Andromeda Galaxy

14 years 7 months ago #24395 by Eirikg
Andromeda Galaxy was created by Eirikg
hi

just wondering how good should i see andromeda in my etx 70 scope, its verry verry faint.

This image is kinda what i see in my scope. Is this as good as it can get, or can it get better under better conditions with my scope?

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14 years 7 months ago #24396 by 11" Astrophotograph
Replied by 11" Astrophotograph on topic Andromeda Galaxy
yes Eirik.....the Andromeda Galaxy shows no detail...not even in my 12" Dob...it just looks like a faint halo :(

MR

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14 years 7 months ago #24397 by Eirikg
Replied by Eirikg on topic Re: Andromeda Galaxy
ok, that was my next question :D How it would be with a scope that gathers more light.

I was also trying for the whirlpool galaxy tonight, but couldnt see/find? it at all. But witnessed a meteor and tracked it with the scope for verry long when i was looking for whirlpool :)

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14 years 7 months ago #24398 by DaveGrennan
Replied by DaveGrennan on topic Re: Andromeda Galaxy
Eirik,

I have to disagree with comet hunter to a point. In light polluted skies M31 shows little but the central bright hub. However from reasonably dark skies (and with a larger scope) there is a lot to be discerned including two dark and some mottled features, including NGC 206 a brighter starcloud in M31. I have seen these on many occassions even in an 8 inch scope from dark skies.

The key is dark skies and M31 being reasonably high up. However in your 70mm I wouldnt expect too much.

This photo was taken with an 80mm scope (granted a semi-apochromatic refractor) but from light polluted skies. I have seen M31 not looking too dissimilar to this with a larger scope from dark skies.

webtreatz.com/component/option,com_zoom/...geNo,2/key,12/hit,1/

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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14 years 7 months ago #24400 by gnason
Replied by gnason on topic Re: Andromeda Galaxy

just wondering how good should i see andromeda in my etx 70 scope, its verry verry faint.This image is kinda what i see in my scope. Is this as good as it can get, or can it get better under better conditions with my scope?


Although a very prominent galaxy, M31 is not a particularly great sight in small telescopes with relatively small FOVs as it so large spanning a few degrees across. Binoculars and widefield scopes are better choices of instrument. I can only see the barest hint of the disk in that image and you should certainly see it much clearer (in addition to the core) with your 70mm scope under good conditions.

6-inch telescopes should show the main dust lane north of M31's core under dark skies and that's when M31 becomes more interesting. 8-inch telescopes should show the second parallel dust lane slightly further out. There's a third dust lane on the southern side of the core but that requires even more aperture.

Gordon

SDAS

Stargazer am I
It seems that I was born
to chart the evening sky

Mark Knopfler - Sailing to Philadelphia

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14 years 7 months ago #24401 by dpower
Replied by dpower on topic Re: Andromeda Galaxy
I guess this is the very reason people get into astrophotography...

IFAS web team

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14 years 7 months ago #24402 by Conor
Replied by Conor on topic Re: Andromeda Galaxy
I agree there should be amazing detail in M32 with a 12inch scope!! On Martins 8inch i remember us seeing dark dust lanes and it taking up the whole FOV as it's such a massive object. You should also be able to see M31 and M110. All 3 should be in the same FOV as i got with my 4 1/2 inch. Keep the mag low to get a better prospective

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14 years 7 months ago #24403 by albertw
Replied by albertw on topic Re: Andromeda Galaxy
I've only ever seen a faint dust lane in front of it, even in dark skies. Apart from that it still looks like a fuzzy blob, granted a bigger fuzzy blob in bigger scopes. Sure its big, and is even bright with averted vision, but there isnt that much structure to see in it I dont find.

There are many other galaxies that are much more impressive imho.

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/

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14 years 7 months ago #24404 by DaveGrennan
Replied by DaveGrennan on topic Re: Andromeda Galaxy

Apart from that it still looks like a fuzzy blob


You havent been eating your carrots Mr White!

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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14 years 7 months ago #24405 by albertw
Replied by albertw on topic Re: Andromeda Galaxy

You havent been eating your carrots Mr White!


And I'm not babysitting a 21" telescope either ;-)

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/

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14 years 7 months ago #24406 by DaveGrennan
Replied by DaveGrennan on topic Re: Andromeda Galaxy

And I'm not babysitting a 21" telescope either ;-)


ROFLMAO!!

Seriously I've seen amazing detail in an 8inch!

