Sigma Orionis

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John Donne United States of America
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Sigma Orionis

#1

Post by John Donne »


Sigma Orionis TSS.jpg
This star group was observed on two evenings.
The sky conditions were very very good and I was able to thoroughly enjoy these beautiful stars. 5 hours of total viewing over the last two evenings.

There are many beautiful doubles and clusters in Orion.
I enjoyed the efulgent nebulas M42, M43, and NGC891 as well as Nair al Said with significant nebulosity and of course the overwhelming and colorful star field Cr70 surrounding Orion's Belt.
The trapezium imbedded in M43 was pinpoint but I was only able to resolve 4 of the stars.
This is a sketch post so I will not go on, but to say the sketch is just to prove that I was there. :-)

I hope others have had equal opportunity to enjoy the stars as I have these last two nights.
Peace and clear skies to you all.
SCOPES :ES127 f7.5, SW100 f9 Evostar, ES80 F6, LXD75 8" f10 SCT, 2120 10" f10 SCT, ES152 f6.5.
MOUNTS: SW AZ/EQ5, MEADE LXD75, CELESTRON CG4, Farpoint Parallelogram.
BINOCULARS: CL 10X30, Pentax 8X43, 25X100 Oberwerks.
EP: Many.

"I am more than a sum of molecules.
I am more than a sum of memories or events.
I do not one day suddenly cease to be.
I am, before memory.
I am, before event.
I am"
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Juno16 United States of America
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Re: Sigma Orionis

#2

Post by Juno16 »


Very nice Mark!

Orion holds so many beautiful sights! Very glad that you had the opportunity to enjoy them!

Sounds like your skies were cooperating too.

Very nice report!
Jim

Scopes: Explore Scientific ED102 APO, Sharpstar 61 EDPH II APO, Samyang 135 F2 (still on the Nikon).
Mount: Skywatcher HEQ5 Pro with Rowan Belt Mod
Stuff: ASI EAF Focus Motor (x2), Orion 50mm Guide Scope, ZWO 30 mm Guide Scope, ASI 220mm min, ASI 120mm mini, Stellarview 0.8 FR/FF, Sharpstar 0.8 FR/FF, Mele Overloock 3C.
Camera/Filters/Software: ASI 533 mc pro, ASI 120mm mini, Orion SSAG, IDAS LPS D-1, Optolong L-Enhance, ZWO UV/IR Cut, N.I.N.A., Green Swamp Server, PHD2, Adobe Photoshop CC, Pixinsight.
Dog and best bud: Jack
Sky: Bortle 6-7
My Astrobin: https://www.astrobin.com/users/Juno16/
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John Baars Netherlands
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Re: Sigma Orionis

#3

Post by John Baars »


Great sketch!
Sigma Orionis is a relatively unknown star among beginners, but so beautiful that it certainly deserves the attention it receives here. Moreover, it's not really difficult to look it up. Your report is a sketch and a report in one. Plus, you've visibly had a lot of work on it! Very nice!
I suggest him as a VROD!

Something weird going on: SAO 123412 is listed as a double star of Mv 8.07 in Skysafari, so that seems to be in right order. In the well-known Italian Stelle Doppie ( double star) database, it is listed as 12.2 !....??? Maybe I need new glasses?
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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helicon United States of America
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Re: Sigma Orionis

#4

Post by helicon »


Great report Mark and as nominated, you win the VROD for today!
-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
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
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Re: Sigma Orionis

#5

Post by John Baars »


Congratulations on the VROD!
It is a great system to observe. Too all: Put it on your list when observing in Orion ( which we all gonna do this winter), you won't be disappointed!
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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John Donne United States of America
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Re: Sigma Orionis

#6

Post by John Donne »


John Baars wrote: Sat Nov 06, 2021 10:57 am Great sketch!
Sigma Orionis is a relatively unknown star among beginners, but so beautiful that it certainly deserves the attention it receives here. Moreover, it's not really difficult to look it up. Your report is a sketch and a report in one. Plus, you've visibly had a lot of work on it! Very nice!
I suggest him as a VROD!

