Mars sketch 09-13- 2020

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John Baars Netherlands
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Mars sketch 09-13- 2020

#1

Post by John Baars »


With Mars so close to opposition, I can't resist sketching it.

Very remarkable is the bright limb here on the left. Morrning mist, I suppose?
Mars 13 sept. 2020  (680x521).jpg
If you wonder how the sketch looks that was made at the telescope:
The first one was outside, at the telescope. The second one as soon as I came in to correct a bit for the pencil stripes. In the dark is it hard to see softer stripes.
IMG_1667 (527x680).jpg
Thanks for watching!
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: Mars sketch 09-13- 2020

#2

Post by Shabadoo »


Nice!
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Re: Mars sketch 09-13- 2020

#3

Post by Greenman »


Ah, thanks to John, I thought that was an effect of my image processing... Great sketch.
Cheers,

Tony.

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Re: Mars sketch 09-13- 2020

#4

Post by Falcon 63 »


Very nice John, something I've not tackled...sketching planets.
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Re: Mars sketch 09-13- 2020

#5

Post by KingNothing13 »


Nice sketch John, thanks for sharing it.

Mars is going to be really nice the next couple of months!
-- Brett

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Re: Mars sketch 09-13- 2020

#6

Post by Unitron48 »


Really nice sketch, John! Well done!!

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Re: Mars sketch 09-13- 2020

#7

Post by helicon »


Great sketch John. I am reminded of Schiaparelli's renderings of Mars. Since opposition is so close it gives me an excuse to add a high powered eye piece or two.
-Michael
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
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Re: Mars sketch 09-13- 2020

#8

Post by John Baars »


OOOps...the Evostar is f/7.5 not f/9
Sorry.
Well, yes the finished sketch has sure some Schiaparelli characteristics.
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.
Amateur astronomer since 1970.
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Re: Mars sketch 09-13- 2020

#9

Post by Ruud »


Thanks John, it's very good!
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Re: Mars sketch 09-13- 2020

#10

Post by Bigzmey »


Excellent! The weather is not cooperating here, so no Mars views yet.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.

Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2382, Comets: 34, Asteroids: 255
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Re: Mars sketch 09-13- 2020

#11

Post by Makuser »


Hello John. You have an excellent sketch of Mars near opposition. You have recorded many nice surface details in your work. Thanks for sharing this sketch with us John, and keep looking up.
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Re: Mars sketch 09-13- 2020

#12

Post by John Baars »


Thanks all for your kind remarks.

People around me ( not here on TSS, though) who I showed this sketch asked me; "Can you see all this?"
Yes,..........well..... no........ :D
There is something about sketching planets that they should know.

The Yes, stands for all details that are sketched, yes, they were seen. In the eye of an experienced observer.

The No stands for: not with this contrast, not everything at the same time i.e. not in the wink of an eye, most of the time hidden.
Contrast is much lower, barely on the treshhold of the human eye sometimes, and seeing takes care of the fact that not all details are seen at once. Or at one time. Certain small details (most details) come and go and are not visible most of the time. The first sketch I made is just an add up of all moments of good seeing. That is why it takes an hour or more to complete such a sketch.

To illustrate it I tried to imitate the image that an inexperienced observer would see at a glance:

Here it is.
Mars 13 sept. 2020  -more realistic first glance.jpg
And this would be it. The question of the layman in the beginning of this post would be reversed: "Is this all you can see?" :shock:

An experienced observer would see the same at first glance, but after a while more details would shimmer trough. Half an hour later he/ she would see something like this. Not all details at the same time though.
Mars 13 sept. 2020  -more realistic.jpg

It is up to the artistic freedom of the sketcher to emphasize contrast. It is up to you to like the one or the other.
You can tell me, I won't be offended :lol:
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.
Amateur astronomer since 1970.
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Re: Mars sketch 09-13- 2020

#13

Post by Bigzmey »


John Baars wrote: Wed Sep 16, 2020 11:25 am Thanks all for your kind remarks.

People around me ( not here on TSS, though) who I showed this sketch asked me; "Can you see all this?"
Yes,..........well..... no........ :D
There is something about sketching planets that they should know.

The Yes, stands for all details that are sketched, yes, they were seen. In the eye of an experienced observer.

The No stands for: not with this contrast, not everything at the same time i.e. not in the wink of an eye, most of the time hidden.
Contrast is much lower, barely on the treshhold of the human eye sometimes, and seeing takes care of the fact that not all details are seen at once. Or at one time. Certain small details (most details) come and go and are not visible most of the time. The first sketch I made is just an add up of all moments of good seeing. That is why it takes an hour or more to complete such a sketch.

To illustrate it I tried to imitate the image that an inexperienced observer would see at a glance:

Here it is.
Image

And this would be it. The question of the layman in the beginning of this post would be reversed: "Is this all you can see?" :shock:

An experienced observer would see the same at first glance, but after a while more details would shimmer trough. Half an hour later he/ she would see something like this. Not all details at the same time though.
Image


It is up to the artistic freedom of the sketcher to emphasize contrast. It is up to you to like the one or the other.
You can tell me, I won't be offended :lol:
Well said John! This applies to all planets. Major features on Jupiter and Saturn could be easier to spot, but it still takes patience, skills and good seeing to resolve small details.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.

Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2382, Comets: 34, Asteroids: 255
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Re: Mars sketch 09-13- 2020

#14

Post by Lady Fraktor »


Wonderful sketches John, very well done.
Hopefully the skies will cooperate with me on my days off for some Mars viewing.
See Far Sticks: Antares Elita 103/1575, AOM FLT 105/1000, Bresser BV 127/1200, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, AXJ, AXD
Az/Alt: AYO Digi II/ Argo Navis, Stellarvue M2C/ Argo Navis
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
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Re: Mars sketch 09-13- 2020

#15

Post by mariosi »


Excellent results!
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