Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Rocket Pooch on Dec 27, 2004, 11:10:00

Title: Ha & OIII M42
Post by: Rocket Pooch on Dec 27, 2004, 11:10:00
I have no idea what I'm doing with colour but here's a first go at Ha and OIII imaging.


(http://www.jumpers4goalposts.org.uk/images/Astronomy/Messier/M42-colour.jpg)
Title: Ha & OIII M42
Post by: Whitters on Dec 28, 2004, 06:05:00
Which color channel did you add the OIII frame to?
Title: Ha & OIII M42
Post by: Whitters on Dec 28, 2004, 06:07:00
Chris could you post both B&W images I would like to see what you recorded with the OIII filter.
Cheers
Title: Ha & OIII M42
Post by: Rocket Pooch on Dec 28, 2004, 18:31:00
The images we're taken at different times so there not a matching pair and I really did not have a clue what to do on the colour.  But here they are.  I probably could have done with approx 40 sec exposures on the OIII not the 20sec I used.

OIII Taken 26/12 with quite a lot of cloud about 20x20sec

(http://www.jumpers4goalposts.org.uk/images/Astronomy/Messier/M42-OIII.jpg)


Ha Taken 18/12 excellent conditions

(http://www.jumpers4goalposts.org.uk/images/Astronomy/Messier/M42-HR-20041218.jpg)

[ This Message was edited by: csuddell on 2004-12-28 10:32 ]
Title: Ha & OIII M42
Post by: Rocket Pooch on Dec 28, 2004, 20:31:00
Had another play.

(http://www.jumpers4goalposts.org.uk/images/Astronomy/Messier/M42-OIII-Ha-20041226.jpg)
Title: Ha & OIII M42
Post by: Rocket Pooch on Dec 28, 2004, 20:33:00
Sorry paul forgot to say the OII was GB Ha R
Title: Ha & OIII M42
Post by: Whitters on Dec 29, 2004, 00:18:00
Pretty cool Chris,
As you suggest, to start with the exposure times for RGB should be the same to get a rough approximatirion of color balance.