Something weird going on: SAO 123412 is listed as a double star of Mv 8.07 in Skysafari, so that seems to be in right order. In the well-known Italian Stelle Doppie ( double star) database, it is listed as 12.2 !....??? Maybe I need new glasses?
If 123412 is a double it would not split for me.
Sigma Orionis is a very easy target. It makes a good base point to hop from to other targets in that area.

In further read this morning I found that some folks say they see no color in these stars. It was there in my view last night.
Thank you John.
SCOPES :ES127 f7.5, SW100 f9 Evostar, ES80 F6, LXD75 8" f10 SCT, 2120 10" f10 SCT, ES152 f6.5.
MOUNTS: SW AZ/EQ5, MEADE LXD75, CELESTRON CG4, Farpoint Parallelogram.
BINOCULARS: CL 10X30, Pentax 8X43, 25X100 Oberwerks.
EP: Many.

"I am more than a sum of molecules.
I am more than a sum of memories or events.
I do not one day suddenly cease to be.
I am, before memory.
I am, before event.
I am"
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John Donne United States of America
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Re: Sigma Orionis

#7

Post by John Donne »




Click on the image for best resolution and click again in Flickr for a larger image.

Galaxy Note 8
ISO 800
10 sec
Edited in the phone

This is the window through which I viewed Orion, et al. The center "alley" runs about 20 degrees between the Oak canopy from SES to SWS. It is a tight window and this sort of observing can be frustrating if one is in a hurry.
I set up and let the sky come to me... :-)
Orion moves from left to right in this image and fully revealed about 0100. I had spent from 1900 scanning with my cg4 mount, enjoying the needle point stars.
It has been a very long time since I have had stars with the perfect airy disc that revealed last night and this morning.

On Nov 4th I began this adventure in Orion but I could not split the faint southern star C in the Orionis group. That split came early this morning.
Last edited by John Donne on Sat Nov 06, 2021 5:32 pm, edited 1 time in total.
SCOPES :ES127 f7.5, SW100 f9 Evostar, ES80 F6, LXD75 8" f10 SCT, 2120 10" f10 SCT, ES152 f6.5.
MOUNTS: SW AZ/EQ5, MEADE LXD75, CELESTRON CG4, Farpoint Parallelogram.
BINOCULARS: CL 10X30, Pentax 8X43, 25X100 Oberwerks.
EP: Many.

"I am more than a sum of molecules.
I am more than a sum of memories or events.
I do not one day suddenly cease to be.
I am, before memory.
I am, before event.
I am"
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Bigzmey United States of America
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Re: Sigma Orionis

#8

Post by Bigzmey »


Great sketch Mark! Coincidently, I was splitting doubles last night with my favorite tool - SV102ED. :)
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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John Donne United States of America
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Re: Sigma Orionis

#9

Post by John Donne »


Bigzmey wrote: Sat Nov 06, 2021 5:31 pm Great sketch Mark! Coincidently, I was splitting doubles last night with my favorite tool - SV102ED. :)
I have enjoyed doubles in the past and I know this is a keen interest and pleasure for you.
I am thinking that Orion might be my primary target as the season unfolds and I can focus on Orion's doubles...maybe begin an addative post as I progress...best laid plans I know.
Of course the weather, the sky, and my joints will be the mitigating factors. It seems a nice plan.
Peace and clear skies Andrey. 👍
SCOPES :ES127 f7.5, SW100 f9 Evostar, ES80 F6, LXD75 8" f10 SCT, 2120 10" f10 SCT, ES152 f6.5.
MOUNTS: SW AZ/EQ5, MEADE LXD75, CELESTRON CG4, Farpoint Parallelogram.
BINOCULARS: CL 10X30, Pentax 8X43, 25X100 Oberwerks.
EP: Many.

