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Observing/Photographing Dwarf Galaxy Leo 1

  • Keith g
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Hi all, I've known about this galaxy for some time - it's printed on my SkyAtlas 2000, but has anybody ever tried to observe/photograph it?

www.universetoday.com/am/publish/leo1_040906.html

The glare from Regulus (the brightest star in Leo) would be strong....and it's not that hard to find!

Keith..
If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
16 years 9 months ago #26470

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That'd be a tough cookie alright. Why not give it a lash?

Cheers

Dave
16 years 9 months ago #26472

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Replied by Keith g on topic Re:

I'd never get it just yet, I'm waiting on my C80ED-RGT :P :P

Why don't you have a go Dave??

Keith..
If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
16 years 9 months ago #26474

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:roll:

Spose so... :wink: Looks like it might clear up here - I was hoping to get out and do some PEC - if I get a chance, I slew over to Regulus and see what gives...

Cheers and thanks for the work :cry:
Dave
16 years 9 months ago #26477

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Replied by Seanie_Morris on topic Re: Observing/Photographing Dwarf Galaxy Leo 1

That would be a nice achievement alright. But, I find it hard to get my head over how this photo was taken:
This remarkable photograph was produced by astronomer, Bernhard Hubl, at his imaging site in Schlierbach, Austria over a period of three nights during mid-March, 2006. This picture required over eight hours of exposure and was produced through a four inch aperture refractor with a 2 mega-pixel astronomical camera.

1- You would think that a 2 megapixel camera could not really achieve that kind of clarity

2. It doesn't say how long each exposure was, but I am guessing that it took 3 nights (3 attempts) to do it, but the best of the 3 was used perhaps?

3. A 4 inch refractor? Wow! Amazing detail caught there! It must be tracking on an AP mount! And the 2MP camera must not be too bad after all!

Seanie.
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Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
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16 years 9 months ago #26478

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Replied by philiplardner on topic Re: Observing/Photographing Dwarf Galaxy Leo 1

I don't know if it's even possible to see Leo1 visually, but I've never been able to pick it out even with my 20" f/4 (no filters.) I suspect that the glare from Regulus is scuppering any chance I might have! It's fun trying though!

Phil.
16 years 9 months ago #26480

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Best I could do with one 120 sec exposure before the clouds rolled in. Now we know why a ton of lumiance data is required...

Cheers

Dave

16 years 9 months ago #26486

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Hi all, I've known about this galaxy for some time - it's printed on my SkyAtlas 2000, but has anybody ever tried to observe/photograph it?
The glare from Regulus (the brightest star in Leo) would be strong....and it's not that hard to find!Keith..


Not only is Leo I very challenging to image, it's also very difficult to visually observe. An open framework Newtonian scatters light from Regulus off dust, tube, focuser etc making things tricky although not impossible as I know of observers such as Tom Polakis who actually found Leo I quite easy with a 13-inch! Alistair Ling suggests well baffled refractors (presumably large ones) with spotless optics for viewing low surface brightness galaxies such as this.
Gordon

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It seems that I was born
to chart the evening sky

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16 years 9 months ago #26497

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Replied by Keith g on topic RE:

Tough one alright! Is that Regulus at the top of the image?

Keith..
If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
16 years 9 months ago #26529

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Regulus was miles away - the tiny FOV barely covers Leo1 and is small enough not to have Regulus anywhere near - but as you can see, its a very dim object... :)
16 years 9 months ago #26547

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Replied by dave_lillis on topic Re: Observing/Photographing Dwarf Galaxy Leo 1

I have to say Dave, I dont see it? :oops:
Is all that background noise the object ?
Dave L. on facebook , See my images in flickr
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Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
16 years 9 months ago #26553

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QED :D

The few stars you can see are presumably the brighter Leo1 stars. The dimmer ones are swamped by the noise. If the sky had stayed clear, I could have gopr a few more shots and stacked them, improving the S/N ratio. But as ever, the weather wasn't co-operating.

But Leo1 fills the image above - my pointing accuracy was bang on to about 10 arcseconds of the centre of Leo1.

Dave
16 years 9 months ago #26558

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Replied by dave_lillis on topic Re: Observing/Photographing Dwarf Galaxy Leo 1

:lol: fair enough.
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
16 years 9 months ago #26559

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