The insanely faint...

[ollypenrice]

NGC5907 is a nice edge-on spiral of respectable size on the sky, quite like the better known, and more often imaged, edge-on spirals NGC891 and NGC 4565. But, and this is a big 'but,' R Jay GaBany has detected tantalizing loops of relic stellar tidal streams around the galaxy. Are these accessible to more mortal telescopes? We've spent three initial nights on this and we think the answer is 'yes.' We already have good evidence of one part of R Jay GaBany's streams. We are not going to replicate his image, that's for sure, but finding traces of something exotic is darned good fun. Wish us luck!

Olly

[JemC]

Good luck with that Olly, 

Look forward to seeing what you come up with,

James

[pipnina]

15 minutes ago, ollypenrice said:

NGC5907 is a nice edge-on spiral of respectable size on the sky, quite like the better known, and more often imaged, edge-on spirals NGC891 and NGC 4565. But, and this is a big 'but,' R Jay GaBany has detected tantalizing loops of relic stellar tidal streams around the galaxy. Are these accessible to more mortal telescopes? We've spent three initial nights on this and we think the answer is 'yes.' We already have good evidence of one part of R Jay GaBany's streams. We are not going to replicate his image, that's for sure, but finding traces of something exotic is darned good fun. Wish us luck!

Olly

I love images of the exceptionally faint, and sometimes unknown. If I had access to perfect skies and a good imaging setup I think I would spend very little time imaging the well-known targets...

[Stub Mandrel]

Titillation!

We demand a preview ?

[Davey-T]

Blimey that is faint, I can't even see the picture 

Dave

[gorann]

The best of luck Olly & Co - look warward to a progress report with an image!

[Moonshane]

Amazing

[ollypenrice]

20 hours ago, Moonshane said:

Amazing

Is that GaBany's image? (I think we should be careful with ownership here.) Anyway, prepare to be significantly less amazed by ours!!! None the less I've learned several things of interest today regarding how to extract the faintest stuff from what lies deeply buried within our data. Every day's a school day and my collaborator this week is a string theorist so if it comes to sums I'm in there with the best!!!

Prepare to be underwhelmed...

lly

[Stu]

2 hours ago, ollypenrice said:

Is that GaBany's image? (I think we should be careful with ownership here.)

Shane’s link goes through to the APOD site Olly, it is Gabany’s image. All the details of the image are here.

https://apod.nasa.gov/apod/ap080619.html

[kens]

On 13/09/2018 at 07:40, Moonshane said:

Amazing

Calibration should sort out that mess

[Moonshane]

Sorry yes I should have made it clear although as Stu says it links through when you click it

[Stub Mandrel]

11 hours ago, kens said:

Calibration should sort out that mess

You have to wonder if someone stood in front of the scope whirling a glow-stick on a string ?

[JamesF]

19 minutes ago, Stub Mandrel said:

You have to wonder if someone stood in front of the scope whirling a glow-stick on a string ?

I was actually wondering if chasing the insanely faint doesn't result in one becoming faintly insane

James

[wimvb]

The Gabany image shows that it's indeed "insanely faint", because the APOD show every sign of data being pushed passed its limit.

There's also this version, with the tidal stream showing in the superstretched luminance, and only barely in the colour image:

http://www.distant-lights.at/ngc5907-2012_04_18.htm

(21 hours with a dslr)

On 12/09/2018 at 20:29, ollypenrice said:

We've spent three initial nights on this and we think the answer is 'yes.'

With the TAK? That would probably be a first. So far, I've only seen reflector images of this target.

[pipnina]

35 minutes ago, wimvb said:

The Gabany image shows that it's indeed "insanely faint", because the APOD show every sign of data being pushed passed its limit.

There's also this version, with the tidal stream showing in the superstretched luminance, and only barely in the colour image:

http://www.distant-lights.at/ngc5907-2012_04_18.htm

(21 hours with a dslr)

With the TAK? That would probably be a first. So far, I've only seen reflector images of this target.

I can only imagine what it could look like if someone dual-scoped that for 100hrs plus (i.e. 200hr combined integration)...

[wimvb]

3 minutes ago, pipnina said:

I can only imagine what it could look like if someone dual-scoped that for 100hrs plus (i.e. 200hr combined integration)...

The Gabany image was captured using this scope:

https://www.officinastellare.com/professional-telescopes-prod/prorc/prorc500.html

It is located high up on a mountain in Nevada where seeing is supposedly exceptional.

A dual rig would probably look something like this:

https://telescopes.net/store/asa-ddm160-direct-drive-twin-mount-only.html

Not quite mere mortal telescopes. ?

[pipnina]

5 minutes ago, wimvb said:

The Gabany image was captured using this scope:

https://www.officinastellare.com/professional-telescopes-prod/prorc/prorc500.html

It is located high up on a mountain in Nevada where seeing is supposedly exceptional.

A dual rig would probably look something like this:

https://telescopes.net/store/asa-ddm160-direct-drive-twin-mount-only.html

Not quite mere mortal telescopes. ?

Indeed not... A single half-metre RC can cost as little as £13'000 or more than £20'000...

I think that knowledge really puts the image into perspective.

[ollypenrice]

14 hours ago, wimvb said:

The Gabany image shows that it's indeed "insanely faint", because the APOD show every sign of data being pushed passed its limit.

There's also this version, with the tidal stream showing in the superstretched luminance, and only barely in the colour image:

http://www.distant-lights.at/ngc5907-2012_04_18.htm

(21 hours with a dslr)

With the TAK? That would probably be a first. So far, I've only seen reflector images of this target.

No, the image scale requires the TEC140. I've posted the result in the DS imaging section but here it is for completeness. It does resemble the result from your distant lights link.

Olly

 

 

[wimvb]

4 hours ago, ollypenrice said:

No, the image scale requires the TEC140

So far I haven't seen the streams imaged with a refractor. That's still a first then. That supports your point of view in the Astronomy Now article.