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Astrophotography and Sketching >> Sketching

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Achernar
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Asterism and galaxy new
      #3398824 - 10/19/09 07:47 PM Attachment (16 downloads)

Last weekend I came across this asterism and galaxy in eastern Delphinus. Apparently Sue French, the author of "Deepsky Wonders" in Sky and Telescope magazine came across it and described it in a recent issue. The asterism really does look like an Alice in Wonderland toadstool. The galaxy NGC-7025 is very easy to make out despite it's small size and apparent magnitude of 13 from the light polluted and hazy Gulf Coast skies with a 10-inch.

Taras

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15-inch F/4.5 Dob under construction
10-inch F/4.5 Discovery Dob
6-inch F/8 Homebuilt Dob
4 1/4-inch F/4 Homebuilt reflector
A whole bunch of eyepieces, filters and other accessories....
Two curious cats


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cildarithModerator
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Re: Asterism and galaxy new [Re: Achernar]
      #3400897 - 10/20/09 07:27 PM

Excellent sketch, Taras!

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Eric
6" f/6 Parks Newtonian
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frank5817
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Re: Asterism and galaxy new [Re: cildarith]
      #3401201 - 10/20/09 10:25 PM

Taras,

This sketch looks great. I searched for this galaxy many years ago and never located it. Maybe it's time to try again. Very nice !

Frank

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Achernar
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Re: Asterism and galaxy new [Re: frank5817]
      #3401343 - 10/20/09 11:44 PM

Thanks fellas. The galaxy is easier to see than I expected, but being small and condensed made this 13th magnitude galaxy easier than others I looked for. The nearby NGC-6928 and 6930 were definitely harder to find than this one.

Taras

--------------------
15-inch F/4.5 Dob under construction
10-inch F/4.5 Discovery Dob
6-inch F/8 Homebuilt Dob
4 1/4-inch F/4 Homebuilt reflector
A whole bunch of eyepieces, filters and other accessories....
Two curious cats


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JayinUT
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Re: Asterism and galaxy new [Re: Achernar]
      #3401373 - 10/21/09 12:15 AM

Taras,

Great sketch of the asterims and I had to take a second look for the galaxy and it really stood out. Now if I could get the skies to clear here I'd take a look for it. Did you try for NGC 6905 the Blue Flash Planetary?

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Jay in Utah
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JayKSC
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Re: Asterism and galaxy new [Re: Achernar]
      #3401748 - 10/21/09 09:08 AM

It's good to see someone else sketching from less than ideal skies - thanks for sharing this fine sketch. I'll need to have a look for this asterism the next it's clear here. The galaxy, though, will be a no-go given my aperture!

- Jay
South Florida

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Achernar
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Re: Asterism and galaxy new [Re: JayinUT]
      #3401781 - 10/21/09 09:27 AM

I've seen it a number of times. It's not an easy object for a 6-inch, but it's doable. I've found it a lot easier to see with a 10-inch, but I never saw any hint of a bluish color in it. It's a gray fuzzy disk to me. I didn't look for it at the time I made this sketch, I was looking for galaxies in the general area.

Taras

--------------------
15-inch F/4.5 Dob under construction
10-inch F/4.5 Discovery Dob
6-inch F/8 Homebuilt Dob
4 1/4-inch F/4 Homebuilt reflector
A whole bunch of eyepieces, filters and other accessories....
Two curious cats


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JakeSaloranta
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Re: Asterism and galaxy new [Re: Achernar]
      #3401855 - 10/21/09 10:14 AM

This is indeed a funny asterism in Delphinus. It was apparently first noted by Sue French or Bruno Alessi back in 1997.

There is also French 2 (HD 88063-Group) in Hydra and French 3 (=Czernik 40?) in Vulpecula.

/Jake


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Achernar
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Re: Asterism and galaxy new [Re: JakeSaloranta]
      #3402078 - 10/21/09 12:23 PM

Yup, and it looks like a funny looking mushroom too, like the death angel mushrooms in my area. They look funny, but they're incredibly toxic.

Taras

--------------------
15-inch F/4.5 Dob under construction
10-inch F/4.5 Discovery Dob
6-inch F/8 Homebuilt Dob
4 1/4-inch F/4 Homebuilt reflector
A whole bunch of eyepieces, filters and other accessories....
Two curious cats


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CarlosEH
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Re: Asterism and galaxy [Re: Achernar]
      #3403524 - 10/22/09 12:57 AM Attachment (2 downloads)

Taras,

An excellent observation of an interesting asterism and faint galaxy. Sue French's discovery is an interesting one and it does have the appearance of a "toadstool." Thank you for sharing it with us all.

Attached image of Delphinus and NGC 7025 from Stellarium.

http://zlg.kepu.gov.cn/zlg/yuzhou/images/ngc/ngc8/n7025.jpg

Carlos

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