Mars sketch 09-13- 2020
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Mars sketch 09-13- 2020
Very remarkable is the bright limb here on the left. Morrning mist, I suppose?
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.
Thanks for watching!
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.
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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
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Re: Mars sketch 09-13- 2020
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Re: Mars sketch 09-13- 2020
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Re: Mars sketch 09-13- 2020
Mars is going to be really nice the next couple of months!
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Re: Mars sketch 09-13- 2020
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Re: Mars sketch 09-13- 2020
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Re: Mars sketch 09-13- 2020
Sorry.
Well, yes the finished sketch has sure some Schiaparelli characteristics.
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
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Re: Mars sketch 09-13- 2020
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
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Re: Mars sketch 09-13- 2020
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Re: Mars sketch 09-13- 2020
People around me ( not here on
Yes,..........well..... no........
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. 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?"
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.
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
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
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.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........
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.
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?"
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.
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
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, Delos, 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.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Mars sketch 09-13- 2020
Hopefully the skies will cooperate with me on my days off for some Mars viewing.
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