From Silver Streak Galaxy to the Ring.

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John Baars Netherlands
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From Silver Streak Galaxy to the Ring.

#1

Post by John Baars »


Evening of April 30, fairly transparent, cold northerly wind; the air comes from the relatively clean Atlantic Ocean and the North Sea. Bortle 7.5, pretty good for my location.

A challenge lay ahead of me in the form of NGC 4216, an extragalactic system of magnitude 10, "Silver Streak Galaxy " in Virgo. I thought it would be worth a toss. After all, I could make out one of my calibration objects for transprancy , NGC4565. My 120mm refractor was going to help me, I hoped.

The Goto snorted contentedly to the desired sky area, it was looking forward to it, as it had already surprised me several times with dead-centered objects. I'll mention them later.

The field of view showed two stars. I pulled my observing hoodie way over my head and began a minutes-long exercise to get my eye used to the dark.
Just off center of my field of view, with averted vision, there was seemingly an asterisk at 100X. At first, I did not pay enough attention to it. After a while and at higher magnification of 150X, I noticed something special about it. It was less sharply delineated than a normal star, contrast with adjacent universe was lower than for a star. Many times less brilliant. After a while I realized I was looking at the core of NGC4216! With averted vision of course.

Orientation of light around it I could not determine. However, I did see that there was something of light around it, not coming from one star, too much also for one small star. And so it remained an unusual somewhat blurred peripherally observable phenomenon with star-like core, even at higher magnifications. The designation "Star-like core" is perhaps too much honor for the faint speck. But it was there!
NGC 4216 .jpg
Click the sketch.

Satisfied, I turned the telescope to other small challenges here in town M 104, the Sombrero also in Virgo, M51 in Canes Venatici, with a side trip to the bright M 94 and M63, both also galaxies.

As Summer was approaching low in the East, I could not resist visiting a row of summer globulars. Because of its altitude above my head, M3 in Bootes won the contest. I could see individual stars in it with ease. M13 and M92 in Hercules came right behind it. While M13 was larger and quite impressive, its low position near the horizon caused it to lose the contest. I guess we'll have a different result in a few months. The ever-forgotten little but cuddly globular cluster NGC 6229, also in Hercules, closed the line.

Then a quick look at a planetary nebula NGC6210, the Turtle with immediately attached a trip to binary star SAO 84572, which is in one low power field. The turtle looks a bit square, quite bright, lends itself to super-high magnification. Nice little thing. The binary star was just barely separated with a separation of 1.2 arc seconds. Another high magnification object.


Then I decided to clean up. When I got up I could see Vega over the hedge to the east. Oh..... "even more summer"...I thought, while shivering from the cold. The Ring Nebula M57 immediately came to mind. And well, why not?

I wanted to see it with the new eyepiece I got for my birthday. A 30mm APM with 80 degrees field of view...., so a real field of view in the sky of 2.6 degrees. Distortions at the edge, ok, it's not a Nagler.

I remembered the laborious star hop to M57 in my youth, from Sheliak, with all those triangles of faint stars. In a field of view far too small. Took me several sessions to notice M57 in the urban skies. This eyepiece with this telescope showed it at a glance. What a magnificent field of stars, with the Ring Nebula near the middle as the icing on the cake! The command "Sketch!" flew through my head ( while with NGC 4216, though new, I had not felt any urge to do so). In the end I did anyway. I sank back down on my observing stool and continued to enjoy it for a long time. Nostalgia and sweet memories....
M 57  Ring nebula.jpg
Click the sketch.

Sheliak is the bright star in the left upper corner of the sketch, the Ringnebula M57 in the middle. Notice the triangles from Sheliak to M57.
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
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Re: From Silver Streak Galaxy to the Ring.

#2

Post by turboscrew »


Very nice session, and nice sketch.
@helicon, how about a VROD?
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Re: From Silver Streak Galaxy to the Ring.

#3

Post by John Baars »


Thanks Juha!
Initially, I didn't have a sketch of NGC 4216. A bit lame because it is mentioned in the title along with M57. Made it anyway. Since there was so little to see, it wasn't difficult. :D
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
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Re: From Silver Streak Galaxy to the Ring.

#4

Post by kt4hx »


Nice John and glad you were able to pick up NGC 4216. I know well and understand the constraints under which you observe in your Borlte 7 to 8 skies,. I am very impressed that you were able to pick it up and do a sketch of it no matter how weak it might have looked through the eyepiece. Interesting the contrast from your observation with the ST120 under those conditions to mine with the 17.5 inch under a Bortle 3 sky, where I see it as a quite bright and large thin elongated oval. Excellent report.
Alan

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Re: From Silver Streak Galaxy to the Ring.

#5

Post by Ylem »


Nice report and sketch John!
Clear Skies,
-Jeff :telescopewink:


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Re: From Silver Streak Galaxy to the Ring.

#6

Post by Bigzmey »


Nice session, enjoyable read and excellent sketches John! Congrats on NGC4216! Hunting galaxies under urban skies is always a challenge. For the most part seeing a faint glimpse of core is the best one can expect with smaller apertures.
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Re: From Silver Streak Galaxy to the Ring.

#7

Post by helicon »


Very nice report John and some excellent sketches there. I like the field of view sketch of M57 and also your rendering of NGC 4216. On the M57 job, it pretty well approximates what I see in my 10" Dob at the lowest power. In fact, on my first light evening with the Dob ten years ago (2012!) I enjoyed that field of view and M57 as my first DSO when I got back into the hobby after a long hiatus. As nominated by Juha I concur that a VROD is in order!
-Michael
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Re: From Silver Streak Galaxy to the Ring.

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Post by Makuser »


Hello John. A very nice observing report with the Evostar 120 ED telescope. It looks like you had great success with your planned challenge and caught some nice targets. Thanks for your well written report as well as your excellent sketches John and congratulations on receiving the TSS VROD Award today.
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Re: From Silver Streak Galaxy to the Ring.

#9

Post by messier 111 »


nice nite , thx .
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Re: From Silver Streak Galaxy to the Ring.

#10

Post by Butterfly Maiden »


A great report John and excellent sketches.

Congratulations on receiving the TSS VROD award for your effort.
Vanessa

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Re: From Silver Streak Galaxy to the Ring.

#11

Post by OzEclipse »


Hi John,

Congratulations on the VROD. I always enjoy reading your reports and examining your lovely sketches.

Kind regards

Joe
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Re: From Silver Streak Galaxy to the Ring.

#12

Post by Lady Fraktor »


A good session John and another great sketch, hopefully more observing to come for you again soon.
Gabrielle
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
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Re: From Silver Streak Galaxy to the Ring.

#13

Post by milanpicard »


Nice sketches, I always like a report with some visuals attached, thanks!
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