Sat, 12 Feb 2022 at 11:22, Kevin Phillips <thewels...@live.com> wrote:
Thank you James on a rainy day when I got nothing wake to do it is the sort of thing I can ait down and work on, but I feel I need more data, maybe 5 mins exposure and do 60 plus frames

On Sat, 12 Feb 2022 at 10:23, 'JR' via croydonastro <croydo...@googlegroups.com> wrote:
Very good Kevin.  There's a lot of detail in the spiral arms.  I wonder if it would come out even more increasing brightness?
There are two large stars above the galaxy core.  The smaller of the two looks like it has two overlapping disks.  I don't think it's an artefact as it's the only star I can see like that.  A double star?
James

On Fri, 11 Feb 2022 at 23:40, Graham Cluer (CAS) <graham...@gmail.com> wrote:
Very nice Kevin
Graham Cluer

On Fri, 11 Feb 2022 at 21:32, trevsie7 <trevs...@gmail.com> wrote:
That's a very good image Kevin