Print Page - Albireo 26-6-11

Title: Albireo 26-6-11
Post by: Carole on Jun 28, 2011, 10:29:24

I used Albireo as my Focus check between images and thought "why not image it while I am here?"

Was not quite sure what sort of exposure to give it as I didn't want it blown out like some of the major stars in some of my other images, so did 200 ISO.

14 x 1min 200 ISO Modified Canon 450D + CLS filter
ED120, guided

(http://gallery.orpington-astronomy.org.uk/albums/userpics/10047/normal_Albireo_DSLR_14_x_1_min_200_ISO_CROP.jpg)

Title: Re: Albireo 26-6-11
Post by: MarkS on Jun 28, 2011, 12:36:41

Beautiful contrast in star colours!

You didn't need the CLS filter for something so bright but it suppose it does reduce the amount of background subtraction required.

Mark

Title: Re: Albireo 26-6-11
Post by: RobertM on Jun 28, 2011, 12:46:39

Yes, I'd agree. The colours look very subtle and natural.

Robert

Title: Re: Albireo 26-6-11
Post by: Rocket Pooch on Jun 28, 2011, 12:50:39

I think the colours are very wrong? But hey what do I know :-)

:alien:

Title: Re: Albireo 26-6-11
Post by: RobertM on Jun 28, 2011, 12:55:51

If you're right (which is likely) then my work screen is wrong, will have another look when I get home tonight...

Title: Re: Albireo 26-6-11
Post by: Rocket Pooch on Jun 28, 2011, 12:58:10

Hi,

With my MK1 Eyeball and a 12" dob its a dull blue and a light Orange, well light its actually quite vivid, its definatly not Pinky and light Blue, possible the filter. Also non-saturated would be good as well. One to discuss this weekend I guess. Wonder what the cloudyness is around the stars, optics perhaps?

Chris

Title: Re: Albireo 26-6-11
Post by: Carole on Jun 28, 2011, 13:12:20

Anything to do with the CLS filter or the Mod? I only increased the saturation slightly, didn't change any colour.
Interestingly my Dumbbell Nebula came out with green where most people have blue.

QuoteWonder what the cloudyness is around the stars

I always seem to get a fuzzy edge to bright stars, not got to the bottom of this yet.

Carole

Title: Re: Albireo 26-6-11
Post by: Carole on Jun 28, 2011, 13:18:53

QuoteYou didn't need the CLS filter for something so bright

Hi Mark, I was doing Witch's Broom and Crescent so had the filter in for those, it was just an idea while I was checking my focus in Albireo. But good to know for the future.

Carole

Title: Re: Albireo 26-6-11
Post by: RobertM on Jun 28, 2011, 17:23:29

How did you do your colour balance ? Now there's an interesting question for everyone !!!

Title: Re: Albireo 26-6-11
Post by: Carole on Jun 28, 2011, 18:31:55

Don't know what you mean about "doing my colour balance".

I bring the colour sliders together in DSS if that's what you mean. After that I just stretch the image. Sometimes I go into curves and select an individual colour and lift that slightly, but only if that colour is already in the image (i.e. if there is no green then I would not lift the green), and sometimes I increase the saturation, but that's all I ever do to colour.

Carole

Title: Re: Albireo 26-6-11
Post by: mickw on Jun 28, 2011, 19:41:01

Visually, they are a stunning blue and yellow/orange.
This isn't
They looked over exposed although the surrounding stars look quite nice

Title: Re: Albireo 26-6-11
Post by: MarkS on Jun 28, 2011, 20:05:19

Quote from: mickw
Visually, they are a stunning blue and yellow/orange.

But what about visually through a CLS filter?

Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Carole on Jun 28, 2011, 10:29:24