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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14 years 7 months ago #24407 by 11" Astrophotograph
Replied by 11" Astrophotograph on topic Andromeda
This 36" scope called "Godzilla" would definetley show loads of detail! :D http://www.scopereviews.com/page1q.html

MR

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14 years 7 months ago #24408 by Eirikg
Replied by Eirikg on topic Re: Andromeda Galaxy
ok thx for the replies, i should maybe try finding a darker observation place

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14 years 7 months ago #24409 by markdj
Replied by markdj on topic Re: Andromeda Galaxy
Eirik

You have captured a great image with your ETX70. What camera did you use and what mount did you use?

I took you image and did a very quick histogram stretch in Paint Shop Pro.



Hope you like it


Mark

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14 years 7 months ago #24413 by dave_lillis
Replied by dave_lillis on topic Re: Andromeda Galaxy
M31 is always a downer for someone starting off, its so underwhelming, especially in such a small scope. You need a dark sky, big aperture and dark adaption to see anything other then a fuzzy blob.
You'd be doing very well to se anything of M51 in a 70mm scope, sorry, its probabily not what you want to hear. :?

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

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14 years 7 months ago #24420 by johnflannery
Replied by johnflannery on topic Re: Andromeda Galaxy
I've seen the dust lane in M31 in my 20x60mm binoculars from the TAS observing site outside Tullamore. M32 and M110 very nice too.

John

John Flannery ( aurorawatcher - at * gmail - dot * com ... remove hyphens/asterisks/spaces for email)
The chicken's motive for crossing the road would not be questioned in an ideal world

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14 years 7 months ago #24421 by michaeloconnell
Replied by michaeloconnell on topic Re: Andromeda Galaxy
Due to the size of it, M31 is difficult to see detail in. The bigger the scope, the smaller the field of view. Very big scopes can't take in enough of a field of view to see the whole thing.

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14 years 7 months ago #24427 by dave_lillis
Replied by dave_lillis on topic Re: Andromeda Galaxy
you should try it with a big dob and a big eyepiece. :shock:

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

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14 years 7 months ago #24434 by Conor
Replied by Conor on topic Re: Andromeda Galaxy

The bigger the scope, the smaller the field of view. .


:? The bigger the scope the bigger the FOV.

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14 years 7 months ago #24437 by albertw
Replied by albertw on topic Re: Andromeda Galaxy

The bigger the scope, the smaller the field of view. .


:? The bigger the scope the bigger the FOV.


Depends... My 10" has a great field of view. mind you its f/4.

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/

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14 years 7 months ago #24438 by Eirikg
Replied by Eirikg on topic Re: Andromeda Galaxy

Eirik

You have captured a great image with your ETX70. What camera did you use and what mount did you use?


:oops: I wouldnt even dare try it with my equipment, the img is copy paste but made it as dark as i see it. To show you how i perceive it.

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14 years 7 months ago #24440 by Conor
Replied by Conor on topic Re: Andromeda Galaxy

The bigger the scope, the smaller the field of view. .


:? The bigger the scope the bigger the FOV.


Depends... My 10" has a great field of view. mind you its f/4.


Aye true, all depends on F. It will change if you make a scope depending on what you want it for say comet hunting or planet viewing. Though generally the bigger the scope the bigger the FOV

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14 years 7 months ago #24445 by albertw
Replied by albertw on topic Re: Andromeda Galaxy
Of course then you have the likes of Mr. Pete Lawrence taking a few shots of andromeda with his 80mm refractor

www.digitalsky.org.uk/dso/M31-2006.html

Granted, its a good 80mm refractor, but an affordable one. And by a few shots I mean 55 of at least 60 seconds each with a canon 20Da.

Originally posted by Pete on uk.sci.astronomy earlier today.

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/

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14 years 7 months ago #24446 by Jed Glover
Replied by Jed Glover on topic Re: Andromeda Galaxy

The bigger the scope, the smaller the field of view. .


:? The bigger the scope the bigger the FOV.


Depends... My 10" has a great field of view. mind you its f/4.


Aye true, all depends on F. It will change if you make a scope depending on what you want it for say comet hunting or planet viewing. Though generally the bigger the scope the bigger the FOV


I think what we are trying to say here is ;)

The bigger the scope for a given F ratio the smaller the field of view.

I feel better already!

Later,

Jed.

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14 years 7 months ago #24447 by Conor
Replied by Conor on topic Re: Andromeda Galaxy
:)

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