NGC 457 The E.T. Cluster

Let's see your sketches!
Post Reply
User avatar
mariosi
Mars Ambassador
Articles: 0
Posts: 111
Joined: Wed Oct 16, 2019 11:45 am
Location: Cyprus - Mammari
Has thanked: 178 times
Been thanked: 342 times

TSS Photo of the Day

NGC 457 The E.T. Cluster

#1

Post by mariosi » Sat Nov 09, 2019 3:11 pm

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).

DAY: Friday DATE: 7/10/16 TIME: 02:00
SCOPE: Dob Sky- Watcher 10px F.L.1200/f4.7
EYEPIECE: T/S 30mm plossl 2" F.O.V.68°
LOCATION: Mammari

Thanks for looking
Marios
NGC 457.jpg
Lights off!
User avatar
bladekeeper
Co-Administrator
Articles: 0
Posts: 3016
Joined: Thu Apr 25, 2019 2:39 am
Location: Lowell, Arkansas, US
Has thanked: 9855 times
Been thanked: 5249 times

TSS Photo of the Day

#2

Post by bladekeeper » Sun Nov 10, 2019 8:56 pm

One of my favorite open clusters! Nice sketch, Marios! :)
Bryan
Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; Stellarvue SV102T f/7; iOptron MC90 f/13.3; Orion ST80A f/5; ES ED80 f/6; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
Mounts: Celestron AVX; Bresser EXOS-2; ES Twilight I; ES Twilight II; iOptron Cube-G; AZ3/wood tripod; Vixen Polaris
Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett Gemini 12×60 LW, Gordon 10×50, Apogee 20×100

Image
User avatar
Lady Fraktor
Co-Administrator
Articles: 0
Posts: 2570
Joined: Mon Apr 29, 2019 9:14 pm
Location: Slovakia
Has thanked: 5102 times
Been thanked: 3746 times

#3

Post by Lady Fraktor » Sun Nov 10, 2019 8:59 pm

Well done Marios, a fine sketch :)
Proper Telescopes: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNGDX 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen ED115s f/7.7
Mounts: Celestron AS-GT, Celestron CG-5 w/ Argo Navis & tracking motor, SLT w/ pier & tripod mods, Manfrotto 028b w/ SV M2C, Mantrotto 055Pro w/ 128RC, TAL MT1C, Vixen SXP w/ HAL-130 & half pier
Diagonal: 2" A-P Maxbright, 2" Baader Herschel Wedge (P), 2" Zeiss/ Baader Amici Prism (DX2), 2" Orion Amici Prism, 2" Stellarvue DX, 2" TeleVue EverBrite
Eyepieces: Antares to Zeiss
🇸🇰Image
User avatar
mariosi
Mars Ambassador
Articles: 0
Posts: 111
Joined: Wed Oct 16, 2019 11:45 am
Location: Cyprus - Mammari
Has thanked: 178 times
Been thanked: 342 times

TSS Photo of the Day

#4

Post by mariosi » Tue Nov 12, 2019 4:59 pm

Thank you!

Marios
Lights off!
User avatar
Thefatkitty
Milky Way Ambassador
Articles: 0
Posts: 1234
Joined: Sat May 11, 2019 4:20 pm
Location: Ontario, Canada
Has thanked: 3381 times
Been thanked: 2117 times

TSS Photo of the Day

#5

Post by Thefatkitty » Tue Nov 12, 2019 5:28 pm

This time I reminded myself it wasn't a photo... :lol: Once again Marios, well done!

All the best,
Image
User avatar
mariosi
Mars Ambassador
Articles: 0
Posts: 111
Joined: Wed Oct 16, 2019 11:45 am
Location: Cyprus - Mammari
Has thanked: 178 times
Been thanked: 342 times

TSS Photo of the Day

#6

Post by mariosi » Sat Nov 16, 2019 5:47 am

Thank you Mark for the nice feedback!

Marios
Lights off!
User avatar
pakarinen
Orion Spur Ambassador
Articles: 0
Posts: 726
Joined: Fri Jun 14, 2019 3:33 pm
Location: Illinois
Has thanked: 789 times
Been thanked: 1069 times

#7

Post by pakarinen » Fri Jan 03, 2020 7:12 pm

First time I stumbled across the cluster, I at first only noticed the two bright stars. Then as I looked more closely I thought, "Hey, wait a minute..."

Excellent sketch!
If you don't understand your noise, you cannot reliably extract a meaningful signal.
~ES

Orion ST120, Meade AdventureScope ST80
Twilight 1 with Astro Devices encoders and Nexus II currently on a Manfrotto 475B tripod
Nikon Aculon 10x50 binos
User avatar
mariosi
Mars Ambassador
Articles: 0
Posts: 111
Joined: Wed Oct 16, 2019 11:45 am
Location: Cyprus - Mammari
Has thanked: 178 times
Been thanked: 342 times

TSS Photo of the Day

#8

Post by mariosi » Sat Jan 04, 2020 4:53 am

Thank you very much!

Marios
Lights off!
Post Reply

Return to “Astronomy Sketching”