Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  IC 4605, NGC 6144, rho Oph nebula, IC 4604, IC 4603, M 4, NGC 6121, The star 22Sco, The star Antares (αSco), The star ρOph, The star Al Niyat (σSco), The star οSco
Getting plate-solving status, please wait...
Antares and Rho Ophiuchi @ 200mm, 





    
        

            Gabriel R. Santos...
Antares and Rho Ophiuchi @ 200mm

Antares and Rho Ophiuchi @ 200mm

Technical card

Resolution: 1350x899

Dates:July 23, 2014

Frames: 7x60" ISO1600

Integration: 0.1 hours

Darks: ~5

Avg. Moon age: 26.40 days

Avg. Moon phase: 10.70%

Temperature: 6.60

Astrometry.net job: 340960

RA center: 246.867 degrees

DEC center: -24.904 degrees

Orientation: 123.814 degrees

Field radius: 3.940 degrees

Description

My image of this beautiul image of the night sky. Now, a close up of this stunning Cloud Complex. The bright yellow star is Antares, Alpha Scorpii; and the blue star due left is Rho Ophiuchi. This set is, in my opinion, far from perfect.

This was planned to be a 30 minutes set (30x60s lights); but, in the 8th light frame, I unfortunately bumped into the Dew Heater Power Suply Cable. The Dew Heater was wrapped around the front element of my 70-200mm Lens... and, for my lens, around the Focus Ring. When the Dew Heater was pulled, the focus ring rotated just a bit, but the images were completely unusable. I dind't noticed until finishing the set, when the last picture was taken and I saw on my camera screen that the stars were out of focus.

So, this set became just a 7-frame set, only 7 minutes of integration! This is amost 1/5th of what would be necessary to show up the details in all those Dust Areas. The result wasn't as expected, once I had to really stretch the image to show details. But, one lesson was learned: Always take care of your's dew heater cord!

Camera: Unmodded T4i/650D at ISO 1600
Lens: Tamron 70-200mm f/2.8, at 200mm and f/3.2
Exposure Detail: 7x60s; or 7x1min; total 7 minutes.

*The -B- version of this image was stretched even more to show a bit more of details (but lots of noise)*
*The -C- version is a crop of the Antares M4 Area, in my opinion, the "best" part of my image*

Comments

Author

grsotnas
Gabriel R. Santos...
License: None (All rights reserved)
5072
Like

Revisions

  • Antares and Rho Ophiuchi @ 200mm, 





    
        

            Gabriel R. Santos...
    Original
  • Antares and Rho Ophiuchi @ 200mm, 





    
        

            Gabriel R. Santos...
    B
  • Antares and Rho Ophiuchi @ 200mm, 





    
        

            Gabriel R. Santos...
    C
  • Final
    Antares and Rho Ophiuchi @ 200mm, 





    
        

            Gabriel R. Santos...
    D

Sky plot

Sky plot

Histogram

Antares and Rho Ophiuchi @ 200mm, 





    
        

            Gabriel R. Santos...