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NGC 457 (ET Cluster)

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#1 mariosi

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Posted 08 October 2016 - 09:16 AM

NGC 457,

 

Constellation Cassiopeia
Right ascension 01h 19m 32.6s
Declination +58° 17′ 27″
Distance 7.922 kly (2.429[ kpc)
Apparent magnitude (V) 6.4
Apparent dimensions (V) 13.0′

 

NGC 457 (also known as the Owl Cluster, the ET Cluster, or Caldwell 13) is an open star cluster in the constellation Cassiopeia. It was discovered by William Herschel in 1787,and lies over 7,900 light years away from the Sun. It has an estimated age of 21 million years.The cluster is sometimes referred by amateur astronomers as the Owl Cluster, Kachina Doll Cluster,the ET Cluster (due to its resemblance to the movie character) or the "Skiing Cluster". Two bright stars, magnitude 5 Phi-1 Cassiopeiae and magnitude 7 Phi-2 Cassiopeiae can be imagined as eyes (Wikipedia).

 

Dob 10inches S/W   F.L.1200/f4.7 

T/S 30mm plossl 2inches   F.O.V.70 

Friday 7/10/16 

02:00

Mammari 

 

Thanks for looking 

Marios 

 

NGC 457.png

 

 



#2 Randolph Jay

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Posted 08 October 2016 - 09:52 AM

Wonderful, wonderful sketch of a beautiful ( and adorable ) open cluster. Also another of my favorites.
Regards,
Randolph

#3 chrysalis

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Posted 08 October 2016 - 10:01 AM

Superb sketch, well done!



#4 frank5817

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Posted 08 October 2016 - 11:09 AM

Marios,

 

This is a fine open cluster. Your sketch is an accurate capture.

Nice post.

 

Frank :)



#5 Warmvet

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Posted 08 October 2016 - 12:20 PM

Marios,

 

A favorite for me too and I was just showing it off at a star party last night. Nicely captured and realistic beauty.

 

Cindy



#6 tommy10

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Posted 08 October 2016 - 06:12 PM

Very nice sketch of this fall favorite, thanks for sharing,



#7 niteskystargazer

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Posted 08 October 2016 - 09:11 PM

Marios,

 

Very nice sketch of  NGC 457 (ET Cluster)  :) .

 

CS,KLU,

 

:thanx: ,

 

Tom



#8 mariosi

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Posted 09 October 2016 - 12:33 PM

Thank you all for the nice feedback! (Tom,Tommy, Cindy, Frank, Chrysallis,Randolph )

 

Regards 

Marios  :) 



#9 PeterDob

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Posted 10 October 2016 - 02:01 AM

Woohooo!!! Marios... you're a bit of a cluster expert, aren't you? My goodness... that's so nice... so delicate... no photo could ever compete! But what impressed me most is that I don't think you've done a lot of jiggery pokery on the computer, have you? I bow my head in respect! :bow: :bow: :bow:

 

Peter



#10 cloudbuster

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Posted 10 October 2016 - 02:34 AM

Again a very well widefield draw of this famous cluster. Nice work!

 

Regards, Martijn



#11 mariosi

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Posted 10 October 2016 - 10:09 PM

Thanks Peter and Martijn!

 

Peter, 

Scanning the sketch to the  computer, copy to the Mobil,and processing  to evert the image so the white becames black! 

For the Clusters I use one black pencil B3(soft). :) 

 

Regards 

Marios 

 

NGC 457 ET Cluster.jpg

Original sketch 

 

 

 

 



#12 PeterDob

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Posted 11 October 2016 - 05:00 AM

Yes... I thought as much. You've got an incredible talent. My sketches wouldn't nearly look as good without many hours of work on the pc... :bow: :bow: :bow:

 

Peter




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