"I am more than a sum of molecules.
I am more than a sum of memories or events.
I do not one day suddenly cease to be.
I am, before memory.
I am, before event.
I am"
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Bigzmey United States of America
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Re: Sigma Orionis

#10

Post by Bigzmey »


John Donne wrote: Sat Nov 06, 2021 7:19 pm
Bigzmey wrote: Sat Nov 06, 2021 5:31 pm Great sketch Mark! Coincidently, I was splitting doubles last night with my favorite tool - SV102ED. :)
I have enjoyed doubles in the past and I know this is a keen interest and pleasure for you.
I am thinking that Orion might be my primary target as the season unfolds and I can focus on Orion's doubles...maybe begin an addative post as I progress...best laid plans I know.
Of course the weather, the sky, and my joints will be the mitigating factors. It seems a nice plan.
Peace and clear skies Andrey. 👍
Congrats on the VROD Mark, well deserved! I have fascination with doubles since I was a kid. Some are breathtaking (at least to me) :)) and you can't always tell how the next pair turns out, kinda like fishing. :D

Orion certainly holds plenty. Enough to last whole winter. :) What references do you use to select binary targets?
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: Sigma Orionis

#11

Post by John Donne »


Bigzmey wrote: Sat Nov 06, 2021 8:47 pm
John Donne wrote: Sat Nov 06, 2021 7:19 pm
Bigzmey wrote: Sat Nov 06, 2021 5:31 pm Great sketch Mark! Coincidently, I was splitting doubles last night with my favorite tool - SV102ED. :)
I have enjoyed doubles in the past and I know this is a keen interest and pleasure for you.
I am thinking that Orion might be my primary target as the season unfolds and I can focus on Orion's doubles...maybe begin an addative post as I progress...best laid plans I know.
Of course the weather, the sky, and my joints will be the mitigating factors. It seems a nice plan.
Peace and clear skies Andrey. 👍
Congrats on the VROD Mark, well deserved! I have fascination with doubles since I was a kid. Some are breathtaking (at least to me) :)) and you can't always tell how the next pair turns out, kinda like fishing. :D

Orion certainly holds plenty. Enough to last whole winter. :) What references do you use to select binary targets?
Well regarding selecting a target...
I have not been very efficient in this.

I believe you recommended this book in the past and I followed your advice. But my selection is haphazard. Often it amounts to seeing first then digging to identify the objects. 😊
20211106_202718.jpg
SCOPES :ES127 f7.5, SW100 f9 Evostar, ES80 F6, LXD75 8" f10 SCT, 2120 10" f10 SCT, ES152 f6.5.
MOUNTS: SW AZ/EQ5, MEADE LXD75, CELESTRON CG4, Farpoint Parallelogram.
BINOCULARS: CL 10X30, Pentax 8X43, 25X100 Oberwerks.
EP: Many.

"I am more than a sum of molecules.
I am more than a sum of memories or events.
I do not one day suddenly cease to be.
I am, before memory.
I am, before event.
I am"
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Bigzmey United States of America
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Re: Sigma Orionis

#12

Post by Bigzmey »


John Donne wrote: Sun Nov 07, 2021 1:35 am Well regarding selecting a target...
I have not been very efficient in this.

I believe you recommended this book in the past and I followed your advice. But my selection is haphazard. Often it amounts to seeing first then digging to identify the objects. 😊

Image
This is one of my favorites. It does not have star charts, but SkySafari takes care of that. :)
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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Makuser United States of America
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Re: Sigma Orionis

#13

Post by Makuser »


Hi Mark. A very nice report of your journey around Sigma Orionis. There is a plethora of great objects to enjoy in this area. Thanks for your well written report and sketch Mark and congratulations on receiving the TSS VROD Award today.
Marshall
Sky-Watcher 90mm f/13.8 Maksutov-Cassegrain on motorized Multimount
Orion Astroview 120ST f/5 Refractor on EQ3 mount
Celestron Comet Catcher 140mm f/3.64 Schmidt-Newtonian on alt-az mount
Celestron Omni XLT150R f/5 Refractor on CG4 mount with dual axis drives.
Orion 180mm f/15 Maksutov-Cassegrain on CG5-GT Goto mount.
Orion XT12i 12" f/4.9 Dobsonian Intelliscope.
Kamakura 7x35 Binoculars and Celestron SkyMaster 15x70 Binoculars. ZWO ASI 120MC camera.
>)))))*>
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