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NGC 2261,Hubble's variable nebula with technique of short exposures

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#1 exaxe

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Posted 10 April 2018 - 03:31 PM

Hi Guy's!

 

I had the idea to start an animation with several sessions spaced a week maximun but time is really blocked in France!

In the end I only have two images, one on November 19, 2017and the other on December 27, 2017. This may seem short as time limit but I was surprised to see changes of light in the nebula.

Cloud's of dust near the star cast shadows out into the nebula, and as they move the illumination changes, giving rise to the variations of light of the nebula.

 

usual material:

300mm F4

ASI224 MC

EQ6

 

Software:

Firecapture

Siril

and other decorative adjustment

 

November:

26501389447_4ef3c2cea8_c.jpg

 

and the comparison:

 

27501636098_85ff081ac2_c.jpg

 

and to finish, the animation :

353b68a4-9f83-4318-b2c6-eb885599e23b.gif

 

Stephane


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#2 rigel123

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Posted 10 April 2018 - 03:33 PM

Cool animation


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#3 Rick J

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Posted 10 April 2018 - 04:23 PM

Nicely done.

 

Rick


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#4 bill w

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Posted 10 April 2018 - 09:53 PM

great animation


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#5 james7ca

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Posted 11 April 2018 - 03:41 AM

Yes, very well done.


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#6 Terry R

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Posted 11 April 2018 - 07:20 AM

That is very cool.


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#7 BenKolt

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Posted 11 April 2018 - 10:53 AM

I don't want to use the word cool again, but actually that is very cool.  Neat demonstration through animation!

 

Ben


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#8 Mert

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Posted 11 April 2018 - 01:02 PM

Did someone already use the word cool?

Great to see the animation, really is a show!!


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#9 exaxe

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Posted 11 April 2018 - 01:54 PM

thanks guys! it's cool grin.gif



#10 jhayes_tucson

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Posted 11 April 2018 - 03:55 PM

Nicely done Stephane!   I'll have to give this one a shot someday.  Thanks for the inspiration.

 

John


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#11 exaxe

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Posted 11 April 2018 - 11:18 PM

thank you John



#12 Stargazer3236

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Posted 18 April 2018 - 07:53 AM

Hi Guy's!

 

I had the idea to start an animation with several sessions spaced a week maximun but time is really blocked in France!

In the end I only have two images, one on November 19, 2017and the other on December 27, 2017. This may seem short as time limit but I was surprised to see changes of light in the nebula.

Cloud's of dust near the star cast shadows out into the nebula, and as they move the illumination changes, giving rise to the variations of light of the nebula.

 

usual material:

300mm F4

ASI224 MC

EQ6

 

Software:

Firecapture

Siril

and other decorative adjustment

 

November:

26501389447_4ef3c2cea8_c.jpg

 

and the comparison:

 

27501636098_85ff081ac2_c.jpg

 

and to finish, the animation :

353b68a4-9f83-4318-b2c6-eb885599e23b.gif

 

Stephane

What are the details of your capture? How many frames in Firecapture? Your settings in Firecapture?



#13 exaxe

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Posted 18 April 2018 - 11:59 AM

Hi David,

 

capture parameter with FC 2.6:

Gain 450, expo:1s, 8b.

-19 November: 10500/18000 frames

-27 December:10400/21600 frames

an example of accelerated capture 25X:

https://youtu.be/6FewLi4gxOo

 

Setting:

Observer=SGo
Scope=300mm f4
Camera=ZWO ASI224MC
Filter=L
Profile=cielprofond
Date=281217
Start=031434.863
Start(UT)=031434.863
Duration=600.448s
Date_format=ddMMyy
Time_format=HHmmss
LT=UT
Frames captured=590
File type=SER
Binning=no
ROI=1304x976
ROI(Offset)=0x0
FPS (avg.)=0
Shutter=1.00s
Gain=450 (75%)
WBlue=99
Brightness=1
HardwareBin=off
SoftwareGain=10 (off)
AutoExposure=off
USBTraffic=64
WRed=66
HighSpeed=off
AutoHisto=75 (off)
Gamma=50
Histogramm(min)=0
Histogramm(max)=255
Histogramm=100%
Noise(avg.deviation)=n/a
Sensor temperature=5.1 °C
Target=cielprofond, Date: 281217, Time: 031935 UT, Mag: $MAGNITUDE, Dia: $DIAMETER, Res: $RESOLUTION, Az: , Alt: , Phase: , CM: $CM, Camera: ZWO ASI224MC, Scope: 300mm f4


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#14 GA-HAMAL

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Posted 22 April 2018 - 01:45 PM

An amazing achievement! smile.png


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#15 canukLX90

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Posted 22 April 2018 - 02:07 PM

Nicely done!  Great to see images posted that show how dynamic objects can be....not just static wallpaper.

I started to image NGC2261 in March but weather has been just awful and only got one night in.  I took some

Ha and there is some nice structure in the cloud which using your technique and more data might prove interesting.

Will have to come back to this one.

 

PJngc2261_web.jpg


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#16 exaxe

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Posted 22 April 2018 - 04:16 PM

thank you Ga,

thank you Canuk...



#17 GA-HAMAL

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Posted 22 April 2018 - 05:02 PM

I always look forward to your new imaging, just like a new good movie :smile: There is another feast for the eyes.



#18 exaxe

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Posted 24 April 2018 - 02:51 PM

thank you Ga! you are very nice !




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